/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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 language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label19.c


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


This is Ultimate 0.2.0-0f64333
[2020-10-28 10:43:14,561 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-28 10:43:14,564 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-28 10:43:14,616 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-28 10:43:14,617 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-28 10:43:14,623 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-28 10:43:14,626 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-28 10:43:14,630 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-28 10:43:14,634 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-28 10:43:14,640 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-28 10:43:14,641 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-10-28 10:43:14,643 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-28 10:43:14,644 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-28 10:43:14,647 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-28 10:43:14,650 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-28 10:43:14,652 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-28 10:43:14,654 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-28 10:43:14,657 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-28 10:43:14,664 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-28 10:43:14,683 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-28 10:43:14,685 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-28 10:43:14,690 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-28 10:43:14,692 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-28 10:43:14,693 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-28 10:43:14,701 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-28 10:43:14,701 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-28 10:43:14,701 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-28 10:43:14,702 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-28 10:43:14,705 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-28 10:43:14,706 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-28 10:43:14,707 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-28 10:43:14,708 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-28 10:43:14,708 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-28 10:43:14,710 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-28 10:43:14,712 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-28 10:43:14,712 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-28 10:43:14,713 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-28 10:43:14,713 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-28 10:43:14,713 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-28 10:43:14,714 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-28 10:43:14,715 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-28 10:43:14,723 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
[2020-10-28 10:43:14,773 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-28 10:43:14,773 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-28 10:43:14,778 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-28 10:43:14,778 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-28 10:43:14,779 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-28 10:43:14,779 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-28 10:43:14,779 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-28 10:43:14,779 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-28 10:43:14,779 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-28 10:43:14,780 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-28 10:43:14,781 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-28 10:43:14,781 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-28 10:43:14,781 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-28 10:43:14,781 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-28 10:43:14,782 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-28 10:43:14,782 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-28 10:43:14,782 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-28 10:43:14,782 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-28 10:43:14,782 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-28 10:43:14,783 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-28 10:43:14,783 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-28 10:43:14,783 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-28 10:43:14,783 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-28 10:43:14,783 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-28 10:43:14,784 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-28 10:43:14,784 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-28 10:43:14,784 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-28 10:43:14,784 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-28 10:43:14,784 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-28 10:43:14,784 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true;
[2020-10-28 10:43:15,227 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-28 10:43:15,285 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-28 10:43:15,289 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-28 10:43:15,291 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-28 10:43:15,291 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-28 10:43:15,293 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label19.c
[2020-10-28 10:43:15,381 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/045f34a68/d9dd7d2a45fe479cb7067f0a5256ba78/FLAG8910ef65c
[2020-10-28 10:43:16,623 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-28 10:43:16,624 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label19.c
[2020-10-28 10:43:16,676 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/045f34a68/d9dd7d2a45fe479cb7067f0a5256ba78/FLAG8910ef65c
[2020-10-28 10:43:16,822 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/045f34a68/d9dd7d2a45fe479cb7067f0a5256ba78
[2020-10-28 10:43:16,825 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-28 10:43:16,834 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-28 10:43:16,838 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-28 10:43:16,838 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-28 10:43:16,842 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-28 10:43:16,844 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:43:16" (1/1) ...
[2020-10-28 10:43:16,848 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58b20d7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:43:16, skipping insertion in model container
[2020-10-28 10:43:16,849 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:43:16" (1/1) ...
[2020-10-28 10:43:16,858 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-28 10:43:17,082 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-28 10:43:19,443 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-28 10:43:19,461 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-28 10:43:20,664 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-28 10:43:20,742 INFO  L208         MainTranslator]: Completed translation
[2020-10-28 10:43:20,743 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:43:20 WrapperNode
[2020-10-28 10:43:20,743 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-28 10:43:20,744 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-28 10:43:20,745 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-28 10:43:20,745 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-28 10:43:20,760 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:43:20" (1/1) ...
[2020-10-28 10:43:20,761 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:43:20" (1/1) ...
[2020-10-28 10:43:20,874 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:43:20" (1/1) ...
[2020-10-28 10:43:20,875 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:43:20" (1/1) ...
[2020-10-28 10:43:21,180 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:43:20" (1/1) ...
[2020-10-28 10:43:21,231 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:43:20" (1/1) ...
[2020-10-28 10:43:21,285 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:43:20" (1/1) ...
[2020-10-28 10:43:21,358 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-28 10:43:21,360 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-28 10:43:21,360 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-28 10:43:21,360 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-28 10:43:21,361 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:43:20" (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
[2020-10-28 10:43:21,544 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-28 10:43:21,544 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-28 10:43:21,544 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2020-10-28 10:43:21,544 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-28 10:43:21,544 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-28 10:43:21,545 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-28 10:43:21,545 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-28 10:43:21,545 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-28 10:43:21,545 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-28 10:43:21,545 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-28 10:43:21,545 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-28 10:43:21,545 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-28 10:43:21,546 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-28 10:43:21,546 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-28 10:43:21,546 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-28 10:43:21,546 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-28 10:43:21,546 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-28 10:43:21,546 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-28 10:43:21,546 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-28 10:43:21,547 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-28 10:43:21,547 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-10-28 10:43:21,547 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-28 10:43:21,547 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2020-10-28 10:43:21,547 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-28 10:43:21,547 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-28 10:43:21,547 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-28 10:43:21,548 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-28 10:43:21,548 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-28 10:43:21,548 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-28 10:43:21,548 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-28 10:43:21,548 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-10-28 10:43:21,548 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-10-28 10:43:21,548 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-28 10:43:36,125 INFO  L293             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-28 10:43:36,125 INFO  L298             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-28 10:43:36,132 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:43:36 BoogieIcfgContainer
[2020-10-28 10:43:36,132 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-28 10:43:36,134 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-28 10:43:36,135 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-28 10:43:36,139 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-28 10:43:36,139 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:43:16" (1/3) ...
[2020-10-28 10:43:36,140 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e9664a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:43:36, skipping insertion in model container
[2020-10-28 10:43:36,140 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:43:20" (2/3) ...
[2020-10-28 10:43:36,141 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e9664a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:43:36, skipping insertion in model container
[2020-10-28 10:43:36,141 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:43:36" (3/3) ...
[2020-10-28 10:43:36,143 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem05_label19.c
[2020-10-28 10:43:36,156 INFO  L164   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-28 10:43:36,163 INFO  L176   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-28 10:43:36,178 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-28 10:43:36,218 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2020-10-28 10:43:36,219 INFO  L378      AbstractCegarLoop]: Hoare is true
[2020-10-28 10:43:36,219 INFO  L379      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-28 10:43:36,219 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-28 10:43:36,219 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-28 10:43:36,219 INFO  L382      AbstractCegarLoop]: Difference is false
[2020-10-28 10:43:36,219 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-28 10:43:36,219 INFO  L387      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-28 10:43:36,273 INFO  L276                IsEmpty]: Start isEmpty. Operand 2226 states.
[2020-10-28 10:43:36,434 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1711
[2020-10-28 10:43:36,435 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:43:36,438 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-28 10:43:36,438 INFO  L429      AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:43:36,445 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:43:36,447 INFO  L82        PathProgramCache]: Analyzing trace with hash 78847359, now seen corresponding path program 1 times
[2020-10-28 10:43:36,458 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:43:36,458 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861181599]
[2020-10-28 10:43:36,459 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:43:37,825 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:43:38,332 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:43:42,955 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:43:42,956 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1734
[2020-10-28 10:43:42,956 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:43:42,956 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5120
[2020-10-28 10:43:42,958 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:43:42,959 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:43:42,959 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-28 10:43:42,959 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-28 10:43:42,959 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1725
[2020-10-28 10:43:42,959 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-10-28 10:43:44,919 WARN  L193               SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 73
[2020-10-28 10:43:44,922 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:43:44,948 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:43:44,956 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:43:44,981 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:43:44,981 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:43:44,981 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:43:44,982 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 32
[2020-10-28 10:43:44,982 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:43:44,982 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:43:44,982 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:43:44,983 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:43:44,983 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-28 10:43:44,983 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:43:47,722 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-28 10:43:47,723 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861181599]
[2020-10-28 10:43:47,725 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-28 10:43:47,725 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-10-28 10:43:47,726 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520872569]
[2020-10-28 10:43:47,735 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-10-28 10:43:47,736 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:43:47,749 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-10-28 10:43:47,750 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-10-28 10:43:47,752 INFO  L87              Difference]: Start difference. First operand 2226 states. Second operand 4 states.
[2020-10-28 10:43:47,982 WARN  L193               SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 75
[2020-10-28 10:44:20,744 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-28 10:44:20,745 INFO  L93              Difference]: Finished difference Result 6365 states and 11965 transitions.
[2020-10-28 10:44:20,747 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-28 10:44:20,748 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1710
[2020-10-28 10:44:20,761 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-28 10:44:20,808 INFO  L225             Difference]: With dead ends: 6365
[2020-10-28 10:44:20,809 INFO  L226             Difference]: Without dead ends: 4075
[2020-10-28 10:44:20,823 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-10-28 10:44:20,852 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4075 states.
[2020-10-28 10:44:21,133 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4075 to 3987.
[2020-10-28 10:44:21,135 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3987 states.
[2020-10-28 10:44:21,168 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3987 states to 3987 states and 7373 transitions.
[2020-10-28 10:44:21,171 INFO  L78                 Accepts]: Start accepts. Automaton has 3987 states and 7373 transitions. Word has length 1710
[2020-10-28 10:44:21,179 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-28 10:44:21,181 INFO  L481      AbstractCegarLoop]: Abstraction has 3987 states and 7373 transitions.
[2020-10-28 10:44:21,181 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-10-28 10:44:21,181 INFO  L276                IsEmpty]: Start isEmpty. Operand 3987 states and 7373 transitions.
[2020-10-28 10:44:21,354 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1721
[2020-10-28 10:44:21,356 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:44:21,357 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, 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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]
[2020-10-28 10:44:21,358 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-28 10:44:21,358 INFO  L429      AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:44:21,360 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:44:21,361 INFO  L82        PathProgramCache]: Analyzing trace with hash 1682304895, now seen corresponding path program 1 times
[2020-10-28 10:44:21,361 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:44:21,362 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350438123]
[2020-10-28 10:44:21,363 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:44:21,529 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:44:21,576 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:44:23,983 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:44:26,564 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:44:26,565 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1746
[2020-10-28 10:44:26,565 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-28 10:44:26,565 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5028
[2020-10-28 10:44:26,566 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:44:26,566 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:44:26,566 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-28 10:44:26,566 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-28 10:44:26,567 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 16
[2020-10-28 10:44:26,567 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:44:27,810 WARN  L193               SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 73
[2020-10-28 10:44:27,812 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:44:27,820 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:44:27,823 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:44:27,839 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:44:27,840 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:44:27,840 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:44:27,840 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 18
[2020-10-28 10:44:27,840 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:44:27,841 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:44:27,841 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:44:27,841 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:44:27,841 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-28 10:44:27,842 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:44:27,891 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-28 10:44:27,894 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:44:27,898 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:44:27,918 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:44:27,918 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-10-28 10:44:27,918 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:44:27,919 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 22
[2020-10-28 10:44:27,919 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:44:27,919 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:44:27,919 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:44:27,919 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-28 10:44:27,920 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 11
[2020-10-28 10:44:27,920 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:44:29,547 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-28 10:44:29,548 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350438123]
[2020-10-28 10:44:29,548 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-28 10:44:29,549 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-28 10:44:29,549 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632270938]
[2020-10-28 10:44:29,553 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-28 10:44:29,554 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:44:29,554 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-28 10:44:29,555 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-28 10:44:29,555 INFO  L87              Difference]: Start difference. First operand 3987 states and 7373 transitions. Second operand 7 states.
[2020-10-28 10:44:29,739 WARN  L193               SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 75
[2020-10-28 10:44:30,233 WARN  L193               SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 75
[2020-10-28 10:45:06,275 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-28 10:45:06,275 INFO  L93              Difference]: Finished difference Result 11755 states and 21948 transitions.
[2020-10-28 10:45:06,276 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-10-28 10:45:06,277 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1720
[2020-10-28 10:45:06,277 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-28 10:45:06,324 INFO  L225             Difference]: With dead ends: 11755
[2020-10-28 10:45:06,324 INFO  L226             Difference]: Without dead ends: 7774
[2020-10-28 10:45:06,339 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132
[2020-10-28 10:45:06,350 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7774 states.
[2020-10-28 10:45:06,561 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7774 to 7631.
[2020-10-28 10:45:06,561 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 7631 states.
[2020-10-28 10:45:06,590 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7631 states to 7631 states and 12271 transitions.
[2020-10-28 10:45:06,591 INFO  L78                 Accepts]: Start accepts. Automaton has 7631 states and 12271 transitions. Word has length 1720
[2020-10-28 10:45:06,591 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-28 10:45:06,591 INFO  L481      AbstractCegarLoop]: Abstraction has 7631 states and 12271 transitions.
[2020-10-28 10:45:06,591 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-28 10:45:06,592 INFO  L276                IsEmpty]: Start isEmpty. Operand 7631 states and 12271 transitions.
[2020-10-28 10:45:06,635 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1722
[2020-10-28 10:45:06,636 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:45:06,637 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-28 10:45:06,637 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-28 10:45:06,638 INFO  L429      AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:45:06,638 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:45:06,639 INFO  L82        PathProgramCache]: Analyzing trace with hash 1372209271, now seen corresponding path program 1 times
[2020-10-28 10:45:06,639 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:45:06,640 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12845729]
[2020-10-28 10:45:06,640 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:45:06,955 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:45:07,161 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:45:07,788 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:45:11,978 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:45:11,978 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1747
[2020-10-28 10:45:11,978 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-28 10:45:11,978 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5019
[2020-10-28 10:45:11,979 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:45:11,979 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:45:11,979 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-28 10:45:11,979 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-28 10:45:11,979 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 17
[2020-10-28 10:45:11,980 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:45:12,595 WARN  L193               SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 73
[2020-10-28 10:45:12,596 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:45:12,604 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:45:12,608 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:45:12,621 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:45:12,622 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:45:12,622 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:45:12,622 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 16
[2020-10-28 10:45:12,622 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:45:12,622 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:45:12,623 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:45:12,623 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:45:12,623 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-28 10:45:12,623 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:45:12,665 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-28 10:45:12,670 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:45:12,674 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:45:12,713 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:45:12,714 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-10-28 10:45:12,714 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:45:12,714 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 42
[2020-10-28 10:45:12,714 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:45:12,715 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:45:12,715 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:45:12,715 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-28 10:45:12,715 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 12
[2020-10-28 10:45:12,715 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:45:14,234 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-28 10:45:14,235 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12845729]
[2020-10-28 10:45:14,235 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-28 10:45:14,235 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-28 10:45:14,236 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907797550]
[2020-10-28 10:45:14,238 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-28 10:45:14,238 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:45:14,239 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-28 10:45:14,239 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-28 10:45:14,239 INFO  L87              Difference]: Start difference. First operand 7631 states and 12271 transitions. Second operand 7 states.
[2020-10-28 10:45:14,434 WARN  L193               SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 77
[2020-10-28 10:45:15,080 WARN  L193               SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 79
[2020-10-28 10:45:58,096 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-28 10:45:58,097 INFO  L93              Difference]: Finished difference Result 23293 states and 38323 transitions.
[2020-10-28 10:45:58,098 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-10-28 10:45:58,098 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1721
[2020-10-28 10:45:58,098 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-28 10:45:58,187 INFO  L225             Difference]: With dead ends: 23293
[2020-10-28 10:45:58,188 INFO  L226             Difference]: Without dead ends: 15668
[2020-10-28 10:45:58,212 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156
[2020-10-28 10:45:58,231 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15668 states.
[2020-10-28 10:45:58,679 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15668 to 15086.
[2020-10-28 10:45:58,680 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 15086 states.
[2020-10-28 10:45:58,726 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15086 states to 15086 states and 21170 transitions.
[2020-10-28 10:45:58,727 INFO  L78                 Accepts]: Start accepts. Automaton has 15086 states and 21170 transitions. Word has length 1721
[2020-10-28 10:45:58,727 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-28 10:45:58,728 INFO  L481      AbstractCegarLoop]: Abstraction has 15086 states and 21170 transitions.
[2020-10-28 10:45:58,728 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-28 10:45:58,728 INFO  L276                IsEmpty]: Start isEmpty. Operand 15086 states and 21170 transitions.
[2020-10-28 10:45:58,803 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1733
[2020-10-28 10:45:58,804 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:45:58,805 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-28 10:45:58,806 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-28 10:45:58,806 INFO  L429      AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:45:58,806 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:45:58,807 INFO  L82        PathProgramCache]: Analyzing trace with hash 1653802560, now seen corresponding path program 1 times
[2020-10-28 10:45:58,807 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:45:58,807 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604807880]
[2020-10-28 10:45:58,808 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:45:59,152 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:45:59,444 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:46:00,079 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:46:00,589 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:46:04,305 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:46:04,306 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1758
[2020-10-28 10:46:04,306 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-28 10:46:04,306 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5150
[2020-10-28 10:46:04,306 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:46:04,307 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:46:04,307 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-28 10:46:04,307 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-28 10:46:04,307 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 28
[2020-10-28 10:46:04,308 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-28 10:46:04,734 WARN  L193               SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 73
[2020-10-28 10:46:04,735 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:46:04,740 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:46:04,743 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:46:04,752 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:46:04,752 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:46:04,752 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:46:04,752 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-10-28 10:46:04,753 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:46:04,753 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:46:04,753 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:46:04,753 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:46:04,753 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-28 10:46:04,754 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:46:04,797 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-28 10:46:04,803 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:46:04,807 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:46:04,852 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:46:04,852 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-10-28 10:46:04,853 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:46:04,853 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 49
[2020-10-28 10:46:04,853 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:46:04,853 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:46:04,854 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:46:04,854 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-28 10:46:04,854 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 23
[2020-10-28 10:46:04,854 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:46:06,315 INFO  L134       CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-28 10:46:06,316 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604807880]
[2020-10-28 10:46:06,316 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-28 10:46:06,316 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-28 10:46:06,317 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045454615]
[2020-10-28 10:46:06,319 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-28 10:46:06,319 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-28 10:46:06,320 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-28 10:46:06,320 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-28 10:46:06,321 INFO  L87              Difference]: Start difference. First operand 15086 states and 21170 transitions. Second operand 7 states.
[2020-10-28 10:46:06,495 WARN  L193               SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 77
[2020-10-28 10:46:07,736 WARN  L193               SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 78
[2020-10-28 10:46:51,934 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-28 10:46:51,935 INFO  L93              Difference]: Finished difference Result 39066 states and 58426 transitions.
[2020-10-28 10:46:51,936 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-10-28 10:46:51,936 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1732
[2020-10-28 10:46:51,936 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-28 10:46:52,041 INFO  L225             Difference]: With dead ends: 39066
[2020-10-28 10:46:52,041 INFO  L226             Difference]: Without dead ends: 23986
[2020-10-28 10:46:52,094 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156
[2020-10-28 10:46:52,127 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 23986 states.
[2020-10-28 10:46:52,763 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 23986 to 22935.
[2020-10-28 10:46:52,764 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22935 states.
[2020-10-28 10:46:52,821 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22935 states to 22935 states and 30404 transitions.
[2020-10-28 10:46:52,822 INFO  L78                 Accepts]: Start accepts. Automaton has 22935 states and 30404 transitions. Word has length 1732
[2020-10-28 10:46:52,822 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-28 10:46:52,822 INFO  L481      AbstractCegarLoop]: Abstraction has 22935 states and 30404 transitions.
[2020-10-28 10:46:52,822 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-28 10:46:52,823 INFO  L276                IsEmpty]: Start isEmpty. Operand 22935 states and 30404 transitions.
[2020-10-28 10:46:53,078 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1846
[2020-10-28 10:46:53,079 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-28 10:46:53,083 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2020-10-28 10:46:53,083 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-28 10:46:53,084 INFO  L429      AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-28 10:46:53,084 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-28 10:46:53,085 INFO  L82        PathProgramCache]: Analyzing trace with hash 1108700934, now seen corresponding path program 1 times
[2020-10-28 10:46:53,085 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-28 10:46:53,086 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238459138]
[2020-10-28 10:46:53,086 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-28 10:46:53,559 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:46:53,900 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:46:54,572 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:46:57,242 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:46:58,653 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:46:58,653 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1873
[2020-10-28 10:46:58,653 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-28 10:46:58,654 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5086
[2020-10-28 10:46:58,654 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:46:58,654 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:46:58,654 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-28 10:46:58,654 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 123
[2020-10-28 10:46:58,654 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 25
[2020-10-28 10:46:58,655 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:46:59,128 WARN  L193               SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 73
[2020-10-28 10:46:59,129 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-28 10:46:59,132 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:46:59,134 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:46:59,139 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:46:59,140 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-28 10:46:59,140 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:46:59,140 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-10-28 10:46:59,140 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:46:59,140 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:46:59,140 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-28 10:46:59,141 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:46:59,141 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-28 10:46:59,141 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:46:59,179 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-28 10:46:59,200 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:46:59,220 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-28 10:46:59,305 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-28 10:46:59,305 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 114
[2020-10-28 10:46:59,305 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-28 10:46:59,306 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 104
[2020-10-28 10:46:59,306 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-28 10:46:59,306 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.6
[2020-10-28 10:46:59,306 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-28 10:46:59,306 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-28 10:46:59,306 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 108
[2020-10-28 10:46:59,306 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-28 10:46:59,344 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121
[2020-10-28 10:46:59,351 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-28 10:46:59,355 FATAL L256   erpolLogProxyWrapper]: Now shrinking...