/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_label40.c


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


This is Ultimate 0.2.0-0f64333
[2020-10-29 05:29:04,150 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-29 05:29:04,154 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-29 05:29:04,214 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-29 05:29:04,215 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-29 05:29:04,222 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-29 05:29:04,224 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-29 05:29:04,229 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
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[2020-10-29 05:29:04,239 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2020-10-29 05:29:04,243 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-29 05:29:04,246 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-29 05:29:04,248 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-29 05:29:04,250 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-29 05:29:04,252 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-29 05:29:04,255 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-29 05:29:04,262 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-29 05:29:04,270 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-29 05:29:04,272 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-29 05:29:04,276 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-29 05:29:04,277 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-29 05:29:04,280 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-29 05:29:04,296 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-29 05:29:04,297 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-29 05:29:04,297 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-29 05:29:04,298 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-29 05:29:04,298 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-29 05:29:04,301 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-29 05:29:04,302 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-29 05:29:04,303 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-29 05:29:04,304 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-29 05:29:04,306 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-29 05:29:04,307 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-29 05:29:04,308 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-29 05:29:04,308 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-29 05:29:04,309 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-29 05:29:04,309 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-29 05:29:04,310 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-29 05:29:04,311 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-29 05:29:04,316 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
[2020-10-29 05:29:04,368 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-29 05:29:04,368 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-29 05:29:04,374 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-29 05:29:04,374 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-29 05:29:04,374 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-29 05:29:04,374 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-29 05:29:04,375 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-29 05:29:04,375 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-29 05:29:04,375 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-29 05:29:04,376 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-29 05:29:04,377 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-29 05:29:04,377 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-29 05:29:04,377 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-29 05:29:04,378 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-29 05:29:04,378 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-29 05:29:04,378 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-29 05:29:04,378 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-29 05:29:04,379 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-29 05:29:04,379 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-29 05:29:04,379 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-29 05:29:04,380 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-29 05:29:04,380 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-29 05:29:04,380 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-29 05:29:04,380 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-29 05:29:04,380 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-29 05:29:04,381 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-29 05:29:04,381 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-29 05:29:04,381 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-29 05:29:04,381 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-29 05:29:04,381 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true;
[2020-10-29 05:29:04,806 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-29 05:29:04,833 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-29 05:29:04,836 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-29 05:29:04,838 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-29 05:29:04,839 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-29 05:29:04,840 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label40.c
[2020-10-29 05:29:04,933 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79a8fe230/1a18fd3809dc4bc89df2aabae2991833/FLAG30e4b00da
[2020-10-29 05:29:06,269 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-29 05:29:06,269 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label40.c
[2020-10-29 05:29:06,312 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79a8fe230/1a18fd3809dc4bc89df2aabae2991833/FLAG30e4b00da
[2020-10-29 05:29:06,492 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79a8fe230/1a18fd3809dc4bc89df2aabae2991833
[2020-10-29 05:29:06,496 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-29 05:29:06,504 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-29 05:29:06,508 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-29 05:29:06,509 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-29 05:29:06,513 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-29 05:29:06,515 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:29:06" (1/1) ...
[2020-10-29 05:29:06,519 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@139b64ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:29:06, skipping insertion in model container
[2020-10-29 05:29:06,520 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:29:06" (1/1) ...
[2020-10-29 05:29:06,529 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-29 05:29:06,758 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-29 05:29:09,000 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-29 05:29:09,020 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-29 05:29:10,347 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-29 05:29:10,428 INFO  L208         MainTranslator]: Completed translation
[2020-10-29 05:29:10,430 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:29:10 WrapperNode
[2020-10-29 05:29:10,430 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-29 05:29:10,432 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-29 05:29:10,432 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-29 05:29:10,432 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-29 05:29:10,447 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:29:10" (1/1) ...
[2020-10-29 05:29:10,449 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:29:10" (1/1) ...
[2020-10-29 05:29:10,593 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:29:10" (1/1) ...
[2020-10-29 05:29:10,593 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:29:10" (1/1) ...
[2020-10-29 05:29:10,940 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:29:10" (1/1) ...
[2020-10-29 05:29:11,019 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:29:10" (1/1) ...
[2020-10-29 05:29:11,069 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:29:10" (1/1) ...
[2020-10-29 05:29:11,138 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-29 05:29:11,141 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-29 05:29:11,141 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-29 05:29:11,141 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-29 05:29:11,142 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:29:10" (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
[2020-10-29 05:29:11,306 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-29 05:29:11,307 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-29 05:29:11,308 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2020-10-29 05:29:11,308 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-29 05:29:11,309 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-29 05:29:11,309 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-29 05:29:11,309 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-29 05:29:11,309 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-29 05:29:11,309 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-29 05:29:11,310 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-29 05:29:11,311 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-29 05:29:11,311 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-29 05:29:11,311 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-29 05:29:11,311 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-29 05:29:11,311 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-29 05:29:11,312 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-29 05:29:11,313 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-29 05:29:11,313 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-29 05:29:11,313 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-29 05:29:11,313 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-29 05:29:11,314 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-10-29 05:29:11,314 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-29 05:29:11,314 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2020-10-29 05:29:11,314 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-29 05:29:11,314 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-29 05:29:11,314 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-29 05:29:11,314 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-29 05:29:11,315 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-29 05:29:11,315 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-29 05:29:11,315 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-29 05:29:11,315 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-10-29 05:29:11,315 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-10-29 05:29:11,315 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-29 05:29:21,608 INFO  L293             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-29 05:29:21,609 INFO  L298             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-29 05:29:21,615 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:29:21 BoogieIcfgContainer
[2020-10-29 05:29:21,615 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-29 05:29:21,619 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-29 05:29:21,620 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-29 05:29:21,624 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-29 05:29:21,624 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:29:06" (1/3) ...
[2020-10-29 05:29:21,625 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f87f85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:29:21, skipping insertion in model container
[2020-10-29 05:29:21,625 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:29:10" (2/3) ...
[2020-10-29 05:29:21,626 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43f87f85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:29:21, skipping insertion in model container
[2020-10-29 05:29:21,626 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:29:21" (3/3) ...
[2020-10-29 05:29:21,628 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem05_label40.c
[2020-10-29 05:29:21,642 INFO  L164   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-29 05:29:21,649 INFO  L176   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-29 05:29:21,664 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-29 05:29:21,718 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2020-10-29 05:29:21,718 INFO  L378      AbstractCegarLoop]: Hoare is true
[2020-10-29 05:29:21,718 INFO  L379      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-29 05:29:21,718 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-29 05:29:21,718 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-29 05:29:21,719 INFO  L382      AbstractCegarLoop]: Difference is false
[2020-10-29 05:29:21,719 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-29 05:29:21,719 INFO  L387      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-29 05:29:21,909 INFO  L276                IsEmpty]: Start isEmpty. Operand 2226 states.
[2020-10-29 05:29:22,064 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1673
[2020-10-29 05:29:22,065 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-29 05:29:22,067 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]
[2020-10-29 05:29:22,068 INFO  L429      AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 05:29:22,082 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 05:29:22,084 INFO  L82        PathProgramCache]: Analyzing trace with hash 1875713063, now seen corresponding path program 1 times
[2020-10-29 05:29:22,093 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 05:29:22,094 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669903843]
[2020-10-29 05:29:22,095 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 05:29:23,215 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:29:23,728 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:29:28,642 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:29:28,643 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1696
[2020-10-29 05:29:28,643 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:29:28,644 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5417
[2020-10-29 05:29:28,647 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:29:28,648 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:29:28,648 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-29 05:29:28,648 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-29 05:29:28,649 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1687
[2020-10-29 05:29:28,649 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-10-29 05:29:30,784 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-29 05:29:30,797 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:29:30,803 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:29:30,836 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:29:30,837 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-29 05:29:30,837 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:29:30,837 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 38
[2020-10-29 05:29:30,837 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:29:30,838 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:29:30,838 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-29 05:29:30,838 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 05:29:30,838 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-29 05:29:30,839 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-29 05:29:34,565 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-29 05:29:34,566 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669903843]
[2020-10-29 05:29:34,568 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-29 05:29:34,568 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-10-29 05:29:34,569 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175853238]
[2020-10-29 05:29:34,579 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-10-29 05:29:34,579 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-29 05:29:34,598 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-10-29 05:29:34,599 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-10-29 05:29:34,601 INFO  L87              Difference]: Start difference. First operand 2226 states. Second operand 4 states.
[2020-10-29 05:29:58,215 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-29 05:29:58,215 INFO  L93              Difference]: Finished difference Result 6316 states and 11857 transitions.
[2020-10-29 05:29:58,216 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-29 05:29:58,218 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1672
[2020-10-29 05:29:58,230 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-29 05:29:58,287 INFO  L225             Difference]: With dead ends: 6316
[2020-10-29 05:29:58,287 INFO  L226             Difference]: Without dead ends: 4026
[2020-10-29 05:29:58,306 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-10-29 05:29:58,335 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4026 states.
[2020-10-29 05:29:58,536 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 3997.
[2020-10-29 05:29:58,537 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3997 states.
[2020-10-29 05:29:58,563 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3997 states to 3997 states and 6428 transitions.
[2020-10-29 05:29:58,565 INFO  L78                 Accepts]: Start accepts. Automaton has 3997 states and 6428 transitions. Word has length 1672
[2020-10-29 05:29:58,571 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-29 05:29:58,572 INFO  L481      AbstractCegarLoop]: Abstraction has 3997 states and 6428 transitions.
[2020-10-29 05:29:58,572 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-10-29 05:29:58,572 INFO  L276                IsEmpty]: Start isEmpty. Operand 3997 states and 6428 transitions.
[2020-10-29 05:29:58,749 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1682
[2020-10-29 05:29:58,749 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-29 05:29:58,751 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-29 05:29:58,752 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-29 05:29:58,753 INFO  L429      AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 05:29:58,754 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 05:29:58,755 INFO  L82        PathProgramCache]: Analyzing trace with hash 211555875, now seen corresponding path program 1 times
[2020-10-29 05:29:58,755 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 05:29:58,756 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656920274]
[2020-10-29 05:29:58,756 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 05:29:58,925 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:29:58,959 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:30:01,196 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:30:03,942 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:30:03,943 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1707
[2020-10-29 05:30:03,943 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-29 05:30:03,943 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5013
[2020-10-29 05:30:03,944 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:30:03,944 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:30:03,945 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 18
[2020-10-29 05:30:03,945 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 19
[2020-10-29 05:30:03,945 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1684
[2020-10-29 05:30:03,945 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-29 05:30:05,667 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-29 05:30:05,672 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:30:05,675 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:30:05,693 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:30:05,694 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-29 05:30:05,694 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:30:05,697 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 20
[2020-10-29 05:30:05,698 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:30:05,698 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:30:05,698 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-29 05:30:05,698 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 05:30:05,698 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-29 05:30:05,698 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:30:05,724 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-29 05:30:05,733 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:30:05,735 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:30:05,748 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:30:05,748 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-29 05:30:05,748 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:30:05,749 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 14
[2020-10-29 05:30:05,749 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:30:05,749 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:30:05,749 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-29 05:30:05,749 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 05:30:05,749 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 4
[2020-10-29 05:30:05,750 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:30:08,459 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-29 05:30:08,459 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656920274]
[2020-10-29 05:30:08,460 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-29 05:30:08,465 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5
[2020-10-29 05:30:08,466 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638741193]
[2020-10-29 05:30:08,469 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-29 05:30:08,470 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-29 05:30:08,471 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-29 05:30:08,471 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-29 05:30:08,471 INFO  L87              Difference]: Start difference. First operand 3997 states and 6428 transitions. Second operand 5 states.
[2020-10-29 05:30:35,141 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-29 05:30:35,141 INFO  L93              Difference]: Finished difference Result 11640 states and 18924 transitions.
[2020-10-29 05:30:35,143 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-29 05:30:35,143 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 1681
[2020-10-29 05:30:35,146 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-29 05:30:35,189 INFO  L225             Difference]: With dead ends: 11640
[2020-10-29 05:30:35,189 INFO  L226             Difference]: Without dead ends: 7649
[2020-10-29 05:30:35,201 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2020-10-29 05:30:35,213 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7649 states.
[2020-10-29 05:30:35,386 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7649 to 7571.
[2020-10-29 05:30:35,386 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 7571 states.
[2020-10-29 05:30:35,412 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7571 states to 7571 states and 10962 transitions.
[2020-10-29 05:30:35,413 INFO  L78                 Accepts]: Start accepts. Automaton has 7571 states and 10962 transitions. Word has length 1681
[2020-10-29 05:30:35,416 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-29 05:30:35,416 INFO  L481      AbstractCegarLoop]: Abstraction has 7571 states and 10962 transitions.
[2020-10-29 05:30:35,416 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-29 05:30:35,416 INFO  L276                IsEmpty]: Start isEmpty. Operand 7571 states and 10962 transitions.
[2020-10-29 05:30:35,475 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1684
[2020-10-29 05:30:35,476 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-29 05:30:35,477 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]
[2020-10-29 05:30:35,477 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-29 05:30:35,478 INFO  L429      AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 05:30:35,478 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 05:30:35,479 INFO  L82        PathProgramCache]: Analyzing trace with hash 709474591, now seen corresponding path program 1 times
[2020-10-29 05:30:35,479 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 05:30:35,480 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034932892]
[2020-10-29 05:30:35,480 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 05:30:35,808 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:30:36,009 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:30:36,526 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:30:40,937 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:30:40,938 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1709
[2020-10-29 05:30:40,938 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-29 05:30:40,938 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5126
[2020-10-29 05:30:40,938 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:30:40,939 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:30:40,939 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 18
[2020-10-29 05:30:40,939 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 21
[2020-10-29 05:30:40,939 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1684
[2020-10-29 05:30:40,939 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:30:41,832 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-29 05:30:41,836 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:30:41,837 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:30:41,843 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:30:41,843 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-29 05:30:41,843 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:30:41,844 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-10-29 05:30:41,844 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:30:41,844 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:30:41,844 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-29 05:30:41,844 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 05:30:41,845 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-29 05:30:41,845 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-29 05:30:41,867 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-29 05:30:41,872 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:30:41,875 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:30:41,888 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:30:41,889 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-10-29 05:30:41,889 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:30:41,889 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 15
[2020-10-29 05:30:41,889 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:30:41,889 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:30:41,889 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-29 05:30:41,890 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 05:30:41,890 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-10-29 05:30:41,890 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:30:44,231 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-29 05:30:44,231 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034932892]
[2020-10-29 05:30:44,232 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-29 05:30:44,232 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6
[2020-10-29 05:30:44,232 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631180207]
[2020-10-29 05:30:44,235 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-10-29 05:30:44,235 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-29 05:30:44,236 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-10-29 05:30:44,236 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-10-29 05:30:44,236 INFO  L87              Difference]: Start difference. First operand 7571 states and 10962 transitions. Second operand 6 states.
[2020-10-29 05:31:12,226 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-29 05:31:12,226 INFO  L93              Difference]: Finished difference Result 18760 states and 28067 transitions.
[2020-10-29 05:31:12,227 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-29 05:31:12,227 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 1683
[2020-10-29 05:31:12,233 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-29 05:31:12,294 INFO  L225             Difference]: With dead ends: 18760
[2020-10-29 05:31:12,295 INFO  L226             Difference]: Without dead ends: 11195
[2020-10-29 05:31:12,316 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2020-10-29 05:31:12,331 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11195 states.
[2020-10-29 05:31:12,598 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11195 to 11126.
[2020-10-29 05:31:12,598 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 11126 states.
[2020-10-29 05:31:12,631 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11126 states to 11126 states and 15543 transitions.
[2020-10-29 05:31:12,631 INFO  L78                 Accepts]: Start accepts. Automaton has 11126 states and 15543 transitions. Word has length 1683
[2020-10-29 05:31:12,634 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-29 05:31:12,635 INFO  L481      AbstractCegarLoop]: Abstraction has 11126 states and 15543 transitions.
[2020-10-29 05:31:12,635 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-10-29 05:31:12,635 INFO  L276                IsEmpty]: Start isEmpty. Operand 11126 states and 15543 transitions.
[2020-10-29 05:31:12,698 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1703
[2020-10-29 05:31:12,698 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-29 05:31:12,700 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-29 05:31:12,700 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-29 05:31:12,700 INFO  L429      AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 05:31:12,701 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 05:31:12,702 INFO  L82        PathProgramCache]: Analyzing trace with hash 865529032, now seen corresponding path program 1 times
[2020-10-29 05:31:12,702 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 05:31:12,702 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472883220]
[2020-10-29 05:31:12,703 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 05:31:12,829 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:31:12,855 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:31:12,907 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:31:14,162 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:31:17,922 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:31:17,922 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1730
[2020-10-29 05:31:17,922 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-29 05:31:17,922 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5089
[2020-10-29 05:31:17,922 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:31:17,923 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:31:17,923 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 8
[2020-10-29 05:31:17,923 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-29 05:31:17,923 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 38
[2020-10-29 05:31:17,923 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:31:18,315 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-29 05:31:18,321 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:31:18,325 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:31:18,339 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:31:18,340 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-29 05:31:18,340 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:31:18,340 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 17
[2020-10-29 05:31:18,340 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:31:18,340 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:31:18,340 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-29 05:31:18,341 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 05:31:18,341 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-29 05:31:18,341 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:31:18,367 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-29 05:31:18,370 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:31:18,372 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:31:18,385 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:31:18,389 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:31:18,389 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-10-29 05:31:18,390 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-29 05:31:18,390 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 18
[2020-10-29 05:31:18,390 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:31:18,391 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:31:18,391 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-29 05:31:18,391 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-29 05:31:18,391 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 10
[2020-10-29 05:31:18,391 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-29 05:31:18,407 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2020-10-29 05:31:18,418 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:31:18,423 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:31:18,456 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:31:18,457 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 22
[2020-10-29 05:31:18,457 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:31:18,457 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 37
[2020-10-29 05:31:18,457 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:31:18,457 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:31:18,457 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-29 05:31:18,458 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-29 05:31:18,458 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 22
[2020-10-29 05:31:18,458 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:31:19,885 INFO  L134       CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2020-10-29 05:31:19,886 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472883220]
[2020-10-29 05:31:19,886 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-29 05:31:19,887 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6
[2020-10-29 05:31:19,887 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346538742]
[2020-10-29 05:31:19,889 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-29 05:31:19,890 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-29 05:31:19,890 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-29 05:31:19,890 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-29 05:31:19,891 INFO  L87              Difference]: Start difference. First operand 11126 states and 15543 transitions. Second operand 7 states.
[2020-10-29 05:31:52,183 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-29 05:31:52,183 INFO  L93              Difference]: Finished difference Result 33010 states and 47145 transitions.
[2020-10-29 05:31:52,184 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-10-29 05:31:52,185 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1702
[2020-10-29 05:31:52,185 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-29 05:31:52,273 INFO  L225             Difference]: With dead ends: 33010
[2020-10-29 05:31:52,273 INFO  L226             Difference]: Without dead ends: 21890
[2020-10-29 05:31:52,309 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-29 05:31:52,340 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21890 states.
[2020-10-29 05:31:52,847 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21890 to 21848.
[2020-10-29 05:31:52,847 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 21848 states.
[2020-10-29 05:31:52,896 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 21848 states to 21848 states and 29956 transitions.
[2020-10-29 05:31:52,896 INFO  L78                 Accepts]: Start accepts. Automaton has 21848 states and 29956 transitions. Word has length 1702
[2020-10-29 05:31:52,897 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-29 05:31:52,897 INFO  L481      AbstractCegarLoop]: Abstraction has 21848 states and 29956 transitions.
[2020-10-29 05:31:52,897 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-29 05:31:52,897 INFO  L276                IsEmpty]: Start isEmpty. Operand 21848 states and 29956 transitions.
[2020-10-29 05:31:52,978 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1710
[2020-10-29 05:31:52,978 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-29 05:31:52,980 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-29 05:31:52,980 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-29 05:31:52,980 INFO  L429      AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 05:31:52,981 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 05:31:52,982 INFO  L82        PathProgramCache]: Analyzing trace with hash -1552909798, now seen corresponding path program 1 times
[2020-10-29 05:31:52,982 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 05:31:52,983 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178167552]
[2020-10-29 05:31:52,983 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 05:31:53,111 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:31:53,141 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:31:53,464 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:31:58,215 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:31:58,215 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1737
[2020-10-29 05:31:58,215 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-29 05:31:58,215 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5100
[2020-10-29 05:31:58,216 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:31:58,216 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:31:58,216 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 33
[2020-10-29 05:31:58,216 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 47
[2020-10-29 05:31:58,216 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1279
[2020-10-29 05:31:58,216 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:32:01,588 WARN  L193               SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38
[2020-10-29 05:32:01,781 WARN  L193               SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 41
[2020-10-29 05:32:01,977 WARN  L193               SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 41
[2020-10-29 05:32:02,179 WARN  L193               SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 39
[2020-10-29 05:32:02,317 WARN  L193               SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 35
[2020-10-29 05:32:02,450 WARN  L193               SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34
[2020-10-29 05:32:02,590 WARN  L193               SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34
[2020-10-29 05:32:02,728 WARN  L193               SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34
[2020-10-29 05:32:02,876 WARN  L193               SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34
[2020-10-29 05:32:03,018 WARN  L193               SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34
[2020-10-29 05:32:03,175 WARN  L193               SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34
[2020-10-29 05:32:04,050 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-29 05:32:04,053 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:32:04,055 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:32:04,059 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:32:04,059 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-29 05:32:04,059 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:32:04,060 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-10-29 05:32:04,060 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:32:04,060 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:32:04,060 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-29 05:32:04,060 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 05:32:04,060 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-29 05:32:04,060 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:32:04,118 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-29 05:32:04,119 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:32:04,120 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:32:04,125 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:32:04,125 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-10-29 05:32:04,125 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:32:04,125 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-10-29 05:32:04,126 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:32:04,126 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:32:04,126 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-29 05:32:04,126 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 05:32:04,126 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-29 05:32:04,126 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:32:04,129 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19
[2020-10-29 05:32:04,135 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:32:04,140 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:32:04,168 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:32:04,168 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 27
[2020-10-29 05:32:04,168 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:32:04,169 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 32
[2020-10-29 05:32:04,169 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:32:04,169 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:32:04,169 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-10-29 05:32:04,169 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 05:32:04,169 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 20
[2020-10-29 05:32:04,169 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:32:24,500 INFO  L134       CoverageAnalysis]: Checked inductivity of 40 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2020-10-29 05:32:24,501 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178167552]
[2020-10-29 05:32:24,501 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-29 05:32:24,501 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24
[2020-10-29 05:32:24,501 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930679785]
[2020-10-29 05:32:24,503 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 24 states
[2020-10-29 05:32:24,503 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-29 05:32:24,503 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2020-10-29 05:32:24,503 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552
[2020-10-29 05:32:24,504 INFO  L87              Difference]: Start difference. First operand 21848 states and 29956 transitions. Second operand 24 states.
[2020-10-29 05:32:25,673 WARN  L193               SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 81
[2020-10-29 05:32:26,296 WARN  L193               SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 103
[2020-10-29 05:32:26,575 WARN  L193               SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 113
[2020-10-29 05:32:36,285 WARN  L193               SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 112
[2020-10-29 05:32:38,401 WARN  L193               SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 110
[2020-10-29 05:32:42,559 WARN  L193               SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99
[2020-10-29 05:32:43,105 WARN  L193               SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 107