/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=DEEPEST --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_label56.c


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


This is Ultimate 0.2.0-0f64333
[2020-10-27 16:21:38,891 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-27 16:21:38,894 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-27 16:21:38,941 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-27 16:21:38,942 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-27 16:21:38,949 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-27 16:21:38,951 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-27 16:21:38,956 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-27 16:21:38,960 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-27 16:21:38,966 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-27 16:21:38,967 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
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[2020-10-27 16:21:38,970 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-27 16:21:38,973 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-27 16:21:38,977 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-27 16:21:38,980 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-27 16:21:38,981 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-27 16:21:38,985 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-27 16:21:38,992 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-27 16:21:39,003 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-27 16:21:39,005 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-27 16:21:39,007 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-27 16:21:39,009 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-27 16:21:39,012 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-27 16:21:39,028 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-27 16:21:39,028 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-27 16:21:39,029 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-27 16:21:39,030 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-27 16:21:39,030 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-27 16:21:39,031 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-27 16:21:39,032 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-27 16:21:39,033 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-27 16:21:39,034 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-27 16:21:39,035 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-27 16:21:39,036 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-27 16:21:39,036 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-27 16:21:39,037 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-27 16:21:39,037 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-27 16:21:39,037 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-27 16:21:39,039 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-27 16:21:39,039 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-27 16:21:39,040 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
[2020-10-27 16:21:39,069 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-27 16:21:39,069 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-27 16:21:39,071 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-27 16:21:39,071 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-27 16:21:39,071 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-27 16:21:39,072 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-27 16:21:39,072 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-27 16:21:39,072 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-27 16:21:39,072 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-27 16:21:39,072 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-27 16:21:39,073 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-27 16:21:39,073 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-27 16:21:39,073 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-27 16:21:39,073 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-27 16:21:39,074 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-27 16:21:39,074 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-27 16:21:39,074 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-27 16:21:39,074 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-27 16:21:39,074 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-27 16:21:39,075 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-27 16:21:39,075 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-27 16:21:39,075 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-27 16:21:39,075 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-27 16:21:39,076 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-27 16:21:39,076 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-27 16:21:39,076 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-27 16:21:39,076 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-27 16:21:39,077 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-27 16:21:39,077 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-27 16:21:39,077 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true;
[2020-10-27 16:21:39,451 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-27 16:21:39,484 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-27 16:21:39,490 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-27 16:21:39,491 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-27 16:21:39,492 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-27 16:21:39,493 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label56.c
[2020-10-27 16:21:39,575 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bbbf9c7f6/7bccfadf25774932bba6de94ad150d19/FLAGf7ae38f40
[2020-10-27 16:21:41,048 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-27 16:21:41,049 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label56.c
[2020-10-27 16:21:41,106 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bbbf9c7f6/7bccfadf25774932bba6de94ad150d19/FLAGf7ae38f40
[2020-10-27 16:21:41,609 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bbbf9c7f6/7bccfadf25774932bba6de94ad150d19
[2020-10-27 16:21:41,613 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-27 16:21:41,620 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-27 16:21:41,625 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-27 16:21:41,625 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-27 16:21:41,629 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-27 16:21:41,630 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:21:41" (1/1) ...
[2020-10-27 16:21:41,636 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55176a4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:21:41, skipping insertion in model container
[2020-10-27 16:21:41,636 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:21:41" (1/1) ...
[2020-10-27 16:21:41,645 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-27 16:21:41,899 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-27 16:21:44,238 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-27 16:21:44,259 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-27 16:21:45,519 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-27 16:21:45,598 INFO  L208         MainTranslator]: Completed translation
[2020-10-27 16:21:45,599 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:21:45 WrapperNode
[2020-10-27 16:21:45,599 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-27 16:21:45,600 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-27 16:21:45,601 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-27 16:21:45,601 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-27 16:21:45,615 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:21:45" (1/1) ...
[2020-10-27 16:21:45,619 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:21:45" (1/1) ...
[2020-10-27 16:21:45,738 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:21:45" (1/1) ...
[2020-10-27 16:21:45,738 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:21:45" (1/1) ...
[2020-10-27 16:21:46,038 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:21:45" (1/1) ...
[2020-10-27 16:21:46,099 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:21:45" (1/1) ...
[2020-10-27 16:21:46,150 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:21:45" (1/1) ...
[2020-10-27 16:21:46,306 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-27 16:21:46,308 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-27 16:21:46,309 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-27 16:21:46,309 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-27 16:21:46,310 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:21:45" (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
[2020-10-27 16:21:46,392 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-27 16:21:46,392 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-27 16:21:46,392 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2020-10-27 16:21:46,392 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-27 16:21:46,392 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-27 16:21:46,393 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-27 16:21:46,393 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-27 16:21:46,393 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-27 16:21:46,393 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-27 16:21:46,393 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-27 16:21:46,393 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-27 16:21:46,393 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-27 16:21:46,394 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-27 16:21:46,394 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-27 16:21:46,394 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-27 16:21:46,394 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-27 16:21:46,394 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-27 16:21:46,394 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-27 16:21:46,395 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-27 16:21:46,395 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-27 16:21:46,395 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-10-27 16:21:46,395 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-27 16:21:46,395 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2020-10-27 16:21:46,395 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-27 16:21:46,395 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-27 16:21:46,396 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-27 16:21:46,396 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-27 16:21:46,396 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-27 16:21:46,396 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-27 16:21:46,396 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-27 16:21:46,396 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-10-27 16:21:46,396 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-10-27 16:21:46,397 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-27 16:21:56,382 INFO  L293             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-27 16:21:56,382 INFO  L298             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-27 16:21:56,387 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:21:56 BoogieIcfgContainer
[2020-10-27 16:21:56,387 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-27 16:21:56,389 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-27 16:21:56,389 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-27 16:21:56,393 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-27 16:21:56,394 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:21:41" (1/3) ...
[2020-10-27 16:21:56,395 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e89eb9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:21:56, skipping insertion in model container
[2020-10-27 16:21:56,395 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:21:45" (2/3) ...
[2020-10-27 16:21:56,395 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e89eb9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:21:56, skipping insertion in model container
[2020-10-27 16:21:56,396 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:21:56" (3/3) ...
[2020-10-27 16:21:56,397 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem05_label56.c
[2020-10-27 16:21:56,409 INFO  L164   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-27 16:21:56,416 INFO  L176   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-27 16:21:56,430 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-27 16:21:56,469 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2020-10-27 16:21:56,469 INFO  L378      AbstractCegarLoop]: Hoare is true
[2020-10-27 16:21:56,469 INFO  L379      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-27 16:21:56,469 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-27 16:21:56,470 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-27 16:21:56,470 INFO  L382      AbstractCegarLoop]: Difference is false
[2020-10-27 16:21:56,470 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-27 16:21:56,470 INFO  L387      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-27 16:21:56,527 INFO  L276                IsEmpty]: Start isEmpty. Operand 2226 states.
[2020-10-27 16:21:56,774 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1695
[2020-10-27 16:21:56,775 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 16:21:56,790 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]
[2020-10-27 16:21:56,791 INFO  L429      AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 16:21:56,804 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 16:21:56,805 INFO  L82        PathProgramCache]: Analyzing trace with hash -1207321793, now seen corresponding path program 1 times
[2020-10-27 16:21:56,815 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 16:21:56,815 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541259566]
[2020-10-27 16:21:56,816 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 16:21:57,941 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:21:58,452 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:22:02,994 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:22:02,994 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1718
[2020-10-27 16:22:02,994 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 16:22:02,995 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5042
[2020-10-27 16:22:02,997 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:22:02,998 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-27 16:22:02,998 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-27 16:22:02,999 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1709
[2020-10-27 16:22:02,999 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-10-27 16:22:04,719 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 16:22:04,731 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:22:04,736 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:22:04,758 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:22:04,759 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 16:22:04,759 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 16:22:04,759 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 26
[2020-10-27 16:22:04,759 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:22:04,760 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-27 16:22:04,760 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 16:22:04,760 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-27 16:22:04,760 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:22:07,691 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-27 16:22:07,692 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1541259566]
[2020-10-27 16:22:07,694 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-27 16:22:07,695 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-10-27 16:22:07,695 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753440449]
[2020-10-27 16:22:07,704 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-10-27 16:22:07,704 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 16:22:07,718 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-10-27 16:22:07,719 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-10-27 16:22:07,721 INFO  L87              Difference]: Start difference. First operand 2226 states. Second operand 4 states.
[2020-10-27 16:22:30,572 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 16:22:30,572 INFO  L93              Difference]: Finished difference Result 6365 states and 11967 transitions.
[2020-10-27 16:22:30,573 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-27 16:22:30,575 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1694
[2020-10-27 16:22:30,585 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 16:22:30,636 INFO  L225             Difference]: With dead ends: 6365
[2020-10-27 16:22:30,636 INFO  L226             Difference]: Without dead ends: 4075
[2020-10-27 16:22:30,649 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-10-27 16:22:30,678 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4075 states.
[2020-10-27 16:22:30,873 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4075 to 4005.
[2020-10-27 16:22:30,874 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4005 states.
[2020-10-27 16:22:30,901 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4005 states to 4005 states and 6505 transitions.
[2020-10-27 16:22:30,903 INFO  L78                 Accepts]: Start accepts. Automaton has 4005 states and 6505 transitions. Word has length 1694
[2020-10-27 16:22:30,909 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 16:22:30,909 INFO  L481      AbstractCegarLoop]: Abstraction has 4005 states and 6505 transitions.
[2020-10-27 16:22:30,910 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-10-27 16:22:30,910 INFO  L276                IsEmpty]: Start isEmpty. Operand 4005 states and 6505 transitions.
[2020-10-27 16:22:31,033 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1706
[2020-10-27 16:22:31,033 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 16:22:31,035 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]
[2020-10-27 16:22:31,035 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-27 16:22:31,035 INFO  L429      AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 16:22:31,036 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 16:22:31,037 INFO  L82        PathProgramCache]: Analyzing trace with hash 1190514231, now seen corresponding path program 1 times
[2020-10-27 16:22:31,039 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 16:22:31,040 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064132358]
[2020-10-27 16:22:31,040 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 16:22:31,489 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:22:31,805 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:22:32,480 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:22:36,733 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:22:36,734 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1731
[2020-10-27 16:22:36,737 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 16:22:36,738 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5240
[2020-10-27 16:22:36,739 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:22:36,739 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 18
[2020-10-27 16:22:36,739 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 21
[2020-10-27 16:22:36,739 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1706
[2020-10-27 16:22:36,739 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-27 16:22:38,462 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 16:22:38,465 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:22:38,467 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:22:38,472 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:22:38,473 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 16:22:38,473 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 16:22:38,473 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-10-27 16:22:38,473 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:22:38,474 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 16:22:38,474 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 16:22:38,474 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 16:22:38,474 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:22:38,497 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-27 16:22:38,501 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:22:38,503 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:22:38,518 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:22:38,519 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-10-27 16:22:38,519 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 16:22:38,519 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 16
[2020-10-27 16:22:38,519 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:22:38,519 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-27 16:22:38,520 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 16:22:38,520 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-10-27 16:22:38,521 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-27 16:22:41,410 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-27 16:22:41,410 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064132358]
[2020-10-27 16:22:41,411 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 16:22:41,411 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6
[2020-10-27 16:22:41,411 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208966496]
[2020-10-27 16:22:41,415 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-10-27 16:22:41,416 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 16:22:41,416 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-10-27 16:22:41,417 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-10-27 16:22:41,417 INFO  L87              Difference]: Start difference. First operand 4005 states and 6505 transitions. Second operand 6 states.
[2020-10-27 16:23:20,620 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 16:23:20,620 INFO  L93              Difference]: Finished difference Result 15171 states and 25096 transitions.
[2020-10-27 16:23:20,621 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-10-27 16:23:20,621 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 1705
[2020-10-27 16:23:20,625 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 16:23:20,691 INFO  L225             Difference]: With dead ends: 15171
[2020-10-27 16:23:20,692 INFO  L226             Difference]: Without dead ends: 11172
[2020-10-27 16:23:20,705 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56
[2020-10-27 16:23:20,721 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11172 states.
[2020-10-27 16:23:20,991 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11172 to 11138.
[2020-10-27 16:23:20,991 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 11138 states.
[2020-10-27 16:23:21,028 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11138 states to 11138 states and 16145 transitions.
[2020-10-27 16:23:21,028 INFO  L78                 Accepts]: Start accepts. Automaton has 11138 states and 16145 transitions. Word has length 1705
[2020-10-27 16:23:21,032 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 16:23:21,032 INFO  L481      AbstractCegarLoop]: Abstraction has 11138 states and 16145 transitions.
[2020-10-27 16:23:21,032 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-10-27 16:23:21,033 INFO  L276                IsEmpty]: Start isEmpty. Operand 11138 states and 16145 transitions.
[2020-10-27 16:23:21,092 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1721
[2020-10-27 16:23:21,092 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 16:23:21,094 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2020-10-27 16:23:21,094 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-27 16:23:21,094 INFO  L429      AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 16:23:21,095 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 16:23:21,096 INFO  L82        PathProgramCache]: Analyzing trace with hash 1338846065, now seen corresponding path program 1 times
[2020-10-27 16:23:21,096 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 16:23:21,096 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634689208]
[2020-10-27 16:23:21,097 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 16:23:21,251 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:23:21,297 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:23:21,591 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:23:26,430 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:23:26,430 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1746
[2020-10-27 16:23:26,430 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-27 16:23:26,431 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5175
[2020-10-27 16:23:26,431 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:23:26,431 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 36
[2020-10-27 16:23:26,431 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 36
[2020-10-27 16:23:26,432 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1426
[2020-10-27 16:23:26,432 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:23:30,985 WARN  L193               SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34
[2020-10-27 16:23:31,631 WARN  L193               SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 33
[2020-10-27 16:23:31,795 WARN  L193               SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35
[2020-10-27 16:23:31,971 WARN  L193               SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35
[2020-10-27 16:23:32,134 WARN  L193               SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 33
[2020-10-27 16:23:32,296 WARN  L193               SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36
[2020-10-27 16:23:32,452 WARN  L193               SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36
[2020-10-27 16:23:32,612 WARN  L193               SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36
[2020-10-27 16:23:32,908 WARN  L193               SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 36
[2020-10-27 16:23:33,115 WARN  L193               SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 36
[2020-10-27 16:23:33,509 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-27 16:23:33,514 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:23:33,516 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:23:33,526 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:23:33,526 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-27 16:23:33,526 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 16:23:33,526 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 11
[2020-10-27 16:23:33,527 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:23:33,527 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-27 16:23:33,527 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 16:23:33,527 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-27 16:23:33,527 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:23:33,581 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-27 16:23:33,589 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:23:33,594 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:23:33,618 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-27 16:23:33,619 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 27
[2020-10-27 16:23:33,619 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-27 16:23:33,619 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 28
[2020-10-27 16:23:33,619 FATAL L256   erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-10-27 16:23:33,620 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-27 16:23:33,620 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-27 16:23:33,620 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 21
[2020-10-27 16:23:33,620 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-27 16:23:56,085 INFO  L134       CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-27 16:23:56,086 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634689208]
[2020-10-27 16:23:56,086 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-27 16:23:56,087 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25
[2020-10-27 16:23:56,087 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795206407]
[2020-10-27 16:23:56,089 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 25 states
[2020-10-27 16:23:56,089 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-27 16:23:56,090 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2020-10-27 16:23:56,091 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600
[2020-10-27 16:23:56,091 INFO  L87              Difference]: Start difference. First operand 11138 states and 16145 transitions. Second operand 25 states.
[2020-10-27 16:23:57,071 WARN  L193               SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 98
[2020-10-27 16:23:57,318 WARN  L193               SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 106
[2020-10-27 16:24:08,696 WARN  L193               SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 98
[2020-10-27 16:24:08,959 WARN  L193               SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 106
[2020-10-27 16:24:20,717 WARN  L193               SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 98
[2020-10-27 16:24:20,994 WARN  L193               SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 106
[2020-10-27 16:24:31,806 WARN  L193               SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 105
[2020-10-27 16:24:33,426 WARN  L193               SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 99
[2020-10-27 16:24:33,710 WARN  L193               SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 108
[2020-10-27 16:24:37,762 WARN  L193               SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 107
[2020-10-27 16:24:39,737 WARN  L193               SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 107
[2020-10-27 16:24:46,461 WARN  L193               SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 100
[2020-10-27 16:24:46,744 WARN  L193               SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 107
[2020-10-27 16:24:56,799 WARN  L193               SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 106
[2020-10-27 16:24:59,411 WARN  L193               SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 100
[2020-10-27 16:24:59,697 WARN  L193               SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 106
[2020-10-27 16:25:04,314 WARN  L193               SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 96
[2020-10-27 16:25:13,198 WARN  L193               SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 89
[2020-10-27 16:25:13,411 WARN  L193               SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 91
[2020-10-27 16:25:26,825 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-27 16:25:26,825 INFO  L93              Difference]: Finished difference Result 23725 states and 35230 transitions.
[2020-10-27 16:25:26,827 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. 
[2020-10-27 16:25:26,827 INFO  L78                 Accepts]: Start accepts. Automaton has 25 states. Word has length 1720
[2020-10-27 16:25:26,830 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-27 16:25:26,891 INFO  L225             Difference]: With dead ends: 23725
[2020-10-27 16:25:26,891 INFO  L226             Difference]: Without dead ends: 12593
[2020-10-27 16:25:26,916 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=224, Invalid=1668, Unknown=0, NotChecked=0, Total=1892
[2020-10-27 16:25:26,933 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12593 states.
[2020-10-27 16:25:27,192 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12593 to 12569.
[2020-10-27 16:25:27,192 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 12569 states.
[2020-10-27 16:25:27,217 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12569 states to 12569 states and 17613 transitions.
[2020-10-27 16:25:27,218 INFO  L78                 Accepts]: Start accepts. Automaton has 12569 states and 17613 transitions. Word has length 1720
[2020-10-27 16:25:27,219 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-27 16:25:27,220 INFO  L481      AbstractCegarLoop]: Abstraction has 12569 states and 17613 transitions.
[2020-10-27 16:25:27,220 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 25 states.
[2020-10-27 16:25:27,220 INFO  L276                IsEmpty]: Start isEmpty. Operand 12569 states and 17613 transitions.
[2020-10-27 16:25:27,277 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1721
[2020-10-27 16:25:27,277 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-27 16:25:27,279 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2020-10-27 16:25:27,279 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-27 16:25:27,279 INFO  L429      AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-27 16:25:27,280 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-27 16:25:27,280 INFO  L82        PathProgramCache]: Analyzing trace with hash -1344808200, now seen corresponding path program 1 times
[2020-10-27 16:25:27,281 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-27 16:25:27,281 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497950951]
[2020-10-27 16:25:27,281 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-27 16:25:27,416 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-27 16:25:27,445 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:25:27,508 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-27 16:25:28,217 FATAL L256   erpolLogProxyWrapper]: Now shrinking...