/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_label04.c


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


This is Ultimate 0.2.0-0f64333
[2020-10-29 05:18:59,992 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-29 05:18:59,995 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-29 05:19:00,031 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-29 05:19:00,032 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-29 05:19:00,033 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-29 05:19:00,035 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-29 05:19:00,038 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-29 05:19:00,040 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-29 05:19:00,042 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-29 05:19:00,043 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-10-29 05:19:00,045 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-29 05:19:00,045 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-29 05:19:00,047 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-29 05:19:00,048 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-29 05:19:00,050 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-29 05:19:00,051 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-29 05:19:00,052 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-29 05:19:00,073 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-29 05:19:00,076 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-29 05:19:00,078 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-29 05:19:00,080 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-29 05:19:00,081 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-29 05:19:00,083 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-29 05:19:00,086 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-29 05:19:00,086 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-29 05:19:00,087 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-29 05:19:00,088 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-29 05:19:00,089 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-29 05:19:00,090 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-29 05:19:00,090 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-29 05:19:00,091 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-29 05:19:00,092 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-29 05:19:00,093 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-29 05:19:00,095 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-29 05:19:00,095 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-29 05:19:00,096 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-29 05:19:00,096 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-29 05:19:00,097 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-29 05:19:00,098 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-29 05:19:00,099 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-29 05:19:00,100 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 05:19:00,132 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-29 05:19:00,133 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-29 05:19:00,135 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-29 05:19:00,135 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-29 05:19:00,135 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-29 05:19:00,135 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-29 05:19:00,136 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-29 05:19:00,136 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-29 05:19:00,137 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-29 05:19:00,137 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-29 05:19:00,138 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-29 05:19:00,139 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-29 05:19:00,139 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-29 05:19:00,139 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-29 05:19:00,140 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-29 05:19:00,140 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-29 05:19:00,140 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-29 05:19:00,140 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-29 05:19:00,140 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-29 05:19:00,141 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-29 05:19:00,141 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-29 05:19:00,141 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-29 05:19:00,142 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-29 05:19:00,142 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-29 05:19:00,142 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-29 05:19:00,142 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-29 05:19:00,143 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-29 05:19:00,143 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-29 05:19:00,143 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-29 05:19:00,143 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true;
[2020-10-29 05:19:00,541 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-29 05:19:00,597 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-29 05:19:00,601 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-29 05:19:00,602 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-29 05:19:00,603 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-29 05:19:00,605 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label04.c
[2020-10-29 05:19:00,698 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14d2a28a8/c3e9b17e3ced49f285e0131eeac56884/FLAGe97b9cb8e
[2020-10-29 05:19:01,937 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-29 05:19:01,938 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label04.c
[2020-10-29 05:19:01,980 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14d2a28a8/c3e9b17e3ced49f285e0131eeac56884/FLAGe97b9cb8e
[2020-10-29 05:19:02,239 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14d2a28a8/c3e9b17e3ced49f285e0131eeac56884
[2020-10-29 05:19:02,245 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-29 05:19:02,252 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-29 05:19:02,255 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-29 05:19:02,255 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-29 05:19:02,259 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-29 05:19:02,260 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:19:02" (1/1) ...
[2020-10-29 05:19:02,264 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c928868 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:02, skipping insertion in model container
[2020-10-29 05:19:02,264 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:19:02" (1/1) ...
[2020-10-29 05:19:02,273 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-29 05:19:02,493 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-29 05:19:04,948 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-29 05:19:04,963 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-29 05:19:06,460 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-29 05:19:06,539 INFO  L208         MainTranslator]: Completed translation
[2020-10-29 05:19:06,540 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:06 WrapperNode
[2020-10-29 05:19:06,541 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-29 05:19:06,542 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-29 05:19:06,542 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-29 05:19:06,542 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-29 05:19:06,559 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:06" (1/1) ...
[2020-10-29 05:19:06,561 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:06" (1/1) ...
[2020-10-29 05:19:06,717 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:06" (1/1) ...
[2020-10-29 05:19:06,717 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:06" (1/1) ...
[2020-10-29 05:19:06,960 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:06" (1/1) ...
[2020-10-29 05:19:07,023 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:06" (1/1) ...
[2020-10-29 05:19:07,089 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:06" (1/1) ...
[2020-10-29 05:19:07,292 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-29 05:19:07,293 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-29 05:19:07,293 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-29 05:19:07,293 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-29 05:19:07,294 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:06" (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 05:19:07,378 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-29 05:19:07,378 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-29 05:19:07,379 INFO  L138     BoogieDeclarations]: Found implementation of procedure reach_error
[2020-10-29 05:19:07,379 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-29 05:19:07,379 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-29 05:19:07,379 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-29 05:19:07,379 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-29 05:19:07,379 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-29 05:19:07,380 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-29 05:19:07,380 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-29 05:19:07,380 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-29 05:19:07,380 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-29 05:19:07,380 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-29 05:19:07,380 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-29 05:19:07,380 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-29 05:19:07,381 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-29 05:19:07,381 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-29 05:19:07,381 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-29 05:19:07,381 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-29 05:19:07,381 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-29 05:19:07,381 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-10-29 05:19:07,382 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-29 05:19:07,382 INFO  L130     BoogieDeclarations]: Found specification of procedure reach_error
[2020-10-29 05:19:07,382 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-29 05:19:07,382 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-29 05:19:07,382 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-29 05:19:07,382 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-29 05:19:07,382 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-29 05:19:07,383 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-29 05:19:07,383 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-29 05:19:07,383 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-10-29 05:19:07,383 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-10-29 05:19:07,383 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-29 05:19:17,659 INFO  L293             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-29 05:19:17,660 INFO  L298             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-29 05:19:17,666 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:19:17 BoogieIcfgContainer
[2020-10-29 05:19:17,667 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-29 05:19:17,671 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-29 05:19:17,672 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-29 05:19:17,676 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-29 05:19:17,676 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:19:02" (1/3) ...
[2020-10-29 05:19:17,677 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1635d296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:19:17, skipping insertion in model container
[2020-10-29 05:19:17,677 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:19:06" (2/3) ...
[2020-10-29 05:19:17,678 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1635d296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:19:17, skipping insertion in model container
[2020-10-29 05:19:17,678 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:19:17" (3/3) ...
[2020-10-29 05:19:17,679 INFO  L111   eAbstractionObserver]: Analyzing ICFG Problem05_label04.c
[2020-10-29 05:19:17,692 INFO  L164   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-29 05:19:17,699 INFO  L176   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-29 05:19:17,713 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-29 05:19:17,765 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2020-10-29 05:19:17,765 INFO  L378      AbstractCegarLoop]: Hoare is true
[2020-10-29 05:19:17,765 INFO  L379      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-29 05:19:17,765 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-29 05:19:17,766 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-29 05:19:17,766 INFO  L382      AbstractCegarLoop]: Difference is false
[2020-10-29 05:19:17,766 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-29 05:19:17,766 INFO  L387      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-29 05:19:17,824 INFO  L276                IsEmpty]: Start isEmpty. Operand 2226 states.
[2020-10-29 05:19:17,978 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1714
[2020-10-29 05:19:17,979 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-29 05:19:17,982 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-29 05:19:17,983 INFO  L429      AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 05:19:17,993 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 05:19:17,995 INFO  L82        PathProgramCache]: Analyzing trace with hash 1267193593, now seen corresponding path program 1 times
[2020-10-29 05:19:18,005 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 05:19:18,005 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946491643]
[2020-10-29 05:19:18,006 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 05:19:19,096 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:19:19,625 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:19:24,245 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:19:24,245 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1737
[2020-10-29 05:19:24,246 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:19:24,247 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5138
[2020-10-29 05:19:24,249 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:19:24,251 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:19:24,251 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-29 05:19:24,251 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-29 05:19:24,251 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1728
[2020-10-29 05:19:24,252 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-10-29 05:19:25,876 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-29 05:19:25,896 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:19:25,911 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:19:25,934 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:19:25,935 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-29 05:19:25,936 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:19:25,936 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 38
[2020-10-29 05:19:25,936 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:19:25,936 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:19:25,937 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-29 05:19:25,937 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 05:19:25,937 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-29 05:19:25,937 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:19:29,054 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 05:19:29,055 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946491643]
[2020-10-29 05:19:29,057 INFO  L219   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-29 05:19:29,058 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-10-29 05:19:29,058 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297374983]
[2020-10-29 05:19:29,067 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-10-29 05:19:29,068 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-29 05:19:29,082 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-10-29 05:19:29,083 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-10-29 05:19:29,085 INFO  L87              Difference]: Start difference. First operand 2226 states. Second operand 4 states.
[2020-10-29 05:19:52,359 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-29 05:19:52,360 INFO  L93              Difference]: Finished difference Result 6365 states and 11967 transitions.
[2020-10-29 05:19:52,366 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-29 05:19:52,368 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1713
[2020-10-29 05:19:52,382 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-29 05:19:52,429 INFO  L225             Difference]: With dead ends: 6365
[2020-10-29 05:19:52,429 INFO  L226             Difference]: Without dead ends: 4075
[2020-10-29 05:19:52,443 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
[2020-10-29 05:19:52,471 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4075 states.
[2020-10-29 05:19:52,692 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4075 to 4005.
[2020-10-29 05:19:52,693 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4005 states.
[2020-10-29 05:19:52,717 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4005 states to 4005 states and 6505 transitions.
[2020-10-29 05:19:52,719 INFO  L78                 Accepts]: Start accepts. Automaton has 4005 states and 6505 transitions. Word has length 1713
[2020-10-29 05:19:52,725 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-29 05:19:52,726 INFO  L481      AbstractCegarLoop]: Abstraction has 4005 states and 6505 transitions.
[2020-10-29 05:19:52,727 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-10-29 05:19:52,727 INFO  L276                IsEmpty]: Start isEmpty. Operand 4005 states and 6505 transitions.
[2020-10-29 05:19:52,867 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1725
[2020-10-29 05:19:52,868 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-29 05:19:52,869 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-29 05:19:52,871 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-29 05:19:52,872 INFO  L429      AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 05:19:52,873 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 05:19:52,874 INFO  L82        PathProgramCache]: Analyzing trace with hash 1660301569, now seen corresponding path program 1 times
[2020-10-29 05:19:52,875 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 05:19:52,875 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922745424]
[2020-10-29 05:19:52,875 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 05:19:53,330 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:19:53,792 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:19:54,461 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:19:58,477 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:19:58,478 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1750
[2020-10-29 05:19:58,478 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-29 05:19:58,478 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5142
[2020-10-29 05:19:58,479 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:19:58,479 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:19:58,479 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 18
[2020-10-29 05:19:58,480 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 21
[2020-10-29 05:19:58,481 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1725
[2020-10-29 05:19:58,481 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-10-29 05:20:00,194 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-29 05:20:00,197 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:20:00,199 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:20:00,204 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:20:00,204 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-29 05:20:00,204 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:20:00,204 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 6
[2020-10-29 05:20:00,205 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:20:00,205 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:20:00,205 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-29 05:20:00,205 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 05:20:00,205 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-29 05:20:00,205 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:20:00,228 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-29 05:20:00,232 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:20:00,234 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:20:00,247 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:20:00,247 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-10-29 05:20:00,248 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:20:00,248 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 14
[2020-10-29 05:20:00,248 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:20:00,248 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:20:00,248 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-29 05:20:00,249 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 05:20:00,249 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-10-29 05:20:00,249 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-29 05:20:02,887 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 05:20:02,888 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922745424]
[2020-10-29 05:20:02,888 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-29 05:20:02,888 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5
[2020-10-29 05:20:02,889 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912502616]
[2020-10-29 05:20:02,893 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-29 05:20:02,893 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-29 05:20:02,894 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-29 05:20:02,894 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-29 05:20:02,894 INFO  L87              Difference]: Start difference. First operand 4005 states and 6505 transitions. Second operand 5 states.
[2020-10-29 05:20:29,661 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-29 05:20:29,662 INFO  L93              Difference]: Finished difference Result 11599 states and 19034 transitions.
[2020-10-29 05:20:29,668 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-10-29 05:20:29,669 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 1724
[2020-10-29 05:20:29,673 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-29 05:20:29,716 INFO  L225             Difference]: With dead ends: 11599
[2020-10-29 05:20:29,716 INFO  L226             Difference]: Without dead ends: 7600
[2020-10-29 05:20:29,729 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 05:20:29,742 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7600 states.
[2020-10-29 05:20:29,923 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7600 to 7557.
[2020-10-29 05:20:29,923 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 7557 states.
[2020-10-29 05:20:29,949 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7557 states to 7557 states and 10688 transitions.
[2020-10-29 05:20:29,949 INFO  L78                 Accepts]: Start accepts. Automaton has 7557 states and 10688 transitions. Word has length 1724
[2020-10-29 05:20:29,954 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-29 05:20:29,954 INFO  L481      AbstractCegarLoop]: Abstraction has 7557 states and 10688 transitions.
[2020-10-29 05:20:29,954 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-29 05:20:29,954 INFO  L276                IsEmpty]: Start isEmpty. Operand 7557 states and 10688 transitions.
[2020-10-29 05:20:30,097 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1726
[2020-10-29 05:20:30,097 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-29 05:20:30,099 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-29 05:20:30,099 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-29 05:20:30,099 INFO  L429      AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 05:20:30,100 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 05:20:30,100 INFO  L82        PathProgramCache]: Analyzing trace with hash -1294295299, now seen corresponding path program 1 times
[2020-10-29 05:20:30,101 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 05:20:30,101 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201157401]
[2020-10-29 05:20:30,102 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 05:20:30,237 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:20:30,265 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:20:30,577 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:20:35,374 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:20:35,374 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1751
[2020-10-29 05:20:35,374 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-29 05:20:35,374 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5132
[2020-10-29 05:20:35,375 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:20:35,375 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:20:35,375 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 32
[2020-10-29 05:20:35,375 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 22
[2020-10-29 05:20:35,375 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1273
[2020-10-29 05:20:35,376 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-29 05:20:40,226 WARN  L193               SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53
[2020-10-29 05:20:40,494 WARN  L193               SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 53
[2020-10-29 05:20:40,855 WARN  L193               SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 56
[2020-10-29 05:20:41,083 WARN  L193               SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 41
[2020-10-29 05:20:41,251 WARN  L193               SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40
[2020-10-29 05:20:41,443 WARN  L193               SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40
[2020-10-29 05:20:41,616 WARN  L193               SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37
[2020-10-29 05:20:41,765 WARN  L193               SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37
[2020-10-29 05:20:42,549 WARN  L193               SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 40
[2020-10-29 05:20:42,778 WARN  L193               SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 40
[2020-10-29 05:20:43,074 WARN  L193               SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 41
[2020-10-29 05:20:43,188 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-29 05:20:43,191 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:20:43,192 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:20:43,196 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:20:43,197 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-29 05:20:43,197 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:20:43,197 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-10-29 05:20:43,197 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:20:43,197 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:20:43,198 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-29 05:20:43,198 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 05:20:43,198 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-29 05:20:43,198 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:20:43,250 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-29 05:20:43,255 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:20:43,257 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:20:43,266 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:20:43,266 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-10-29 05:20:43,267 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:20:43,267 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 11
[2020-10-29 05:20:43,267 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:20:43,267 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:20:43,267 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-29 05:20:43,267 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 05:20:43,268 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-10-29 05:20:43,268 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:21:09,136 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-29 05:21:09,136 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201157401]
[2020-10-29 05:21:09,137 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-29 05:21:09,137 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23
[2020-10-29 05:21:09,137 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978576472]
[2020-10-29 05:21:09,139 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 23 states
[2020-10-29 05:21:09,140 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-29 05:21:09,140 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2020-10-29 05:21:09,141 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506
[2020-10-29 05:21:09,141 INFO  L87              Difference]: Start difference. First operand 7557 states and 10688 transitions. Second operand 23 states.
[2020-10-29 05:21:09,667 WARN  L193               SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 116
[2020-10-29 05:21:10,002 WARN  L193               SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 136
[2020-10-29 05:21:14,256 WARN  L193               SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 132
[2020-10-29 05:21:17,906 WARN  L193               SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 126
[2020-10-29 05:21:20,518 WARN  L193               SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 104
[2020-10-29 05:21:20,790 WARN  L193               SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 118
[2020-10-29 05:21:22,017 WARN  L193               SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 115
[2020-10-29 05:21:25,905 WARN  L193               SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 113
[2020-10-29 05:21:30,965 WARN  L193               SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 101
[2020-10-29 05:21:31,249 WARN  L193               SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 109
[2020-10-29 05:21:40,718 WARN  L193               SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 101
[2020-10-29 05:21:40,981 WARN  L193               SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 109
[2020-10-29 05:21:50,762 WARN  L193               SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 101
[2020-10-29 05:21:51,037 WARN  L193               SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 109
[2020-10-29 05:22:00,919 WARN  L193               SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 104
[2020-10-29 05:22:01,214 WARN  L193               SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 112
[2020-10-29 05:22:06,165 WARN  L193               SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 104
[2020-10-29 05:22:17,831 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-29 05:22:17,831 INFO  L93              Difference]: Finished difference Result 16429 states and 23997 transitions.
[2020-10-29 05:22:17,834 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. 
[2020-10-29 05:22:17,834 INFO  L78                 Accepts]: Start accepts. Automaton has 23 states. Word has length 1725
[2020-10-29 05:22:17,837 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-29 05:22:17,878 INFO  L225             Difference]: With dead ends: 16429
[2020-10-29 05:22:17,879 INFO  L226             Difference]: Without dead ends: 8878
[2020-10-29 05:22:17,898 INFO  L677         BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=207, Invalid=1353, Unknown=0, NotChecked=0, Total=1560
[2020-10-29 05:22:17,912 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8878 states.
[2020-10-29 05:22:18,111 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8878 to 8848.
[2020-10-29 05:22:18,111 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 8848 states.
[2020-10-29 05:22:18,132 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8848 states to 8848 states and 11999 transitions.
[2020-10-29 05:22:18,132 INFO  L78                 Accepts]: Start accepts. Automaton has 8848 states and 11999 transitions. Word has length 1725
[2020-10-29 05:22:18,135 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-29 05:22:18,135 INFO  L481      AbstractCegarLoop]: Abstraction has 8848 states and 11999 transitions.
[2020-10-29 05:22:18,135 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 23 states.
[2020-10-29 05:22:18,135 INFO  L276                IsEmpty]: Start isEmpty. Operand 8848 states and 11999 transitions.
[2020-10-29 05:22:18,190 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1736
[2020-10-29 05:22:18,190 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-29 05:22:18,192 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2020-10-29 05:22:18,193 WARN  L518      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-29 05:22:18,193 INFO  L429      AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 05:22:18,193 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 05:22:18,194 INFO  L82        PathProgramCache]: Analyzing trace with hash -1760122216, now seen corresponding path program 1 times
[2020-10-29 05:22:18,195 INFO  L162   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 05:22:18,195 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761737363]
[2020-10-29 05:22:18,195 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 05:22:18,619 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:22:18,885 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:22:19,428 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:22:22,111 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:22:23,747 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:22:23,748 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1761
[2020-10-29 05:22:23,748 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-29 05:22:23,748 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5125
[2020-10-29 05:22:23,748 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:22:23,748 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:22:23,749 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 18
[2020-10-29 05:22:23,749 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 32
[2020-10-29 05:22:23,749 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1725
[2020-10-29 05:22:23,749 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:22:24,990 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-29 05:22:24,993 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:22:24,994 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:22:25,003 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:22:25,003 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-29 05:22:25,004 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:22:25,004 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-10-29 05:22:25,004 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:22:25,004 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:22:25,004 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-29 05:22:25,004 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 05:22:25,005 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-29 05:22:25,005 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:22:25,034 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-29 05:22:25,040 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 05:22:25,045 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 05:22:25,066 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 05:22:25,067 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 23
[2020-10-29 05:22:25,067 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 05:22:25,067 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 26
[2020-10-29 05:22:25,067 FATAL L256   erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 05:22:25,067 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 05:22:25,068 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-29 05:22:25,068 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 05:22:25,068 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 17
[2020-10-29 05:22:25,068 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-29 05:22:27,470 INFO  L134       CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-29 05:22:27,471 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761737363]
[2020-10-29 05:22:27,471 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-29 05:22:27,471 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5
[2020-10-29 05:22:27,471 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222923043]
[2020-10-29 05:22:27,473 INFO  L461      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-29 05:22:27,474 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-29 05:22:27,474 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-29 05:22:27,474 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-29 05:22:27,475 INFO  L87              Difference]: Start difference. First operand 8848 states and 11999 transitions. Second operand 5 states.