java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label04.c


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


This is Ultimate 0.1.24-f4eb214f-m
[2019-10-13 17:59:23,551 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-10-13 17:59:23,554 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-10-13 17:59:23,574 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-10-13 17:59:23,574 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-10-13 17:59:23,577 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-10-13 17:59:23,579 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2019-10-13 17:59:23,589 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2019-10-13 17:59:23,593 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2019-10-13 17:59:23,596 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2019-10-13 17:59:23,599 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2019-10-13 17:59:23,601 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2019-10-13 17:59:23,601 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2019-10-13 17:59:23,603 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2019-10-13 17:59:23,605 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2019-10-13 17:59:23,607 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-10-13 17:59:23,608 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-10-13 17:59:23,609 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-10-13 17:59:23,611 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-10-13 17:59:23,615 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2019-10-13 17:59:23,620 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-10-13 17:59:23,623 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-10-13 17:59:23,626 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2019-10-13 17:59:23,627 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-10-13 17:59:23,630 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2019-10-13 17:59:23,630 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2019-10-13 17:59:23,630 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2019-10-13 17:59:23,632 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2019-10-13 17:59:23,634 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2019-10-13 17:59:23,635 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2019-10-13 17:59:23,635 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2019-10-13 17:59:23,637 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2019-10-13 17:59:23,638 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2019-10-13 17:59:23,638 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2019-10-13 17:59:23,640 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2019-10-13 17:59:23,640 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2019-10-13 17:59:23,641 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2019-10-13 17:59:23,641 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2019-10-13 17:59:23,641 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2019-10-13 17:59:23,642 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2019-10-13 17:59:23,643 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-10-13 17:59:23,644 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2019-10-13 17:59:23,677 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-13 17:59:23,677 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-13 17:59:23,681 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-13 17:59:23,682 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-13 17:59:23,682 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-13 17:59:23,682 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-13 17:59:23,682 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-13 17:59:23,682 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-13 17:59:23,683 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-13 17:59:23,683 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-13 17:59:23,683 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-13 17:59:23,685 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-13 17:59:23,685 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-13 17:59:23,685 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-13 17:59:23,685 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-13 17:59:23,686 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-13 17:59:23,686 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-13 17:59:23,686 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-13 17:59:23,686 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-13 17:59:23,686 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-13 17:59:23,687 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-13 17:59:23,687 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-13 17:59:23,687 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-13 17:59:23,687 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-13 17:59:23,687 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-13 17:59:23,687 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-13 17:59:23,688 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-13 17:59:23,688 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-13 17:59:23,688 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-10-13 17:59:23,951 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-13 17:59:23,963 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-13 17:59:23,968 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-13 17:59:23,970 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-13 17:59:23,970 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-13 17:59:23,974 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label04.c
[2019-10-13 17:59:24,052 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06b10940c/579c7670fdb44936b7c367de723df733/FLAGdb81be31a
[2019-10-13 17:59:24,655 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-13 17:59:24,655 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label04.c
[2019-10-13 17:59:24,675 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06b10940c/579c7670fdb44936b7c367de723df733/FLAGdb81be31a
[2019-10-13 17:59:24,800 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06b10940c/579c7670fdb44936b7c367de723df733
[2019-10-13 17:59:24,809 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-13 17:59:24,810 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-13 17:59:24,811 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-13 17:59:24,811 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-13 17:59:24,817 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-13 17:59:24,818 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:59:24" (1/1) ...
[2019-10-13 17:59:24,820 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f28d6e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:24, skipping insertion in model container
[2019-10-13 17:59:24,821 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:59:24" (1/1) ...
[2019-10-13 17:59:24,828 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-13 17:59:24,887 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-13 17:59:25,566 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 17:59:25,572 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-13 17:59:25,760 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 17:59:25,785 INFO  L192         MainTranslator]: Completed translation
[2019-10-13 17:59:25,786 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:25 WrapperNode
[2019-10-13 17:59:25,786 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-13 17:59:25,787 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-13 17:59:25,787 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-13 17:59:25,787 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-13 17:59:25,807 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:25" (1/1) ...
[2019-10-13 17:59:25,808 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:25" (1/1) ...
[2019-10-13 17:59:25,848 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:25" (1/1) ...
[2019-10-13 17:59:25,848 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:25" (1/1) ...
[2019-10-13 17:59:25,927 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:25" (1/1) ...
[2019-10-13 17:59:25,939 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:25" (1/1) ...
[2019-10-13 17:59:25,950 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:25" (1/1) ...
[2019-10-13 17:59:25,974 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-13 17:59:25,974 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-13 17:59:25,975 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-13 17:59:25,975 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-13 17:59:25,976 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:25" (1/1) ...
No working directory specified, using /storage/repos/ultimate/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
[2019-10-13 17:59:26,037 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-13 17:59:26,038 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-13 17:59:26,038 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-10-13 17:59:26,038 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-13 17:59:26,039 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-10-13 17:59:26,039 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-13 17:59:26,040 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-13 17:59:26,040 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-10-13 17:59:26,041 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-13 17:59:26,041 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-13 17:59:26,041 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-13 17:59:27,998 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-13 17:59:27,999 INFO  L284             CfgBuilder]: Removed 1 assume(true) statements.
[2019-10-13 17:59:28,001 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:59:28 BoogieIcfgContainer
[2019-10-13 17:59:28,002 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-13 17:59:28,004 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-13 17:59:28,006 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-13 17:59:28,010 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-13 17:59:28,010 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 05:59:24" (1/3) ...
[2019-10-13 17:59:28,011 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34357c0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:59:28, skipping insertion in model container
[2019-10-13 17:59:28,011 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:59:25" (2/3) ...
[2019-10-13 17:59:28,012 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34357c0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:59:28, skipping insertion in model container
[2019-10-13 17:59:28,012 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:59:28" (3/3) ...
[2019-10-13 17:59:28,026 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem11_label04.c
[2019-10-13 17:59:28,040 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-13 17:59:28,051 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-13 17:59:28,064 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-13 17:59:28,113 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-13 17:59:28,114 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-13 17:59:28,114 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-13 17:59:28,114 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-13 17:59:28,114 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-13 17:59:28,115 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-13 17:59:28,115 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-13 17:59:28,115 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-13 17:59:28,163 INFO  L276                IsEmpty]: Start isEmpty. Operand 292 states.
[2019-10-13 17:59:28,176 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 60
[2019-10-13 17:59:28,177 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 17:59:28,178 INFO  L380         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]
[2019-10-13 17:59:28,181 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 17:59:28,187 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 17:59:28,188 INFO  L82        PathProgramCache]: Analyzing trace with hash 1796892554, now seen corresponding path program 1 times
[2019-10-13 17:59:28,199 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 17:59:28,199 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803638321]
[2019-10-13 17:59:28,200 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:59:28,200 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:59:28,200 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 17:59:28,391 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:28,748 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:28,789 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 17:59:28,790 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803638321]
[2019-10-13 17:59:28,791 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 17:59:28,791 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-13 17:59:28,792 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223198788]
[2019-10-13 17:59:28,797 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 17:59:28,797 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 17:59:28,811 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 17:59:28,812 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-10-13 17:59:28,815 INFO  L87              Difference]: Start difference. First operand 292 states. Second operand 5 states.
[2019-10-13 17:59:32,684 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 17:59:32,685 INFO  L93              Difference]: Finished difference Result 993 states and 1777 transitions.
[2019-10-13 17:59:32,685 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-13 17:59:32,687 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 59
[2019-10-13 17:59:32,688 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 17:59:32,710 INFO  L225             Difference]: With dead ends: 993
[2019-10-13 17:59:32,710 INFO  L226             Difference]: Without dead ends: 632
[2019-10-13 17:59:32,720 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2019-10-13 17:59:32,743 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 632 states.
[2019-10-13 17:59:32,817 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 628.
[2019-10-13 17:59:32,819 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 628 states.
[2019-10-13 17:59:32,822 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 886 transitions.
[2019-10-13 17:59:32,824 INFO  L78                 Accepts]: Start accepts. Automaton has 628 states and 886 transitions. Word has length 59
[2019-10-13 17:59:32,825 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 17:59:32,825 INFO  L462      AbstractCegarLoop]: Abstraction has 628 states and 886 transitions.
[2019-10-13 17:59:32,825 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 17:59:32,825 INFO  L276                IsEmpty]: Start isEmpty. Operand 628 states and 886 transitions.
[2019-10-13 17:59:32,832 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 140
[2019-10-13 17:59:32,832 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 17:59:32,833 INFO  L380         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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 17:59:32,833 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 17:59:32,834 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 17:59:32,834 INFO  L82        PathProgramCache]: Analyzing trace with hash -676009126, now seen corresponding path program 1 times
[2019-10-13 17:59:32,834 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 17:59:32,835 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587720560]
[2019-10-13 17:59:32,835 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:59:32,835 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:59:32,835 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 17:59:32,886 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:33,019 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:33,053 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:33,166 INFO  L134       CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 17:59:33,167 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587720560]
[2019-10-13 17:59:33,167 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 17:59:33,168 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2019-10-13 17:59:33,168 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104949449]
[2019-10-13 17:59:33,170 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 8 states
[2019-10-13 17:59:33,170 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 17:59:33,171 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2019-10-13 17:59:33,171 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2019-10-13 17:59:33,171 INFO  L87              Difference]: Start difference. First operand 628 states and 886 transitions. Second operand 8 states.
[2019-10-13 17:59:36,283 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 17:59:36,284 INFO  L93              Difference]: Finished difference Result 1873 states and 2696 transitions.
[2019-10-13 17:59:36,284 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2019-10-13 17:59:36,284 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 139
[2019-10-13 17:59:36,285 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 17:59:36,295 INFO  L225             Difference]: With dead ends: 1873
[2019-10-13 17:59:36,295 INFO  L226             Difference]: Without dead ends: 1251
[2019-10-13 17:59:36,299 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156
[2019-10-13 17:59:36,301 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1251 states.
[2019-10-13 17:59:36,391 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1226.
[2019-10-13 17:59:36,392 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1226 states.
[2019-10-13 17:59:36,398 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1619 transitions.
[2019-10-13 17:59:36,398 INFO  L78                 Accepts]: Start accepts. Automaton has 1226 states and 1619 transitions. Word has length 139
[2019-10-13 17:59:36,401 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 17:59:36,401 INFO  L462      AbstractCegarLoop]: Abstraction has 1226 states and 1619 transitions.
[2019-10-13 17:59:36,401 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2019-10-13 17:59:36,401 INFO  L276                IsEmpty]: Start isEmpty. Operand 1226 states and 1619 transitions.
[2019-10-13 17:59:36,417 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 191
[2019-10-13 17:59:36,418 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 17:59:36,418 INFO  L380         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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 17:59:36,418 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 17:59:36,419 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 17:59:36,419 INFO  L82        PathProgramCache]: Analyzing trace with hash 828635490, now seen corresponding path program 1 times
[2019-10-13 17:59:36,420 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 17:59:36,421 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332415570]
[2019-10-13 17:59:36,422 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:59:36,422 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:59:36,422 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 17:59:36,501 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:36,604 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:36,667 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:36,795 INFO  L134       CoverageAnalysis]: Checked inductivity of 52 backedges. 48 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 17:59:36,796 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332415570]
[2019-10-13 17:59:36,796 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556300116]
[2019-10-13 17:59:36,796 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 17:59:36,904 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:36,909 INFO  L256         TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-13 17:59:36,941 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 17:59:37,045 INFO  L134       CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 17:59:37,046 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-13 17:59:37,046 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8
[2019-10-13 17:59:37,046 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444353506]
[2019-10-13 17:59:37,047 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-13 17:59:37,048 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 17:59:37,048 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-13 17:59:37,048 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2019-10-13 17:59:37,048 INFO  L87              Difference]: Start difference. First operand 1226 states and 1619 transitions. Second operand 3 states.
[2019-10-13 17:59:38,271 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 17:59:38,272 INFO  L93              Difference]: Finished difference Result 3612 states and 4883 transitions.
[2019-10-13 17:59:38,272 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-10-13 17:59:38,272 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 190
[2019-10-13 17:59:38,273 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 17:59:38,287 INFO  L225             Difference]: With dead ends: 3612
[2019-10-13 17:59:38,287 INFO  L226             Difference]: Without dead ends: 2392
[2019-10-13 17:59:38,291 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2019-10-13 17:59:38,294 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2392 states.
[2019-10-13 17:59:38,350 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2392 to 2189.
[2019-10-13 17:59:38,351 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2189 states.
[2019-10-13 17:59:38,360 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2189 states to 2189 states and 2912 transitions.
[2019-10-13 17:59:38,360 INFO  L78                 Accepts]: Start accepts. Automaton has 2189 states and 2912 transitions. Word has length 190
[2019-10-13 17:59:38,361 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 17:59:38,361 INFO  L462      AbstractCegarLoop]: Abstraction has 2189 states and 2912 transitions.
[2019-10-13 17:59:38,361 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-13 17:59:38,361 INFO  L276                IsEmpty]: Start isEmpty. Operand 2189 states and 2912 transitions.
[2019-10-13 17:59:38,366 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 226
[2019-10-13 17:59:38,366 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 17:59:38,367 INFO  L380         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 17:59:38,572 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 17:59:38,572 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 17:59:38,573 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 17:59:38,573 INFO  L82        PathProgramCache]: Analyzing trace with hash 1126757590, now seen corresponding path program 1 times
[2019-10-13 17:59:38,573 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 17:59:38,574 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902251131]
[2019-10-13 17:59:38,574 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:59:38,575 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:59:38,575 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 17:59:38,602 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:38,694 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:38,730 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:38,859 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:39,035 INFO  L134       CoverageAnalysis]: Checked inductivity of 176 backedges. 104 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2019-10-13 17:59:39,035 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902251131]
[2019-10-13 17:59:39,036 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804561347]
[2019-10-13 17:59:39,036 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 17:59:39,149 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:39,152 INFO  L256         TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 6 conjunts are in the unsatisfiable core
[2019-10-13 17:59:39,168 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 17:59:39,269 INFO  L134       CoverageAnalysis]: Checked inductivity of 176 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked.
[2019-10-13 17:59:39,270 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-13 17:59:39,270 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11
[2019-10-13 17:59:39,271 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331529458]
[2019-10-13 17:59:39,272 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 17:59:39,272 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 17:59:39,272 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 17:59:39,272 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110
[2019-10-13 17:59:39,273 INFO  L87              Difference]: Start difference. First operand 2189 states and 2912 transitions. Second operand 5 states.
[2019-10-13 17:59:40,917 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 17:59:40,917 INFO  L93              Difference]: Finished difference Result 5406 states and 7546 transitions.
[2019-10-13 17:59:40,920 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-13 17:59:40,920 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 225
[2019-10-13 17:59:40,922 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 17:59:40,943 INFO  L225             Difference]: With dead ends: 5406
[2019-10-13 17:59:40,944 INFO  L226             Difference]: Without dead ends: 3223
[2019-10-13 17:59:40,951 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182
[2019-10-13 17:59:40,955 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3223 states.
[2019-10-13 17:59:41,053 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3223 to 3183.
[2019-10-13 17:59:41,053 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3183 states.
[2019-10-13 17:59:41,071 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3183 states to 3183 states and 4270 transitions.
[2019-10-13 17:59:41,071 INFO  L78                 Accepts]: Start accepts. Automaton has 3183 states and 4270 transitions. Word has length 225
[2019-10-13 17:59:41,072 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 17:59:41,072 INFO  L462      AbstractCegarLoop]: Abstraction has 3183 states and 4270 transitions.
[2019-10-13 17:59:41,072 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 17:59:41,072 INFO  L276                IsEmpty]: Start isEmpty. Operand 3183 states and 4270 transitions.
[2019-10-13 17:59:41,077 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 227
[2019-10-13 17:59:41,079 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 17:59:41,079 INFO  L380         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 17:59:41,282 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 17:59:41,285 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 17:59:41,286 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 17:59:41,286 INFO  L82        PathProgramCache]: Analyzing trace with hash 654768965, now seen corresponding path program 1 times
[2019-10-13 17:59:41,286 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 17:59:41,286 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8243424]
[2019-10-13 17:59:41,286 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:59:41,287 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:59:41,287 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 17:59:41,323 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:41,422 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:41,442 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:41,471 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:41,545 INFO  L134       CoverageAnalysis]: Checked inductivity of 177 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked.
[2019-10-13 17:59:41,546 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8243424]
[2019-10-13 17:59:41,546 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218127886]
[2019-10-13 17:59:41,546 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 17:59:41,692 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:41,695 INFO  L256         TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-13 17:59:41,700 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 17:59:41,813 INFO  L134       CoverageAnalysis]: Checked inductivity of 177 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked.
[2019-10-13 17:59:41,814 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-13 17:59:41,815 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2019-10-13 17:59:41,815 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163260348]
[2019-10-13 17:59:41,816 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-13 17:59:41,816 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 17:59:41,817 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-13 17:59:41,817 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2019-10-13 17:59:41,817 INFO  L87              Difference]: Start difference. First operand 3183 states and 4270 transitions. Second operand 3 states.
[2019-10-13 17:59:42,930 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 17:59:42,931 INFO  L93              Difference]: Finished difference Result 7147 states and 9731 transitions.
[2019-10-13 17:59:42,931 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-10-13 17:59:42,931 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 226
[2019-10-13 17:59:42,932 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 17:59:42,955 INFO  L225             Difference]: With dead ends: 7147
[2019-10-13 17:59:42,955 INFO  L226             Difference]: Without dead ends: 4158
[2019-10-13 17:59:42,964 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 231 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2019-10-13 17:59:42,972 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4158 states.
[2019-10-13 17:59:43,071 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4158 to 3953.
[2019-10-13 17:59:43,072 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3953 states.
[2019-10-13 17:59:43,091 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3953 states to 3953 states and 5305 transitions.
[2019-10-13 17:59:43,093 INFO  L78                 Accepts]: Start accepts. Automaton has 3953 states and 5305 transitions. Word has length 226
[2019-10-13 17:59:43,098 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 17:59:43,098 INFO  L462      AbstractCegarLoop]: Abstraction has 3953 states and 5305 transitions.
[2019-10-13 17:59:43,099 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-13 17:59:43,099 INFO  L276                IsEmpty]: Start isEmpty. Operand 3953 states and 5305 transitions.
[2019-10-13 17:59:43,108 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 272
[2019-10-13 17:59:43,108 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 17:59:43,109 INFO  L380         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 17:59:43,311 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 17:59:43,312 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 17:59:43,312 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 17:59:43,312 INFO  L82        PathProgramCache]: Analyzing trace with hash -1068121551, now seen corresponding path program 1 times
[2019-10-13 17:59:43,312 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 17:59:43,312 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058072382]
[2019-10-13 17:59:43,313 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:59:43,313 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:59:43,313 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 17:59:43,371 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:43,524 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:43,570 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:43,671 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:43,828 INFO  L134       CoverageAnalysis]: Checked inductivity of 185 backedges. 7 proven. 103 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked.
[2019-10-13 17:59:43,828 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058072382]
[2019-10-13 17:59:43,829 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742020815]
[2019-10-13 17:59:43,829 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 17:59:43,945 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:43,947 INFO  L256         TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 7 conjunts are in the unsatisfiable core
[2019-10-13 17:59:43,955 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 17:59:44,087 INFO  L134       CoverageAnalysis]: Checked inductivity of 185 backedges. 183 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 17:59:44,088 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-13 17:59:44,088 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 14
[2019-10-13 17:59:44,089 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207000620]
[2019-10-13 17:59:44,089 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 14 states
[2019-10-13 17:59:44,090 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 17:59:44,090 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2019-10-13 17:59:44,090 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182
[2019-10-13 17:59:44,091 INFO  L87              Difference]: Start difference. First operand 3953 states and 5305 transitions. Second operand 14 states.
[2019-10-13 17:59:56,903 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 17:59:56,903 INFO  L93              Difference]: Finished difference Result 14359 states and 21427 transitions.
[2019-10-13 17:59:56,904 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. 
[2019-10-13 17:59:56,904 INFO  L78                 Accepts]: Start accepts. Automaton has 14 states. Word has length 271
[2019-10-13 17:59:56,904 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 17:59:56,964 INFO  L225             Difference]: With dead ends: 14359
[2019-10-13 17:59:56,965 INFO  L226             Difference]: Without dead ends: 10600
[2019-10-13 17:59:56,983 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2613 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1213, Invalid=5927, Unknown=0, NotChecked=0, Total=7140
[2019-10-13 17:59:56,995 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10600 states.
[2019-10-13 17:59:57,401 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10600 to 9889.
[2019-10-13 17:59:57,401 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 9889 states.
[2019-10-13 17:59:57,423 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9889 states to 9889 states and 13534 transitions.
[2019-10-13 17:59:57,423 INFO  L78                 Accepts]: Start accepts. Automaton has 9889 states and 13534 transitions. Word has length 271
[2019-10-13 17:59:57,424 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 17:59:57,424 INFO  L462      AbstractCegarLoop]: Abstraction has 9889 states and 13534 transitions.
[2019-10-13 17:59:57,424 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 14 states.
[2019-10-13 17:59:57,424 INFO  L276                IsEmpty]: Start isEmpty. Operand 9889 states and 13534 transitions.
[2019-10-13 17:59:57,440 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 277
[2019-10-13 17:59:57,440 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 17:59:57,441 INFO  L380         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 17:59:57,645 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 17:59:57,646 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 17:59:57,646 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 17:59:57,646 INFO  L82        PathProgramCache]: Analyzing trace with hash -1870221570, now seen corresponding path program 1 times
[2019-10-13 17:59:57,646 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 17:59:57,647 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196975090]
[2019-10-13 17:59:57,647 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:59:57,648 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 17:59:57,648 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 17:59:57,708 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:57,816 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:57,833 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:57,885 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:57,996 INFO  L134       CoverageAnalysis]: Checked inductivity of 177 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked.
[2019-10-13 17:59:57,997 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196975090]
[2019-10-13 17:59:57,998 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803889595]
[2019-10-13 17:59:57,998 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 17:59:58,102 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 17:59:58,104 INFO  L256         TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-13 17:59:58,120 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 17:59:58,180 INFO  L134       CoverageAnalysis]: Checked inductivity of 177 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked.
[2019-10-13 17:59:58,180 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-13 17:59:58,181 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6
[2019-10-13 17:59:58,181 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898200661]
[2019-10-13 17:59:58,182 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-13 17:59:58,182 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 17:59:58,182 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-13 17:59:58,182 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-10-13 17:59:58,182 INFO  L87              Difference]: Start difference. First operand 9889 states and 13534 transitions. Second operand 3 states.
[2019-10-13 17:59:59,411 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 17:59:59,411 INFO  L93              Difference]: Finished difference Result 22828 states and 31926 transitions.
[2019-10-13 17:59:59,412 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-10-13 17:59:59,412 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 276
[2019-10-13 17:59:59,413 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 17:59:59,474 INFO  L225             Difference]: With dead ends: 22828
[2019-10-13 17:59:59,474 INFO  L226             Difference]: Without dead ends: 13323
[2019-10-13 17:59:59,501 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 281 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-10-13 17:59:59,518 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13323 states.
[2019-10-13 17:59:59,784 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13323 to 11805.
[2019-10-13 17:59:59,785 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 11805 states.
[2019-10-13 17:59:59,810 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11805 states to 11805 states and 15835 transitions.
[2019-10-13 17:59:59,810 INFO  L78                 Accepts]: Start accepts. Automaton has 11805 states and 15835 transitions. Word has length 276
[2019-10-13 17:59:59,811 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 17:59:59,811 INFO  L462      AbstractCegarLoop]: Abstraction has 11805 states and 15835 transitions.
[2019-10-13 17:59:59,813 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-13 17:59:59,813 INFO  L276                IsEmpty]: Start isEmpty. Operand 11805 states and 15835 transitions.
[2019-10-13 17:59:59,835 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 294
[2019-10-13 17:59:59,835 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 17:59:59,836 INFO  L380         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 18:00:00,048 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 18:00:00,048 INFO  L410      AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:00:00,049 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:00:00,049 INFO  L82        PathProgramCache]: Analyzing trace with hash -1456020950, now seen corresponding path program 1 times
[2019-10-13 18:00:00,049 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:00:00,049 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563593104]
[2019-10-13 18:00:00,049 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:00:00,050 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:00:00,050 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:00:00,093 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:00,183 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:00,206 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:00,233 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:00,261 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:00,401 INFO  L134       CoverageAnalysis]: Checked inductivity of 382 backedges. 303 proven. 4 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked.
[2019-10-13 18:00:00,401 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563593104]
[2019-10-13 18:00:00,402 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162250072]
[2019-10-13 18:00:00,402 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 18:00:00,509 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:00,511 INFO  L256         TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 7 conjunts are in the unsatisfiable core
[2019-10-13 18:00:00,514 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 18:00:01,079 INFO  L134       CoverageAnalysis]: Checked inductivity of 382 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked.
[2019-10-13 18:00:01,080 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-13 18:00:01,080 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 8
[2019-10-13 18:00:01,080 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146107396]
[2019-10-13 18:00:01,081 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 8 states
[2019-10-13 18:00:01,081 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:00:01,081 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2019-10-13 18:00:01,082 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2019-10-13 18:00:01,082 INFO  L87              Difference]: Start difference. First operand 11805 states and 15835 transitions. Second operand 8 states.