/usr/bin/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/Problem14_label23.c


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This is Ultimate 0.1.24-fb55353
[2019-11-06 19:13:16,040 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2019-11-06 19:13:16,101 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
[2019-11-06 19:13:16,124 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-11-06 19:13:16,124 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-11-06 19:13:16,126 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-11-06 19:13:16,127 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-11-06 19:13:16,127 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-11-06 19:13:16,127 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-11-06 19:13:16,127 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-11-06 19:13:16,128 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-11-06 19:13:16,128 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-11-06 19:13:16,128 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-11-06 19:13:16,129 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-11-06 19:13:16,130 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-11-06 19:13:16,130 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-11-06 19:13:16,130 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-11-06 19:13:16,130 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-11-06 19:13:16,131 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-11-06 19:13:16,131 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-11-06 19:13:16,131 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-11-06 19:13:16,131 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-11-06 19:13:16,131 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-11-06 19:13:16,132 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-11-06 19:13:16,132 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-06 19:13:16,132 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-11-06 19:13:16,132 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-11-06 19:13:16,133 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-11-06 19:13:16,133 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-11-06 19:13:16,133 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-11-06 19:13:16,133 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-11-06 19:13:16,133 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-11-06 19:13:16,415 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-11-06 19:13:16,428 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-11-06 19:13:16,431 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-11-06 19:13:16,433 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-11-06 19:13:16,433 INFO  L275        PluginConnector]: CDTParser initialized
[2019-11-06 19:13:16,434 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label23.c
[2019-11-06 19:13:16,495 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c906c33b9/b4c10e6e6a0e47bf869d569b14191d22/FLAGf6dee9c5d
[2019-11-06 19:13:17,087 INFO  L306              CDTParser]: Found 1 translation units.
[2019-11-06 19:13:17,088 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label23.c
[2019-11-06 19:13:17,103 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c906c33b9/b4c10e6e6a0e47bf869d569b14191d22/FLAGf6dee9c5d
[2019-11-06 19:13:17,334 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c906c33b9/b4c10e6e6a0e47bf869d569b14191d22
[2019-11-06 19:13:17,345 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-11-06 19:13:17,346 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-11-06 19:13:17,348 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-11-06 19:13:17,348 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-11-06 19:13:17,351 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-11-06 19:13:17,352 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:13:17" (1/1) ...
[2019-11-06 19:13:17,356 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c304c45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:13:17, skipping insertion in model container
[2019-11-06 19:13:17,356 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:13:17" (1/1) ...
[2019-11-06 19:13:17,364 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-11-06 19:13:17,422 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-11-06 19:13:18,031 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-06 19:13:18,035 INFO  L188         MainTranslator]: Completed pre-run
[2019-11-06 19:13:18,175 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-06 19:13:18,193 INFO  L192         MainTranslator]: Completed translation
[2019-11-06 19:13:18,194 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:13:18 WrapperNode
[2019-11-06 19:13:18,195 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-11-06 19:13:18,196 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-11-06 19:13:18,196 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-11-06 19:13:18,196 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-11-06 19:13:18,212 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:13:18" (1/1) ...
[2019-11-06 19:13:18,212 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:13:18" (1/1) ...
[2019-11-06 19:13:18,238 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:13:18" (1/1) ...
[2019-11-06 19:13:18,238 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:13:18" (1/1) ...
[2019-11-06 19:13:18,287 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:13:18" (1/1) ...
[2019-11-06 19:13:18,309 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:13:18" (1/1) ...
[2019-11-06 19:13:18,317 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:13:18" (1/1) ...
[2019-11-06 19:13:18,333 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-11-06 19:13:18,333 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-11-06 19:13:18,334 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-11-06 19:13:18,334 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-11-06 19:13:18,336 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:13:18" (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
[2019-11-06 19:13:18,409 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-11-06 19:13:18,409 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-11-06 19:13:18,409 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-11-06 19:13:18,410 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-11-06 19:13:18,410 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-11-06 19:13:18,410 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-11-06 19:13:18,410 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-11-06 19:13:18,410 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-11-06 19:13:18,411 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-11-06 19:13:18,411 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-11-06 19:13:18,411 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-11-06 19:13:19,834 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-11-06 19:13:19,835 INFO  L284             CfgBuilder]: Removed 1 assume(true) statements.
[2019-11-06 19:13:19,836 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:13:19 BoogieIcfgContainer
[2019-11-06 19:13:19,836 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-11-06 19:13:19,838 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-11-06 19:13:19,838 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-11-06 19:13:19,842 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-11-06 19:13:19,842 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:13:17" (1/3) ...
[2019-11-06 19:13:19,843 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@665490a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:13:19, skipping insertion in model container
[2019-11-06 19:13:19,843 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:13:18" (2/3) ...
[2019-11-06 19:13:19,844 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@665490a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:13:19, skipping insertion in model container
[2019-11-06 19:13:19,844 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:13:19" (3/3) ...
[2019-11-06 19:13:19,846 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem14_label23.c
[2019-11-06 19:13:19,858 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-11-06 19:13:19,867 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-11-06 19:13:19,881 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-11-06 19:13:19,910 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-11-06 19:13:19,910 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-11-06 19:13:19,910 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-11-06 19:13:19,911 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-11-06 19:13:19,911 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-11-06 19:13:19,911 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-11-06 19:13:19,911 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-11-06 19:13:19,911 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-11-06 19:13:19,936 INFO  L276                IsEmpty]: Start isEmpty. Operand 254 states.
[2019-11-06 19:13:19,943 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2019-11-06 19:13:19,944 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:13:19,945 INFO  L410         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]
[2019-11-06 19:13:19,947 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:13:19,953 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:13:19,953 INFO  L82        PathProgramCache]: Analyzing trace with hash -1582887541, now seen corresponding path program 1 times
[2019-11-06 19:13:19,963 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:13:19,963 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879617636]
[2019-11-06 19:13:19,964 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:13:20,078 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:20,324 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:20,349 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 19:13:20,350 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879617636]
[2019-11-06 19:13:20,351 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 19:13:20,351 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 19:13:20,353 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571622593]
[2019-11-06 19:13:20,358 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 19:13:20,358 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:13:20,373 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 19:13:20,374 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-11-06 19:13:20,376 INFO  L87              Difference]: Start difference. First operand 254 states. Second operand 5 states.
[2019-11-06 19:13:22,968 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:13:22,968 INFO  L93              Difference]: Finished difference Result 886 states and 1613 transitions.
[2019-11-06 19:13:22,971 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-11-06 19:13:22,972 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 38
[2019-11-06 19:13:22,973 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:13:23,012 INFO  L225             Difference]: With dead ends: 886
[2019-11-06 19:13:23,013 INFO  L226             Difference]: Without dead ends: 564
[2019-11-06 19:13:23,026 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2019-11-06 19:13:23,049 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 564 states.
[2019-11-06 19:13:23,157 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 558.
[2019-11-06 19:13:23,159 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 558 states.
[2019-11-06 19:13:23,163 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 906 transitions.
[2019-11-06 19:13:23,165 INFO  L78                 Accepts]: Start accepts. Automaton has 558 states and 906 transitions. Word has length 38
[2019-11-06 19:13:23,165 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:13:23,165 INFO  L462      AbstractCegarLoop]: Abstraction has 558 states and 906 transitions.
[2019-11-06 19:13:23,165 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 19:13:23,166 INFO  L276                IsEmpty]: Start isEmpty. Operand 558 states and 906 transitions.
[2019-11-06 19:13:23,171 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 113
[2019-11-06 19:13:23,171 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:13:23,173 INFO  L410         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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:13:23,173 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:13:23,173 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:13:23,174 INFO  L82        PathProgramCache]: Analyzing trace with hash 980020742, now seen corresponding path program 1 times
[2019-11-06 19:13:23,174 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:13:23,174 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21202858]
[2019-11-06 19:13:23,174 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:13:23,228 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:23,291 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:23,330 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:23,411 INFO  L134       CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 19:13:23,412 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21202858]
[2019-11-06 19:13:23,412 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 19:13:23,412 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2019-11-06 19:13:23,413 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963729407]
[2019-11-06 19:13:23,416 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-11-06 19:13:23,416 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:13:23,416 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-11-06 19:13:23,417 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2019-11-06 19:13:23,417 INFO  L87              Difference]: Start difference. First operand 558 states and 906 transitions. Second operand 9 states.
[2019-11-06 19:13:25,405 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:13:25,405 INFO  L93              Difference]: Finished difference Result 1320 states and 2174 transitions.
[2019-11-06 19:13:25,406 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2019-11-06 19:13:25,406 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 112
[2019-11-06 19:13:25,407 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:13:25,413 INFO  L225             Difference]: With dead ends: 1320
[2019-11-06 19:13:25,413 INFO  L226             Difference]: Without dead ends: 768
[2019-11-06 19:13:25,416 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182
[2019-11-06 19:13:25,417 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 768 states.
[2019-11-06 19:13:25,440 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 566.
[2019-11-06 19:13:25,441 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 566 states.
[2019-11-06 19:13:25,444 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 819 transitions.
[2019-11-06 19:13:25,444 INFO  L78                 Accepts]: Start accepts. Automaton has 566 states and 819 transitions. Word has length 112
[2019-11-06 19:13:25,445 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:13:25,445 INFO  L462      AbstractCegarLoop]: Abstraction has 566 states and 819 transitions.
[2019-11-06 19:13:25,445 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2019-11-06 19:13:25,445 INFO  L276                IsEmpty]: Start isEmpty. Operand 566 states and 819 transitions.
[2019-11-06 19:13:25,449 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 122
[2019-11-06 19:13:25,450 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:13:25,450 INFO  L410         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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:13:25,450 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:13:25,450 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:13:25,451 INFO  L82        PathProgramCache]: Analyzing trace with hash -111529671, now seen corresponding path program 1 times
[2019-11-06 19:13:25,451 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:13:25,451 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498024753]
[2019-11-06 19:13:25,451 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:13:25,481 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:25,551 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:25,578 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:25,625 INFO  L134       CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 19:13:25,626 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498024753]
[2019-11-06 19:13:25,626 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503836137]
[2019-11-06 19:13:25,626 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
[2019-11-06 19:13:25,726 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:25,728 INFO  L256         TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 11 conjunts are in the unsatisfiable core
[2019-11-06 19:13:25,788 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-11-06 19:13:25,877 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-11-06 19:13:25,936 INFO  L134       CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 19:13:25,937 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-06 19:13:25,937 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9
[2019-11-06 19:13:25,938 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163984312]
[2019-11-06 19:13:25,943 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 19:13:25,943 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:13:25,943 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 19:13:25,944 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72
[2019-11-06 19:13:25,944 INFO  L87              Difference]: Start difference. First operand 566 states and 819 transitions. Second operand 5 states.
[2019-11-06 19:13:27,432 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:13:27,433 INFO  L93              Difference]: Finished difference Result 1338 states and 1927 transitions.
[2019-11-06 19:13:27,434 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2019-11-06 19:13:27,435 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 121
[2019-11-06 19:13:27,435 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:13:27,440 INFO  L225             Difference]: With dead ends: 1338
[2019-11-06 19:13:27,441 INFO  L226             Difference]: Without dead ends: 778
[2019-11-06 19:13:27,442 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132
[2019-11-06 19:13:27,444 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 778 states.
[2019-11-06 19:13:27,483 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 754.
[2019-11-06 19:13:27,483 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 754 states.
[2019-11-06 19:13:27,487 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1023 transitions.
[2019-11-06 19:13:27,488 INFO  L78                 Accepts]: Start accepts. Automaton has 754 states and 1023 transitions. Word has length 121
[2019-11-06 19:13:27,489 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:13:27,490 INFO  L462      AbstractCegarLoop]: Abstraction has 754 states and 1023 transitions.
[2019-11-06 19:13:27,490 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 19:13:27,490 INFO  L276                IsEmpty]: Start isEmpty. Operand 754 states and 1023 transitions.
[2019-11-06 19:13:27,497 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 206
[2019-11-06 19:13:27,497 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:13:27,498 INFO  L410         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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:13:27,701 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:13:27,701 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:13:27,702 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:13:27,702 INFO  L82        PathProgramCache]: Analyzing trace with hash 494910482, now seen corresponding path program 1 times
[2019-11-06 19:13:27,702 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:13:27,702 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244059601]
[2019-11-06 19:13:27,703 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:13:27,734 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:27,836 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:27,875 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:27,951 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:28,450 INFO  L134       CoverageAnalysis]: Checked inductivity of 145 backedges. 68 proven. 76 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-11-06 19:13:28,450 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244059601]
[2019-11-06 19:13:28,451 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243339316]
[2019-11-06 19:13:28,451 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
[2019-11-06 19:13:28,552 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:28,554 INFO  L256         TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 26 conjunts are in the unsatisfiable core
[2019-11-06 19:13:28,560 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-11-06 19:13:28,640 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 4 terms
[2019-11-06 19:13:28,748 INFO  L134       CoverageAnalysis]: Checked inductivity of 145 backedges. 93 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 19:13:28,749 INFO  L218   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-11-06 19:13:28,749 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 16
[2019-11-06 19:13:28,750 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043223194]
[2019-11-06 19:13:28,751 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 16 states
[2019-11-06 19:13:28,751 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:13:28,751 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2019-11-06 19:13:28,752 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240
[2019-11-06 19:13:28,752 INFO  L87              Difference]: Start difference. First operand 754 states and 1023 transitions. Second operand 16 states.
[2019-11-06 19:13:32,742 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:13:32,742 INFO  L93              Difference]: Finished difference Result 1813 states and 2474 transitions.
[2019-11-06 19:13:32,743 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. 
[2019-11-06 19:13:32,743 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states. Word has length 205
[2019-11-06 19:13:32,744 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:13:32,749 INFO  L225             Difference]: With dead ends: 1813
[2019-11-06 19:13:32,749 INFO  L226             Difference]: Without dead ends: 1018
[2019-11-06 19:13:32,752 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=266, Invalid=924, Unknown=0, NotChecked=0, Total=1190
[2019-11-06 19:13:32,754 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1018 states.
[2019-11-06 19:13:32,781 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 942.
[2019-11-06 19:13:32,781 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 942 states.
[2019-11-06 19:13:32,785 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1122 transitions.
[2019-11-06 19:13:32,785 INFO  L78                 Accepts]: Start accepts. Automaton has 942 states and 1122 transitions. Word has length 205
[2019-11-06 19:13:32,785 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:13:32,786 INFO  L462      AbstractCegarLoop]: Abstraction has 942 states and 1122 transitions.
[2019-11-06 19:13:32,786 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 16 states.
[2019-11-06 19:13:32,786 INFO  L276                IsEmpty]: Start isEmpty. Operand 942 states and 1122 transitions.
[2019-11-06 19:13:32,789 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 231
[2019-11-06 19:13:32,789 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:13:32,789 INFO  L410         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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:13:32,992 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:13:32,993 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:13:32,993 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:13:32,994 INFO  L82        PathProgramCache]: Analyzing trace with hash -1312430241, now seen corresponding path program 1 times
[2019-11-06 19:13:32,994 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:13:32,994 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657042425]
[2019-11-06 19:13:32,995 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:13:33,025 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:33,171 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:33,200 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:33,273 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:33,535 INFO  L134       CoverageAnalysis]: Checked inductivity of 145 backedges. 109 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-11-06 19:13:33,535 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657042425]
[2019-11-06 19:13:33,536 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835392151]
[2019-11-06 19:13:33,536 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
[2019-11-06 19:13:33,638 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:33,639 INFO  L256         TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 6 conjunts are in the unsatisfiable core
[2019-11-06 19:13:33,655 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-11-06 19:13:33,706 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 3 terms
[2019-11-06 19:13:33,780 INFO  L134       CoverageAnalysis]: Checked inductivity of 145 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked.
[2019-11-06 19:13:33,780 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-06 19:13:33,781 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14
[2019-11-06 19:13:33,781 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435605726]
[2019-11-06 19:13:33,781 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 19:13:33,782 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:13:33,782 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 19:13:33,782 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182
[2019-11-06 19:13:33,782 INFO  L87              Difference]: Start difference. First operand 942 states and 1122 transitions. Second operand 5 states.
[2019-11-06 19:13:34,904 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:13:34,907 INFO  L93              Difference]: Finished difference Result 2830 states and 3431 transitions.
[2019-11-06 19:13:34,907 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2019-11-06 19:13:34,907 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 230
[2019-11-06 19:13:34,908 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:13:34,918 INFO  L225             Difference]: With dead ends: 2830
[2019-11-06 19:13:34,918 INFO  L226             Difference]: Without dead ends: 1894
[2019-11-06 19:13:34,921 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 235 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272
[2019-11-06 19:13:34,924 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1894 states.
[2019-11-06 19:13:34,974 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1694.
[2019-11-06 19:13:34,974 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1694 states.
[2019-11-06 19:13:34,980 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1694 states to 1694 states and 1996 transitions.
[2019-11-06 19:13:34,981 INFO  L78                 Accepts]: Start accepts. Automaton has 1694 states and 1996 transitions. Word has length 230
[2019-11-06 19:13:34,982 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:13:34,982 INFO  L462      AbstractCegarLoop]: Abstraction has 1694 states and 1996 transitions.
[2019-11-06 19:13:34,982 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 19:13:34,982 INFO  L276                IsEmpty]: Start isEmpty. Operand 1694 states and 1996 transitions.
[2019-11-06 19:13:34,987 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 341
[2019-11-06 19:13:34,987 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:13:34,989 INFO  L410         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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:13:35,197 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:13:35,197 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:13:35,198 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:13:35,198 INFO  L82        PathProgramCache]: Analyzing trace with hash 1880402258, now seen corresponding path program 1 times
[2019-11-06 19:13:35,198 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:13:35,198 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034225879]
[2019-11-06 19:13:35,198 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:13:35,240 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:35,307 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:35,323 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:35,358 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:35,450 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:35,781 INFO  L134       CoverageAnalysis]: Checked inductivity of 368 backedges. 258 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked.
[2019-11-06 19:13:35,781 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034225879]
[2019-11-06 19:13:35,789 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115746275]
[2019-11-06 19:13:35,790 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
[2019-11-06 19:13:35,907 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:35,909 INFO  L256         TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 7 conjunts are in the unsatisfiable core
[2019-11-06 19:13:35,915 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-11-06 19:13:36,052 INFO  L134       CoverageAnalysis]: Checked inductivity of 368 backedges. 260 proven. 2 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked.
[2019-11-06 19:13:36,054 INFO  L218   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-11-06 19:13:36,054 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 9
[2019-11-06 19:13:36,054 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881294907]
[2019-11-06 19:13:36,055 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-11-06 19:13:36,056 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:13:36,056 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-11-06 19:13:36,056 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72
[2019-11-06 19:13:36,056 INFO  L87              Difference]: Start difference. First operand 1694 states and 1996 transitions. Second operand 9 states.
[2019-11-06 19:13:38,517 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:13:38,517 INFO  L93              Difference]: Finished difference Result 4328 states and 5278 transitions.
[2019-11-06 19:13:38,518 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2019-11-06 19:13:38,518 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 340
[2019-11-06 19:13:38,518 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:13:38,530 INFO  L225             Difference]: With dead ends: 4328
[2019-11-06 19:13:38,530 INFO  L226             Difference]: Without dead ends: 2822
[2019-11-06 19:13:38,534 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 351 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210
[2019-11-06 19:13:38,537 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2822 states.
[2019-11-06 19:13:38,590 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2822 to 2450.
[2019-11-06 19:13:38,590 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2450 states.
[2019-11-06 19:13:38,598 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2450 states to 2450 states and 2939 transitions.
[2019-11-06 19:13:38,598 INFO  L78                 Accepts]: Start accepts. Automaton has 2450 states and 2939 transitions. Word has length 340
[2019-11-06 19:13:38,599 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:13:38,599 INFO  L462      AbstractCegarLoop]: Abstraction has 2450 states and 2939 transitions.
[2019-11-06 19:13:38,599 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2019-11-06 19:13:38,599 INFO  L276                IsEmpty]: Start isEmpty. Operand 2450 states and 2939 transitions.
[2019-11-06 19:13:38,607 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 425
[2019-11-06 19:13:38,607 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:13:38,607 INFO  L410         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:13:38,811 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:13:38,812 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:13:38,812 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:13:38,812 INFO  L82        PathProgramCache]: Analyzing trace with hash -324737621, now seen corresponding path program 1 times
[2019-11-06 19:13:38,812 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:13:38,812 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510860859]
[2019-11-06 19:13:38,813 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:13:38,873 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:38,969 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:38,992 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:39,025 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:39,056 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:39,082 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:39,696 INFO  L134       CoverageAnalysis]: Checked inductivity of 650 backedges. 376 proven. 6 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked.
[2019-11-06 19:13:39,696 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510860859]
[2019-11-06 19:13:39,696 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438126604]
[2019-11-06 19:13:39,696 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
[2019-11-06 19:13:39,824 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:39,826 INFO  L256         TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 22 conjunts are in the unsatisfiable core
[2019-11-06 19:13:39,832 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-11-06 19:13:39,868 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 4 terms
[2019-11-06 19:13:40,084 INFO  L134       CoverageAnalysis]: Checked inductivity of 650 backedges. 377 proven. 2 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked.
[2019-11-06 19:13:40,084 INFO  L218   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-11-06 19:13:40,084 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 12
[2019-11-06 19:13:40,085 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171789763]
[2019-11-06 19:13:40,086 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 12 states
[2019-11-06 19:13:40,086 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:13:40,086 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2019-11-06 19:13:40,086 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132
[2019-11-06 19:13:40,086 INFO  L87              Difference]: Start difference. First operand 2450 states and 2939 transitions. Second operand 12 states.
[2019-11-06 19:13:42,351 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:13:42,351 INFO  L93              Difference]: Finished difference Result 5010 states and 6057 transitions.
[2019-11-06 19:13:42,352 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2019-11-06 19:13:42,352 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states. Word has length 424
[2019-11-06 19:13:42,353 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:13:42,365 INFO  L225             Difference]: With dead ends: 5010
[2019-11-06 19:13:42,365 INFO  L226             Difference]: Without dead ends: 2709
[2019-11-06 19:13:42,371 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 441 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380
[2019-11-06 19:13:42,374 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2709 states.
[2019-11-06 19:13:42,425 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2709 to 2448.
[2019-11-06 19:13:42,426 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2448 states.
[2019-11-06 19:13:42,433 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2448 states to 2448 states and 2823 transitions.
[2019-11-06 19:13:42,434 INFO  L78                 Accepts]: Start accepts. Automaton has 2448 states and 2823 transitions. Word has length 424
[2019-11-06 19:13:42,434 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:13:42,434 INFO  L462      AbstractCegarLoop]: Abstraction has 2448 states and 2823 transitions.
[2019-11-06 19:13:42,435 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 12 states.
[2019-11-06 19:13:42,435 INFO  L276                IsEmpty]: Start isEmpty. Operand 2448 states and 2823 transitions.
[2019-11-06 19:13:42,444 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 451
[2019-11-06 19:13:42,445 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:13:42,445 INFO  L410         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:13:42,649 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:13:42,649 INFO  L410      AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:13:42,650 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:13:42,650 INFO  L82        PathProgramCache]: Analyzing trace with hash -424736577, now seen corresponding path program 2 times
[2019-11-06 19:13:42,650 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:13:42,650 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123672672]
[2019-11-06 19:13:42,651 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:13:42,701 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:42,803 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:42,826 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:42,872 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:42,926 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:43,055 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:43,655 INFO  L134       CoverageAnalysis]: Checked inductivity of 701 backedges. 573 proven. 20 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked.
[2019-11-06 19:13:43,655 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123672672]
[2019-11-06 19:13:43,656 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891398015]
[2019-11-06 19:13:43,657 INFO  L92    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
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
[2019-11-06 19:13:43,810 INFO  L249   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2019-11-06 19:13:43,810 INFO  L250   tOrderPrioritization]: Conjunction of SSA is unsat
[2019-11-06 19:13:43,811 INFO  L256         TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 7 conjunts are in the unsatisfiable core
[2019-11-06 19:13:43,830 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-11-06 19:13:43,874 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-11-06 19:13:44,058 INFO  L134       CoverageAnalysis]: Checked inductivity of 701 backedges. 377 proven. 2 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked.
[2019-11-06 19:13:44,058 INFO  L218   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-11-06 19:13:44,058 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5] total 17
[2019-11-06 19:13:44,059 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620665823]
[2019-11-06 19:13:44,060 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 17 states
[2019-11-06 19:13:44,060 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:13:44,060 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2019-11-06 19:13:44,061 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272
[2019-11-06 19:13:44,061 INFO  L87              Difference]: Start difference. First operand 2448 states and 2823 transitions. Second operand 17 states.
[2019-11-06 19:13:49,942 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:13:49,942 INFO  L93              Difference]: Finished difference Result 5508 states and 6555 transitions.
[2019-11-06 19:13:49,943 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. 
[2019-11-06 19:13:49,943 INFO  L78                 Accepts]: Start accepts. Automaton has 17 states. Word has length 450
[2019-11-06 19:13:49,944 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:13:49,959 INFO  L225             Difference]: With dead ends: 5508
[2019-11-06 19:13:49,959 INFO  L226             Difference]: Without dead ends: 3248
[2019-11-06 19:13:49,967 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 491 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=621, Invalid=2685, Unknown=0, NotChecked=0, Total=3306
[2019-11-06 19:13:49,970 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3248 states.
[2019-11-06 19:13:50,033 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3248 to 2646.
[2019-11-06 19:13:50,034 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2646 states.
[2019-11-06 19:13:50,039 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2646 states to 2646 states and 2969 transitions.
[2019-11-06 19:13:50,040 INFO  L78                 Accepts]: Start accepts. Automaton has 2646 states and 2969 transitions. Word has length 450
[2019-11-06 19:13:50,041 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:13:50,041 INFO  L462      AbstractCegarLoop]: Abstraction has 2646 states and 2969 transitions.
[2019-11-06 19:13:50,041 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 17 states.
[2019-11-06 19:13:50,041 INFO  L276                IsEmpty]: Start isEmpty. Operand 2646 states and 2969 transitions.
[2019-11-06 19:13:50,046 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 514
[2019-11-06 19:13:50,046 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:13:50,047 INFO  L410         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:13:50,254 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:13:50,254 INFO  L410      AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:13:50,255 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:13:50,255 INFO  L82        PathProgramCache]: Analyzing trace with hash 1199640678, now seen corresponding path program 1 times
[2019-11-06 19:13:50,255 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:13:50,255 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219658561]
[2019-11-06 19:13:50,256 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:13:50,318 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:50,430 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:50,454 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:50,495 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:50,574 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:50,831 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:51,498 INFO  L134       CoverageAnalysis]: Checked inductivity of 701 backedges. 573 proven. 20 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked.
[2019-11-06 19:13:51,498 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219658561]
[2019-11-06 19:13:51,498 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420714959]
[2019-11-06 19:13:51,499 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:13:51,660 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:13:51,662 INFO  L256         TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 7 conjunts are in the unsatisfiable core
[2019-11-06 19:13:51,669 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-11-06 19:13:51,723 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-11-06 19:13:52,040 INFO  L134       CoverageAnalysis]: Checked inductivity of 701 backedges. 377 proven. 2 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked.
[2019-11-06 19:13:52,040 INFO  L218   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-11-06 19:13:52,041 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5] total 17
[2019-11-06 19:13:52,041 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008367562]
[2019-11-06 19:13:52,043 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 17 states
[2019-11-06 19:13:52,043 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:13:52,043 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2019-11-06 19:13:52,043 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272
[2019-11-06 19:13:52,044 INFO  L87              Difference]: Start difference. First operand 2646 states and 2969 transitions. Second operand 17 states.