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_label51.c


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This is Ultimate 0.1.24-f4eb214f-m
[2019-10-13 18:03:30,706 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-10-13 18:03:30,709 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
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[2019-10-13 18:03:30,742 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
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[2019-10-13 18:03:30,771 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 18:03:30,791 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-13 18:03:30,791 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-13 18:03:30,792 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-13 18:03:30,792 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-13 18:03:30,793 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-13 18:03:30,793 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-13 18:03:30,793 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-13 18:03:30,793 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-13 18:03:30,793 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-13 18:03:30,794 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-13 18:03:30,794 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-13 18:03:30,794 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-13 18:03:30,794 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-13 18:03:30,794 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-13 18:03:30,795 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-13 18:03:30,795 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-13 18:03:30,795 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-13 18:03:30,795 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-13 18:03:30,795 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-13 18:03:30,796 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-13 18:03:30,796 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-13 18:03:30,796 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-13 18:03:30,796 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-13 18:03:30,797 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-13 18:03:30,797 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-13 18:03:30,797 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-13 18:03:30,797 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-13 18:03:30,797 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-13 18:03:30,798 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-10-13 18:03:31,136 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-13 18:03:31,156 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-13 18:03:31,160 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-13 18:03:31,162 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-13 18:03:31,162 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-13 18:03:31,163 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label51.c
[2019-10-13 18:03:31,242 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca6e73924/c2bdb81c1b2a407d9dba99df51fa9a7f/FLAGfb5b22137
[2019-10-13 18:03:31,852 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-13 18:03:31,852 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label51.c
[2019-10-13 18:03:31,865 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca6e73924/c2bdb81c1b2a407d9dba99df51fa9a7f/FLAGfb5b22137
[2019-10-13 18:03:32,097 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca6e73924/c2bdb81c1b2a407d9dba99df51fa9a7f
[2019-10-13 18:03:32,108 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-13 18:03:32,110 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-13 18:03:32,111 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-13 18:03:32,112 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-13 18:03:32,115 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-13 18:03:32,116 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:03:32" (1/1) ...
[2019-10-13 18:03:32,120 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c8a10c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:32, skipping insertion in model container
[2019-10-13 18:03:32,120 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:03:32" (1/1) ...
[2019-10-13 18:03:32,128 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-13 18:03:32,188 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-13 18:03:32,806 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 18:03:32,812 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-13 18:03:32,950 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 18:03:32,972 INFO  L192         MainTranslator]: Completed translation
[2019-10-13 18:03:32,973 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:32 WrapperNode
[2019-10-13 18:03:32,973 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-13 18:03:32,974 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-13 18:03:32,974 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-13 18:03:32,975 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-13 18:03:32,990 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:32" (1/1) ...
[2019-10-13 18:03:32,990 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:32" (1/1) ...
[2019-10-13 18:03:33,025 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:32" (1/1) ...
[2019-10-13 18:03:33,028 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:32" (1/1) ...
[2019-10-13 18:03:33,070 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:32" (1/1) ...
[2019-10-13 18:03:33,096 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:32" (1/1) ...
[2019-10-13 18:03:33,116 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:32" (1/1) ...
[2019-10-13 18:03:33,137 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-13 18:03:33,138 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-13 18:03:33,138 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-13 18:03:33,138 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-13 18:03:33,139 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:32" (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 18:03:33,212 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-13 18:03:33,212 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-13 18:03:33,212 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-10-13 18:03:33,213 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-13 18:03:33,213 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-10-13 18:03:33,214 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-13 18:03:33,214 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-13 18:03:33,214 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-10-13 18:03:33,214 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-13 18:03:33,215 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-13 18:03:33,215 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-13 18:03:34,672 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-13 18:03:34,673 INFO  L284             CfgBuilder]: Removed 1 assume(true) statements.
[2019-10-13 18:03:34,674 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:03:34 BoogieIcfgContainer
[2019-10-13 18:03:34,674 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-13 18:03:34,675 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-13 18:03:34,676 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-13 18:03:34,679 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-13 18:03:34,679 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:03:32" (1/3) ...
[2019-10-13 18:03:34,680 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@211cc068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:03:34, skipping insertion in model container
[2019-10-13 18:03:34,680 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:03:32" (2/3) ...
[2019-10-13 18:03:34,681 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@211cc068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:03:34, skipping insertion in model container
[2019-10-13 18:03:34,681 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:03:34" (3/3) ...
[2019-10-13 18:03:34,685 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem14_label51.c
[2019-10-13 18:03:34,696 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-13 18:03:34,705 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-13 18:03:34,717 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-13 18:03:34,745 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-13 18:03:34,746 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-13 18:03:34,746 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-13 18:03:34,746 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-13 18:03:34,746 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-13 18:03:34,746 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-13 18:03:34,746 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-13 18:03:34,747 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-13 18:03:34,771 INFO  L276                IsEmpty]: Start isEmpty. Operand 254 states.
[2019-10-13 18:03:34,779 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2019-10-13 18:03:34,779 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:03:34,780 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]
[2019-10-13 18:03:34,782 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:03:34,787 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:03:34,787 INFO  L82        PathProgramCache]: Analyzing trace with hash -1352567654, now seen corresponding path program 1 times
[2019-10-13 18:03:34,794 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:03:34,794 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299144978]
[2019-10-13 18:03:34,794 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:03:34,795 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:03:34,795 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:03:34,907 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:35,119 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:35,156 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 18:03:35,157 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299144978]
[2019-10-13 18:03:35,158 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 18:03:35,159 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-13 18:03:35,159 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084801423]
[2019-10-13 18:03:35,165 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 18:03:35,166 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:03:35,181 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 18:03:35,182 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-10-13 18:03:35,185 INFO  L87              Difference]: Start difference. First operand 254 states. Second operand 5 states.
[2019-10-13 18:03:37,883 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:03:37,883 INFO  L93              Difference]: Finished difference Result 886 states and 1612 transitions.
[2019-10-13 18:03:37,884 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-13 18:03:37,885 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 41
[2019-10-13 18:03:37,886 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:03:37,912 INFO  L225             Difference]: With dead ends: 886
[2019-10-13 18:03:37,912 INFO  L226             Difference]: Without dead ends: 564
[2019-10-13 18:03:37,925 INFO  L600         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
[2019-10-13 18:03:37,952 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 564 states.
[2019-10-13 18:03:38,042 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 560.
[2019-10-13 18:03:38,044 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 560 states.
[2019-10-13 18:03:38,048 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 861 transitions.
[2019-10-13 18:03:38,049 INFO  L78                 Accepts]: Start accepts. Automaton has 560 states and 861 transitions. Word has length 41
[2019-10-13 18:03:38,050 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:03:38,050 INFO  L462      AbstractCegarLoop]: Abstraction has 560 states and 861 transitions.
[2019-10-13 18:03:38,050 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 18:03:38,051 INFO  L276                IsEmpty]: Start isEmpty. Operand 560 states and 861 transitions.
[2019-10-13 18:03:38,057 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 136
[2019-10-13 18:03:38,058 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:03:38,058 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:03:38,058 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:03:38,059 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:03:38,059 INFO  L82        PathProgramCache]: Analyzing trace with hash 430859462, now seen corresponding path program 1 times
[2019-10-13 18:03:38,059 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:03:38,059 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431953320]
[2019-10-13 18:03:38,060 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:03:38,060 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:03:38,060 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:03:38,107 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:38,198 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:38,247 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:38,385 INFO  L134       CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 18:03:38,386 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431953320]
[2019-10-13 18:03:38,386 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 18:03:38,386 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2019-10-13 18:03:38,386 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241913789]
[2019-10-13 18:03:38,389 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 8 states
[2019-10-13 18:03:38,389 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:03:38,390 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2019-10-13 18:03:38,390 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2019-10-13 18:03:38,390 INFO  L87              Difference]: Start difference. First operand 560 states and 861 transitions. Second operand 8 states.
[2019-10-13 18:03:41,798 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:03:41,799 INFO  L93              Difference]: Finished difference Result 2118 states and 3534 transitions.
[2019-10-13 18:03:41,799 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2019-10-13 18:03:41,800 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 135
[2019-10-13 18:03:41,801 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:03:41,819 INFO  L225             Difference]: With dead ends: 2118
[2019-10-13 18:03:41,820 INFO  L226             Difference]: Without dead ends: 1564
[2019-10-13 18:03:41,825 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182
[2019-10-13 18:03:41,828 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1564 states.
[2019-10-13 18:03:41,942 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1564 to 1520.
[2019-10-13 18:03:41,943 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1520 states.
[2019-10-13 18:03:41,955 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 2204 transitions.
[2019-10-13 18:03:41,956 INFO  L78                 Accepts]: Start accepts. Automaton has 1520 states and 2204 transitions. Word has length 135
[2019-10-13 18:03:41,959 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:03:41,959 INFO  L462      AbstractCegarLoop]: Abstraction has 1520 states and 2204 transitions.
[2019-10-13 18:03:41,959 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2019-10-13 18:03:41,960 INFO  L276                IsEmpty]: Start isEmpty. Operand 1520 states and 2204 transitions.
[2019-10-13 18:03:42,018 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 182
[2019-10-13 18:03:42,018 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:03:42,019 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:03:42,019 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:03:42,020 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:03:42,020 INFO  L82        PathProgramCache]: Analyzing trace with hash 1520330050, now seen corresponding path program 1 times
[2019-10-13 18:03:42,020 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:03:42,020 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669525493]
[2019-10-13 18:03:42,021 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:03:42,021 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:03:42,021 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:03:42,089 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:42,168 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:42,235 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:42,522 INFO  L134       CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 18:03:42,522 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669525493]
[2019-10-13 18:03:42,523 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 18:03:42,523 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2019-10-13 18:03:42,523 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194269121]
[2019-10-13 18:03:42,526 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-10-13 18:03:42,526 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:03:42,527 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-10-13 18:03:42,528 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2019-10-13 18:03:42,531 INFO  L87              Difference]: Start difference. First operand 1520 states and 2204 transitions. Second operand 9 states.
[2019-10-13 18:03:44,469 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:03:44,469 INFO  L93              Difference]: Finished difference Result 3106 states and 4911 transitions.
[2019-10-13 18:03:44,470 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2019-10-13 18:03:44,470 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 181
[2019-10-13 18:03:44,471 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:03:44,483 INFO  L225             Difference]: With dead ends: 3106
[2019-10-13 18:03:44,483 INFO  L226             Difference]: Without dead ends: 1592
[2019-10-13 18:03:44,489 INFO  L600         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
[2019-10-13 18:03:44,492 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1592 states.
[2019-10-13 18:03:44,555 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 1520.
[2019-10-13 18:03:44,556 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1520 states.
[2019-10-13 18:03:44,562 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 2124 transitions.
[2019-10-13 18:03:44,562 INFO  L78                 Accepts]: Start accepts. Automaton has 1520 states and 2124 transitions. Word has length 181
[2019-10-13 18:03:44,563 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:03:44,563 INFO  L462      AbstractCegarLoop]: Abstraction has 1520 states and 2124 transitions.
[2019-10-13 18:03:44,563 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2019-10-13 18:03:44,563 INFO  L276                IsEmpty]: Start isEmpty. Operand 1520 states and 2124 transitions.
[2019-10-13 18:03:44,566 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 201
[2019-10-13 18:03:44,566 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:03:44,567 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, 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]
[2019-10-13 18:03:44,567 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:03:44,567 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:03:44,567 INFO  L82        PathProgramCache]: Analyzing trace with hash -906348779, now seen corresponding path program 1 times
[2019-10-13 18:03:44,568 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:03:44,568 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391845886]
[2019-10-13 18:03:44,568 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:03:44,568 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:03:44,569 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:03:44,599 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:44,672 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:44,698 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:44,740 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:44,886 INFO  L134       CoverageAnalysis]: Checked inductivity of 144 backedges. 141 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-10-13 18:03:44,886 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391845886]
[2019-10-13 18:03:44,887 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140692707]
[2019-10-13 18:03:44,887 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 18:03:44,988 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:44,992 INFO  L256         TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-13 18:03:45,004 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 18:03:45,107 INFO  L134       CoverageAnalysis]: Checked inductivity of 144 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 18:03:45,108 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-13 18:03:45,108 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11
[2019-10-13 18:03:45,108 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122158185]
[2019-10-13 18:03:45,109 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 11 states
[2019-10-13 18:03:45,110 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:03:45,110 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2019-10-13 18:03:45,110 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110
[2019-10-13 18:03:45,111 INFO  L87              Difference]: Start difference. First operand 1520 states and 2124 transitions. Second operand 11 states.
[2019-10-13 18:03:51,144 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:03:51,144 INFO  L93              Difference]: Finished difference Result 5468 states and 8833 transitions.
[2019-10-13 18:03:51,145 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. 
[2019-10-13 18:03:51,145 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 200
[2019-10-13 18:03:51,146 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:03:51,176 INFO  L225             Difference]: With dead ends: 5468
[2019-10-13 18:03:51,176 INFO  L226             Difference]: Without dead ends: 3176
[2019-10-13 18:03:51,187 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 221 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=343, Invalid=1379, Unknown=0, NotChecked=0, Total=1722
[2019-10-13 18:03:51,191 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3176 states.
[2019-10-13 18:03:51,315 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3176 to 2924.
[2019-10-13 18:03:51,315 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2924 states.
[2019-10-13 18:03:51,333 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 4335 transitions.
[2019-10-13 18:03:51,333 INFO  L78                 Accepts]: Start accepts. Automaton has 2924 states and 4335 transitions. Word has length 200
[2019-10-13 18:03:51,334 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:03:51,334 INFO  L462      AbstractCegarLoop]: Abstraction has 2924 states and 4335 transitions.
[2019-10-13 18:03:51,334 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2019-10-13 18:03:51,334 INFO  L276                IsEmpty]: Start isEmpty. Operand 2924 states and 4335 transitions.
[2019-10-13 18:03:51,340 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 253
[2019-10-13 18:03:51,340 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:03:51,341 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, 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, 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]
[2019-10-13 18:03:51,547 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 18:03:51,547 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:03:51,548 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:03:51,548 INFO  L82        PathProgramCache]: Analyzing trace with hash 311736925, now seen corresponding path program 1 times
[2019-10-13 18:03:51,548 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:03:51,549 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201795800]
[2019-10-13 18:03:51,549 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:03:51,549 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:03:51,549 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:03:51,609 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:51,704 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:51,729 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:51,775 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:52,102 INFO  L134       CoverageAnalysis]: Checked inductivity of 167 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-10-13 18:03:52,102 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201795800]
[2019-10-13 18:03:52,103 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15719992]
[2019-10-13 18:03:52,103 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 18:03:52,198 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:52,200 INFO  L256         TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-13 18:03:52,207 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 18:03:52,277 INFO  L134       CoverageAnalysis]: Checked inductivity of 167 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked.
[2019-10-13 18:03:52,277 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-13 18:03:52,278 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 14
[2019-10-13 18:03:52,278 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576627457]
[2019-10-13 18:03:52,279 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-13 18:03:52,279 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:03:52,279 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-13 18:03:52,279 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182
[2019-10-13 18:03:52,280 INFO  L87              Difference]: Start difference. First operand 2924 states and 4335 transitions. Second operand 3 states.
[2019-10-13 18:03:53,032 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:03:53,033 INFO  L93              Difference]: Finished difference Result 6800 states and 10134 transitions.
[2019-10-13 18:03:53,033 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-10-13 18:03:53,033 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 252
[2019-10-13 18:03:53,034 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:03:53,058 INFO  L225             Difference]: With dead ends: 6800
[2019-10-13 18:03:53,058 INFO  L226             Difference]: Without dead ends: 3882
[2019-10-13 18:03:53,072 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 255 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182
[2019-10-13 18:03:53,077 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3882 states.
[2019-10-13 18:03:53,174 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3882 to 3110.
[2019-10-13 18:03:53,174 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3110 states.
[2019-10-13 18:03:53,185 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3110 states to 3110 states and 4437 transitions.
[2019-10-13 18:03:53,185 INFO  L78                 Accepts]: Start accepts. Automaton has 3110 states and 4437 transitions. Word has length 252
[2019-10-13 18:03:53,186 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:03:53,186 INFO  L462      AbstractCegarLoop]: Abstraction has 3110 states and 4437 transitions.
[2019-10-13 18:03:53,186 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-13 18:03:53,187 INFO  L276                IsEmpty]: Start isEmpty. Operand 3110 states and 4437 transitions.
[2019-10-13 18:03:53,193 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 259
[2019-10-13 18:03:53,193 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:03:53,194 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, 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, 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]
[2019-10-13 18:03:53,398 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 18:03:53,399 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:03:53,399 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:03:53,399 INFO  L82        PathProgramCache]: Analyzing trace with hash 657294153, now seen corresponding path program 1 times
[2019-10-13 18:03:53,400 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:03:53,400 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679228734]
[2019-10-13 18:03:53,400 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:03:53,400 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:03:53,400 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:03:53,494 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:53,585 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:53,617 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:53,672 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:53,764 INFO  L134       CoverageAnalysis]: Checked inductivity of 173 backedges. 138 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-10-13 18:03:53,765 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679228734]
[2019-10-13 18:03:53,765 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124129098]
[2019-10-13 18:03:53,765 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 18:03:53,870 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:53,872 INFO  L256         TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 11 conjunts are in the unsatisfiable core
[2019-10-13 18:03:53,878 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 18:03:53,923 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-10-13 18:03:54,008 INFO  L134       CoverageAnalysis]: Checked inductivity of 173 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked.
[2019-10-13 18:03:54,009 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-13 18:03:54,009 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12
[2019-10-13 18:03:54,009 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993936199]
[2019-10-13 18:03:54,009 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 18:03:54,010 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:03:54,010 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 18:03:54,010 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132
[2019-10-13 18:03:54,010 INFO  L87              Difference]: Start difference. First operand 3110 states and 4437 transitions. Second operand 5 states.
[2019-10-13 18:03:57,098 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:03:57,099 INFO  L93              Difference]: Finished difference Result 6508 states and 8774 transitions.
[2019-10-13 18:03:57,099 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2019-10-13 18:03:57,099 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 258
[2019-10-13 18:03:57,100 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:03:57,117 INFO  L225             Difference]: With dead ends: 6508
[2019-10-13 18:03:57,117 INFO  L226             Difference]: Without dead ends: 3218
[2019-10-13 18:03:57,132 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210
[2019-10-13 18:03:57,137 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3218 states.
[2019-10-13 18:03:57,220 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3218 to 3204.
[2019-10-13 18:03:57,220 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3204 states.
[2019-10-13 18:03:57,227 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3204 states to 3204 states and 4063 transitions.
[2019-10-13 18:03:57,228 INFO  L78                 Accepts]: Start accepts. Automaton has 3204 states and 4063 transitions. Word has length 258
[2019-10-13 18:03:57,228 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:03:57,229 INFO  L462      AbstractCegarLoop]: Abstraction has 3204 states and 4063 transitions.
[2019-10-13 18:03:57,229 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 18:03:57,229 INFO  L276                IsEmpty]: Start isEmpty. Operand 3204 states and 4063 transitions.
[2019-10-13 18:03:57,237 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 343
[2019-10-13 18:03:57,237 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:03:57,238 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, 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]
[2019-10-13 18:03:57,450 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 18:03:57,451 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:03:57,451 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:03:57,452 INFO  L82        PathProgramCache]: Analyzing trace with hash -1425495407, now seen corresponding path program 1 times
[2019-10-13 18:03:57,452 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:03:57,453 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442186245]
[2019-10-13 18:03:57,453 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:03:57,453 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:03:57,454 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:03:57,503 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:57,594 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:57,628 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:57,696 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:58,117 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:58,598 INFO  L134       CoverageAnalysis]: Checked inductivity of 375 backedges. 112 proven. 256 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2019-10-13 18:03:58,599 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442186245]
[2019-10-13 18:03:58,599 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250689432]
[2019-10-13 18:03:58,599 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 18:03:58,705 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:03:58,707 INFO  L256         TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 26 conjunts are in the unsatisfiable core
[2019-10-13 18:03:58,712 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 18:03:58,778 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 4 terms
[2019-10-13 18:03:59,005 INFO  L134       CoverageAnalysis]: Checked inductivity of 375 backedges. 287 proven. 53 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked.
[2019-10-13 18:03:59,005 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-13 18:03:59,005 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 16
[2019-10-13 18:03:59,006 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918555953]
[2019-10-13 18:03:59,007 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 16 states
[2019-10-13 18:03:59,007 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:03:59,007 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2019-10-13 18:03:59,007 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240
[2019-10-13 18:03:59,008 INFO  L87              Difference]: Start difference. First operand 3204 states and 4063 transitions. Second operand 16 states.
[2019-10-13 18:04:02,825 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:04:02,825 INFO  L93              Difference]: Finished difference Result 6311 states and 8084 transitions.
[2019-10-13 18:04:02,825 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. 
[2019-10-13 18:04:02,825 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states. Word has length 342
[2019-10-13 18:04:02,826 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:04:02,841 INFO  L225             Difference]: With dead ends: 6311
[2019-10-13 18:04:02,841 INFO  L226             Difference]: Without dead ends: 3426
[2019-10-13 18:04:02,848 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=254, Invalid=868, Unknown=0, NotChecked=0, Total=1122
[2019-10-13 18:04:02,851 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3426 states.
[2019-10-13 18:04:02,917 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3426 to 3382.
[2019-10-13 18:04:02,918 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3382 states.
[2019-10-13 18:04:02,923 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3382 states to 3382 states and 3969 transitions.
[2019-10-13 18:04:02,923 INFO  L78                 Accepts]: Start accepts. Automaton has 3382 states and 3969 transitions. Word has length 342
[2019-10-13 18:04:02,923 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:04:02,923 INFO  L462      AbstractCegarLoop]: Abstraction has 3382 states and 3969 transitions.
[2019-10-13 18:04:02,924 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 16 states.
[2019-10-13 18:04:02,924 INFO  L276                IsEmpty]: Start isEmpty. Operand 3382 states and 3969 transitions.
[2019-10-13 18:04:02,938 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 551
[2019-10-13 18:04:02,938 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:04:02,938 INFO  L380         BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 18:04:03,143 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 18:04:03,143 INFO  L410      AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:04:03,143 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:04:03,144 INFO  L82        PathProgramCache]: Analyzing trace with hash 1281134373, now seen corresponding path program 1 times
[2019-10-13 18:04:03,144 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:04:03,144 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095093855]
[2019-10-13 18:04:03,144 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:04:03,144 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:04:03,145 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:04:03,217 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:04:03,319 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:04:03,347 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:04:03,391 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:04:03,433 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:04:03,470 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:04:04,057 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:04:05,009 INFO  L134       CoverageAnalysis]: Checked inductivity of 1105 backedges. 477 proven. 112 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked.
[2019-10-13 18:04:05,010 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095093855]
[2019-10-13 18:04:05,010 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841117808]
[2019-10-13 18:04:05,010 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 18:04:05,169 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:04:05,171 INFO  L256         TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 7 conjunts are in the unsatisfiable core
[2019-10-13 18:04:05,178 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 18:04:05,409 INFO  L134       CoverageAnalysis]: Checked inductivity of 1105 backedges. 822 proven. 2 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked.
[2019-10-13 18:04:05,410 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-13 18:04:05,410 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5] total 17
[2019-10-13 18:04:05,410 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421768243]
[2019-10-13 18:04:05,411 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 17 states
[2019-10-13 18:04:05,411 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:04:05,412 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2019-10-13 18:04:05,412 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272
[2019-10-13 18:04:05,412 INFO  L87              Difference]: Start difference. First operand 3382 states and 3969 transitions. Second operand 17 states.