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/Problem16_label35.c


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This is Ultimate 0.1.24-f4eb214f-m
[2019-10-13 18:05:33,167 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-10-13 18:05:33,170 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
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[2019-10-13 18:05:33,240 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 18:05:33,261 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-13 18:05:33,261 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-13 18:05:33,263 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-13 18:05:33,263 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-13 18:05:33,263 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-13 18:05:33,264 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-13 18:05:33,264 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-13 18:05:33,264 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-13 18:05:33,264 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-13 18:05:33,265 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-13 18:05:33,266 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-13 18:05:33,266 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-13 18:05:33,266 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-13 18:05:33,267 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-13 18:05:33,267 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-13 18:05:33,267 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-13 18:05:33,267 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-13 18:05:33,268 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-13 18:05:33,268 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-13 18:05:33,268 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-13 18:05:33,268 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-13 18:05:33,269 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-13 18:05:33,269 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-13 18:05:33,269 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-13 18:05:33,269 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-13 18:05:33,269 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-13 18:05:33,270 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-13 18:05:33,270 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-13 18:05:33,270 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-10-13 18:05:33,540 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-13 18:05:33,555 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-13 18:05:33,560 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-13 18:05:33,561 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-13 18:05:33,561 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-13 18:05:33,563 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label35.c
[2019-10-13 18:05:33,641 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a6c065d8/876ec139fdad43a0a799a6bcbb76d06e/FLAG2a587bb60
[2019-10-13 18:05:34,351 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-13 18:05:34,351 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label35.c
[2019-10-13 18:05:34,384 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a6c065d8/876ec139fdad43a0a799a6bcbb76d06e/FLAG2a587bb60
[2019-10-13 18:05:34,531 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a6c065d8/876ec139fdad43a0a799a6bcbb76d06e
[2019-10-13 18:05:34,544 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-13 18:05:34,546 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-13 18:05:34,547 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-13 18:05:34,547 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-13 18:05:34,550 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-13 18:05:34,551 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:05:34" (1/1) ...
[2019-10-13 18:05:34,554 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bfc0887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:05:34, skipping insertion in model container
[2019-10-13 18:05:34,555 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:05:34" (1/1) ...
[2019-10-13 18:05:34,562 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-13 18:05:34,652 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-13 18:05:35,570 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 18:05:35,588 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-13 18:05:36,088 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 18:05:36,110 INFO  L192         MainTranslator]: Completed translation
[2019-10-13 18:05:36,111 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:05:36 WrapperNode
[2019-10-13 18:05:36,111 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-13 18:05:36,112 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-13 18:05:36,113 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-13 18:05:36,113 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-13 18:05:36,127 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:05:36" (1/1) ...
[2019-10-13 18:05:36,128 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:05:36" (1/1) ...
[2019-10-13 18:05:36,170 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:05:36" (1/1) ...
[2019-10-13 18:05:36,170 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:05:36" (1/1) ...
[2019-10-13 18:05:36,247 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:05:36" (1/1) ...
[2019-10-13 18:05:36,262 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:05:36" (1/1) ...
[2019-10-13 18:05:36,282 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:05:36" (1/1) ...
[2019-10-13 18:05:36,300 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-13 18:05:36,301 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-13 18:05:36,301 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-13 18:05:36,301 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-13 18:05:36,303 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:05:36" (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 18:05:36,371 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-13 18:05:36,371 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-13 18:05:36,371 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-10-13 18:05:36,372 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2019-10-13 18:05:36,372 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-13 18:05:36,372 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-10-13 18:05:36,372 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2019-10-13 18:05:36,372 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-13 18:05:36,373 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-13 18:05:36,373 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-10-13 18:05:36,373 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-13 18:05:36,373 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-13 18:05:36,373 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-13 18:05:38,912 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-13 18:05:38,912 INFO  L284             CfgBuilder]: Removed 1 assume(true) statements.
[2019-10-13 18:05:38,914 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:05:38 BoogieIcfgContainer
[2019-10-13 18:05:38,914 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-13 18:05:38,916 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-13 18:05:38,916 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-13 18:05:38,919 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-13 18:05:38,920 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:05:34" (1/3) ...
[2019-10-13 18:05:38,920 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3043a50f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:05:38, skipping insertion in model container
[2019-10-13 18:05:38,920 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:05:36" (2/3) ...
[2019-10-13 18:05:38,921 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3043a50f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:05:38, skipping insertion in model container
[2019-10-13 18:05:38,921 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:05:38" (3/3) ...
[2019-10-13 18:05:38,927 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem16_label35.c
[2019-10-13 18:05:38,937 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-13 18:05:38,951 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-13 18:05:38,964 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-13 18:05:39,010 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-13 18:05:39,010 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-13 18:05:39,010 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-13 18:05:39,010 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-13 18:05:39,010 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-13 18:05:39,010 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-13 18:05:39,011 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-13 18:05:39,011 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-13 18:05:39,050 INFO  L276                IsEmpty]: Start isEmpty. Operand 409 states.
[2019-10-13 18:05:39,060 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2019-10-13 18:05:39,060 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:05:39,061 INFO  L380         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 18:05:39,063 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:05:39,068 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:05:39,069 INFO  L82        PathProgramCache]: Analyzing trace with hash 338381554, now seen corresponding path program 1 times
[2019-10-13 18:05:39,079 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:05:39,079 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572296360]
[2019-10-13 18:05:39,079 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:05:39,080 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:05:39,080 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:05:39,271 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:39,560 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:39,595 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 18:05:39,595 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572296360]
[2019-10-13 18:05:39,596 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 18:05:39,597 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-13 18:05:39,597 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867203059]
[2019-10-13 18:05:39,603 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 18:05:39,604 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:05:39,622 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 18:05:39,623 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-10-13 18:05:39,626 INFO  L87              Difference]: Start difference. First operand 409 states. Second operand 5 states.
[2019-10-13 18:05:44,247 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:05:44,247 INFO  L93              Difference]: Finished difference Result 1530 states and 2865 transitions.
[2019-10-13 18:05:44,248 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-13 18:05:44,250 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 47
[2019-10-13 18:05:44,250 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:05:44,276 INFO  L225             Difference]: With dead ends: 1530
[2019-10-13 18:05:44,276 INFO  L226             Difference]: Without dead ends: 1038
[2019-10-13 18:05:44,288 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2019-10-13 18:05:44,309 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1038 states.
[2019-10-13 18:05:44,408 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1031.
[2019-10-13 18:05:44,414 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1031 states.
[2019-10-13 18:05:44,423 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1787 transitions.
[2019-10-13 18:05:44,425 INFO  L78                 Accepts]: Start accepts. Automaton has 1031 states and 1787 transitions. Word has length 47
[2019-10-13 18:05:44,426 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:05:44,427 INFO  L462      AbstractCegarLoop]: Abstraction has 1031 states and 1787 transitions.
[2019-10-13 18:05:44,427 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 18:05:44,427 INFO  L276                IsEmpty]: Start isEmpty. Operand 1031 states and 1787 transitions.
[2019-10-13 18:05:44,439 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 117
[2019-10-13 18:05:44,439 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:05:44,439 INFO  L380         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:05:44,440 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:05:44,440 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:05:44,441 INFO  L82        PathProgramCache]: Analyzing trace with hash -8457825, now seen corresponding path program 1 times
[2019-10-13 18:05:44,441 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:05:44,441 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387394109]
[2019-10-13 18:05:44,442 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:05:44,442 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:05:44,442 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:05:44,523 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:44,646 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:44,685 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:44,793 INFO  L134       CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 18:05:44,793 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387394109]
[2019-10-13 18:05:44,794 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 18:05:44,794 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2019-10-13 18:05:44,794 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440162988]
[2019-10-13 18:05:44,799 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 8 states
[2019-10-13 18:05:44,800 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:05:44,800 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2019-10-13 18:05:44,801 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2019-10-13 18:05:44,801 INFO  L87              Difference]: Start difference. First operand 1031 states and 1787 transitions. Second operand 8 states.
[2019-10-13 18:05:49,810 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:05:49,811 INFO  L93              Difference]: Finished difference Result 3125 states and 5529 transitions.
[2019-10-13 18:05:49,811 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2019-10-13 18:05:49,811 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 116
[2019-10-13 18:05:49,812 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:05:49,833 INFO  L225             Difference]: With dead ends: 3125
[2019-10-13 18:05:49,833 INFO  L226             Difference]: Without dead ends: 2100
[2019-10-13 18:05:49,838 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156
[2019-10-13 18:05:49,841 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2100 states.
[2019-10-13 18:05:49,928 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 1384.
[2019-10-13 18:05:49,929 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1384 states.
[2019-10-13 18:05:49,936 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 2288 transitions.
[2019-10-13 18:05:49,936 INFO  L78                 Accepts]: Start accepts. Automaton has 1384 states and 2288 transitions. Word has length 116
[2019-10-13 18:05:49,938 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:05:49,938 INFO  L462      AbstractCegarLoop]: Abstraction has 1384 states and 2288 transitions.
[2019-10-13 18:05:49,938 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2019-10-13 18:05:49,939 INFO  L276                IsEmpty]: Start isEmpty. Operand 1384 states and 2288 transitions.
[2019-10-13 18:05:49,948 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 120
[2019-10-13 18:05:49,949 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:05:49,949 INFO  L380         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:05:49,949 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:05:49,950 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:05:49,951 INFO  L82        PathProgramCache]: Analyzing trace with hash -1750756938, now seen corresponding path program 1 times
[2019-10-13 18:05:49,951 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:05:49,951 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845505912]
[2019-10-13 18:05:49,951 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:05:49,952 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:05:49,952 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:05:50,010 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:50,098 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:50,144 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:50,278 INFO  L134       CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 18:05:50,278 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845505912]
[2019-10-13 18:05:50,278 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 18:05:50,279 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2019-10-13 18:05:50,279 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746122295]
[2019-10-13 18:05:50,279 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-10-13 18:05:50,280 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:05:50,280 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-10-13 18:05:50,280 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2019-10-13 18:05:50,280 INFO  L87              Difference]: Start difference. First operand 1384 states and 2288 transitions. Second operand 9 states.
[2019-10-13 18:05:55,385 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:05:55,386 INFO  L93              Difference]: Finished difference Result 4170 states and 6860 transitions.
[2019-10-13 18:05:55,390 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2019-10-13 18:05:55,391 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 119
[2019-10-13 18:05:55,391 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:05:55,405 INFO  L225             Difference]: With dead ends: 4170
[2019-10-13 18:05:55,405 INFO  L226             Difference]: Without dead ends: 2792
[2019-10-13 18:05:55,410 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240
[2019-10-13 18:05:55,413 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2792 states.
[2019-10-13 18:05:55,489 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 2773.
[2019-10-13 18:05:55,490 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2773 states.
[2019-10-13 18:05:55,501 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2773 states to 2773 states and 3896 transitions.
[2019-10-13 18:05:55,501 INFO  L78                 Accepts]: Start accepts. Automaton has 2773 states and 3896 transitions. Word has length 119
[2019-10-13 18:05:55,503 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:05:55,503 INFO  L462      AbstractCegarLoop]: Abstraction has 2773 states and 3896 transitions.
[2019-10-13 18:05:55,503 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2019-10-13 18:05:55,504 INFO  L276                IsEmpty]: Start isEmpty. Operand 2773 states and 3896 transitions.
[2019-10-13 18:05:55,506 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 124
[2019-10-13 18:05:55,507 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:05:55,507 INFO  L380         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:05:55,507 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:05:55,507 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:05:55,507 INFO  L82        PathProgramCache]: Analyzing trace with hash 2059459070, now seen corresponding path program 1 times
[2019-10-13 18:05:55,508 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:05:55,508 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339028128]
[2019-10-13 18:05:55,508 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:05:55,508 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:05:55,509 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:05:55,526 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:55,581 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:55,609 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:05:55,718 INFO  L134       CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 18:05:55,719 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339028128]
[2019-10-13 18:05:55,719 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 18:05:55,719 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2019-10-13 18:05:55,720 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564276149]
[2019-10-13 18:05:55,720 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-10-13 18:05:55,720 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:05:55,721 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-10-13 18:05:55,721 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2019-10-13 18:05:55,721 INFO  L87              Difference]: Start difference. First operand 2773 states and 3896 transitions. Second operand 9 states.
[2019-10-13 18:06:01,888 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:06:01,889 INFO  L93              Difference]: Finished difference Result 9052 states and 13211 transitions.
[2019-10-13 18:06:01,890 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2019-10-13 18:06:01,890 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 123
[2019-10-13 18:06:01,892 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:06:01,932 INFO  L225             Difference]: With dead ends: 9052
[2019-10-13 18:06:01,932 INFO  L226             Difference]: Without dead ends: 6285
[2019-10-13 18:06:01,942 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210
[2019-10-13 18:06:01,950 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6285 states.
[2019-10-13 18:06:02,209 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6285 to 6259.
[2019-10-13 18:06:02,210 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 6259 states.
[2019-10-13 18:06:02,238 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6259 states to 6259 states and 8349 transitions.
[2019-10-13 18:06:02,239 INFO  L78                 Accepts]: Start accepts. Automaton has 6259 states and 8349 transitions. Word has length 123
[2019-10-13 18:06:02,240 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:06:02,240 INFO  L462      AbstractCegarLoop]: Abstraction has 6259 states and 8349 transitions.
[2019-10-13 18:06:02,240 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2019-10-13 18:06:02,240 INFO  L276                IsEmpty]: Start isEmpty. Operand 6259 states and 8349 transitions.
[2019-10-13 18:06:02,252 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 382
[2019-10-13 18:06:02,252 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:06:02,253 INFO  L380         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:06:02,253 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:06:02,253 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:06:02,254 INFO  L82        PathProgramCache]: Analyzing trace with hash 1075962294, now seen corresponding path program 1 times
[2019-10-13 18:06:02,255 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:06:02,255 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435545316]
[2019-10-13 18:06:02,255 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:06:02,256 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:06:02,257 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:06:02,298 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:06:02,410 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:06:02,449 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:06:02,495 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:06:02,631 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:06:02,808 INFO  L134       CoverageAnalysis]: Checked inductivity of 377 backedges. 201 proven. 82 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked.
[2019-10-13 18:06:02,809 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435545316]
[2019-10-13 18:06:02,809 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943635402]
[2019-10-13 18:06:02,810 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 18:06:03,072 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:06:03,077 INFO  L256         TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-13 18:06:03,101 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 18:06:03,304 INFO  L134       CoverageAnalysis]: Checked inductivity of 377 backedges. 334 proven. 2 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked.
[2019-10-13 18:06:03,305 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-13 18:06:03,305 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 11
[2019-10-13 18:06:03,306 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794495598]
[2019-10-13 18:06:03,307 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 11 states
[2019-10-13 18:06:03,307 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:06:03,307 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2019-10-13 18:06:03,308 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110
[2019-10-13 18:06:03,308 INFO  L87              Difference]: Start difference. First operand 6259 states and 8349 transitions. Second operand 11 states.
[2019-10-13 18:06:07,770 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:06:07,770 INFO  L93              Difference]: Finished difference Result 15628 states and 21508 transitions.
[2019-10-13 18:06:07,771 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2019-10-13 18:06:07,771 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 381
[2019-10-13 18:06:07,772 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:06:07,815 INFO  L225             Difference]: With dead ends: 15628
[2019-10-13 18:06:07,816 INFO  L226             Difference]: Without dead ends: 9375
[2019-10-13 18:06:07,832 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 388 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240
[2019-10-13 18:06:07,843 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9375 states.
[2019-10-13 18:06:08,043 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9375 to 6953.
[2019-10-13 18:06:08,044 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 6953 states.
[2019-10-13 18:06:08,058 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6953 states to 6953 states and 9195 transitions.
[2019-10-13 18:06:08,059 INFO  L78                 Accepts]: Start accepts. Automaton has 6953 states and 9195 transitions. Word has length 381
[2019-10-13 18:06:08,060 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:06:08,060 INFO  L462      AbstractCegarLoop]: Abstraction has 6953 states and 9195 transitions.
[2019-10-13 18:06:08,060 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2019-10-13 18:06:08,061 INFO  L276                IsEmpty]: Start isEmpty. Operand 6953 states and 9195 transitions.
[2019-10-13 18:06:08,070 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 392
[2019-10-13 18:06:08,070 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:06:08,071 INFO  L380         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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]
[2019-10-13 18:06:08,278 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 18:06:08,278 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:06:08,279 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:06:08,279 INFO  L82        PathProgramCache]: Analyzing trace with hash -1852265774, now seen corresponding path program 1 times
[2019-10-13 18:06:08,279 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:06:08,279 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112046717]
[2019-10-13 18:06:08,280 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:06:08,280 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:06:08,280 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:06:08,334 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:06:08,411 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:06:08,437 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:06:08,498 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:06:08,763 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:06:09,044 INFO  L134       CoverageAnalysis]: Checked inductivity of 435 backedges. 221 proven. 114 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked.
[2019-10-13 18:06:09,045 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112046717]
[2019-10-13 18:06:09,045 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663698027]
[2019-10-13 18:06:09,045 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 18:06:09,164 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:06:09,169 INFO  L256         TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-13 18:06:09,186 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 18:06:09,337 INFO  L134       CoverageAnalysis]: Checked inductivity of 435 backedges. 336 proven. 2 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked.
[2019-10-13 18:06:09,337 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-13 18:06:09,338 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12
[2019-10-13 18:06:09,338 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082870355]
[2019-10-13 18:06:09,339 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 12 states
[2019-10-13 18:06:09,339 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:06:09,340 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2019-10-13 18:06:09,340 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132
[2019-10-13 18:06:09,340 INFO  L87              Difference]: Start difference. First operand 6953 states and 9195 transitions. Second operand 12 states.