java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label35.c


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This is Ultimate 0.1.24-f4eb214f-m
[2019-10-13 18:00:26,265 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2019-10-13 18:00:26,356 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 18:00:26,375 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-13 18:00:26,375 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-13 18:00:26,379 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-13 18:00:26,379 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-13 18:00:26,380 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-13 18:00:26,380 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-13 18:00:26,381 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-13 18:00:26,381 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-13 18:00:26,381 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-13 18:00:26,381 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-13 18:00:26,382 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-13 18:00:26,382 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-13 18:00:26,383 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-13 18:00:26,383 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-13 18:00:26,383 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-13 18:00:26,383 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-13 18:00:26,384 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-13 18:00:26,384 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-13 18:00:26,384 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-13 18:00:26,384 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-13 18:00:26,384 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-13 18:00:26,385 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-13 18:00:26,385 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-13 18:00:26,385 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-13 18:00:26,385 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-13 18:00:26,385 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-13 18:00:26,386 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-13 18:00:26,386 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-13 18:00:26,386 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-10-13 18:00:26,682 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-13 18:00:26,694 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-13 18:00:26,698 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-13 18:00:26,700 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-13 18:00:26,700 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-13 18:00:26,701 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label35.c
[2019-10-13 18:00:26,762 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b2396e95/77b02cb60d0346319ff0017444f0f11e/FLAGc55f555ce
[2019-10-13 18:00:27,348 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-13 18:00:27,349 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label35.c
[2019-10-13 18:00:27,370 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b2396e95/77b02cb60d0346319ff0017444f0f11e/FLAGc55f555ce
[2019-10-13 18:00:27,594 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b2396e95/77b02cb60d0346319ff0017444f0f11e
[2019-10-13 18:00:27,604 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-13 18:00:27,605 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-13 18:00:27,607 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-13 18:00:27,607 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-13 18:00:27,610 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-13 18:00:27,611 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:00:27" (1/1) ...
[2019-10-13 18:00:27,614 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ac730e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:00:27, skipping insertion in model container
[2019-10-13 18:00:27,614 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:00:27" (1/1) ...
[2019-10-13 18:00:27,621 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-13 18:00:27,688 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-13 18:00:28,337 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 18:00:28,344 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-13 18:00:28,699 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 18:00:28,727 INFO  L192         MainTranslator]: Completed translation
[2019-10-13 18:00:28,728 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:00:28 WrapperNode
[2019-10-13 18:00:28,729 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-13 18:00:28,730 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-13 18:00:28,730 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-13 18:00:28,730 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-13 18:00:28,753 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:00:28" (1/1) ...
[2019-10-13 18:00:28,754 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:00:28" (1/1) ...
[2019-10-13 18:00:28,799 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:00:28" (1/1) ...
[2019-10-13 18:00:28,800 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:00:28" (1/1) ...
[2019-10-13 18:00:28,858 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:00:28" (1/1) ...
[2019-10-13 18:00:28,873 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:00:28" (1/1) ...
[2019-10-13 18:00:28,889 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:00:28" (1/1) ...
[2019-10-13 18:00:28,906 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-13 18:00:28,907 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-13 18:00:28,907 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-13 18:00:28,908 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-13 18:00:28,909 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:00:28" (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 18:00:28,987 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-13 18:00:28,987 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-13 18:00:28,987 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-10-13 18:00:28,988 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-13 18:00:28,988 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-10-13 18:00:28,989 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-13 18:00:28,989 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-13 18:00:28,989 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-10-13 18:00:28,990 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-13 18:00:28,990 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-13 18:00:28,990 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-13 18:00:30,949 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-13 18:00:30,950 INFO  L284             CfgBuilder]: Removed 1 assume(true) statements.
[2019-10-13 18:00:30,955 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:00:30 BoogieIcfgContainer
[2019-10-13 18:00:30,955 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-13 18:00:30,957 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-13 18:00:30,958 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-13 18:00:30,963 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-13 18:00:30,964 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:00:27" (1/3) ...
[2019-10-13 18:00:30,965 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@493a5071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:00:30, skipping insertion in model container
[2019-10-13 18:00:30,966 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:00:28" (2/3) ...
[2019-10-13 18:00:30,967 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@493a5071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:00:30, skipping insertion in model container
[2019-10-13 18:00:30,967 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:00:30" (3/3) ...
[2019-10-13 18:00:30,978 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem11_label35.c
[2019-10-13 18:00:30,989 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-13 18:00:31,000 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-13 18:00:31,013 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-13 18:00:31,057 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-13 18:00:31,057 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-13 18:00:31,057 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-13 18:00:31,057 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-13 18:00:31,058 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-13 18:00:31,058 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-13 18:00:31,058 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-13 18:00:31,058 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-13 18:00:31,082 INFO  L276                IsEmpty]: Start isEmpty. Operand 292 states.
[2019-10-13 18:00:31,092 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 65
[2019-10-13 18:00:31,093 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:00:31,094 INFO  L380         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 18:00:31,096 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:00:31,102 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:00:31,103 INFO  L82        PathProgramCache]: Analyzing trace with hash 524759243, now seen corresponding path program 1 times
[2019-10-13 18:00:31,111 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:00:31,112 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287159824]
[2019-10-13 18:00:31,112 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:00:31,112 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:00:31,112 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:00:31,282 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:31,536 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:31,573 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 18:00:31,574 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287159824]
[2019-10-13 18:00:31,575 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 18:00:31,575 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-13 18:00:31,576 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361218309]
[2019-10-13 18:00:31,581 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 18:00:31,582 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:00:31,596 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 18:00:31,597 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-10-13 18:00:31,600 INFO  L87              Difference]: Start difference. First operand 292 states. Second operand 5 states.
[2019-10-13 18:00:34,923 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:00:34,924 INFO  L93              Difference]: Finished difference Result 1006 states and 1797 transitions.
[2019-10-13 18:00:34,924 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-13 18:00:34,925 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 64
[2019-10-13 18:00:34,926 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:00:34,947 INFO  L225             Difference]: With dead ends: 1006
[2019-10-13 18:00:34,947 INFO  L226             Difference]: Without dead ends: 630
[2019-10-13 18:00:34,967 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 18:00:34,990 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 630 states.
[2019-10-13 18:00:35,065 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 620.
[2019-10-13 18:00:35,066 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 620 states.
[2019-10-13 18:00:35,076 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 915 transitions.
[2019-10-13 18:00:35,078 INFO  L78                 Accepts]: Start accepts. Automaton has 620 states and 915 transitions. Word has length 64
[2019-10-13 18:00:35,079 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:00:35,080 INFO  L462      AbstractCegarLoop]: Abstraction has 620 states and 915 transitions.
[2019-10-13 18:00:35,080 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 18:00:35,081 INFO  L276                IsEmpty]: Start isEmpty. Operand 620 states and 915 transitions.
[2019-10-13 18:00:35,089 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 138
[2019-10-13 18:00:35,090 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:00:35,090 INFO  L380         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 18:00:35,090 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:00:35,091 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:00:35,091 INFO  L82        PathProgramCache]: Analyzing trace with hash -1140309603, now seen corresponding path program 1 times
[2019-10-13 18:00:35,091 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:00:35,092 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49777997]
[2019-10-13 18:00:35,092 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:00:35,092 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:00:35,092 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:00:35,177 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:35,322 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:35,353 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:35,400 INFO  L134       CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 18:00:35,400 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49777997]
[2019-10-13 18:00:35,400 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756603301]
[2019-10-13 18:00:35,401 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 18:00:35,482 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:35,485 INFO  L256         TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-13 18:00:35,495 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 18:00:35,582 INFO  L134       CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 18:00:35,583 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-13 18:00:35,583 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2019-10-13 18:00:35,584 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159048137]
[2019-10-13 18:00:35,588 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-13 18:00:35,588 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:00:35,589 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-13 18:00:35,589 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2019-10-13 18:00:35,589 INFO  L87              Difference]: Start difference. First operand 620 states and 915 transitions. Second operand 3 states.
[2019-10-13 18:00:36,751 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:00:36,751 INFO  L93              Difference]: Finished difference Result 1816 states and 2718 transitions.
[2019-10-13 18:00:36,753 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-10-13 18:00:36,753 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 137
[2019-10-13 18:00:36,754 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:00:36,761 INFO  L225             Difference]: With dead ends: 1816
[2019-10-13 18:00:36,761 INFO  L226             Difference]: Without dead ends: 1202
[2019-10-13 18:00:36,764 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2019-10-13 18:00:36,766 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1202 states.
[2019-10-13 18:00:36,816 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1194.
[2019-10-13 18:00:36,817 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1194 states.
[2019-10-13 18:00:36,823 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 1631 transitions.
[2019-10-13 18:00:36,823 INFO  L78                 Accepts]: Start accepts. Automaton has 1194 states and 1631 transitions. Word has length 137
[2019-10-13 18:00:36,824 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:00:36,824 INFO  L462      AbstractCegarLoop]: Abstraction has 1194 states and 1631 transitions.
[2019-10-13 18:00:36,824 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-13 18:00:36,825 INFO  L276                IsEmpty]: Start isEmpty. Operand 1194 states and 1631 transitions.
[2019-10-13 18:00:36,830 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 163
[2019-10-13 18:00:36,830 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:00:36,831 INFO  L380         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2019-10-13 18:00:37,036 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 18:00:37,037 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:00:37,037 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:00:37,038 INFO  L82        PathProgramCache]: Analyzing trace with hash -1496412874, now seen corresponding path program 1 times
[2019-10-13 18:00:37,038 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:00:37,039 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855038750]
[2019-10-13 18:00:37,039 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:00:37,039 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:00:37,039 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:00:37,084 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:37,194 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:37,226 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:37,312 INFO  L134       CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 18:00:37,313 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855038750]
[2019-10-13 18:00:37,313 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 18:00:37,313 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2019-10-13 18:00:37,313 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756073912]
[2019-10-13 18:00:37,314 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 7 states
[2019-10-13 18:00:37,314 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:00:37,315 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2019-10-13 18:00:37,315 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2019-10-13 18:00:37,315 INFO  L87              Difference]: Start difference. First operand 1194 states and 1631 transitions. Second operand 7 states.
[2019-10-13 18:00:39,702 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:00:39,702 INFO  L93              Difference]: Finished difference Result 3415 states and 4910 transitions.
[2019-10-13 18:00:39,702 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2019-10-13 18:00:39,703 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 162
[2019-10-13 18:00:39,703 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:00:39,714 INFO  L225             Difference]: With dead ends: 3415
[2019-10-13 18:00:39,715 INFO  L226             Difference]: Without dead ends: 2227
[2019-10-13 18:00:39,719 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2019-10-13 18:00:39,722 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2227 states.
[2019-10-13 18:00:39,784 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2227 to 2196.
[2019-10-13 18:00:39,784 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2196 states.
[2019-10-13 18:00:39,792 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2196 states to 2196 states and 2885 transitions.
[2019-10-13 18:00:39,793 INFO  L78                 Accepts]: Start accepts. Automaton has 2196 states and 2885 transitions. Word has length 162
[2019-10-13 18:00:39,793 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:00:39,793 INFO  L462      AbstractCegarLoop]: Abstraction has 2196 states and 2885 transitions.
[2019-10-13 18:00:39,793 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2019-10-13 18:00:39,794 INFO  L276                IsEmpty]: Start isEmpty. Operand 2196 states and 2885 transitions.
[2019-10-13 18:00:39,800 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 223
[2019-10-13 18:00:39,800 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:00:39,800 INFO  L380         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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]
[2019-10-13 18:00:39,800 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:00:39,801 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:00:39,801 INFO  L82        PathProgramCache]: Analyzing trace with hash -229417523, now seen corresponding path program 1 times
[2019-10-13 18:00:39,801 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:00:39,801 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921341226]
[2019-10-13 18:00:39,802 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:00:39,802 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:00:39,802 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:00:39,837 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:39,961 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:39,978 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:40,032 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:40,096 INFO  L134       CoverageAnalysis]: Checked inductivity of 188 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked.
[2019-10-13 18:00:40,096 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921341226]
[2019-10-13 18:00:40,096 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042559346]
[2019-10-13 18:00:40,097 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 18:00:40,205 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:40,207 INFO  L256         TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-13 18:00:40,213 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 18:00:40,309 INFO  L134       CoverageAnalysis]: Checked inductivity of 188 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked.
[2019-10-13 18:00:40,309 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-13 18:00:40,309 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2019-10-13 18:00:40,310 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298555018]
[2019-10-13 18:00:40,310 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-13 18:00:40,311 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:00:40,311 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-13 18:00:40,311 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2019-10-13 18:00:40,311 INFO  L87              Difference]: Start difference. First operand 2196 states and 2885 transitions. Second operand 3 states.
[2019-10-13 18:00:41,425 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:00:41,425 INFO  L93              Difference]: Finished difference Result 5559 states and 7527 transitions.
[2019-10-13 18:00:41,426 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-10-13 18:00:41,426 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 222
[2019-10-13 18:00:41,427 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:00:41,446 INFO  L225             Difference]: With dead ends: 5559
[2019-10-13 18:00:41,446 INFO  L226             Difference]: Without dead ends: 3369
[2019-10-13 18:00:41,453 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2019-10-13 18:00:41,458 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3369 states.
[2019-10-13 18:00:41,538 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3369 to 3166.
[2019-10-13 18:00:41,538 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3166 states.
[2019-10-13 18:00:41,548 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3166 states to 3166 states and 4329 transitions.
[2019-10-13 18:00:41,548 INFO  L78                 Accepts]: Start accepts. Automaton has 3166 states and 4329 transitions. Word has length 222
[2019-10-13 18:00:41,549 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:00:41,549 INFO  L462      AbstractCegarLoop]: Abstraction has 3166 states and 4329 transitions.
[2019-10-13 18:00:41,549 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-13 18:00:41,549 INFO  L276                IsEmpty]: Start isEmpty. Operand 3166 states and 4329 transitions.
[2019-10-13 18:00:41,556 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 228
[2019-10-13 18:00:41,556 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:00:41,557 INFO  L380         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1]
[2019-10-13 18:00:41,760 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 18:00:41,761 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:00:41,761 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:00:41,761 INFO  L82        PathProgramCache]: Analyzing trace with hash 1392516474, now seen corresponding path program 1 times
[2019-10-13 18:00:41,762 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:00:41,762 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146124100]
[2019-10-13 18:00:41,763 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:00:41,763 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:00:41,763 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:00:41,789 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:41,850 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:41,919 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:42,011 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:42,087 INFO  L134       CoverageAnalysis]: Checked inductivity of 186 backedges. 114 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2019-10-13 18:00:42,088 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146124100]
[2019-10-13 18:00:42,088 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300750553]
[2019-10-13 18:00:42,088 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 18:00:42,179 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:42,180 INFO  L256         TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 6 conjunts are in the unsatisfiable core
[2019-10-13 18:00:42,196 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 18:00:42,267 INFO  L134       CoverageAnalysis]: Checked inductivity of 186 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked.
[2019-10-13 18:00:42,267 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-13 18:00:42,268 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11
[2019-10-13 18:00:42,268 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119674188]
[2019-10-13 18:00:42,268 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 18:00:42,269 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:00:42,269 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 18:00:42,269 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110
[2019-10-13 18:00:42,269 INFO  L87              Difference]: Start difference. First operand 3166 states and 4329 transitions. Second operand 5 states.
[2019-10-13 18:00:43,882 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:00:43,882 INFO  L93              Difference]: Finished difference Result 6609 states and 9187 transitions.
[2019-10-13 18:00:43,887 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-13 18:00:43,887 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 227
[2019-10-13 18:00:43,888 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:00:43,906 INFO  L225             Difference]: With dead ends: 6609
[2019-10-13 18:00:43,906 INFO  L226             Difference]: Without dead ends: 3449
[2019-10-13 18:00:43,915 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182
[2019-10-13 18:00:43,919 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3449 states.
[2019-10-13 18:00:43,996 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3449 to 3396.
[2019-10-13 18:00:43,996 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3396 states.
[2019-10-13 18:00:44,006 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3396 states to 3396 states and 4454 transitions.
[2019-10-13 18:00:44,007 INFO  L78                 Accepts]: Start accepts. Automaton has 3396 states and 4454 transitions. Word has length 227
[2019-10-13 18:00:44,007 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:00:44,007 INFO  L462      AbstractCegarLoop]: Abstraction has 3396 states and 4454 transitions.
[2019-10-13 18:00:44,007 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 18:00:44,007 INFO  L276                IsEmpty]: Start isEmpty. Operand 3396 states and 4454 transitions.
[2019-10-13 18:00:44,014 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 228
[2019-10-13 18:00:44,014 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:00:44,014 INFO  L380         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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]
[2019-10-13 18:00:44,221 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 18:00:44,221 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:00:44,222 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:00:44,222 INFO  L82        PathProgramCache]: Analyzing trace with hash -176162622, now seen corresponding path program 1 times
[2019-10-13 18:00:44,223 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:00:44,223 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912900120]
[2019-10-13 18:00:44,224 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:00:44,224 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:00:44,224 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:00:44,259 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:44,339 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:44,355 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:44,382 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:44,499 INFO  L134       CoverageAnalysis]: Checked inductivity of 188 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked.
[2019-10-13 18:00:44,500 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912900120]
[2019-10-13 18:00:44,500 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945840329]
[2019-10-13 18:00:44,500 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 18:00:44,633 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:44,636 INFO  L256         TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-13 18:00:44,641 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 18:00:44,716 INFO  L134       CoverageAnalysis]: Checked inductivity of 188 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked.
[2019-10-13 18:00:44,717 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-13 18:00:44,717 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6
[2019-10-13 18:00:44,718 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500780044]
[2019-10-13 18:00:44,719 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-13 18:00:44,719 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:00:44,720 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-13 18:00:44,720 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-10-13 18:00:44,720 INFO  L87              Difference]: Start difference. First operand 3396 states and 4454 transitions. Second operand 3 states.
[2019-10-13 18:00:45,918 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:00:45,919 INFO  L93              Difference]: Finished difference Result 7939 states and 10846 transitions.
[2019-10-13 18:00:45,920 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-10-13 18:00:45,920 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 227
[2019-10-13 18:00:45,921 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:00:45,942 INFO  L225             Difference]: With dead ends: 7939
[2019-10-13 18:00:45,942 INFO  L226             Difference]: Without dead ends: 4737
[2019-10-13 18:00:45,952 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 232 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-10-13 18:00:45,958 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4737 states.
[2019-10-13 18:00:46,061 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4737 to 4735.
[2019-10-13 18:00:46,061 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4735 states.
[2019-10-13 18:00:46,071 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4735 states to 4735 states and 6133 transitions.
[2019-10-13 18:00:46,071 INFO  L78                 Accepts]: Start accepts. Automaton has 4735 states and 6133 transitions. Word has length 227
[2019-10-13 18:00:46,072 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:00:46,072 INFO  L462      AbstractCegarLoop]: Abstraction has 4735 states and 6133 transitions.
[2019-10-13 18:00:46,072 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-13 18:00:46,072 INFO  L276                IsEmpty]: Start isEmpty. Operand 4735 states and 6133 transitions.
[2019-10-13 18:00:46,080 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 229
[2019-10-13 18:00:46,080 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:00:46,080 INFO  L380         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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]
[2019-10-13 18:00:46,284 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 18:00:46,284 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:00:46,285 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:00:46,285 INFO  L82        PathProgramCache]: Analyzing trace with hash 860590599, now seen corresponding path program 1 times
[2019-10-13 18:00:46,285 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:00:46,285 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057983202]
[2019-10-13 18:00:46,286 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:00:46,286 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:00:46,286 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:00:46,337 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:46,407 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:46,432 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:46,481 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:46,646 INFO  L134       CoverageAnalysis]: Checked inductivity of 187 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-10-13 18:00:46,647 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057983202]
[2019-10-13 18:00:46,647 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389316149]
[2019-10-13 18:00:46,647 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 18:00:46,733 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:46,734 INFO  L256         TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-13 18:00:46,737 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 18:00:46,797 INFO  L134       CoverageAnalysis]: Checked inductivity of 187 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked.
[2019-10-13 18:00:46,797 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-13 18:00:46,797 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9
[2019-10-13 18:00:46,798 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66537150]
[2019-10-13 18:00:46,798 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-13 18:00:46,799 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:00:46,799 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-13 18:00:46,799 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2019-10-13 18:00:46,799 INFO  L87              Difference]: Start difference. First operand 4735 states and 6133 transitions. Second operand 3 states.
[2019-10-13 18:00:48,064 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:00:48,065 INFO  L93              Difference]: Finished difference Result 10794 states and 14406 transitions.
[2019-10-13 18:00:48,065 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-10-13 18:00:48,065 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 228
[2019-10-13 18:00:48,066 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:00:48,091 INFO  L225             Difference]: With dead ends: 10794
[2019-10-13 18:00:48,091 INFO  L226             Difference]: Without dead ends: 6253
[2019-10-13 18:00:48,102 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 231 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2019-10-13 18:00:48,110 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6253 states.
[2019-10-13 18:00:48,271 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6253 to 6253.
[2019-10-13 18:00:48,272 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 6253 states.
[2019-10-13 18:00:48,285 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6253 states to 6253 states and 8078 transitions.
[2019-10-13 18:00:48,286 INFO  L78                 Accepts]: Start accepts. Automaton has 6253 states and 8078 transitions. Word has length 228
[2019-10-13 18:00:48,286 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:00:48,287 INFO  L462      AbstractCegarLoop]: Abstraction has 6253 states and 8078 transitions.
[2019-10-13 18:00:48,287 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-13 18:00:48,287 INFO  L276                IsEmpty]: Start isEmpty. Operand 6253 states and 8078 transitions.
[2019-10-13 18:00:48,300 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 232
[2019-10-13 18:00:48,301 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:00:48,301 INFO  L380         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 18:00:48,507 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 18:00:48,507 INFO  L410      AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:00:48,507 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:00:48,507 INFO  L82        PathProgramCache]: Analyzing trace with hash -1301706544, now seen corresponding path program 1 times
[2019-10-13 18:00:48,508 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:00:48,508 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118151805]
[2019-10-13 18:00:48,508 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:00:48,509 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:00:48,509 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:00:48,591 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:48,801 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:48,841 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:48,919 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:49,120 INFO  L134       CoverageAnalysis]: Checked inductivity of 187 backedges. 66 proven. 120 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-10-13 18:00:49,121 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118151805]
[2019-10-13 18:00:49,122 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720308972]
[2019-10-13 18:00:49,122 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 18:00:49,214 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:49,216 INFO  L256         TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 11 conjunts are in the unsatisfiable core
[2019-10-13 18:00:49,219 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 18:00:49,265 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 3 terms
[2019-10-13 18:00:49,442 INFO  L134       CoverageAnalysis]: Checked inductivity of 187 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked.
[2019-10-13 18:00:49,443 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-13 18:00:49,443 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16
[2019-10-13 18:00:49,443 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216750563]
[2019-10-13 18:00:49,444 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 18:00:49,444 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:00:49,444 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 18:00:49,444 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240
[2019-10-13 18:00:49,445 INFO  L87              Difference]: Start difference. First operand 6253 states and 8078 transitions. Second operand 5 states.
[2019-10-13 18:00:51,269 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:00:51,270 INFO  L93              Difference]: Finished difference Result 12361 states and 16092 transitions.
[2019-10-13 18:00:51,270 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2019-10-13 18:00:51,270 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 231
[2019-10-13 18:00:51,270 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:00:51,296 INFO  L225             Difference]: With dead ends: 12361
[2019-10-13 18:00:51,296 INFO  L226             Difference]: Without dead ends: 6302
[2019-10-13 18:00:51,309 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342
[2019-10-13 18:00:51,317 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6302 states.
[2019-10-13 18:00:51,445 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6302 to 6293.
[2019-10-13 18:00:51,445 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 6293 states.
[2019-10-13 18:00:51,459 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6293 states to 6293 states and 8161 transitions.
[2019-10-13 18:00:51,459 INFO  L78                 Accepts]: Start accepts. Automaton has 6293 states and 8161 transitions. Word has length 231
[2019-10-13 18:00:51,460 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:00:51,460 INFO  L462      AbstractCegarLoop]: Abstraction has 6293 states and 8161 transitions.
[2019-10-13 18:00:51,460 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 18:00:51,460 INFO  L276                IsEmpty]: Start isEmpty. Operand 6293 states and 8161 transitions.
[2019-10-13 18:00:51,472 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 306
[2019-10-13 18:00:51,472 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:00:51,473 INFO  L380         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:00:51,686 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 18:00:51,686 INFO  L410      AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:00:51,686 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:00:51,687 INFO  L82        PathProgramCache]: Analyzing trace with hash 1649361938, now seen corresponding path program 1 times
[2019-10-13 18:00:51,687 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:00:51,688 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792153907]
[2019-10-13 18:00:51,688 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:00:51,688 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:00:51,688 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:00:51,736 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:51,861 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:51,898 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:52,046 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:52,217 INFO  L134       CoverageAnalysis]: Checked inductivity of 208 backedges. 87 proven. 120 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-10-13 18:00:52,218 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792153907]
[2019-10-13 18:00:52,218 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139415082]
[2019-10-13 18:00:52,218 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 18:00:52,322 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:00:52,323 INFO  L256         TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 11 conjunts are in the unsatisfiable core
[2019-10-13 18:00:52,339 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 18:00:52,431 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 3 terms
[2019-10-13 18:00:52,571 INFO  L134       CoverageAnalysis]: Checked inductivity of 208 backedges. 206 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 18:00:52,572 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-13 18:00:52,572 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 19
[2019-10-13 18:00:52,572 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757638233]
[2019-10-13 18:00:52,576 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 19 states
[2019-10-13 18:00:52,576 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:00:52,576 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2019-10-13 18:00:52,577 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342
[2019-10-13 18:00:52,577 INFO  L87              Difference]: Start difference. First operand 6293 states and 8161 transitions. Second operand 19 states.