/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label29.c


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This is Ultimate 0.1.24-fb55353
[2019-11-06 19:05:36,136 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2019-11-06 19:05:36,216 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2019-11-06 19:05:36,237 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-11-06 19:05:36,238 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-11-06 19:05:36,240 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-11-06 19:05:36,240 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-11-06 19:05:36,240 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-11-06 19:05:36,241 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-11-06 19:05:36,241 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-11-06 19:05:36,241 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-11-06 19:05:36,241 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-11-06 19:05:36,241 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-11-06 19:05:36,242 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-11-06 19:05:36,243 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-11-06 19:05:36,243 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-11-06 19:05:36,243 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-11-06 19:05:36,244 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-11-06 19:05:36,244 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-11-06 19:05:36,244 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-11-06 19:05:36,244 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-11-06 19:05:36,244 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-11-06 19:05:36,245 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-11-06 19:05:36,245 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-11-06 19:05:36,245 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-06 19:05:36,245 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-11-06 19:05:36,245 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-11-06 19:05:36,245 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-11-06 19:05:36,246 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-11-06 19:05:36,246 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-11-06 19:05:36,246 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-11-06 19:05:36,246 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-11-06 19:05:36,524 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-11-06 19:05:36,542 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-11-06 19:05:36,546 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-11-06 19:05:36,548 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-11-06 19:05:36,548 INFO  L275        PluginConnector]: CDTParser initialized
[2019-11-06 19:05:36,549 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label29.c
[2019-11-06 19:05:36,622 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbeb1fba7/f094587e57cd42faa0e15da842da27da/FLAG5a8ca1d44
[2019-11-06 19:05:37,219 INFO  L306              CDTParser]: Found 1 translation units.
[2019-11-06 19:05:37,219 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label29.c
[2019-11-06 19:05:37,231 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbeb1fba7/f094587e57cd42faa0e15da842da27da/FLAG5a8ca1d44
[2019-11-06 19:05:37,537 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbeb1fba7/f094587e57cd42faa0e15da842da27da
[2019-11-06 19:05:37,548 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-11-06 19:05:37,549 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-11-06 19:05:37,550 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-11-06 19:05:37,551 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-11-06 19:05:37,554 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-11-06 19:05:37,555 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:05:37" (1/1) ...
[2019-11-06 19:05:37,558 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@544ba177 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:05:37, skipping insertion in model container
[2019-11-06 19:05:37,558 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:05:37" (1/1) ...
[2019-11-06 19:05:37,566 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-11-06 19:05:37,631 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-11-06 19:05:38,220 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-06 19:05:38,224 INFO  L188         MainTranslator]: Completed pre-run
[2019-11-06 19:05:38,360 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-06 19:05:38,377 INFO  L192         MainTranslator]: Completed translation
[2019-11-06 19:05:38,377 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:05:38 WrapperNode
[2019-11-06 19:05:38,377 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-11-06 19:05:38,378 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-11-06 19:05:38,378 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-11-06 19:05:38,378 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-11-06 19:05:38,393 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:05:38" (1/1) ...
[2019-11-06 19:05:38,394 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:05:38" (1/1) ...
[2019-11-06 19:05:38,416 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:05:38" (1/1) ...
[2019-11-06 19:05:38,416 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:05:38" (1/1) ...
[2019-11-06 19:05:38,461 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:05:38" (1/1) ...
[2019-11-06 19:05:38,476 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:05:38" (1/1) ...
[2019-11-06 19:05:38,489 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:05:38" (1/1) ...
[2019-11-06 19:05:38,500 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-11-06 19:05:38,500 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-11-06 19:05:38,501 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-11-06 19:05:38,501 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-11-06 19:05:38,502 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:05:38" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-06 19:05:38,585 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-11-06 19:05:38,585 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-11-06 19:05:38,585 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-11-06 19:05:38,586 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-11-06 19:05:38,586 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-11-06 19:05:38,587 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-11-06 19:05:38,587 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-11-06 19:05:38,587 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-11-06 19:05:38,588 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-11-06 19:05:38,588 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-11-06 19:05:38,589 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-11-06 19:05:39,950 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-11-06 19:05:39,954 INFO  L284             CfgBuilder]: Removed 1 assume(true) statements.
[2019-11-06 19:05:39,956 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:05:39 BoogieIcfgContainer
[2019-11-06 19:05:39,956 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-11-06 19:05:39,958 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-11-06 19:05:39,959 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-11-06 19:05:39,964 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-11-06 19:05:39,964 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:05:37" (1/3) ...
[2019-11-06 19:05:39,965 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d7f4bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:05:39, skipping insertion in model container
[2019-11-06 19:05:39,965 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:05:38" (2/3) ...
[2019-11-06 19:05:39,966 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d7f4bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:05:39, skipping insertion in model container
[2019-11-06 19:05:39,966 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:05:39" (3/3) ...
[2019-11-06 19:05:39,972 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem10_label29.c
[2019-11-06 19:05:39,987 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-11-06 19:05:39,997 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-11-06 19:05:40,010 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-11-06 19:05:40,049 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-11-06 19:05:40,050 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-11-06 19:05:40,050 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-11-06 19:05:40,050 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-11-06 19:05:40,050 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-11-06 19:05:40,051 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-11-06 19:05:40,051 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-11-06 19:05:40,051 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-11-06 19:05:40,081 INFO  L276                IsEmpty]: Start isEmpty. Operand 215 states.
[2019-11-06 19:05:40,090 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2019-11-06 19:05:40,090 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:05:40,091 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:05:40,093 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:05:40,099 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:05:40,099 INFO  L82        PathProgramCache]: Analyzing trace with hash 1961965038, now seen corresponding path program 1 times
[2019-11-06 19:05:40,108 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:05:40,108 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418227660]
[2019-11-06 19:05:40,109 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:05:40,222 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:05:40,376 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:05:40,404 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 19:05:40,408 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418227660]
[2019-11-06 19:05:40,410 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 19:05:40,410 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 19:05:40,413 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386343122]
[2019-11-06 19:05:40,419 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 19:05:40,419 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:05:40,433 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 19:05:40,434 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-11-06 19:05:40,436 INFO  L87              Difference]: Start difference. First operand 215 states. Second operand 5 states.
[2019-11-06 19:05:42,598 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:05:42,598 INFO  L93              Difference]: Finished difference Result 730 states and 1301 transitions.
[2019-11-06 19:05:42,599 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-11-06 19:05:42,601 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 21
[2019-11-06 19:05:42,601 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:05:42,633 INFO  L225             Difference]: With dead ends: 730
[2019-11-06 19:05:42,633 INFO  L226             Difference]: Without dead ends: 447
[2019-11-06 19:05:42,648 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2019-11-06 19:05:42,668 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 447 states.
[2019-11-06 19:05:42,729 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 441.
[2019-11-06 19:05:42,731 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 441 states.
[2019-11-06 19:05:42,734 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 672 transitions.
[2019-11-06 19:05:42,736 INFO  L78                 Accepts]: Start accepts. Automaton has 441 states and 672 transitions. Word has length 21
[2019-11-06 19:05:42,736 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:05:42,736 INFO  L462      AbstractCegarLoop]: Abstraction has 441 states and 672 transitions.
[2019-11-06 19:05:42,737 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 19:05:42,737 INFO  L276                IsEmpty]: Start isEmpty. Operand 441 states and 672 transitions.
[2019-11-06 19:05:42,742 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 104
[2019-11-06 19:05:42,742 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:05:42,743 INFO  L410         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:05:42,743 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:05:42,743 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:05:42,743 INFO  L82        PathProgramCache]: Analyzing trace with hash -61181822, now seen corresponding path program 1 times
[2019-11-06 19:05:42,744 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:05:42,744 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111122916]
[2019-11-06 19:05:42,744 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:05:42,801 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:05:42,883 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:05:42,950 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:05:43,133 INFO  L134       CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 19:05:43,134 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111122916]
[2019-11-06 19:05:43,136 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 19:05:43,136 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2019-11-06 19:05:43,137 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243945118]
[2019-11-06 19:05:43,143 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 8 states
[2019-11-06 19:05:43,143 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:05:43,143 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2019-11-06 19:05:43,144 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2019-11-06 19:05:43,144 INFO  L87              Difference]: Start difference. First operand 441 states and 672 transitions. Second operand 8 states.
[2019-11-06 19:05:45,548 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:05:45,548 INFO  L93              Difference]: Finished difference Result 1673 states and 2829 transitions.
[2019-11-06 19:05:45,549 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2019-11-06 19:05:45,549 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 103
[2019-11-06 19:05:45,550 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:05:45,561 INFO  L225             Difference]: With dead ends: 1673
[2019-11-06 19:05:45,562 INFO  L226             Difference]: Without dead ends: 1238
[2019-11-06 19:05:45,564 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156
[2019-11-06 19:05:45,567 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1238 states.
[2019-11-06 19:05:45,681 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 908.
[2019-11-06 19:05:45,682 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 908 states.
[2019-11-06 19:05:45,689 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1368 transitions.
[2019-11-06 19:05:45,690 INFO  L78                 Accepts]: Start accepts. Automaton has 908 states and 1368 transitions. Word has length 103
[2019-11-06 19:05:45,691 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:05:45,691 INFO  L462      AbstractCegarLoop]: Abstraction has 908 states and 1368 transitions.
[2019-11-06 19:05:45,691 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2019-11-06 19:05:45,691 INFO  L276                IsEmpty]: Start isEmpty. Operand 908 states and 1368 transitions.
[2019-11-06 19:05:45,702 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 120
[2019-11-06 19:05:45,703 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:05:45,703 INFO  L410         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:05:45,703 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:05:45,704 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:05:45,704 INFO  L82        PathProgramCache]: Analyzing trace with hash 711851938, now seen corresponding path program 1 times
[2019-11-06 19:05:45,704 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:05:45,705 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375618997]
[2019-11-06 19:05:45,705 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:05:45,765 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:05:45,855 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:05:45,894 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:05:46,026 INFO  L134       CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 19:05:46,026 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375618997]
[2019-11-06 19:05:46,026 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 19:05:46,026 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2019-11-06 19:05:46,027 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975390500]
[2019-11-06 19:05:46,027 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-11-06 19:05:46,028 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:05:46,028 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-11-06 19:05:46,028 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2019-11-06 19:05:46,028 INFO  L87              Difference]: Start difference. First operand 908 states and 1368 transitions. Second operand 9 states.
[2019-11-06 19:05:47,852 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:05:47,853 INFO  L93              Difference]: Finished difference Result 2764 states and 4664 transitions.
[2019-11-06 19:05:47,853 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2019-11-06 19:05:47,853 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 119
[2019-11-06 19:05:47,854 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:05:47,871 INFO  L225             Difference]: With dead ends: 2764
[2019-11-06 19:05:47,872 INFO  L226             Difference]: Without dead ends: 1862
[2019-11-06 19:05:47,876 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240
[2019-11-06 19:05:47,879 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1862 states.
[2019-11-06 19:05:47,973 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1862 to 1534.
[2019-11-06 19:05:47,974 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1534 states.
[2019-11-06 19:05:47,985 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1534 states to 1534 states and 2339 transitions.
[2019-11-06 19:05:47,985 INFO  L78                 Accepts]: Start accepts. Automaton has 1534 states and 2339 transitions. Word has length 119
[2019-11-06 19:05:47,986 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:05:47,987 INFO  L462      AbstractCegarLoop]: Abstraction has 1534 states and 2339 transitions.
[2019-11-06 19:05:47,987 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2019-11-06 19:05:47,987 INFO  L276                IsEmpty]: Start isEmpty. Operand 1534 states and 2339 transitions.
[2019-11-06 19:05:47,993 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 144
[2019-11-06 19:05:47,994 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:05:47,994 INFO  L410         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:05:47,994 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:05:47,995 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:05:47,995 INFO  L82        PathProgramCache]: Analyzing trace with hash -457664942, now seen corresponding path program 1 times
[2019-11-06 19:05:47,995 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:05:47,995 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240889762]
[2019-11-06 19:05:47,995 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:05:48,033 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:05:48,129 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:05:48,168 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:05:48,341 INFO  L134       CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 19:05:48,342 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240889762]
[2019-11-06 19:05:48,342 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 19:05:48,343 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2019-11-06 19:05:48,343 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442213300]
[2019-11-06 19:05:48,345 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-11-06 19:05:48,346 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:05:48,346 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-11-06 19:05:48,346 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2019-11-06 19:05:48,347 INFO  L87              Difference]: Start difference. First operand 1534 states and 2339 transitions. Second operand 9 states.
[2019-11-06 19:05:49,651 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:05:49,651 INFO  L93              Difference]: Finished difference Result 3853 states and 6206 transitions.
[2019-11-06 19:05:49,651 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2019-11-06 19:05:49,652 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 143
[2019-11-06 19:05:49,655 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:05:49,671 INFO  L225             Difference]: With dead ends: 3853
[2019-11-06 19:05:49,672 INFO  L226             Difference]: Without dead ends: 2325
[2019-11-06 19:05:49,679 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182
[2019-11-06 19:05:49,682 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2325 states.
[2019-11-06 19:05:49,758 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2325 to 2124.
[2019-11-06 19:05:49,759 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2124 states.
[2019-11-06 19:05:49,767 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2124 states to 2124 states and 2907 transitions.
[2019-11-06 19:05:49,768 INFO  L78                 Accepts]: Start accepts. Automaton has 2124 states and 2907 transitions. Word has length 143
[2019-11-06 19:05:49,768 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:05:49,768 INFO  L462      AbstractCegarLoop]: Abstraction has 2124 states and 2907 transitions.
[2019-11-06 19:05:49,768 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2019-11-06 19:05:49,769 INFO  L276                IsEmpty]: Start isEmpty. Operand 2124 states and 2907 transitions.
[2019-11-06 19:05:49,772 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 183
[2019-11-06 19:05:49,772 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:05:49,772 INFO  L410         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:05:49,773 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:05:49,773 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:05:49,773 INFO  L82        PathProgramCache]: Analyzing trace with hash -1615029563, now seen corresponding path program 1 times
[2019-11-06 19:05:49,773 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:05:49,774 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382109365]
[2019-11-06 19:05:49,774 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:05:49,803 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:05:49,870 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:05:49,894 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:05:49,936 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:05:50,065 INFO  L134       CoverageAnalysis]: Checked inductivity of 107 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-11-06 19:05:50,066 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382109365]
[2019-11-06 19:05:50,066 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609120142]
[2019-11-06 19:05:50,067 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:05:50,159 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:05:50,162 INFO  L256         TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-11-06 19:05:50,173 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-11-06 19:05:50,276 INFO  L134       CoverageAnalysis]: Checked inductivity of 107 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 19:05:50,277 INFO  L218   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-11-06 19:05:50,277 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12
[2019-11-06 19:05:50,277 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453210175]
[2019-11-06 19:05:50,278 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 12 states
[2019-11-06 19:05:50,278 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:05:50,278 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2019-11-06 19:05:50,279 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132
[2019-11-06 19:05:50,279 INFO  L87              Difference]: Start difference. First operand 2124 states and 2907 transitions. Second operand 12 states.
[2019-11-06 19:05:54,252 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:05:54,252 INFO  L93              Difference]: Finished difference Result 5883 states and 8396 transitions.
[2019-11-06 19:05:54,253 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. 
[2019-11-06 19:05:54,253 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states. Word has length 182
[2019-11-06 19:05:54,253 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:05:54,273 INFO  L225             Difference]: With dead ends: 5883
[2019-11-06 19:05:54,273 INFO  L226             Difference]: Without dead ends: 3620
[2019-11-06 19:05:54,282 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=355, Invalid=977, Unknown=0, NotChecked=0, Total=1332
[2019-11-06 19:05:54,286 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3620 states.
[2019-11-06 19:05:54,395 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3620 to 2863.
[2019-11-06 19:05:54,396 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2863 states.
[2019-11-06 19:05:54,414 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2863 states to 2863 states and 3740 transitions.
[2019-11-06 19:05:54,415 INFO  L78                 Accepts]: Start accepts. Automaton has 2863 states and 3740 transitions. Word has length 182
[2019-11-06 19:05:54,415 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:05:54,415 INFO  L462      AbstractCegarLoop]: Abstraction has 2863 states and 3740 transitions.
[2019-11-06 19:05:54,416 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 12 states.
[2019-11-06 19:05:54,416 INFO  L276                IsEmpty]: Start isEmpty. Operand 2863 states and 3740 transitions.
[2019-11-06 19:05:54,420 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 197
[2019-11-06 19:05:54,420 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:05:54,420 INFO  L410         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:05:54,626 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:05:54,626 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:05:54,626 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:05:54,626 INFO  L82        PathProgramCache]: Analyzing trace with hash 799619137, now seen corresponding path program 1 times
[2019-11-06 19:05:54,627 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:05:54,627 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883811191]
[2019-11-06 19:05:54,627 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:05:54,682 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:05:54,741 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:05:54,761 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:05:54,863 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:05:54,916 INFO  L134       CoverageAnalysis]: Checked inductivity of 105 backedges. 28 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2019-11-06 19:05:54,917 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883811191]
[2019-11-06 19:05:54,917 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115654302]
[2019-11-06 19:05:54,917 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:05:55,022 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:05:55,024 INFO  L256         TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 11 conjunts are in the unsatisfiable core
[2019-11-06 19:05:55,048 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-11-06 19:05:55,147 INFO  L134       CoverageAnalysis]: Checked inductivity of 105 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2019-11-06 19:05:55,148 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-06 19:05:55,148 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8
[2019-11-06 19:05:55,149 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149654478]
[2019-11-06 19:05:55,154 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 19:05:55,155 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:05:55,155 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 19:05:55,155 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2019-11-06 19:05:55,156 INFO  L87              Difference]: Start difference. First operand 2863 states and 3740 transitions. Second operand 5 states.
[2019-11-06 19:05:56,206 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:05:56,206 INFO  L93              Difference]: Finished difference Result 5881 states and 7688 transitions.
[2019-11-06 19:05:56,207 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-11-06 19:05:56,207 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 196
[2019-11-06 19:05:56,208 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:05:56,224 INFO  L225             Difference]: With dead ends: 5881
[2019-11-06 19:05:56,224 INFO  L226             Difference]: Without dead ends: 3024
[2019-11-06 19:05:56,233 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 198 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90
[2019-11-06 19:05:56,237 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3024 states.
[2019-11-06 19:05:56,314 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3024 to 2873.
[2019-11-06 19:05:56,314 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2873 states.
[2019-11-06 19:05:56,321 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 3762 transitions.
[2019-11-06 19:05:56,321 INFO  L78                 Accepts]: Start accepts. Automaton has 2873 states and 3762 transitions. Word has length 196
[2019-11-06 19:05:56,322 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:05:56,322 INFO  L462      AbstractCegarLoop]: Abstraction has 2873 states and 3762 transitions.
[2019-11-06 19:05:56,322 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 19:05:56,322 INFO  L276                IsEmpty]: Start isEmpty. Operand 2873 states and 3762 transitions.
[2019-11-06 19:05:56,331 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 267
[2019-11-06 19:05:56,331 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:05:56,331 INFO  L410         BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:05:56,535 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:05:56,535 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:05:56,535 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:05:56,536 INFO  L82        PathProgramCache]: Analyzing trace with hash 1679886725, now seen corresponding path program 1 times
[2019-11-06 19:05:56,536 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:05:56,537 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750900381]
[2019-11-06 19:05:56,537 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:05:56,605 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:05:56,680 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:05:56,700 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:05:56,759 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:05:56,939 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:05:57,142 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 51 proven. 201 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2019-11-06 19:05:57,142 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750900381]
[2019-11-06 19:05:57,143 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560892560]
[2019-11-06 19:05:57,143 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:05:57,247 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:05:57,249 INFO  L256         TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-11-06 19:05:57,261 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-11-06 19:05:57,286 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-11-06 19:05:57,335 INFO  L134       CoverageAnalysis]: Checked inductivity of 259 backedges. 242 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2019-11-06 19:05:57,335 INFO  L218   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-11-06 19:05:57,335 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5] total 15
[2019-11-06 19:05:57,336 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382160463]
[2019-11-06 19:05:57,337 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 15 states
[2019-11-06 19:05:57,337 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:05:57,337 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2019-11-06 19:05:57,337 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210
[2019-11-06 19:05:57,338 INFO  L87              Difference]: Start difference. First operand 2873 states and 3762 transitions. Second operand 15 states.
[2019-11-06 19:06:02,383 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:06:02,383 INFO  L93              Difference]: Finished difference Result 5834 states and 8064 transitions.
[2019-11-06 19:06:02,383 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. 
[2019-11-06 19:06:02,384 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 266
[2019-11-06 19:06:02,384 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:06:02,400 INFO  L225             Difference]: With dead ends: 5834
[2019-11-06 19:06:02,400 INFO  L226             Difference]: Without dead ends: 3110
[2019-11-06 19:06:02,410 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 306 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 811 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=548, Invalid=2314, Unknown=0, NotChecked=0, Total=2862
[2019-11-06 19:06:02,413 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3110 states.
[2019-11-06 19:06:02,496 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3110 to 3028.
[2019-11-06 19:06:02,496 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3028 states.
[2019-11-06 19:06:02,503 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3028 states to 3028 states and 3712 transitions.
[2019-11-06 19:06:02,503 INFO  L78                 Accepts]: Start accepts. Automaton has 3028 states and 3712 transitions. Word has length 266
[2019-11-06 19:06:02,504 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:06:02,504 INFO  L462      AbstractCegarLoop]: Abstraction has 3028 states and 3712 transitions.
[2019-11-06 19:06:02,504 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2019-11-06 19:06:02,504 INFO  L276                IsEmpty]: Start isEmpty. Operand 3028 states and 3712 transitions.
[2019-11-06 19:06:02,513 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 312
[2019-11-06 19:06:02,513 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:06:02,513 INFO  L410         BasicCegarLoop]: trace histogram [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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:06:02,716 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:06:02,717 INFO  L410      AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:06:02,718 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:06:02,718 INFO  L82        PathProgramCache]: Analyzing trace with hash -105495466, now seen corresponding path program 1 times
[2019-11-06 19:06:02,719 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:06:02,719 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698085506]
[2019-11-06 19:06:02,719 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:06:02,766 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:06:02,865 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:06:02,898 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:06:02,967 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:06:03,108 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:06:03,364 INFO  L134       CoverageAnalysis]: Checked inductivity of 294 backedges. 49 proven. 238 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2019-11-06 19:06:03,364 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698085506]
[2019-11-06 19:06:03,365 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150305425]
[2019-11-06 19:06:03,365 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:06:03,493 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:06:03,495 INFO  L256         TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 12 conjunts are in the unsatisfiable core
[2019-11-06 19:06:03,500 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-11-06 19:06:03,562 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-11-06 19:06:03,563 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-11-06 19:06:03,564 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-11-06 19:06:03,566 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-11-06 19:06:03,567 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-11-06 19:06:03,568 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-11-06 19:06:03,568 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-11-06 19:06:03,570 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-11-06 19:06:15,838 WARN  L191               SmtUtils]: Spent 12.20 s on a formula simplification. DAG size of input: 49 DAG size of output: 36
[2019-11-06 19:06:15,899 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 3 terms
[2019-11-06 19:06:15,999 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-11-06 19:06:16,130 INFO  L134       CoverageAnalysis]: Checked inductivity of 294 backedges. 277 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2019-11-06 19:06:16,130 INFO  L218   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-11-06 19:06:16,131 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 19
[2019-11-06 19:06:16,131 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853382926]
[2019-11-06 19:06:16,132 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 19 states
[2019-11-06 19:06:16,132 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:06:16,132 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2019-11-06 19:06:16,132 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342
[2019-11-06 19:06:16,133 INFO  L87              Difference]: Start difference. First operand 3028 states and 3712 transitions. Second operand 19 states.