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/Problem12_label46.c


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This is Ultimate 0.1.24-f4eb214f-m
[2019-10-13 18:01:37,130 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-10-13 18:01:37,133 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
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[2019-10-13 18:01:37,182 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 18:01:37,196 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-13 18:01:37,196 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-13 18:01:37,198 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-13 18:01:37,198 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-13 18:01:37,198 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-13 18:01:37,198 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-13 18:01:37,199 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-13 18:01:37,199 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-13 18:01:37,199 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-13 18:01:37,199 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-13 18:01:37,199 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-13 18:01:37,199 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-13 18:01:37,200 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-13 18:01:37,200 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-13 18:01:37,200 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-13 18:01:37,200 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-13 18:01:37,201 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-13 18:01:37,201 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-13 18:01:37,201 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-13 18:01:37,201 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-13 18:01:37,201 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-13 18:01:37,202 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-13 18:01:37,202 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-13 18:01:37,202 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-13 18:01:37,202 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-13 18:01:37,202 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-13 18:01:37,203 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-13 18:01:37,203 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-13 18:01:37,203 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-10-13 18:01:37,514 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-13 18:01:37,532 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-13 18:01:37,536 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-13 18:01:37,538 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-13 18:01:37,538 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-13 18:01:37,539 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label46.c
[2019-10-13 18:01:37,622 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/865146c7f/d00c625b873749f497c56d81a34d5638/FLAG7c0c506e6
[2019-10-13 18:01:38,470 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-13 18:01:38,471 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label46.c
[2019-10-13 18:01:38,508 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/865146c7f/d00c625b873749f497c56d81a34d5638/FLAG7c0c506e6
[2019-10-13 18:01:38,980 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/865146c7f/d00c625b873749f497c56d81a34d5638
[2019-10-13 18:01:38,990 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-13 18:01:38,992 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-13 18:01:38,995 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-13 18:01:38,995 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-13 18:01:38,999 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-13 18:01:39,000 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:01:38" (1/1) ...
[2019-10-13 18:01:39,003 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19511e2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:39, skipping insertion in model container
[2019-10-13 18:01:39,003 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:01:38" (1/1) ...
[2019-10-13 18:01:39,012 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-13 18:01:39,169 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-13 18:01:40,627 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 18:01:40,639 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-13 18:01:41,257 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 18:01:41,292 INFO  L192         MainTranslator]: Completed translation
[2019-10-13 18:01:41,293 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:41 WrapperNode
[2019-10-13 18:01:41,293 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-13 18:01:41,295 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-13 18:01:41,295 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-13 18:01:41,295 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-13 18:01:41,317 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:41" (1/1) ...
[2019-10-13 18:01:41,317 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:41" (1/1) ...
[2019-10-13 18:01:41,403 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:41" (1/1) ...
[2019-10-13 18:01:41,405 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:41" (1/1) ...
[2019-10-13 18:01:41,552 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:41" (1/1) ...
[2019-10-13 18:01:41,610 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:41" (1/1) ...
[2019-10-13 18:01:41,676 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:41" (1/1) ...
[2019-10-13 18:01:41,748 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-13 18:01:41,749 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-13 18:01:41,749 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-13 18:01:41,750 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-13 18:01:41,751 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:41" (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 18:01:41,852 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-13 18:01:41,852 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-13 18:01:41,853 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-10-13 18:01:41,854 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2019-10-13 18:01:41,854 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2019-10-13 18:01:41,855 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2019-10-13 18:01:41,855 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-13 18:01:41,855 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-10-13 18:01:41,855 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2019-10-13 18:01:41,856 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2019-10-13 18:01:41,857 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2019-10-13 18:01:41,858 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-13 18:01:41,858 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-13 18:01:41,859 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-10-13 18:01:41,859 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-13 18:01:41,860 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-13 18:01:41,861 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-13 18:01:46,879 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-13 18:01:46,880 INFO  L284             CfgBuilder]: Removed 1 assume(true) statements.
[2019-10-13 18:01:46,883 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:01:46 BoogieIcfgContainer
[2019-10-13 18:01:46,884 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-13 18:01:46,885 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-13 18:01:46,885 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-13 18:01:46,888 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-13 18:01:46,888 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:01:38" (1/3) ...
[2019-10-13 18:01:46,889 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2efab492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:01:46, skipping insertion in model container
[2019-10-13 18:01:46,889 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:41" (2/3) ...
[2019-10-13 18:01:46,890 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2efab492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:01:46, skipping insertion in model container
[2019-10-13 18:01:46,890 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:01:46" (3/3) ...
[2019-10-13 18:01:46,892 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem12_label46.c
[2019-10-13 18:01:46,903 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-13 18:01:46,912 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-13 18:01:46,924 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-13 18:01:46,959 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-13 18:01:46,960 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-13 18:01:46,960 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-13 18:01:46,960 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-13 18:01:46,960 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-13 18:01:46,960 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-13 18:01:46,960 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-13 18:01:46,961 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-13 18:01:46,996 INFO  L276                IsEmpty]: Start isEmpty. Operand 839 states.
[2019-10-13 18:01:47,005 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2019-10-13 18:01:47,006 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:01:47,007 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, 1, 1, 1]
[2019-10-13 18:01:47,009 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:01:47,015 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:01:47,016 INFO  L82        PathProgramCache]: Analyzing trace with hash 415024674, now seen corresponding path program 1 times
[2019-10-13 18:01:47,025 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:01:47,025 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499604409]
[2019-10-13 18:01:47,025 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:01:47,026 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:01:47,026 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:01:47,175 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:01:47,431 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:01:47,460 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 18:01:47,460 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499604409]
[2019-10-13 18:01:47,461 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 18:01:47,462 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-13 18:01:47,462 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879117409]
[2019-10-13 18:01:47,467 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 18:01:47,468 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:01:47,482 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 18:01:47,483 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-10-13 18:01:47,485 INFO  L87              Difference]: Start difference. First operand 839 states. Second operand 5 states.
[2019-10-13 18:01:59,928 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:01:59,928 INFO  L93              Difference]: Finished difference Result 3269 states and 6302 transitions.
[2019-10-13 18:01:59,929 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-13 18:01:59,930 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 67
[2019-10-13 18:01:59,932 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:01:59,970 INFO  L225             Difference]: With dead ends: 3269
[2019-10-13 18:01:59,971 INFO  L226             Difference]: Without dead ends: 2346
[2019-10-13 18:01:59,983 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 18:02:00,007 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2346 states.
[2019-10-13 18:02:00,179 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 2342.
[2019-10-13 18:02:00,180 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2342 states.
[2019-10-13 18:02:00,195 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 3858 transitions.
[2019-10-13 18:02:00,197 INFO  L78                 Accepts]: Start accepts. Automaton has 2342 states and 3858 transitions. Word has length 67
[2019-10-13 18:02:00,199 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:02:00,199 INFO  L462      AbstractCegarLoop]: Abstraction has 2342 states and 3858 transitions.
[2019-10-13 18:02:00,200 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 18:02:00,200 INFO  L276                IsEmpty]: Start isEmpty. Operand 2342 states and 3858 transitions.
[2019-10-13 18:02:00,221 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 167
[2019-10-13 18:02:00,223 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:02:00,224 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, 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]
[2019-10-13 18:02:00,224 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:02:00,225 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:02:00,226 INFO  L82        PathProgramCache]: Analyzing trace with hash 295469771, now seen corresponding path program 1 times
[2019-10-13 18:02:00,226 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:02:00,227 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353694657]
[2019-10-13 18:02:00,228 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:02:00,228 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:02:00,228 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:02:00,317 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:02:00,435 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:02:00,487 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:02:00,676 INFO  L134       CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 18:02:00,677 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353694657]
[2019-10-13 18:02:00,678 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 18:02:00,678 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2019-10-13 18:02:00,679 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393686933]
[2019-10-13 18:02:00,684 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-10-13 18:02:00,684 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:02:00,684 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-10-13 18:02:00,685 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2019-10-13 18:02:00,685 INFO  L87              Difference]: Start difference. First operand 2342 states and 3858 transitions. Second operand 9 states.
[2019-10-13 18:02:13,099 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:02:13,099 INFO  L93              Difference]: Finished difference Result 9505 states and 16081 transitions.
[2019-10-13 18:02:13,099 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2019-10-13 18:02:13,100 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 166
[2019-10-13 18:02:13,100 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:02:13,151 INFO  L225             Difference]: With dead ends: 9505
[2019-10-13 18:02:13,151 INFO  L226             Difference]: Without dead ends: 7169
[2019-10-13 18:02:13,162 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272
[2019-10-13 18:02:13,173 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7169 states.
[2019-10-13 18:02:13,410 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7169 to 7153.
[2019-10-13 18:02:13,410 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 7153 states.
[2019-10-13 18:02:13,443 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7153 states to 7153 states and 10808 transitions.
[2019-10-13 18:02:13,444 INFO  L78                 Accepts]: Start accepts. Automaton has 7153 states and 10808 transitions. Word has length 166
[2019-10-13 18:02:13,448 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:02:13,449 INFO  L462      AbstractCegarLoop]: Abstraction has 7153 states and 10808 transitions.
[2019-10-13 18:02:13,449 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2019-10-13 18:02:13,449 INFO  L276                IsEmpty]: Start isEmpty. Operand 7153 states and 10808 transitions.
[2019-10-13 18:02:13,457 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 220
[2019-10-13 18:02:13,458 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:02:13,458 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, 3, 3, 3, 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]
[2019-10-13 18:02:13,459 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:02:13,459 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:02:13,459 INFO  L82        PathProgramCache]: Analyzing trace with hash 1449231638, now seen corresponding path program 1 times
[2019-10-13 18:02:13,459 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:02:13,460 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458843126]
[2019-10-13 18:02:13,460 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:02:13,461 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:02:13,461 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:02:13,536 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:02:13,643 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:02:13,697 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:02:13,772 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:02:13,837 INFO  L134       CoverageAnalysis]: Checked inductivity of 193 backedges. 120 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2019-10-13 18:02:13,838 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458843126]
[2019-10-13 18:02:13,842 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802760110]
[2019-10-13 18:02:13,843 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 18:02:13,964 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:02:13,967 INFO  L256         TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 6 conjunts are in the unsatisfiable core
[2019-10-13 18:02:13,996 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 18:02:14,148 INFO  L134       CoverageAnalysis]: Checked inductivity of 193 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked.
[2019-10-13 18:02:14,149 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-13 18:02:14,149 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9
[2019-10-13 18:02:14,150 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795719239]
[2019-10-13 18:02:14,152 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 18:02:14,153 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:02:14,153 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 18:02:14,153 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72
[2019-10-13 18:02:14,154 INFO  L87              Difference]: Start difference. First operand 7153 states and 10808 transitions. Second operand 5 states.