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/Problem15_label28.c


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This is Ultimate 0.1.24-13a467a-m
[2019-10-14 22:02:55,815 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2019-10-14 22:02:55,895 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
[2019-10-14 22:02:55,930 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-14 22:02:55,930 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-14 22:02:55,931 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-14 22:02:55,931 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-14 22:02:55,932 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-14 22:02:55,932 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-14 22:02:55,932 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-14 22:02:55,932 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-14 22:02:55,932 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-14 22:02:55,933 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-14 22:02:55,933 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-14 22:02:55,933 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-14 22:02:55,933 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-14 22:02:55,933 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-14 22:02:55,933 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-14 22:02:55,934 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-14 22:02:55,934 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-14 22:02:55,936 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-14 22:02:55,936 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-14 22:02:55,936 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-14 22:02:55,936 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-14 22:02:55,936 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-14 22:02:55,937 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-14 22:02:55,937 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-14 22:02:55,937 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-14 22:02:55,937 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-14 22:02:55,937 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-14 22:02:55,937 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-14 22:02:55,938 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-10-14 22:02:56,229 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-14 22:02:56,249 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-14 22:02:56,252 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-14 22:02:56,254 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-14 22:02:56,254 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-14 22:02:56,255 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label28.c
[2019-10-14 22:02:56,328 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f84f67156/4d1ba2a61bd44150baefd3a1a1d88a7b/FLAG9f4f5b8d3
[2019-10-14 22:02:56,950 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-14 22:02:56,951 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label28.c
[2019-10-14 22:02:56,976 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f84f67156/4d1ba2a61bd44150baefd3a1a1d88a7b/FLAG9f4f5b8d3
[2019-10-14 22:02:57,143 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f84f67156/4d1ba2a61bd44150baefd3a1a1d88a7b
[2019-10-14 22:02:57,153 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-14 22:02:57,154 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-14 22:02:57,159 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-14 22:02:57,159 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-14 22:02:57,163 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-14 22:02:57,163 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:02:57" (1/1) ...
[2019-10-14 22:02:57,166 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b536ee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:57, skipping insertion in model container
[2019-10-14 22:02:57,167 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:02:57" (1/1) ...
[2019-10-14 22:02:57,175 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-14 22:02:57,263 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-14 22:02:58,161 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-14 22:02:58,175 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-14 22:02:58,456 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-14 22:02:58,481 INFO  L192         MainTranslator]: Completed translation
[2019-10-14 22:02:58,482 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:58 WrapperNode
[2019-10-14 22:02:58,483 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-14 22:02:58,484 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-14 22:02:58,484 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-14 22:02:58,484 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-14 22:02:58,503 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:58" (1/1) ...
[2019-10-14 22:02:58,504 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:58" (1/1) ...
[2019-10-14 22:02:58,551 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:58" (1/1) ...
[2019-10-14 22:02:58,551 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:58" (1/1) ...
[2019-10-14 22:02:58,635 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:58" (1/1) ...
[2019-10-14 22:02:58,664 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:58" (1/1) ...
[2019-10-14 22:02:58,686 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:58" (1/1) ...
[2019-10-14 22:02:58,706 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-14 22:02:58,707 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-14 22:02:58,707 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-14 22:02:58,707 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-14 22:02:58,708 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:58" (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
[2019-10-14 22:02:58,774 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-14 22:02:58,775 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-14 22:02:58,775 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-10-14 22:02:58,775 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2019-10-14 22:02:58,776 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-14 22:02:58,776 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-10-14 22:02:58,777 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2019-10-14 22:02:58,777 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-14 22:02:58,778 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-14 22:02:58,778 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-10-14 22:02:58,778 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-14 22:02:58,779 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-14 22:02:58,779 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-14 22:03:02,657 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-14 22:03:02,658 INFO  L284             CfgBuilder]: Removed 1 assume(true) statements.
[2019-10-14 22:03:02,662 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:03:02 BoogieIcfgContainer
[2019-10-14 22:03:02,662 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-14 22:03:02,663 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-14 22:03:02,664 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-14 22:03:02,667 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-14 22:03:02,667 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:02:57" (1/3) ...
[2019-10-14 22:03:02,668 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c63b6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:03:02, skipping insertion in model container
[2019-10-14 22:03:02,668 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:02:58" (2/3) ...
[2019-10-14 22:03:02,669 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c63b6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:03:02, skipping insertion in model container
[2019-10-14 22:03:02,669 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:03:02" (3/3) ...
[2019-10-14 22:03:02,677 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem15_label28.c
[2019-10-14 22:03:02,688 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-14 22:03:02,698 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-14 22:03:02,709 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-14 22:03:02,740 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-14 22:03:02,741 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-14 22:03:02,741 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-14 22:03:02,741 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-14 22:03:02,741 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-14 22:03:02,741 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-14 22:03:02,741 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-14 22:03:02,742 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-14 22:03:02,770 INFO  L276                IsEmpty]: Start isEmpty. Operand 437 states.
[2019-10-14 22:03:02,779 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2019-10-14 22:03:02,779 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 22:03:02,780 INFO  L380         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 22:03:02,782 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 22:03:02,787 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 22:03:02,788 INFO  L82        PathProgramCache]: Analyzing trace with hash -1729511136, now seen corresponding path program 1 times
[2019-10-14 22:03:02,796 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 22:03:02,796 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125773003]
[2019-10-14 22:03:02,797 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:03:02,797 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:03:02,797 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 22:03:02,916 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:03:03,149 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:03:03,184 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 22:03:03,185 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125773003]
[2019-10-14 22:03:03,186 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 22:03:03,186 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-14 22:03:03,187 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674624096]
[2019-10-14 22:03:03,192 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-14 22:03:03,192 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 22:03:03,206 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-14 22:03:03,206 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-10-14 22:03:03,209 INFO  L87              Difference]: Start difference. First operand 437 states. Second operand 5 states.
[2019-10-14 22:03:08,817 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 22:03:08,818 INFO  L93              Difference]: Finished difference Result 1529 states and 2803 transitions.
[2019-10-14 22:03:08,818 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-14 22:03:08,820 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 38
[2019-10-14 22:03:08,820 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 22:03:08,846 INFO  L225             Difference]: With dead ends: 1529
[2019-10-14 22:03:08,846 INFO  L226             Difference]: Without dead ends: 1024
[2019-10-14 22:03:08,860 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2019-10-14 22:03:08,876 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1024 states.
[2019-10-14 22:03:08,995 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1016.
[2019-10-14 22:03:08,997 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1016 states.
[2019-10-14 22:03:09,002 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1541 transitions.
[2019-10-14 22:03:09,006 INFO  L78                 Accepts]: Start accepts. Automaton has 1016 states and 1541 transitions. Word has length 38
[2019-10-14 22:03:09,006 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 22:03:09,006 INFO  L462      AbstractCegarLoop]: Abstraction has 1016 states and 1541 transitions.
[2019-10-14 22:03:09,007 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-14 22:03:09,007 INFO  L276                IsEmpty]: Start isEmpty. Operand 1016 states and 1541 transitions.
[2019-10-14 22:03:09,016 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 162
[2019-10-14 22:03:09,016 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 22:03:09,017 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 22:03:09,017 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 22:03:09,017 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 22:03:09,018 INFO  L82        PathProgramCache]: Analyzing trace with hash 625871070, now seen corresponding path program 1 times
[2019-10-14 22:03:09,018 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 22:03:09,018 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340636906]
[2019-10-14 22:03:09,018 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:03:09,019 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:03:09,019 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 22:03:09,100 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:03:09,195 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:03:09,263 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:03:09,511 INFO  L134       CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 22:03:09,512 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340636906]
[2019-10-14 22:03:09,512 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 22:03:09,512 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2019-10-14 22:03:09,513 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238400439]
[2019-10-14 22:03:09,515 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 8 states
[2019-10-14 22:03:09,515 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 22:03:09,515 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2019-10-14 22:03:09,515 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2019-10-14 22:03:09,516 INFO  L87              Difference]: Start difference. First operand 1016 states and 1541 transitions. Second operand 8 states.
[2019-10-14 22:03:17,191 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 22:03:17,191 INFO  L93              Difference]: Finished difference Result 3994 states and 6395 transitions.
[2019-10-14 22:03:17,192 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2019-10-14 22:03:17,192 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 161
[2019-10-14 22:03:17,193 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 22:03:17,220 INFO  L225             Difference]: With dead ends: 3994
[2019-10-14 22:03:17,220 INFO  L226             Difference]: Without dead ends: 2984
[2019-10-14 22:03:17,226 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182
[2019-10-14 22:03:17,230 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2984 states.
[2019-10-14 22:03:17,329 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2984 to 2934.
[2019-10-14 22:03:17,329 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2934 states.
[2019-10-14 22:03:17,343 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2934 states to 2934 states and 3826 transitions.
[2019-10-14 22:03:17,344 INFO  L78                 Accepts]: Start accepts. Automaton has 2934 states and 3826 transitions. Word has length 161
[2019-10-14 22:03:17,344 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 22:03:17,345 INFO  L462      AbstractCegarLoop]: Abstraction has 2934 states and 3826 transitions.
[2019-10-14 22:03:17,345 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2019-10-14 22:03:17,345 INFO  L276                IsEmpty]: Start isEmpty. Operand 2934 states and 3826 transitions.
[2019-10-14 22:03:17,359 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 257
[2019-10-14 22:03:17,359 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 22:03:17,360 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 22:03:17,360 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 22:03:17,360 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 22:03:17,360 INFO  L82        PathProgramCache]: Analyzing trace with hash 420019932, now seen corresponding path program 1 times
[2019-10-14 22:03:17,361 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 22:03:17,361 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568988776]
[2019-10-14 22:03:17,364 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:03:17,365 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 22:03:17,365 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 22:03:17,439 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:03:17,548 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:03:17,594 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:03:17,665 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:03:17,924 INFO  L134       CoverageAnalysis]: Checked inductivity of 157 backedges. 63 proven. 89 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2019-10-14 22:03:17,924 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568988776]
[2019-10-14 22:03:17,924 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134134040]
[2019-10-14 22:03:17,925 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
[2019-10-14 22:03:18,021 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 22:03:18,024 INFO  L256         TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 9 conjunts are in the unsatisfiable core
[2019-10-14 22:03:18,037 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-14 22:03:18,213 INFO  L134       CoverageAnalysis]: Checked inductivity of 157 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked.
[2019-10-14 22:03:18,213 INFO  L223   tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-10-14 22:03:18,214 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2019-10-14 22:03:18,214 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626426834]
[2019-10-14 22:03:18,216 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 13 states
[2019-10-14 22:03:18,216 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 22:03:18,216 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2019-10-14 22:03:18,216 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156
[2019-10-14 22:03:18,217 INFO  L87              Difference]: Start difference. First operand 2934 states and 3826 transitions. Second operand 13 states.