/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/Problem12_label30.c


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This is Ultimate 0.1.24-fb55353
[2019-11-06 19:11:17,869 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2019-11-06 19:11:17,918 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 19:11:17,932 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-11-06 19:11:17,932 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-11-06 19:11:17,933 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-11-06 19:11:17,933 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-11-06 19:11:17,934 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-11-06 19:11:17,934 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-11-06 19:11:17,934 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-11-06 19:11:17,934 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-11-06 19:11:17,934 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-11-06 19:11:17,935 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-11-06 19:11:17,935 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-11-06 19:11:17,935 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-11-06 19:11:17,935 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-11-06 19:11:17,935 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-11-06 19:11:17,936 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-11-06 19:11:17,936 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-11-06 19:11:17,936 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-11-06 19:11:17,936 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-11-06 19:11:17,936 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-11-06 19:11:17,937 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-11-06 19:11:17,937 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-11-06 19:11:17,937 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-06 19:11:17,937 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-11-06 19:11:17,937 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-11-06 19:11:17,938 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-11-06 19:11:17,938 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-11-06 19:11:17,938 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-11-06 19:11:17,938 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-11-06 19:11:17,938 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-11-06 19:11:18,223 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-11-06 19:11:18,241 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-11-06 19:11:18,246 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-11-06 19:11:18,247 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-11-06 19:11:18,248 INFO  L275        PluginConnector]: CDTParser initialized
[2019-11-06 19:11:18,248 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label30.c
[2019-11-06 19:11:18,323 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a14b1de8e/9d868b84dbae4c73a04a1d180ba94159/FLAG3f5fd4aef
[2019-11-06 19:11:19,068 INFO  L306              CDTParser]: Found 1 translation units.
[2019-11-06 19:11:19,069 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label30.c
[2019-11-06 19:11:19,094 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a14b1de8e/9d868b84dbae4c73a04a1d180ba94159/FLAG3f5fd4aef
[2019-11-06 19:11:19,172 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a14b1de8e/9d868b84dbae4c73a04a1d180ba94159
[2019-11-06 19:11:19,180 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-11-06 19:11:19,182 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-11-06 19:11:19,183 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-11-06 19:11:19,183 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-11-06 19:11:19,187 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-11-06 19:11:19,187 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:11:19" (1/1) ...
[2019-11-06 19:11:19,191 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23c4ff0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:19, skipping insertion in model container
[2019-11-06 19:11:19,191 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:11:19" (1/1) ...
[2019-11-06 19:11:19,199 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-11-06 19:11:19,360 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-11-06 19:11:20,891 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-06 19:11:20,897 INFO  L188         MainTranslator]: Completed pre-run
[2019-11-06 19:11:21,542 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-06 19:11:21,573 INFO  L192         MainTranslator]: Completed translation
[2019-11-06 19:11:21,574 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:21 WrapperNode
[2019-11-06 19:11:21,574 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-11-06 19:11:21,575 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-11-06 19:11:21,575 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-11-06 19:11:21,575 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-11-06 19:11:21,589 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:21" (1/1) ...
[2019-11-06 19:11:21,590 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:21" (1/1) ...
[2019-11-06 19:11:21,657 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:21" (1/1) ...
[2019-11-06 19:11:21,657 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:21" (1/1) ...
[2019-11-06 19:11:21,766 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:21" (1/1) ...
[2019-11-06 19:11:21,792 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:21" (1/1) ...
[2019-11-06 19:11:21,826 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:21" (1/1) ...
[2019-11-06 19:11:21,872 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-11-06 19:11:21,872 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-11-06 19:11:21,872 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-11-06 19:11:21,873 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-11-06 19:11:21,874 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:21" (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 19:11:21,947 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-11-06 19:11:21,948 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-11-06 19:11:21,948 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-11-06 19:11:21,948 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2019-11-06 19:11:21,948 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2019-11-06 19:11:21,949 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2019-11-06 19:11:21,949 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-11-06 19:11:21,949 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-11-06 19:11:21,949 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2019-11-06 19:11:21,949 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2019-11-06 19:11:21,949 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2019-11-06 19:11:21,950 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-11-06 19:11:21,950 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-11-06 19:11:21,950 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-11-06 19:11:21,950 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-11-06 19:11:21,950 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-11-06 19:11:21,951 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-11-06 19:11:26,721 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-11-06 19:11:26,722 INFO  L284             CfgBuilder]: Removed 1 assume(true) statements.
[2019-11-06 19:11:26,724 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:11:26 BoogieIcfgContainer
[2019-11-06 19:11:26,724 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-11-06 19:11:26,725 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-11-06 19:11:26,726 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-11-06 19:11:26,729 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-11-06 19:11:26,729 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:11:19" (1/3) ...
[2019-11-06 19:11:26,730 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4700361b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:11:26, skipping insertion in model container
[2019-11-06 19:11:26,731 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:11:21" (2/3) ...
[2019-11-06 19:11:26,731 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4700361b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:11:26, skipping insertion in model container
[2019-11-06 19:11:26,733 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:11:26" (3/3) ...
[2019-11-06 19:11:26,741 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem12_label30.c
[2019-11-06 19:11:26,753 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-11-06 19:11:26,764 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-11-06 19:11:26,775 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-11-06 19:11:26,810 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-11-06 19:11:26,810 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-11-06 19:11:26,811 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-11-06 19:11:26,811 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-11-06 19:11:26,811 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-11-06 19:11:26,811 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-11-06 19:11:26,811 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-11-06 19:11:26,811 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-11-06 19:11:26,846 INFO  L276                IsEmpty]: Start isEmpty. Operand 839 states.
[2019-11-06 19:11:26,853 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2019-11-06 19:11:26,853 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:11:26,855 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:11:26,856 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:11:26,862 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:11:26,863 INFO  L82        PathProgramCache]: Analyzing trace with hash -1416358702, now seen corresponding path program 1 times
[2019-11-06 19:11:26,873 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:11:26,873 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542826491]
[2019-11-06 19:11:26,873 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:11:27,007 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:11:27,200 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:11:27,222 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 19:11:27,223 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542826491]
[2019-11-06 19:11:27,226 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 19:11:27,226 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 19:11:27,228 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212925868]
[2019-11-06 19:11:27,236 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 19:11:27,236 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:11:27,250 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 19:11:27,251 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-11-06 19:11:27,253 INFO  L87              Difference]: Start difference. First operand 839 states. Second operand 5 states.
[2019-11-06 19:11:38,933 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:11:38,933 INFO  L93              Difference]: Finished difference Result 3269 states and 6302 transitions.
[2019-11-06 19:11:38,938 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-11-06 19:11:38,940 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 31
[2019-11-06 19:11:38,941 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:11:38,977 INFO  L225             Difference]: With dead ends: 3269
[2019-11-06 19:11:38,977 INFO  L226             Difference]: Without dead ends: 2346
[2019-11-06 19:11:38,988 INFO  L630         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
[2019-11-06 19:11:39,010 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2346 states.
[2019-11-06 19:11:39,129 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 2342.
[2019-11-06 19:11:39,130 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2342 states.
[2019-11-06 19:11:39,144 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 3696 transitions.
[2019-11-06 19:11:39,147 INFO  L78                 Accepts]: Start accepts. Automaton has 2342 states and 3696 transitions. Word has length 31
[2019-11-06 19:11:39,150 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:11:39,150 INFO  L462      AbstractCegarLoop]: Abstraction has 2342 states and 3696 transitions.
[2019-11-06 19:11:39,151 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 19:11:39,151 INFO  L276                IsEmpty]: Start isEmpty. Operand 2342 states and 3696 transitions.
[2019-11-06 19:11:39,159 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 112
[2019-11-06 19:11:39,159 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:11:39,160 INFO  L410         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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:11:39,160 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:11:39,161 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:11:39,162 INFO  L82        PathProgramCache]: Analyzing trace with hash 1680241966, now seen corresponding path program 1 times
[2019-11-06 19:11:39,162 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:11:39,163 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145055065]
[2019-11-06 19:11:39,163 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:11:39,236 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:11:39,348 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:11:39,402 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:11:39,610 INFO  L134       CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 19:11:39,610 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145055065]
[2019-11-06 19:11:39,610 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 19:11:39,611 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2019-11-06 19:11:39,611 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073013358]
[2019-11-06 19:11:39,614 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-11-06 19:11:39,615 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:11:39,616 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-11-06 19:11:39,616 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2019-11-06 19:11:39,616 INFO  L87              Difference]: Start difference. First operand 2342 states and 3696 transitions. Second operand 9 states.
[2019-11-06 19:11:52,933 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:11:52,933 INFO  L93              Difference]: Finished difference Result 9506 states and 15440 transitions.
[2019-11-06 19:11:52,933 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2019-11-06 19:11:52,934 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 111
[2019-11-06 19:11:52,934 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:11:52,977 INFO  L225             Difference]: With dead ends: 9506
[2019-11-06 19:11:52,977 INFO  L226             Difference]: Without dead ends: 7170
[2019-11-06 19:11:52,985 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272
[2019-11-06 19:11:52,993 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7170 states.
[2019-11-06 19:11:53,210 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7170 to 7144.
[2019-11-06 19:11:53,211 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 7144 states.
[2019-11-06 19:11:53,246 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7144 states to 7144 states and 10380 transitions.
[2019-11-06 19:11:53,246 INFO  L78                 Accepts]: Start accepts. Automaton has 7144 states and 10380 transitions. Word has length 111
[2019-11-06 19:11:53,248 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:11:53,248 INFO  L462      AbstractCegarLoop]: Abstraction has 7144 states and 10380 transitions.
[2019-11-06 19:11:53,248 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2019-11-06 19:11:53,248 INFO  L276                IsEmpty]: Start isEmpty. Operand 7144 states and 10380 transitions.
[2019-11-06 19:11:53,259 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 145
[2019-11-06 19:11:53,259 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:11:53,259 INFO  L410         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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:11:53,260 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:11:53,260 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:11:53,261 INFO  L82        PathProgramCache]: Analyzing trace with hash 1285051767, now seen corresponding path program 1 times
[2019-11-06 19:11:53,262 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:11:53,262 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107764803]
[2019-11-06 19:11:53,263 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:11:53,328 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:11:53,436 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:11:53,511 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:11:53,668 INFO  L134       CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 19:11:53,668 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107764803]
[2019-11-06 19:11:53,669 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 19:11:53,669 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2019-11-06 19:11:53,669 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758226377]
[2019-11-06 19:11:53,670 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-11-06 19:11:53,670 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:11:53,670 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-11-06 19:11:53,670 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2019-11-06 19:11:53,671 INFO  L87              Difference]: Start difference. First operand 7144 states and 10380 transitions. Second operand 9 states.