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_label33.c


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This is Ultimate 0.1.24-f4eb214f-m
[2019-10-13 18:01:31,778 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2019-10-13 18:01:31,829 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 18:01:31,845 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-13 18:01:31,846 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-13 18:01:31,847 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-13 18:01:31,847 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-13 18:01:31,847 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-13 18:01:31,848 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-13 18:01:31,848 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-13 18:01:31,848 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-13 18:01:31,848 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-13 18:01:31,848 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-13 18:01:31,848 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-13 18:01:31,849 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-13 18:01:31,849 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-13 18:01:31,849 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-13 18:01:31,849 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-13 18:01:31,850 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-13 18:01:31,850 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-13 18:01:31,850 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-13 18:01:31,850 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-13 18:01:31,850 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-13 18:01:31,851 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-13 18:01:31,851 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-13 18:01:31,851 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-13 18:01:31,851 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-13 18:01:31,851 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-13 18:01:31,852 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-13 18:01:31,852 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-13 18:01:31,852 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-13 18:01:31,852 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-10-13 18:01:32,135 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-13 18:01:32,157 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-13 18:01:32,160 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-13 18:01:32,162 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-13 18:01:32,162 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-13 18:01:32,163 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label33.c
[2019-10-13 18:01:32,242 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9876e51be/f170e0d3805e45cb80957c114dba668e/FLAG46b7036aa
[2019-10-13 18:01:33,022 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-13 18:01:33,023 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label33.c
[2019-10-13 18:01:33,063 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9876e51be/f170e0d3805e45cb80957c114dba668e/FLAG46b7036aa
[2019-10-13 18:01:33,575 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9876e51be/f170e0d3805e45cb80957c114dba668e
[2019-10-13 18:01:33,586 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-13 18:01:33,587 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-13 18:01:33,589 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-13 18:01:33,589 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-13 18:01:33,592 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-13 18:01:33,594 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:01:33" (1/1) ...
[2019-10-13 18:01:33,597 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6836b2f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:33, skipping insertion in model container
[2019-10-13 18:01:33,597 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:01:33" (1/1) ...
[2019-10-13 18:01:33,605 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-13 18:01:33,761 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-13 18:01:35,322 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 18:01:35,327 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-13 18:01:35,955 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 18:01:35,987 INFO  L192         MainTranslator]: Completed translation
[2019-10-13 18:01:35,987 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:35 WrapperNode
[2019-10-13 18:01:35,987 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-13 18:01:35,988 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-13 18:01:35,988 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-13 18:01:35,989 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-13 18:01:36,003 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:35" (1/1) ...
[2019-10-13 18:01:36,003 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:35" (1/1) ...
[2019-10-13 18:01:36,052 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:35" (1/1) ...
[2019-10-13 18:01:36,055 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:35" (1/1) ...
[2019-10-13 18:01:36,159 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:35" (1/1) ...
[2019-10-13 18:01:36,188 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:35" (1/1) ...
[2019-10-13 18:01:36,217 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:35" (1/1) ...
[2019-10-13 18:01:36,264 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-13 18:01:36,265 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-13 18:01:36,265 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-13 18:01:36,265 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-13 18:01:36,267 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:35" (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 18:01:36,347 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-13 18:01:36,348 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-13 18:01:36,348 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-10-13 18:01:36,348 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2019-10-13 18:01:36,348 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2019-10-13 18:01:36,349 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2019-10-13 18:01:36,349 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-13 18:01:36,349 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-10-13 18:01:36,350 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2019-10-13 18:01:36,351 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2019-10-13 18:01:36,351 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2019-10-13 18:01:36,351 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-13 18:01:36,353 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-13 18:01:36,353 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-10-13 18:01:36,354 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-13 18:01:36,355 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-13 18:01:36,356 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-13 18:01:41,603 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-13 18:01:41,604 INFO  L284             CfgBuilder]: Removed 1 assume(true) statements.
[2019-10-13 18:01:41,609 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:01:41 BoogieIcfgContainer
[2019-10-13 18:01:41,609 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-13 18:01:41,610 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-13 18:01:41,610 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-13 18:01:41,614 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-13 18:01:41,614 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:01:33" (1/3) ...
[2019-10-13 18:01:41,615 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@641165b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:01:41, skipping insertion in model container
[2019-10-13 18:01:41,615 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:01:35" (2/3) ...
[2019-10-13 18:01:41,616 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@641165b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:01:41, skipping insertion in model container
[2019-10-13 18:01:41,617 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:01:41" (3/3) ...
[2019-10-13 18:01:41,624 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem12_label33.c
[2019-10-13 18:01:41,636 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-13 18:01:41,646 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-13 18:01:41,657 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-13 18:01:41,699 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-13 18:01:41,699 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-13 18:01:41,699 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-13 18:01:41,699 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-13 18:01:41,699 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-13 18:01:41,699 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-13 18:01:41,700 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-13 18:01:41,700 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-13 18:01:41,741 INFO  L276                IsEmpty]: Start isEmpty. Operand 839 states.
[2019-10-13 18:01:41,751 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 56
[2019-10-13 18:01:41,752 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:01:41,753 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]
[2019-10-13 18:01:41,755 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:01:41,761 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:01:41,761 INFO  L82        PathProgramCache]: Analyzing trace with hash -1837034062, now seen corresponding path program 1 times
[2019-10-13 18:01:41,769 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:01:41,769 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206161399]
[2019-10-13 18:01:41,770 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:01:41,770 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:01:41,770 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:01:41,898 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:01:42,154 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:01:42,175 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 18:01:42,176 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206161399]
[2019-10-13 18:01:42,177 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 18:01:42,177 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-13 18:01:42,178 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75322097]
[2019-10-13 18:01:42,184 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 18:01:42,185 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:01:42,200 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 18:01:42,201 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-10-13 18:01:42,203 INFO  L87              Difference]: Start difference. First operand 839 states. Second operand 5 states.
[2019-10-13 18:01:54,875 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:01:54,875 INFO  L93              Difference]: Finished difference Result 3269 states and 6302 transitions.
[2019-10-13 18:01:54,876 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-13 18:01:54,877 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 55
[2019-10-13 18:01:54,878 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:01:54,916 INFO  L225             Difference]: With dead ends: 3269
[2019-10-13 18:01:54,916 INFO  L226             Difference]: Without dead ends: 2346
[2019-10-13 18:01:54,929 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 18:01:54,954 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2346 states.
[2019-10-13 18:01:55,080 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 2342.
[2019-10-13 18:01:55,081 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2342 states.
[2019-10-13 18:01:55,094 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 3858 transitions.
[2019-10-13 18:01:55,096 INFO  L78                 Accepts]: Start accepts. Automaton has 2342 states and 3858 transitions. Word has length 55
[2019-10-13 18:01:55,097 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:01:55,097 INFO  L462      AbstractCegarLoop]: Abstraction has 2342 states and 3858 transitions.
[2019-10-13 18:01:55,098 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 18:01:55,098 INFO  L276                IsEmpty]: Start isEmpty. Operand 2342 states and 3858 transitions.
[2019-10-13 18:01:55,105 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 155
[2019-10-13 18:01:55,105 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:01:55,105 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:55,106 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:01:55,106 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:01:55,106 INFO  L82        PathProgramCache]: Analyzing trace with hash -1114761445, now seen corresponding path program 1 times
[2019-10-13 18:01:55,106 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:01:55,107 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40082989]
[2019-10-13 18:01:55,107 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:01:55,107 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:01:55,107 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:01:55,157 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:01:55,274 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:01:55,344 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:01:55,604 INFO  L134       CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 18:01:55,605 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40082989]
[2019-10-13 18:01:55,605 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 18:01:55,605 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2019-10-13 18:01:55,605 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095221045]
[2019-10-13 18:01:55,610 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-10-13 18:01:55,610 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:01:55,611 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-10-13 18:01:55,611 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2019-10-13 18:01:55,612 INFO  L87              Difference]: Start difference. First operand 2342 states and 3858 transitions. Second operand 9 states.
[2019-10-13 18:02:09,674 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 18:02:09,674 INFO  L93              Difference]: Finished difference Result 9505 states and 16081 transitions.
[2019-10-13 18:02:09,675 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2019-10-13 18:02:09,675 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 154
[2019-10-13 18:02:09,676 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 18:02:09,722 INFO  L225             Difference]: With dead ends: 9505
[2019-10-13 18:02:09,722 INFO  L226             Difference]: Without dead ends: 7169
[2019-10-13 18:02:09,732 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 18:02:09,739 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7169 states.
[2019-10-13 18:02:09,957 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7169 to 7153.
[2019-10-13 18:02:09,957 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 7153 states.
[2019-10-13 18:02:09,990 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7153 states to 7153 states and 10809 transitions.
[2019-10-13 18:02:09,991 INFO  L78                 Accepts]: Start accepts. Automaton has 7153 states and 10809 transitions. Word has length 154
[2019-10-13 18:02:09,995 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 18:02:09,996 INFO  L462      AbstractCegarLoop]: Abstraction has 7153 states and 10809 transitions.
[2019-10-13 18:02:09,996 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2019-10-13 18:02:09,996 INFO  L276                IsEmpty]: Start isEmpty. Operand 7153 states and 10809 transitions.
[2019-10-13 18:02:10,013 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 205
[2019-10-13 18:02:10,014 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 18:02:10,014 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:02:10,016 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 18:02:10,016 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 18:02:10,016 INFO  L82        PathProgramCache]: Analyzing trace with hash -1950696993, now seen corresponding path program 1 times
[2019-10-13 18:02:10,016 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 18:02:10,017 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255727650]
[2019-10-13 18:02:10,018 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:02:10,018 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 18:02:10,018 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 18:02:10,095 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:02:10,223 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:02:10,270 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:02:10,356 INFO  L134       CoverageAnalysis]: Checked inductivity of 48 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 18:02:10,357 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255727650]
[2019-10-13 18:02:10,358 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807525921]
[2019-10-13 18:02:10,361 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 18:02:10,480 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 18:02:10,482 INFO  L256         TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-10-13 18:02:10,494 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 18:02:10,682 INFO  L134       CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 18:02:10,683 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-10-13 18:02:10,683 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2019-10-13 18:02:10,683 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55628290]
[2019-10-13 18:02:10,686 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-13 18:02:10,687 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 18:02:10,687 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-13 18:02:10,687 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2019-10-13 18:02:10,688 INFO  L87              Difference]: Start difference. First operand 7153 states and 10809 transitions. Second operand 3 states.