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/Problem17_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 21:46:28,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 21:46:28,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 21:46:28,221 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-07 21:46:28,230 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 21:46:28,231 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 21:46:28,232 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 21:46:28,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 21:46:28,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 21:46:28,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 21:46:28,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 21:46:28,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 21:46:28,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 21:46:28,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 21:46:28,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 21:46:28,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 21:46:28,246 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 21:46:28,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 21:46:28,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 21:46:28,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 21:46:28,257 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 [2019-09-07 21:46:28,282 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 21:46:28,283 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 21:46:28,284 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 21:46:28,284 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 21:46:28,285 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 21:46:28,285 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 21:46:28,285 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 21:46:28,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 21:46:28,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 21:46:28,286 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 21:46:28,286 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 21:46:28,286 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 21:46:28,286 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 21:46:28,286 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 21:46:28,287 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 21:46:28,287 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 21:46:28,287 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 21:46:28,287 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 21:46:28,287 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 21:46:28,288 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 21:46:28,288 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 21:46:28,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 21:46:28,288 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 21:46:28,288 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 21:46:28,289 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 21:46:28,289 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 21:46:28,289 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 21:46:28,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 21:46:28,289 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 21:46:28,326 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 21:46:28,340 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 21:46:28,344 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 21:46:28,346 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 21:46:28,348 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 21:46:28,349 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label28.c [2019-09-07 21:46:28,411 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05e91af03/0f0c50c9947f48e48f6635cdf760fd46/FLAG99989fbfd [2019-09-07 21:46:29,061 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 21:46:29,064 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label28.c [2019-09-07 21:46:29,088 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05e91af03/0f0c50c9947f48e48f6635cdf760fd46/FLAG99989fbfd [2019-09-07 21:46:29,184 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05e91af03/0f0c50c9947f48e48f6635cdf760fd46 [2019-09-07 21:46:29,197 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 21:46:29,200 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 21:46:29,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 21:46:29,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 21:46:29,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 21:46:29,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 09:46:29" (1/1) ... [2019-09-07 21:46:29,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a171813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:46:29, skipping insertion in model container [2019-09-07 21:46:29,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 09:46:29" (1/1) ... [2019-09-07 21:46:29,220 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 21:46:29,325 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 21:46:30,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 21:46:30,547 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 21:46:31,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 21:46:31,045 INFO L192 MainTranslator]: Completed translation [2019-09-07 21:46:31,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:46:31 WrapperNode [2019-09-07 21:46:31,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 21:46:31,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 21:46:31,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 21:46:31,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 21:46:31,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:46:31" (1/1) ... [2019-09-07 21:46:31,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:46:31" (1/1) ... [2019-09-07 21:46:31,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:46:31" (1/1) ... [2019-09-07 21:46:31,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:46:31" (1/1) ... [2019-09-07 21:46:31,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:46:31" (1/1) ... [2019-09-07 21:46:31,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:46:31" (1/1) ... [2019-09-07 21:46:31,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:46:31" (1/1) ... [2019-09-07 21:46:31,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 21:46:31,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 21:46:31,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 21:46:31,390 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 21:46:31,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:46:31" (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 [2019-09-07 21:46:31,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 21:46:31,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 21:46:31,467 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 21:46:31,468 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 21:46:31,468 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 21:46:31,468 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 21:46:31,468 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 21:46:31,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 21:46:31,469 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 21:46:31,469 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 21:46:31,469 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 21:46:31,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 21:46:31,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 21:46:35,780 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 21:46:35,783 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 21:46:35,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 09:46:35 BoogieIcfgContainer [2019-09-07 21:46:35,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 21:46:35,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 21:46:35,787 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 21:46:35,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 21:46:35,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 09:46:29" (1/3) ... [2019-09-07 21:46:35,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50742c9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 09:46:35, skipping insertion in model container [2019-09-07 21:46:35,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:46:31" (2/3) ... [2019-09-07 21:46:35,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50742c9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 09:46:35, skipping insertion in model container [2019-09-07 21:46:35,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 09:46:35" (3/3) ... [2019-09-07 21:46:35,802 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label28.c [2019-09-07 21:46:35,812 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 21:46:35,823 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 21:46:35,841 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 21:46:35,888 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 21:46:35,889 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 21:46:35,889 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 21:46:35,889 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 21:46:35,889 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 21:46:35,889 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 21:46:35,889 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 21:46:35,889 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 21:46:35,889 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 21:46:35,920 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2019-09-07 21:46:35,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-07 21:46:35,931 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 21:46:35,932 INFO L399 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, 1, 1, 1] [2019-09-07 21:46:35,934 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 21:46:35,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 21:46:35,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1669543897, now seen corresponding path program 1 times [2019-09-07 21:46:35,943 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 21:46:35,943 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 21:46:35,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:46:35,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 21:46:35,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:46:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:46:36,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 21:46:36,359 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 21:46:36,360 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 21:46:36,364 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 21:46:36,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 21:46:36,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 21:46:36,382 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2019-09-07 21:46:43,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 21:46:43,535 INFO L93 Difference]: Finished difference Result 2129 states and 3955 transitions. [2019-09-07 21:46:43,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 21:46:43,537 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2019-09-07 21:46:43,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 21:46:43,572 INFO L225 Difference]: With dead ends: 2129 [2019-09-07 21:46:43,573 INFO L226 Difference]: Without dead ends: 1447 [2019-09-07 21:46:43,587 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 21:46:43,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1447 states. [2019-09-07 21:46:43,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1447 to 1440. [2019-09-07 21:46:43,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1440 states. [2019-09-07 21:46:43,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 2109 transitions. [2019-09-07 21:46:43,726 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 2109 transitions. Word has length 70 [2019-09-07 21:46:43,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 21:46:43,728 INFO L475 AbstractCegarLoop]: Abstraction has 1440 states and 2109 transitions. [2019-09-07 21:46:43,728 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 21:46:43,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 2109 transitions. [2019-09-07 21:46:43,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-09-07 21:46:43,735 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 21:46:43,736 INFO L399 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 21:46:43,736 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 21:46:43,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 21:46:43,737 INFO L82 PathProgramCache]: Analyzing trace with hash 2046127664, now seen corresponding path program 1 times [2019-09-07 21:46:43,737 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 21:46:43,737 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 21:46:43,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:46:43,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 21:46:43,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:46:43,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:46:44,060 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 21:46:44,061 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 21:46:44,061 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 21:46:44,080 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 21:46:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:46:44,151 INFO L256 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 9 conjunts are in the unsatisfiable core [2019-09-07 21:46:44,162 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 21:46:44,264 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:46:44,265 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:46:44,266 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:46:44,275 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:46:44,276 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:46:44,278 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:46:44,282 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:46:44,283 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:47:08,772 WARN L188 SmtUtils]: Spent 24.37 s on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2019-09-07 21:47:08,885 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-09-07 21:47:09,359 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 21:47:09,375 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 21:47:09,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2019-09-07 21:47:09,378 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 21:47:09,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 21:47:09,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-09-07 21:47:09,379 INFO L87 Difference]: Start difference. First operand 1440 states and 2109 transitions. Second operand 11 states. [2019-09-07 21:47:50,815 WARN L188 SmtUtils]: Spent 40.52 s on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2019-09-07 21:48:23,759 WARN L188 SmtUtils]: Spent 26.22 s on a formula simplification that was a NOOP. DAG size: 61 [2019-09-07 21:49:04,466 WARN L188 SmtUtils]: Spent 40.45 s on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2019-09-07 21:49:50,191 WARN L188 SmtUtils]: Spent 40.43 s on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2019-09-07 21:50:30,985 WARN L188 SmtUtils]: Spent 40.42 s on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-07 21:51:13,711 WARN L188 SmtUtils]: Spent 40.41 s on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2019-09-07 21:51:54,308 WARN L188 SmtUtils]: Spent 40.47 s on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2019-09-07 21:52:37,060 WARN L188 SmtUtils]: Spent 42.51 s on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2019-09-07 21:53:26,051 WARN L188 SmtUtils]: Spent 40.48 s on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-07 21:54:06,818 WARN L188 SmtUtils]: Spent 40.48 s on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2019-09-07 21:54:47,439 WARN L188 SmtUtils]: Spent 40.54 s on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-07 21:55:30,406 WARN L188 SmtUtils]: Spent 40.51 s on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2019-09-07 21:56:02,603 WARN L188 SmtUtils]: Spent 26.28 s on a formula simplification that was a NOOP. DAG size: 52 [2019-09-07 21:56:33,243 WARN L188 SmtUtils]: Spent 26.25 s on a formula simplification that was a NOOP. DAG size: 58 [2019-09-07 21:57:13,988 WARN L188 SmtUtils]: Spent 40.62 s on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2019-09-07 21:57:55,213 WARN L188 SmtUtils]: Spent 40.52 s on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2019-09-07 21:58:30,169 WARN L188 SmtUtils]: Spent 26.26 s on a formula simplification that was a NOOP. DAG size: 56 [2019-09-07 21:59:12,266 WARN L188 SmtUtils]: Spent 41.38 s on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2019-09-07 21:59:55,040 WARN L188 SmtUtils]: Spent 41.89 s on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2019-09-07 22:00:52,225 WARN L188 SmtUtils]: Spent 40.55 s on a formula simplification. DAG size of input: 75 DAG size of output: 68