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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 00:09:33,867 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 00:09:33,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 00:09:33,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-15 00:09:33,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 00:09:33,921 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 00:09:33,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 00:09:33,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 00:09:33,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 00:09:33,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 00:09:33,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 00:09:33,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 00:09:33,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 00:09:33,945 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 00:09:33,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 00:09:33,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 00:09:33,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 00:09:33,964 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 00:09:33,965 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 00:09:33,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 00:09:33,967 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 [2019-10-15 00:09:34,002 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 00:09:34,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 00:09:34,005 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 00:09:34,005 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 00:09:34,006 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 00:09:34,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 00:09:34,007 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 00:09:34,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 00:09:34,007 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 00:09:34,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 00:09:34,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 00:09:34,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 00:09:34,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 00:09:34,009 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 00:09:34,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 00:09:34,009 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 00:09:34,010 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 00:09:34,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 00:09:34,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 00:09:34,011 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 00:09:34,011 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 00:09:34,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 00:09:34,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 00:09:34,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 00:09:34,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 00:09:34,012 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 00:09:34,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 00:09:34,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 00:09:34,013 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 00:09:34,376 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 00:09:34,397 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 00:09:34,403 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 00:09:34,405 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 00:09:34,406 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 00:09:34,406 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label04.c [2019-10-15 00:09:34,483 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c93a684b/81446549749545ad8900df06e9dd9acc/FLAG9bc8009e7 [2019-10-15 00:09:35,161 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 00:09:35,162 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label04.c [2019-10-15 00:09:35,193 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c93a684b/81446549749545ad8900df06e9dd9acc/FLAG9bc8009e7 [2019-10-15 00:09:35,340 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c93a684b/81446549749545ad8900df06e9dd9acc [2019-10-15 00:09:35,351 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 00:09:35,353 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 00:09:35,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 00:09:35,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 00:09:35,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 00:09:35,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:09:35" (1/1) ... [2019-10-15 00:09:35,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a57a4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:09:35, skipping insertion in model container [2019-10-15 00:09:35,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:09:35" (1/1) ... [2019-10-15 00:09:35,371 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 00:09:35,475 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 00:09:36,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 00:09:36,649 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 00:09:37,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 00:09:37,254 INFO L192 MainTranslator]: Completed translation [2019-10-15 00:09:37,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:09:37 WrapperNode [2019-10-15 00:09:37,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 00:09:37,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 00:09:37,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 00:09:37,257 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 00:09:37,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:09:37" (1/1) ... [2019-10-15 00:09:37,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:09:37" (1/1) ... [2019-10-15 00:09:37,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:09:37" (1/1) ... [2019-10-15 00:09:37,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:09:37" (1/1) ... [2019-10-15 00:09:37,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:09:37" (1/1) ... [2019-10-15 00:09:37,493 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:09:37" (1/1) ... [2019-10-15 00:09:37,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:09:37" (1/1) ... [2019-10-15 00:09:37,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 00:09:37,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 00:09:37,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 00:09:37,551 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 00:09:37,552 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:09:37" (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 [2019-10-15 00:09:37,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 00:09:37,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 00:09:37,619 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-15 00:09:37,619 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-15 00:09:37,619 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 00:09:37,620 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-15 00:09:37,620 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-15 00:09:37,620 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 00:09:37,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 00:09:37,621 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 00:09:37,621 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 00:09:37,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 00:09:37,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 00:09:42,366 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 00:09:42,367 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 00:09:42,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:09:42 BoogieIcfgContainer [2019-10-15 00:09:42,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 00:09:42,370 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 00:09:42,370 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 00:09:42,374 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 00:09:42,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:09:35" (1/3) ... [2019-10-15 00:09:42,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ebb30ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:09:42, skipping insertion in model container [2019-10-15 00:09:42,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:09:37" (2/3) ... [2019-10-15 00:09:42,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ebb30ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:09:42, skipping insertion in model container [2019-10-15 00:09:42,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:09:42" (3/3) ... [2019-10-15 00:09:42,378 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label04.c [2019-10-15 00:09:42,389 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 00:09:42,399 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 00:09:42,411 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 00:09:42,453 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 00:09:42,453 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 00:09:42,453 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 00:09:42,453 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 00:09:42,453 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 00:09:42,454 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 00:09:42,454 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 00:09:42,454 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 00:09:42,497 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2019-10-15 00:09:42,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-15 00:09:42,505 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:09:42,506 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] [2019-10-15 00:09:42,508 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:09:42,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:09:42,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1223613225, now seen corresponding path program 1 times [2019-10-15 00:09:42,525 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:09:42,526 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707530473] [2019-10-15 00:09:42,526 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:09:42,526 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:09:42,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:09:42,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:09:42,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:09:42,776 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707530473] [2019-10-15 00:09:42,777 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:09:42,777 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 00:09:42,778 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218718558] [2019-10-15 00:09:42,783 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 00:09:42,785 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:09:42,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 00:09:42,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 00:09:42,803 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2019-10-15 00:09:49,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:09:49,162 INFO L93 Difference]: Finished difference Result 2133 states and 3962 transitions. [2019-10-15 00:09:49,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 00:09:49,163 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2019-10-15 00:09:49,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:09:49,194 INFO L225 Difference]: With dead ends: 2133 [2019-10-15 00:09:49,194 INFO L226 Difference]: Without dead ends: 1451 [2019-10-15 00:09:49,208 INFO L600 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 [2019-10-15 00:09:49,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1451 states. [2019-10-15 00:09:49,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1451 to 1437. [2019-10-15 00:09:49,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1437 states. [2019-10-15 00:09:49,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 2166 transitions. [2019-10-15 00:09:49,349 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 2166 transitions. Word has length 26 [2019-10-15 00:09:49,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:09:49,351 INFO L462 AbstractCegarLoop]: Abstraction has 1437 states and 2166 transitions. [2019-10-15 00:09:49,351 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 00:09:49,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 2166 transitions. [2019-10-15 00:09:49,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-15 00:09:49,358 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:09:49,358 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 00:09:49,359 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:09:49,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:09:49,360 INFO L82 PathProgramCache]: Analyzing trace with hash -255135052, now seen corresponding path program 1 times [2019-10-15 00:09:49,360 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:09:49,360 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957277793] [2019-10-15 00:09:49,361 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:09:49,361 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:09:49,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:09:49,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:09:49,571 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:09:49,572 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957277793] [2019-10-15 00:09:49,572 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:09:49,572 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 00:09:49,572 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958970927] [2019-10-15 00:09:49,574 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 00:09:49,574 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:09:49,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 00:09:49,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 00:09:49,575 INFO L87 Difference]: Start difference. First operand 1437 states and 2166 transitions. Second operand 5 states. [2019-10-15 00:09:54,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:09:54,373 INFO L93 Difference]: Finished difference Result 4255 states and 6536 transitions. [2019-10-15 00:09:54,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 00:09:54,376 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2019-10-15 00:09:54,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:09:54,404 INFO L225 Difference]: With dead ends: 4255 [2019-10-15 00:09:54,404 INFO L226 Difference]: Without dead ends: 2824 [2019-10-15 00:09:54,411 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-15 00:09:54,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2824 states. [2019-10-15 00:09:54,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2824 to 2794. [2019-10-15 00:09:54,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2794 states. [2019-10-15 00:09:54,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2794 states to 2794 states and 3921 transitions. [2019-10-15 00:09:54,541 INFO L78 Accepts]: Start accepts. Automaton has 2794 states and 3921 transitions. Word has length 97 [2019-10-15 00:09:54,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:09:54,542 INFO L462 AbstractCegarLoop]: Abstraction has 2794 states and 3921 transitions. [2019-10-15 00:09:54,543 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 00:09:54,543 INFO L276 IsEmpty]: Start isEmpty. Operand 2794 states and 3921 transitions. [2019-10-15 00:09:54,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-15 00:09:54,551 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:09:54,551 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 00:09:54,552 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:09:54,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:09:54,553 INFO L82 PathProgramCache]: Analyzing trace with hash -414121280, now seen corresponding path program 1 times [2019-10-15 00:09:54,553 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:09:54,554 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955498388] [2019-10-15 00:09:54,555 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:09:54,555 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:09:54,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:09:54,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:09:54,842 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:09:54,843 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955498388] [2019-10-15 00:09:54,843 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522621948] [2019-10-15 00:09:54,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 00:09:54,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:09:54,926 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-15 00:09:54,935 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 00:09:55,006 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 00:09:55,007 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 00:09:55,009 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 00:09:55,013 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 00:09:55,018 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 00:09:55,019 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 00:09:55,021 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 00:09:55,023 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms