/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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:53:54,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:53:54,171 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:53:54,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-06 22:53:54,197 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:53:54,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:53:54,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:53:54,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:53:54,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:53:54,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:53:54,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:53:54,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:53:54,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:53:54,209 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:53:54,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:53:54,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:53:54,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:53:54,220 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:53:54,221 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:53:54,222 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:53:54,223 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 22:53:54,237 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:53:54,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:53:54,238 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:53:54,238 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:53:54,239 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:53:54,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:53:54,239 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:53:54,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:53:54,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:53:54,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:53:54,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:53:54,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:53:54,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:53:54,240 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:53:54,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:53:54,241 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:53:54,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:53:54,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:53:54,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:53:54,242 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:53:54,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:53:54,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:53:54,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:53:54,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:53:54,243 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:53:54,243 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:53:54,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:53:54,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:53:54,243 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 [2019-11-06 22:53:54,520 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:53:54,544 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:53:54,548 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:53:54,549 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:53:54,550 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:53:54,551 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label09.c [2019-11-06 22:53:54,624 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3dd57268/2251490b9c194af195952ace5f9fb69b/FLAG0390a7adc [2019-11-06 22:53:55,277 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:53:55,280 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label09.c [2019-11-06 22:53:55,296 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3dd57268/2251490b9c194af195952ace5f9fb69b/FLAG0390a7adc [2019-11-06 22:53:55,436 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3dd57268/2251490b9c194af195952ace5f9fb69b [2019-11-06 22:53:55,449 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:53:55,451 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:53:55,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:53:55,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:53:55,456 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:53:55,457 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:53:55" (1/1) ... [2019-11-06 22:53:55,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c169eef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:55, skipping insertion in model container [2019-11-06 22:53:55,460 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:53:55" (1/1) ... [2019-11-06 22:53:55,467 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:53:55,555 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:53:56,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:53:56,493 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:53:56,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:53:56,790 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:53:56,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:56 WrapperNode [2019-11-06 22:53:56,791 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:53:56,792 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:53:56,792 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:53:56,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:53:56,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:56" (1/1) ... [2019-11-06 22:53:56,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:56" (1/1) ... [2019-11-06 22:53:56,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:56" (1/1) ... [2019-11-06 22:53:56,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:56" (1/1) ... [2019-11-06 22:53:56,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:56" (1/1) ... [2019-11-06 22:53:56,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:56" (1/1) ... [2019-11-06 22:53:56,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:56" (1/1) ... [2019-11-06 22:53:56,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:53:56,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:53:56,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:53:56,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:53:56,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:56" (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 22:53:57,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:53:57,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:53:57,019 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 22:53:57,019 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-11-06 22:53:57,020 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:53:57,020 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 22:53:57,020 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-11-06 22:53:57,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:53:57,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:53:57,021 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 22:53:57,021 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:53:57,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:53:57,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:53:59,471 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:53:59,472 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 22:53:59,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:53:59 BoogieIcfgContainer [2019-11-06 22:53:59,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:53:59,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:53:59,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:53:59,478 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:53:59,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:53:55" (1/3) ... [2019-11-06 22:53:59,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@107cc077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:53:59, skipping insertion in model container [2019-11-06 22:53:59,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:53:56" (2/3) ... [2019-11-06 22:53:59,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@107cc077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:53:59, skipping insertion in model container [2019-11-06 22:53:59,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:53:59" (3/3) ... [2019-11-06 22:53:59,485 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label09.c [2019-11-06 22:53:59,496 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:53:59,508 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:53:59,519 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:53:59,549 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:53:59,550 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:53:59,550 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:53:59,550 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:53:59,550 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:53:59,550 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:53:59,550 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:53:59,550 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:53:59,579 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2019-11-06 22:53:59,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-06 22:53:59,588 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:53:59,589 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, 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 22:53:59,591 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:53:59,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:53:59,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1688658390, now seen corresponding path program 1 times [2019-11-06 22:53:59,608 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:53:59,608 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833840062] [2019-11-06 22:53:59,609 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:53:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:53:59,889 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 22:53:59,890 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833840062] [2019-11-06 22:53:59,891 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:53:59,891 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:53:59,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725032587] [2019-11-06 22:53:59,898 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:53:59,899 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:53:59,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:53:59,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:53:59,916 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 3 states. [2019-11-06 22:54:02,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:54:02,338 INFO L93 Difference]: Finished difference Result 1153 states and 2141 transitions. [2019-11-06 22:54:02,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:54:02,340 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-11-06 22:54:02,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:54:02,362 INFO L225 Difference]: With dead ends: 1153 [2019-11-06 22:54:02,363 INFO L226 Difference]: Without dead ends: 682 [2019-11-06 22:54:02,373 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:54:02,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2019-11-06 22:54:02,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2019-11-06 22:54:02,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 682 states. [2019-11-06 22:54:02,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1184 transitions. [2019-11-06 22:54:02,474 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1184 transitions. Word has length 53 [2019-11-06 22:54:02,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:54:02,475 INFO L462 AbstractCegarLoop]: Abstraction has 682 states and 1184 transitions. [2019-11-06 22:54:02,475 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:54:02,475 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1184 transitions. [2019-11-06 22:54:02,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-11-06 22:54:02,481 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:54:02,482 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, 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] [2019-11-06 22:54:02,482 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:54:02,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:54:02,482 INFO L82 PathProgramCache]: Analyzing trace with hash -956532517, now seen corresponding path program 1 times [2019-11-06 22:54:02,483 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:54:02,483 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692195464] [2019-11-06 22:54:02,483 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:54:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:54:02,763 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:54:02,764 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692195464] [2019-11-06 22:54:02,764 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:54:02,764 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:54:02,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59636693] [2019-11-06 22:54:02,767 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:54:02,767 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:54:02,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:54:02,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:54:02,768 INFO L87 Difference]: Start difference. First operand 682 states and 1184 transitions. Second operand 5 states. [2019-11-06 22:54:05,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:54:05,651 INFO L93 Difference]: Finished difference Result 2061 states and 3602 transitions. [2019-11-06 22:54:05,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:54:05,651 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2019-11-06 22:54:05,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:54:05,661 INFO L225 Difference]: With dead ends: 2061 [2019-11-06 22:54:05,662 INFO L226 Difference]: Without dead ends: 1385 [2019-11-06 22:54:05,664 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:54:05,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1385 states. [2019-11-06 22:54:05,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385 to 1377. [2019-11-06 22:54:05,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1377 states. [2019-11-06 22:54:05,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 2120 transitions. [2019-11-06 22:54:05,722 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 2120 transitions. Word has length 124 [2019-11-06 22:54:05,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:54:05,723 INFO L462 AbstractCegarLoop]: Abstraction has 1377 states and 2120 transitions. [2019-11-06 22:54:05,723 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:54:05,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 2120 transitions. [2019-11-06 22:54:05,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-11-06 22:54:05,727 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:54:05,728 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, 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] [2019-11-06 22:54:05,728 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:54:05,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:54:05,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1084580230, now seen corresponding path program 1 times [2019-11-06 22:54:05,729 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:54:05,729 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128793156] [2019-11-06 22:54:05,729 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:54:05,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:54:05,867 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:54:05,867 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128793156] [2019-11-06 22:54:05,868 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166060272] [2019-11-06 22:54:05,868 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 [2019-11-06 22:54:05,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:54:05,957 INFO L256 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 22:54:05,967 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:54:06,055 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:54:06,056 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:54:06,114 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:54:06,115 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-06 22:54:06,115 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2019-11-06 22:54:06,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585524290] [2019-11-06 22:54:06,116 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:54:06,117 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:54:06,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:54:06,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:54:06,117 INFO L87 Difference]: Start difference. First operand 1377 states and 2120 transitions. Second operand 4 states. [2019-11-06 22:54:08,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:54:08,992 INFO L93 Difference]: Finished difference Result 4791 states and 7316 transitions. [2019-11-06 22:54:08,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:54:08,993 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2019-11-06 22:54:08,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:54:09,012 INFO L225 Difference]: With dead ends: 4791 [2019-11-06 22:54:09,013 INFO L226 Difference]: Without dead ends: 3420 [2019-11-06 22:54:09,017 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:54:09,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3420 states. [2019-11-06 22:54:09,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3420 to 3080. [2019-11-06 22:54:09,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3080 states. [2019-11-06 22:54:09,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3080 states to 3080 states and 4611 transitions. [2019-11-06 22:54:09,181 INFO L78 Accepts]: Start accepts. Automaton has 3080 states and 4611 transitions. Word has length 153 [2019-11-06 22:54:09,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:54:09,182 INFO L462 AbstractCegarLoop]: Abstraction has 3080 states and 4611 transitions. [2019-11-06 22:54:09,182 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:54:09,183 INFO L276 IsEmpty]: Start isEmpty. Operand 3080 states and 4611 transitions. [2019-11-06 22:54:09,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-11-06 22:54:09,188 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:54:09,189 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, 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] [2019-11-06 22:54:09,397 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:54:09,397 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:54:09,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:54:09,397 INFO L82 PathProgramCache]: Analyzing trace with hash -967612557, now seen corresponding path program 1 times [2019-11-06 22:54:09,398 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:54:09,398 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871339843] [2019-11-06 22:54:09,398 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:54:09,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:54:09,562 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:54:09,562 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871339843] [2019-11-06 22:54:09,562 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:54:09,563 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:54:09,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024784888] [2019-11-06 22:54:09,563 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:54:09,564 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:54:09,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:54:09,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:54:09,564 INFO L87 Difference]: Start difference. First operand 3080 states and 4611 transitions. Second operand 6 states. [2019-11-06 22:54:12,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:54:12,339 INFO L93 Difference]: Finished difference Result 6876 states and 10276 transitions. [2019-11-06 22:54:12,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:54:12,346 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 168 [2019-11-06 22:54:12,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:54:12,366 INFO L225 Difference]: With dead ends: 6876 [2019-11-06 22:54:12,366 INFO L226 Difference]: Without dead ends: 3802 [2019-11-06 22:54:12,373 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:54:12,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3802 states. [2019-11-06 22:54:12,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3802 to 3780. [2019-11-06 22:54:12,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3780 states. [2019-11-06 22:54:12,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3780 states to 3780 states and 5019 transitions. [2019-11-06 22:54:12,475 INFO L78 Accepts]: Start accepts. Automaton has 3780 states and 5019 transitions. Word has length 168 [2019-11-06 22:54:12,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:54:12,476 INFO L462 AbstractCegarLoop]: Abstraction has 3780 states and 5019 transitions. [2019-11-06 22:54:12,476 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:54:12,476 INFO L276 IsEmpty]: Start isEmpty. Operand 3780 states and 5019 transitions. [2019-11-06 22:54:12,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2019-11-06 22:54:12,482 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:54:12,482 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-11-06 22:54:12,483 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:54:12,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:54:12,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1955857486, now seen corresponding path program 1 times [2019-11-06 22:54:12,483 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:54:12,484 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068430325] [2019-11-06 22:54:12,484 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:54:12,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:54:12,718 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:54:12,719 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068430325] [2019-11-06 22:54:12,719 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532319123] [2019-11-06 22:54:12,719 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:54:12,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:54:12,827 INFO L256 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 22:54:12,835 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:54:12,986 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:54:12,986 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:54:13,132 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:54:13,133 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1746751296] [2019-11-06 22:54:13,139 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 298 [2019-11-06 22:54:13,190 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-06 22:54:13,191 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-06 22:54:21,056 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-06 22:54:21,058 INFO L272 AbstractInterpreter]: Visited 134 different actions 134 times. Never merged. Never widened. Performed 305 root evaluator evaluations with a maximum evaluation depth of 14. Performed 305 inverse root evaluator evaluations with a maximum inverse evaluation depth of 14. Never found a fixpoint. Largest state had 24 variables. [2019-11-06 22:54:21,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:54:21,062 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-06 22:54:30,534 INFO L227 lantSequenceWeakener]: Weakened 278 states. On average, predicates are now at 77.95% of their original sizes. [2019-11-06 22:54:30,535 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-06 22:54:30,684 INFO L553 sIntCurrentIteration]: We unified 296 AI predicates to 296 [2019-11-06 22:54:30,686 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-06 22:54:30,687 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-06 22:54:30,688 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [6, 5, 5] total 21 [2019-11-06 22:54:30,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004330417] [2019-11-06 22:54:30,689 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-06 22:54:30,692 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:54:30,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-06 22:54:30,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2019-11-06 22:54:30,693 INFO L87 Difference]: Start difference. First operand 3780 states and 5019 transitions. Second operand 12 states. [2019-11-06 22:54:30,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:54:30,896 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:54:30,897 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: at least one of both input predicates is unknown: 25544#true or 27921#(and (= ~inputF~0 6) (= ~inputA~0 1) (= ~inputC~0 3) (= ~a16~0 11) (= ~a15~0 3) (= ~inputB~0 2) (= ~inputE~0 5) (= ~a12~0 5) (= ~inputD~0 4) (= (+ ~a18~0 87) 0)) ([#1{~a18~0 = [-87;-87]; ~inputA~0 = [1;1]; ~inputB~0 = [2;2]; ~a16~0 = [11;11]; ~inputC~0 = [3;3]; ~inputF~0 = [6;6]; ~a12~0 = [5;5]; ~a15~0 = [3;3]; ~inputD~0 = [4;4]; ~inputE~0 = [5;5]; }]) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$CoverageRelation.isCovered(PredicateUnifier.java:593) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.SdHoareTripleChecker$CheckHelper.check(SdHoareTripleChecker.java:153) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.SdHoareTripleChecker.checkCall(SdHoareTripleChecker.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.EfficientHoareTripleChecker.checkCall(EfficientHoareTripleChecker.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.checkCall(CachingHoareTripleChecker.java:125) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$CallSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:403) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.callSuccessors(AbstractInterpolantAutomaton.java:257) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.callSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.callSuccessors(TotalizeNwa.java:260) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.callSuccessors(ComplementDeterministicNwa.java:131) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.callSuccessors(ProductNwa.java:252) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.callSuccessors(ProductNwa.java:244) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addCallsAndSuccessors(NestedWordAutomatonReachableStates.java:1089) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:969) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:188) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:698) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:627) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:454) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-06 22:54:30,907 INFO L168 Benchmark]: Toolchain (without parser) took 35454.81 ms. Allocated memory was 145.8 MB in the beginning and 1.8 GB in the end (delta: 1.6 GB). Free memory was 99.7 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 285.6 MB. Max. memory is 7.1 GB. [2019-11-06 22:54:30,909 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 145.8 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-06 22:54:30,911 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1339.58 ms. Allocated memory was 145.8 MB in the beginning and 229.1 MB in the end (delta: 83.4 MB). Free memory was 99.5 MB in the beginning and 173.5 MB in the end (delta: -74.0 MB). Peak memory consumption was 48.5 MB. Max. memory is 7.1 GB. [2019-11-06 22:54:30,914 INFO L168 Benchmark]: Boogie Preprocessor took 156.07 ms. Allocated memory is still 229.1 MB. Free memory was 173.5 MB in the beginning and 163.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2019-11-06 22:54:30,916 INFO L168 Benchmark]: RCFGBuilder took 2525.20 ms. Allocated memory was 229.1 MB in the beginning and 277.9 MB in the end (delta: 48.8 MB). Free memory was 163.3 MB in the beginning and 232.8 MB in the end (delta: -69.5 MB). Peak memory consumption was 126.9 MB. Max. memory is 7.1 GB. [2019-11-06 22:54:30,917 INFO L168 Benchmark]: TraceAbstraction took 31426.42 ms. Allocated memory was 277.9 MB in the beginning and 1.8 GB in the end (delta: 1.5 GB). Free memory was 232.8 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 286.7 MB. Max. memory is 7.1 GB. [2019-11-06 22:54:30,924 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 145.8 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1339.58 ms. Allocated memory was 145.8 MB in the beginning and 229.1 MB in the end (delta: 83.4 MB). Free memory was 99.5 MB in the beginning and 173.5 MB in the end (delta: -74.0 MB). Peak memory consumption was 48.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 156.07 ms. Allocated memory is still 229.1 MB. Free memory was 173.5 MB in the beginning and 163.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2525.20 ms. Allocated memory was 229.1 MB in the beginning and 277.9 MB in the end (delta: 48.8 MB). Free memory was 163.3 MB in the beginning and 232.8 MB in the end (delta: -69.5 MB). Peak memory consumption was 126.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 31426.42 ms. Allocated memory was 277.9 MB in the beginning and 1.8 GB in the end (delta: 1.5 GB). Free memory was 232.8 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 286.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: at least one of both input predicates is unknown: 25544#true or 27921#(and (= ~inputF~0 6) (= ~inputA~0 1) (= ~inputC~0 3) (= ~a16~0 11) (= ~a15~0 3) (= ~inputB~0 2) (= ~inputE~0 5) (= ~a12~0 5) (= ~inputD~0 4) (= (+ ~a18~0 87) 0)) ([#1{~a18~0 = [-87;-87]; ~inputA~0 = [1;1]; ~inputB~0 = [2;2]; ~a16~0 = [11;11]; ~inputC~0 = [3;3]; ~inputF~0 = [6;6]; ~a12~0 = [5;5]; ~a15~0 = [3;3]; ~inputD~0 = [4;4]; ~inputE~0 = [5;5]; }]) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: at least one of both input predicates is unknown: 25544#true or 27921#(and (= ~inputF~0 6) (= ~inputA~0 1) (= ~inputC~0 3) (= ~a16~0 11) (= ~a15~0 3) (= ~inputB~0 2) (= ~inputE~0 5) (= ~a12~0 5) (= ~inputD~0 4) (= (+ ~a18~0 87) 0)) ([#1{~a18~0 = [-87;-87]; ~inputA~0 = [1;1]; ~inputB~0 = [2;2]; ~a16~0 = [11;11]; ~inputC~0 = [3;3]; ~inputF~0 = [6;6]; ~a12~0 = [5;5]; ~a15~0 = [3;3]; ~inputD~0 = [4;4]; ~inputE~0 = [5;5]; }]): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$CoverageRelation.isCovered(PredicateUnifier.java:593) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...