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/Problem11_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 00:03:31,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 00:03:31,677 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 00:03:31,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-15 00:03:31,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 00:03:31,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 00:03:31,711 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 00:03:31,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 00:03:31,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 00:03:31,714 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 00:03:31,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 00:03:31,723 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 00:03:31,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 00:03:31,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 00:03:31,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 00:03:31,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 00:03:31,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 00:03:31,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 00:03:31,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 00:03:31,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 00:03:31,752 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 00:03:31,766 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 00:03:31,766 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 00:03:31,767 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 00:03:31,768 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 00:03:31,768 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 00:03:31,768 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 00:03:31,768 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 00:03:31,768 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 00:03:31,769 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 00:03:31,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 00:03:31,769 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 00:03:31,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 00:03:31,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 00:03:31,770 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 00:03:31,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 00:03:31,770 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 00:03:31,770 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 00:03:31,771 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 00:03:31,771 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 00:03:31,771 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 00:03:31,771 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 00:03:31,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 00:03:31,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 00:03:31,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 00:03:31,772 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 00:03:31,772 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 00:03:31,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 00:03:31,773 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 00:03:31,773 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 00:03:32,044 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 00:03:32,063 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 00:03:32,067 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 00:03:32,069 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 00:03:32,069 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 00:03:32,070 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label30.c [2019-10-15 00:03:32,143 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/677917e6e/ec0268d12a5c4d90b292d6132941c18d/FLAGc4980b643 [2019-10-15 00:03:32,787 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 00:03:32,788 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label30.c [2019-10-15 00:03:32,801 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/677917e6e/ec0268d12a5c4d90b292d6132941c18d/FLAGc4980b643 [2019-10-15 00:03:33,004 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/677917e6e/ec0268d12a5c4d90b292d6132941c18d [2019-10-15 00:03:33,017 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 00:03:33,019 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 00:03:33,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 00:03:33,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 00:03:33,024 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 00:03:33,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:03:33" (1/1) ... [2019-10-15 00:03:33,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ac730e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:33, skipping insertion in model container [2019-10-15 00:03:33,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:03:33" (1/1) ... [2019-10-15 00:03:33,035 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 00:03:33,090 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 00:03:33,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 00:03:33,736 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 00:03:34,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 00:03:34,081 INFO L192 MainTranslator]: Completed translation [2019-10-15 00:03:34,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:34 WrapperNode [2019-10-15 00:03:34,082 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 00:03:34,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 00:03:34,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 00:03:34,084 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 00:03:34,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:34" (1/1) ... [2019-10-15 00:03:34,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:34" (1/1) ... [2019-10-15 00:03:34,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:34" (1/1) ... [2019-10-15 00:03:34,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:34" (1/1) ... [2019-10-15 00:03:34,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:34" (1/1) ... [2019-10-15 00:03:34,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:34" (1/1) ... [2019-10-15 00:03:34,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:34" (1/1) ... [2019-10-15 00:03:34,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 00:03:34,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 00:03:34,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 00:03:34,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 00:03:34,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:34" (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 00:03:34,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 00:03:34,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 00:03:34,383 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-15 00:03:34,383 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 00:03:34,384 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-15 00:03:34,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 00:03:34,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 00:03:34,385 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 00:03:34,386 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 00:03:34,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 00:03:34,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 00:03:36,353 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 00:03:36,354 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 00:03:36,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:03:36 BoogieIcfgContainer [2019-10-15 00:03:36,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 00:03:36,357 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 00:03:36,357 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 00:03:36,361 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 00:03:36,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:03:33" (1/3) ... [2019-10-15 00:03:36,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@493a5071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:03:36, skipping insertion in model container [2019-10-15 00:03:36,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:03:34" (2/3) ... [2019-10-15 00:03:36,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@493a5071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:03:36, skipping insertion in model container [2019-10-15 00:03:36,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:03:36" (3/3) ... [2019-10-15 00:03:36,365 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label30.c [2019-10-15 00:03:36,375 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 00:03:36,384 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 00:03:36,395 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 00:03:36,426 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 00:03:36,426 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 00:03:36,426 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 00:03:36,426 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 00:03:36,427 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 00:03:36,427 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 00:03:36,427 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 00:03:36,427 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 00:03:36,499 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2019-10-15 00:03:36,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-10-15 00:03:36,506 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:03:36,507 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:03:36,509 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:03:36,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:03:36,516 INFO L82 PathProgramCache]: Analyzing trace with hash 506629546, now seen corresponding path program 1 times [2019-10-15 00:03:36,527 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:03:36,527 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409999112] [2019-10-15 00:03:36,528 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:03:36,528 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:03:36,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:03:36,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:03:36,902 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 00:03:36,906 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409999112] [2019-10-15 00:03:36,907 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:03:36,907 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 00:03:36,908 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271706842] [2019-10-15 00:03:36,912 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 00:03:36,914 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:03:36,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 00:03:36,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 00:03:36,932 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 4 states. [2019-10-15 00:03:39,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:03:39,102 INFO L93 Difference]: Finished difference Result 997 states and 1776 transitions. [2019-10-15 00:03:39,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 00:03:39,108 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2019-10-15 00:03:39,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:03:39,131 INFO L225 Difference]: With dead ends: 997 [2019-10-15 00:03:39,131 INFO L226 Difference]: Without dead ends: 623 [2019-10-15 00:03:39,141 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 00:03:39,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-10-15 00:03:39,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 620. [2019-10-15 00:03:39,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2019-10-15 00:03:39,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 896 transitions. [2019-10-15 00:03:39,239 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 896 transitions. Word has length 35 [2019-10-15 00:03:39,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:03:39,240 INFO L462 AbstractCegarLoop]: Abstraction has 620 states and 896 transitions. [2019-10-15 00:03:39,240 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 00:03:39,240 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 896 transitions. [2019-10-15 00:03:39,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-10-15 00:03:39,246 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:03:39,246 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:03:39,247 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:03:39,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:03:39,247 INFO L82 PathProgramCache]: Analyzing trace with hash -295507094, now seen corresponding path program 1 times [2019-10-15 00:03:39,248 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:03:39,248 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153345067] [2019-10-15 00:03:39,248 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:03:39,248 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:03:39,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:03:39,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:03:39,537 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:03:39,538 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153345067] [2019-10-15 00:03:39,538 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:03:39,538 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 00:03:39,539 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071978708] [2019-10-15 00:03:39,545 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 00:03:39,546 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:03:39,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 00:03:39,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 00:03:39,546 INFO L87 Difference]: Start difference. First operand 620 states and 896 transitions. Second operand 6 states. [2019-10-15 00:03:41,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:03:41,112 INFO L93 Difference]: Finished difference Result 1833 states and 2715 transitions. [2019-10-15 00:03:41,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 00:03:41,113 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 107 [2019-10-15 00:03:41,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:03:41,124 INFO L225 Difference]: With dead ends: 1833 [2019-10-15 00:03:41,125 INFO L226 Difference]: Without dead ends: 1219 [2019-10-15 00:03:41,127 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-15 00:03:41,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2019-10-15 00:03:41,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1200. [2019-10-15 00:03:41,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1200 states. [2019-10-15 00:03:41,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1735 transitions. [2019-10-15 00:03:41,188 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 1735 transitions. Word has length 107 [2019-10-15 00:03:41,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:03:41,189 INFO L462 AbstractCegarLoop]: Abstraction has 1200 states and 1735 transitions. [2019-10-15 00:03:41,189 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 00:03:41,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 1735 transitions. [2019-10-15 00:03:41,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-15 00:03:41,193 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:03:41,194 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:03:41,194 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:03:41,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:03:41,195 INFO L82 PathProgramCache]: Analyzing trace with hash 388493337, now seen corresponding path program 1 times [2019-10-15 00:03:41,195 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:03:41,195 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220008049] [2019-10-15 00:03:41,195 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:03:41,195 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:03:41,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:03:41,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:03:41,352 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:03:41,353 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220008049] [2019-10-15 00:03:41,353 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:03:41,353 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 00:03:41,353 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281412166] [2019-10-15 00:03:41,355 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 00:03:41,355 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:03:41,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 00:03:41,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 00:03:41,356 INFO L87 Difference]: Start difference. First operand 1200 states and 1735 transitions. Second operand 4 states. [2019-10-15 00:03:43,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:03:43,170 INFO L93 Difference]: Finished difference Result 3552 states and 5208 transitions. [2019-10-15 00:03:43,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 00:03:43,170 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2019-10-15 00:03:43,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:03:43,187 INFO L225 Difference]: With dead ends: 3552 [2019-10-15 00:03:43,187 INFO L226 Difference]: Without dead ends: 2358 [2019-10-15 00:03:43,192 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 00:03:43,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2358 states. [2019-10-15 00:03:43,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2358 to 2153. [2019-10-15 00:03:43,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2153 states. [2019-10-15 00:03:43,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 3070 transitions. [2019-10-15 00:03:43,283 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 3070 transitions. Word has length 108 [2019-10-15 00:03:43,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:03:43,285 INFO L462 AbstractCegarLoop]: Abstraction has 2153 states and 3070 transitions. [2019-10-15 00:03:43,286 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 00:03:43,286 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 3070 transitions. [2019-10-15 00:03:43,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-10-15 00:03:43,296 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:03:43,297 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:03:43,299 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:03:43,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:03:43,300 INFO L82 PathProgramCache]: Analyzing trace with hash 204212222, now seen corresponding path program 1 times [2019-10-15 00:03:43,300 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:03:43,300 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333129977] [2019-10-15 00:03:43,301 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:03:43,301 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:03:43,301 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:03:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:03:43,562 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:03:43,563 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333129977] [2019-10-15 00:03:43,563 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:03:43,563 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 00:03:43,563 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348478258] [2019-10-15 00:03:43,565 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 00:03:43,566 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:03:43,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 00:03:43,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 00:03:43,566 INFO L87 Difference]: Start difference. First operand 2153 states and 3070 transitions. Second operand 6 states. [2019-10-15 00:03:46,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:03:46,189 INFO L93 Difference]: Finished difference Result 8027 states and 14009 transitions. [2019-10-15 00:03:46,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 00:03:46,189 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2019-10-15 00:03:46,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:03:46,248 INFO L225 Difference]: With dead ends: 8027 [2019-10-15 00:03:46,249 INFO L226 Difference]: Without dead ends: 5880 [2019-10-15 00:03:46,262 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-10-15 00:03:46,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5880 states. [2019-10-15 00:03:46,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5880 to 5142. [2019-10-15 00:03:46,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5142 states. [2019-10-15 00:03:46,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5142 states to 5142 states and 7403 transitions. [2019-10-15 00:03:46,513 INFO L78 Accepts]: Start accepts. Automaton has 5142 states and 7403 transitions. Word has length 133 [2019-10-15 00:03:46,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:03:46,514 INFO L462 AbstractCegarLoop]: Abstraction has 5142 states and 7403 transitions. [2019-10-15 00:03:46,514 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 00:03:46,514 INFO L276 IsEmpty]: Start isEmpty. Operand 5142 states and 7403 transitions. [2019-10-15 00:03:46,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-10-15 00:03:46,519 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:03:46,520 INFO L380 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, 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] [2019-10-15 00:03:46,520 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:03:46,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:03:46,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1527930193, now seen corresponding path program 1 times [2019-10-15 00:03:46,521 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:03:46,521 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416220116] [2019-10-15 00:03:46,521 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:03:46,522 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:03:46,522 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:03:46,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:03:46,724 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:03:46,725 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416220116] [2019-10-15 00:03:46,725 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4444017] [2019-10-15 00:03:46,725 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 00:03:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:03:46,867 INFO L256 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-15 00:03:46,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 00:03:46,940 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:03:46,940 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 00:03:47,071 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:03:47,071 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1512721808] [2019-10-15 00:03:47,086 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 181 [2019-10-15 00:03:47,132 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-15 00:03:47,132 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)