/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/Problem18_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:57:24,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:57:24,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:57:24,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-06 22:57:24,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:57:24,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:57:24,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:57:24,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:57:24,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:57:24,693 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:57:24,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:57:24,699 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:57:24,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:57:24,706 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:57:24,709 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:57:24,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:57:24,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:57:24,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:57:24,722 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:57:24,723 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:57:24,724 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 22:57:24,752 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:57:24,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:57:24,761 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:57:24,762 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:57:24,762 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:57:24,762 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:57:24,762 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:57:24,762 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:57:24,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:57:24,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:57:24,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:57:24,765 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:57:24,765 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:57:24,766 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:57:24,766 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:57:24,766 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:57:24,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:57:24,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:57:24,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:57:24,767 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:57:24,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:57:24,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:57:24,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:57:24,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:57:24,772 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:57:24,773 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:57:24,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:57:24,773 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:57:24,773 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 [2019-11-06 22:57:25,056 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:57:25,075 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:57:25,078 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:57:25,080 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:57:25,080 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:57:25,081 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label28.c [2019-11-06 22:57:25,153 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1de3d740f/156372c0ae7f40f790f7077b35b842e8/FLAG7762904c7 [2019-11-06 22:57:25,872 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:57:25,873 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label28.c [2019-11-06 22:57:25,901 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1de3d740f/156372c0ae7f40f790f7077b35b842e8/FLAG7762904c7 [2019-11-06 22:57:26,014 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1de3d740f/156372c0ae7f40f790f7077b35b842e8 [2019-11-06 22:57:26,025 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:57:26,027 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:57:26,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:57:26,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:57:26,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:57:26,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:57:26" (1/1) ... [2019-11-06 22:57:26,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@738bbee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:26, skipping insertion in model container [2019-11-06 22:57:26,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:57:26" (1/1) ... [2019-11-06 22:57:26,046 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:57:26,170 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:57:27,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:57:27,319 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:57:27,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:57:27,903 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:57:27,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:27 WrapperNode [2019-11-06 22:57:27,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:57:27,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:57:27,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:57:27,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:57:27,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:27" (1/1) ... [2019-11-06 22:57:27,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:27" (1/1) ... [2019-11-06 22:57:27,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:27" (1/1) ... [2019-11-06 22:57:27,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:27" (1/1) ... [2019-11-06 22:57:28,135 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:27" (1/1) ... [2019-11-06 22:57:28,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:27" (1/1) ... [2019-11-06 22:57:28,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:27" (1/1) ... [2019-11-06 22:57:28,206 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:57:28,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:57:28,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:57:28,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:57:28,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:27" (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 22:57:28,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:57:28,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:57:28,283 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 22:57:28,283 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-11-06 22:57:28,283 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-11-06 22:57:28,283 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:57:28,283 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 22:57:28,283 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-11-06 22:57:28,284 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-11-06 22:57:28,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:57:28,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:57:28,285 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 22:57:28,285 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:57:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:57:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:57:32,000 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:57:32,000 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 22:57:32,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:57:32 BoogieIcfgContainer [2019-11-06 22:57:32,002 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:57:32,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:57:32,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:57:32,009 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:57:32,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:57:26" (1/3) ... [2019-11-06 22:57:32,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@229894c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:57:32, skipping insertion in model container [2019-11-06 22:57:32,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:27" (2/3) ... [2019-11-06 22:57:32,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@229894c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:57:32, skipping insertion in model container [2019-11-06 22:57:32,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:57:32" (3/3) ... [2019-11-06 22:57:32,013 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label28.c [2019-11-06 22:57:32,025 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:57:32,037 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:57:32,049 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:57:32,096 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:57:32,096 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:57:32,096 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:57:32,096 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:57:32,096 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:57:32,096 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:57:32,097 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:57:32,097 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:57:32,201 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-11-06 22:57:32,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-11-06 22:57:32,211 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:57:32,213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:57:32,214 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:57:32,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:57:32,221 INFO L82 PathProgramCache]: Analyzing trace with hash -614102951, now seen corresponding path program 1 times [2019-11-06 22:57:32,231 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:57:32,231 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100290115] [2019-11-06 22:57:32,232 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:57:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:57:32,580 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 22:57:32,581 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100290115] [2019-11-06 22:57:32,582 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:57:32,582 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:57:32,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37207531] [2019-11-06 22:57:32,589 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:57:32,590 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:57:32,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:57:32,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:57:32,608 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2019-11-06 22:57:39,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:57:39,641 INFO L93 Difference]: Finished difference Result 2970 states and 5743 transitions. [2019-11-06 22:57:39,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:57:39,643 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2019-11-06 22:57:39,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:57:39,682 INFO L225 Difference]: With dead ends: 2970 [2019-11-06 22:57:39,682 INFO L226 Difference]: Without dead ends: 2114 [2019-11-06 22:57:39,695 INFO L630 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 [2019-11-06 22:57:39,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2114 states. [2019-11-06 22:57:39,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2114 to 1412. [2019-11-06 22:57:39,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1412 states. [2019-11-06 22:57:39,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 2246 transitions. [2019-11-06 22:57:39,855 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 2246 transitions. Word has length 70 [2019-11-06 22:57:39,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:57:39,858 INFO L462 AbstractCegarLoop]: Abstraction has 1412 states and 2246 transitions. [2019-11-06 22:57:39,858 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:57:39,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 2246 transitions. [2019-11-06 22:57:39,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-11-06 22:57:39,872 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:57:39,873 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, 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] [2019-11-06 22:57:39,873 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:57:39,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:57:39,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1169931765, now seen corresponding path program 1 times [2019-11-06 22:57:39,874 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:57:39,875 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826834016] [2019-11-06 22:57:39,875 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:57:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:57:40,146 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:57:40,147 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826834016] [2019-11-06 22:57:40,148 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:57:40,148 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:57:40,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336254480] [2019-11-06 22:57:40,156 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:57:40,156 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:57:40,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:57:40,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:57:40,158 INFO L87 Difference]: Start difference. First operand 1412 states and 2246 transitions. Second operand 5 states. [2019-11-06 22:57:45,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:57:45,697 INFO L93 Difference]: Finished difference Result 4294 states and 6875 transitions. [2019-11-06 22:57:45,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:57:45,701 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2019-11-06 22:57:45,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:57:45,718 INFO L225 Difference]: With dead ends: 4294 [2019-11-06 22:57:45,718 INFO L226 Difference]: Without dead ends: 2888 [2019-11-06 22:57:45,723 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 22:57:45,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2019-11-06 22:57:45,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 2866. [2019-11-06 22:57:45,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2866 states. [2019-11-06 22:57:45,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 4300 transitions. [2019-11-06 22:57:45,812 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 4300 transitions. Word has length 139 [2019-11-06 22:57:45,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:57:45,813 INFO L462 AbstractCegarLoop]: Abstraction has 2866 states and 4300 transitions. [2019-11-06 22:57:45,813 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:57:45,813 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 4300 transitions. [2019-11-06 22:57:45,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-11-06 22:57:45,815 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:57:45,816 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, 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] [2019-11-06 22:57:45,816 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:57:45,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:57:45,816 INFO L82 PathProgramCache]: Analyzing trace with hash 387948717, now seen corresponding path program 1 times [2019-11-06 22:57:45,817 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:57:45,817 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892551321] [2019-11-06 22:57:45,817 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:57:45,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:57:45,999 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:57:46,000 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892551321] [2019-11-06 22:57:46,000 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:57:46,000 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:57:46,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492966447] [2019-11-06 22:57:46,001 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:57:46,002 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:57:46,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:57:46,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:57:46,002 INFO L87 Difference]: Start difference. First operand 2866 states and 4300 transitions. Second operand 6 states. [2019-11-06 22:57:50,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:57:50,678 INFO L93 Difference]: Finished difference Result 7223 states and 10803 transitions. [2019-11-06 22:57:50,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:57:50,679 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2019-11-06 22:57:50,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:57:50,704 INFO L225 Difference]: With dead ends: 7223 [2019-11-06 22:57:50,705 INFO L226 Difference]: Without dead ends: 4363 [2019-11-06 22:57:50,712 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 22:57:50,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4363 states. [2019-11-06 22:57:50,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4363 to 4334. [2019-11-06 22:57:50,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4334 states. [2019-11-06 22:57:50,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4334 states to 4334 states and 5546 transitions. [2019-11-06 22:57:50,855 INFO L78 Accepts]: Start accepts. Automaton has 4334 states and 5546 transitions. Word has length 143 [2019-11-06 22:57:50,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:57:50,857 INFO L462 AbstractCegarLoop]: Abstraction has 4334 states and 5546 transitions. [2019-11-06 22:57:50,857 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:57:50,857 INFO L276 IsEmpty]: Start isEmpty. Operand 4334 states and 5546 transitions. [2019-11-06 22:57:50,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-11-06 22:57:50,859 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:57:50,860 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, 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] [2019-11-06 22:57:50,860 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:57:50,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:57:50,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1153005556, now seen corresponding path program 1 times [2019-11-06 22:57:50,861 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:57:50,861 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485811795] [2019-11-06 22:57:50,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:57:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:57:51,038 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:57:51,039 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485811795] [2019-11-06 22:57:51,039 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:57:51,039 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:57:51,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388098460] [2019-11-06 22:57:51,040 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:57:51,040 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:57:51,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:57:51,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:57:51,041 INFO L87 Difference]: Start difference. First operand 4334 states and 5546 transitions. Second operand 4 states. [2019-11-06 22:57:57,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:57:57,174 INFO L93 Difference]: Finished difference Result 17212 states and 22491 transitions. [2019-11-06 22:57:57,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:57:57,175 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 176 [2019-11-06 22:57:57,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:57:57,234 INFO L225 Difference]: With dead ends: 17212 [2019-11-06 22:57:57,234 INFO L226 Difference]: Without dead ends: 12884 [2019-11-06 22:57:57,248 INFO L630 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 [2019-11-06 22:57:57,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12884 states. [2019-11-06 22:57:57,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12884 to 12884. [2019-11-06 22:57:57,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12884 states. [2019-11-06 22:57:57,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12884 states to 12884 states and 15889 transitions. [2019-11-06 22:57:57,557 INFO L78 Accepts]: Start accepts. Automaton has 12884 states and 15889 transitions. Word has length 176 [2019-11-06 22:57:57,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:57:57,559 INFO L462 AbstractCegarLoop]: Abstraction has 12884 states and 15889 transitions. [2019-11-06 22:57:57,559 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:57:57,559 INFO L276 IsEmpty]: Start isEmpty. Operand 12884 states and 15889 transitions. [2019-11-06 22:57:57,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2019-11-06 22:57:57,567 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:57:57,568 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:57,568 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:57:57,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:57:57,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1116911945, now seen corresponding path program 1 times [2019-11-06 22:57:57,569 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:57:57,570 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799797517] [2019-11-06 22:57:57,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:57:57,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:57:57,923 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 218 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:57:57,925 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799797517] [2019-11-06 22:57:57,925 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359645441] [2019-11-06 22:57:57,925 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 22:57:58,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:57:58,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 22:57:58,085 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:57:58,245 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 218 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:57:58,245 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:57:58,439 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 218 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:57:58,441 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [958100164] [2019-11-06 22:57:58,448 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 287 [2019-11-06 22:57:58,508 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-06 22:57:58,509 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)