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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 14:06:15,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 14:06:15,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 14:06:15,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 14:06:15,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 14:06:15,825 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 14:06:15,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 14:06:15,827 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 14:06:15,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 14:06:15,829 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 14:06:15,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 14:06:15,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 14:06:15,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 14:06:15,835 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 14:06:15,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 14:06:15,837 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 14:06:15,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-09 14:06:15,850 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-09 14:06:15,864 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 14:06:15,865 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 14:06:15,865 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 14:06:15,865 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 14:06:15,866 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 14:06:15,866 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 14:06:15,866 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 14:06:15,867 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 14:06:15,867 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 14:06:15,867 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 14:06:15,868 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 14:06:15,868 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 14:06:15,868 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 14:06:15,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 14:06:15,869 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 14:06:15,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 14:06:15,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 14:06:15,869 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 14:06:15,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 14:06:15,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 14:06:15,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 14:06:15,870 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 14:06:15,870 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 14:06:15,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 14:06:15,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 14:06:15,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 14:06:15,871 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 14:06:15,872 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 14:06:15,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 14:06:15,872 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 14:06:15,900 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 14:06:15,912 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 14:06:15,915 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 14:06:15,917 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 14:06:15,917 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 14:06:15,918 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label07.c [2019-09-09 14:06:15,977 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/223342ff9/ddbf97ac482145889ee395fd48e1ac2d/FLAG9e394a1d4 [2019-09-09 14:06:16,506 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 14:06:16,506 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label07.c [2019-09-09 14:06:16,520 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/223342ff9/ddbf97ac482145889ee395fd48e1ac2d/FLAG9e394a1d4 [2019-09-09 14:06:16,749 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/223342ff9/ddbf97ac482145889ee395fd48e1ac2d [2019-09-09 14:06:16,758 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 14:06:16,760 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 14:06:16,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 14:06:16,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 14:06:16,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 14:06:16,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 02:06:16" (1/1) ... [2019-09-09 14:06:16,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@504dd7b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:06:16, skipping insertion in model container [2019-09-09 14:06:16,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 02:06:16" (1/1) ... [2019-09-09 14:06:16,776 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 14:06:16,822 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 14:06:17,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 14:06:17,321 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 14:06:17,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 14:06:17,510 INFO L192 MainTranslator]: Completed translation [2019-09-09 14:06:17,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:06:17 WrapperNode [2019-09-09 14:06:17,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 14:06:17,512 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 14:06:17,512 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 14:06:17,512 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 14:06:17,530 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:06:17" (1/1) ... [2019-09-09 14:06:17,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:06:17" (1/1) ... [2019-09-09 14:06:17,565 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:06:17" (1/1) ... [2019-09-09 14:06:17,566 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:06:17" (1/1) ... [2019-09-09 14:06:17,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:06:17" (1/1) ... [2019-09-09 14:06:17,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:06:17" (1/1) ... [2019-09-09 14:06:17,638 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:06:17" (1/1) ... [2019-09-09 14:06:17,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 14:06:17,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 14:06:17,650 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 14:06:17,650 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 14:06:17,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:06:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 14:06:17,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 14:06:17,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 14:06:17,717 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 14:06:17,717 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 14:06:17,717 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 14:06:17,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 14:06:17,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 14:06:17,718 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 14:06:17,718 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 14:06:17,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 14:06:17,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 14:06:19,013 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 14:06:19,013 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 14:06:19,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 02:06:19 BoogieIcfgContainer [2019-09-09 14:06:19,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 14:06:19,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 14:06:19,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 14:06:19,019 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 14:06:19,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 02:06:16" (1/3) ... [2019-09-09 14:06:19,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66f77f41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 02:06:19, skipping insertion in model container [2019-09-09 14:06:19,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 02:06:17" (2/3) ... [2019-09-09 14:06:19,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66f77f41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 02:06:19, skipping insertion in model container [2019-09-09 14:06:19,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 02:06:19" (3/3) ... [2019-09-09 14:06:19,023 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label07.c [2019-09-09 14:06:19,032 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 14:06:19,041 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 14:06:19,057 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 14:06:19,081 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 14:06:19,081 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 14:06:19,081 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 14:06:19,081 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 14:06:19,082 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 14:06:19,082 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 14:06:19,082 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 14:06:19,082 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 14:06:19,105 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2019-09-09 14:06:19,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-09-09 14:06:19,117 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 14:06:19,119 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 14:06:19,121 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 14:06:19,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 14:06:19,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1452048058, now seen corresponding path program 1 times [2019-09-09 14:06:19,129 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 14:06:19,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:06:19,172 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 14:06:19,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:06:19,172 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 14:06:19,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 14:06:19,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 14:06:19,428 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 14:06:19,428 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 14:06:19,429 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 14:06:19,434 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 14:06:19,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 14:06:19,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 14:06:19,453 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2019-09-09 14:06:20,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 14:06:20,498 INFO L93 Difference]: Finished difference Result 362 states and 558 transitions. [2019-09-09 14:06:20,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 14:06:20,501 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2019-09-09 14:06:20,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 14:06:20,528 INFO L225 Difference]: With dead ends: 362 [2019-09-09 14:06:20,528 INFO L226 Difference]: Without dead ends: 294 [2019-09-09 14:06:20,531 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 14:06:20,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2019-09-09 14:06:20,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2019-09-09 14:06:20,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2019-09-09 14:06:20,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 441 transitions. [2019-09-09 14:06:20,638 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 441 transitions. Word has length 51 [2019-09-09 14:06:20,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 14:06:20,639 INFO L475 AbstractCegarLoop]: Abstraction has 294 states and 441 transitions. [2019-09-09 14:06:20,639 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 14:06:20,639 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 441 transitions. [2019-09-09 14:06:20,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-09-09 14:06:20,645 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 14:06:20,645 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 14:06:20,646 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 14:06:20,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 14:06:20,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1838295646, now seen corresponding path program 1 times [2019-09-09 14:06:20,646 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 14:06:20,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:06:20,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 14:06:20,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:06:20,648 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 14:06:20,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 14:06:20,871 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-09 14:06:20,872 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 14:06:20,872 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 14:06:20,873 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 122 with the following transitions: [2019-09-09 14:06:20,875 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [317], [319], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [792], [796], [805], [809], [811], [816], [817], [818], [820], [821] [2019-09-09 14:06:20,918 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 14:06:20,918 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 14:06:24,981 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-09 14:06:31,870 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 14:06:31,873 INFO L272 AbstractInterpreter]: Visited 77 different actions 148 times. Merged at 4 different actions 4 times. Never widened. Performed 326 root evaluator evaluations with a maximum evaluation depth of 12. Performed 326 inverse root evaluator evaluations with a maximum inverse evaluation depth of 12. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2019-09-09 14:06:31,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 14:06:31,884 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 14:06:40,514 INFO L227 lantSequenceWeakener]: Weakened 118 states. On average, predicates are now at 73.79% of their original sizes. [2019-09-09 14:06:40,514 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 14:06:40,601 INFO L420 sIntCurrentIteration]: We unified 120 AI predicates to 120 [2019-09-09 14:06:40,601 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 14:06:40,602 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 14:06:40,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 12 [2019-09-09 14:06:40,603 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 14:06:40,604 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-09 14:06:40,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-09 14:06:40,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-09-09 14:06:40,605 INFO L87 Difference]: Start difference. First operand 294 states and 441 transitions. Second operand 10 states. [2019-09-09 14:12:10,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 14:12:10,915 INFO L93 Difference]: Finished difference Result 584 states and 750 transitions. [2019-09-09 14:12:10,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-09 14:12:10,915 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 121 [2019-09-09 14:12:10,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 14:12:10,920 INFO L225 Difference]: With dead ends: 584 [2019-09-09 14:12:10,920 INFO L226 Difference]: Without dead ends: 584 [2019-09-09 14:12:10,921 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2019-09-09 14:12:10,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2019-09-09 14:12:10,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 582. [2019-09-09 14:12:10,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582 states. [2019-09-09 14:12:10,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 748 transitions. [2019-09-09 14:12:10,949 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 748 transitions. Word has length 121 [2019-09-09 14:12:10,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 14:12:10,950 INFO L475 AbstractCegarLoop]: Abstraction has 582 states and 748 transitions. [2019-09-09 14:12:10,950 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-09 14:12:10,950 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 748 transitions. [2019-09-09 14:12:10,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-09-09 14:12:10,956 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 14:12:10,956 INFO L399 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, 2, 2, 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] [2019-09-09 14:12:10,957 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 14:12:10,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 14:12:10,957 INFO L82 PathProgramCache]: Analyzing trace with hash -61895739, now seen corresponding path program 1 times [2019-09-09 14:12:10,957 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 14:12:10,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:12:10,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 14:12:10,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 14:12:10,959 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 14:12:11,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 14:12:11,175 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2019-09-09 14:12:11,175 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 14:12:11,175 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 14:12:11,176 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 197 with the following transitions: [2019-09-09 14:12:11,176 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [317], [319], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [518], [792], [796], [805], [809], [811], [816], [817], [818], [820], [821] [2019-09-09 14:12:11,181 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 14:12:11,181 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 14:12:13,985 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-09 14:12:51,872 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 14:12:51,873 INFO L272 AbstractInterpreter]: Visited 83 different actions 241 times. Merged at 6 different actions 12 times. Never widened. Performed 580 root evaluator evaluations with a maximum evaluation depth of 16. Performed 580 inverse root evaluator evaluations with a maximum inverse evaluation depth of 16. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2019-09-09 14:12:51,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 14:12:51,873 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 14:13:12,369 INFO L227 lantSequenceWeakener]: Weakened 193 states. On average, predicates are now at 73.42% of their original sizes. [2019-09-09 14:13:12,369 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 14:13:12,444 INFO L420 sIntCurrentIteration]: We unified 195 AI predicates to 195 [2019-09-09 14:13:12,445 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 14:13:12,445 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 14:13:12,445 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 12 [2019-09-09 14:13:12,445 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 14:13:12,446 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-09 14:13:12,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-09 14:13:12,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-09-09 14:13:12,447 INFO L87 Difference]: Start difference. First operand 582 states and 748 transitions. Second operand 10 states.