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 0.1.24-673a906-m [2019-10-02 18:37:12,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 18:37:12,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 18:37:12,957 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 18:37:12,957 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 18:37:12,958 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 18:37:12,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 18:37:12,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 18:37:12,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 18:37:12,964 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 18:37:12,965 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 18:37:12,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 18:37:12,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 18:37:12,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 18:37:12,969 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 18:37:12,970 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 18:37:12,971 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 18:37:12,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 18:37:12,974 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 18:37:12,976 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 18:37:12,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 18:37:12,978 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 18:37:12,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 18:37:12,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 18:37:12,983 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 18:37:12,993 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 [2019-10-02 18:37:13,009 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 18:37:13,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 18:37:13,010 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 18:37:13,010 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 18:37:13,011 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 18:37:13,011 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 18:37:13,011 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 18:37:13,011 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 18:37:13,012 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 18:37:13,012 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 18:37:13,012 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 18:37:13,013 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 18:37:13,013 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 18:37:13,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 18:37:13,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 18:37:13,013 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 18:37:13,014 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 18:37:13,014 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 18:37:13,014 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 18:37:13,014 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 18:37:13,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 18:37:13,015 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 18:37:13,015 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 18:37:13,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 18:37:13,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 18:37:13,015 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 18:37:13,016 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 18:37:13,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 18:37:13,016 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 18:37:13,016 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 18:37:13,045 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 18:37:13,059 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 18:37:13,063 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 18:37:13,064 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 18:37:13,065 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 18:37:13,066 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label07.c [2019-10-02 18:37:13,130 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/177126523/2e6daf4698f441d4965d0c57c4f98e38/FLAG3b97e9cfe [2019-10-02 18:37:13,701 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 18:37:13,705 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label07.c [2019-10-02 18:37:13,727 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/177126523/2e6daf4698f441d4965d0c57c4f98e38/FLAG3b97e9cfe [2019-10-02 18:37:13,989 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/177126523/2e6daf4698f441d4965d0c57c4f98e38 [2019-10-02 18:37:14,003 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 18:37:14,005 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 18:37:14,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 18:37:14,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 18:37:14,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 18:37:14,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 06:37:13" (1/1) ... [2019-10-02 18:37:14,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cf90c45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:37:14, skipping insertion in model container [2019-10-02 18:37:14,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 06:37:13" (1/1) ... [2019-10-02 18:37:14,026 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 18:37:14,091 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 18:37:14,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 18:37:14,669 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 18:37:14,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 18:37:14,811 INFO L192 MainTranslator]: Completed translation [2019-10-02 18:37:14,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:37:14 WrapperNode [2019-10-02 18:37:14,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 18:37:14,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 18:37:14,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 18:37:14,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 18:37:14,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:37:14" (1/1) ... [2019-10-02 18:37:14,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:37:14" (1/1) ... [2019-10-02 18:37:14,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:37:14" (1/1) ... [2019-10-02 18:37:14,853 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:37:14" (1/1) ... [2019-10-02 18:37:14,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:37:14" (1/1) ... [2019-10-02 18:37:14,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:37:14" (1/1) ... [2019-10-02 18:37:14,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:37:14" (1/1) ... [2019-10-02 18:37:14,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 18:37:14,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 18:37:14,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 18:37:14,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 18:37:14,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:37:14" (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 [2019-10-02 18:37:15,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 18:37:15,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 18:37:15,021 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-02 18:37:15,021 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 18:37:15,021 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-02 18:37:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 18:37:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 18:37:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 18:37:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 18:37:15,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 18:37:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 18:37:16,316 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 18:37:16,317 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 18:37:16,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 06:37:16 BoogieIcfgContainer [2019-10-02 18:37:16,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 18:37:16,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 18:37:16,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 18:37:16,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 18:37:16,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 06:37:13" (1/3) ... [2019-10-02 18:37:16,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@433c9bd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 06:37:16, skipping insertion in model container [2019-10-02 18:37:16,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 06:37:14" (2/3) ... [2019-10-02 18:37:16,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@433c9bd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 06:37:16, skipping insertion in model container [2019-10-02 18:37:16,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 06:37:16" (3/3) ... [2019-10-02 18:37:16,327 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label07.c [2019-10-02 18:37:16,337 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 18:37:16,346 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 18:37:16,363 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 18:37:16,395 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 18:37:16,395 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 18:37:16,396 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 18:37:16,396 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 18:37:16,396 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 18:37:16,396 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 18:37:16,397 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 18:37:16,397 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 18:37:16,419 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2019-10-02 18:37:16,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-02 18:37:16,431 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 18:37:16,432 INFO L411 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] [2019-10-02 18:37:16,434 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 18:37:16,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 18:37:16,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1452048058, now seen corresponding path program 1 times [2019-10-02 18:37:16,440 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 18:37:16,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 18:37:16,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 18:37:16,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 18:37:16,487 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 18:37:16,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 18:37:16,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 18:37:16,767 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 18:37:16,768 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 18:37:16,768 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 18:37:16,774 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 18:37:16,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 18:37:16,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 18:37:16,793 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2019-10-02 18:37:17,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 18:37:17,789 INFO L93 Difference]: Finished difference Result 362 states and 558 transitions. [2019-10-02 18:37:17,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 18:37:17,791 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2019-10-02 18:37:17,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 18:37:17,809 INFO L225 Difference]: With dead ends: 362 [2019-10-02 18:37:17,809 INFO L226 Difference]: Without dead ends: 294 [2019-10-02 18:37:17,811 INFO L640 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 [2019-10-02 18:37:17,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2019-10-02 18:37:17,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2019-10-02 18:37:17,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2019-10-02 18:37:17,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 441 transitions. [2019-10-02 18:37:17,892 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 441 transitions. Word has length 51 [2019-10-02 18:37:17,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 18:37:17,893 INFO L475 AbstractCegarLoop]: Abstraction has 294 states and 441 transitions. [2019-10-02 18:37:17,893 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 18:37:17,893 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 441 transitions. [2019-10-02 18:37:17,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-02 18:37:17,899 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 18:37:17,899 INFO L411 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] [2019-10-02 18:37:17,900 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 18:37:17,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 18:37:17,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1838295646, now seen corresponding path program 1 times [2019-10-02 18:37:17,900 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 18:37:17,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 18:37:17,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 18:37:17,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 18:37:17,902 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 18:37:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 18:37:18,165 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-02 18:37:18,166 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 18:37:18,166 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 18:37:18,167 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 122 with the following transitions: [2019-10-02 18:37:18,169 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] [2019-10-02 18:37:18,223 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 18:37:18,224 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 18:37:22,670 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-10-02 18:37:30,325 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 18:37:30,328 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. [2019-10-02 18:37:30,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 18:37:30,333 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 18:37:38,725 INFO L227 lantSequenceWeakener]: Weakened 118 states. On average, predicates are now at 73.79% of their original sizes. [2019-10-02 18:37:38,725 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 18:37:38,818 INFO L420 sIntCurrentIteration]: We unified 120 AI predicates to 120 [2019-10-02 18:37:38,819 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 18:37:38,820 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 18:37:38,820 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 12 [2019-10-02 18:37:38,820 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 18:37:38,823 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-02 18:37:38,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-02 18:37:38,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-10-02 18:37:38,824 INFO L87 Difference]: Start difference. First operand 294 states and 441 transitions. Second operand 10 states. [2019-10-02 18:43:09,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 18:43:09,889 INFO L93 Difference]: Finished difference Result 584 states and 750 transitions. [2019-10-02 18:43:09,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-02 18:43:09,889 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 121 [2019-10-02 18:43:09,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 18:43:09,896 INFO L225 Difference]: With dead ends: 584 [2019-10-02 18:43:09,896 INFO L226 Difference]: Without dead ends: 584 [2019-10-02 18:43:09,901 INFO L640 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 [2019-10-02 18:43:09,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2019-10-02 18:43:09,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 582. [2019-10-02 18:43:09,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582 states. [2019-10-02 18:43:09,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 748 transitions. [2019-10-02 18:43:09,943 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 748 transitions. Word has length 121 [2019-10-02 18:43:09,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 18:43:09,944 INFO L475 AbstractCegarLoop]: Abstraction has 582 states and 748 transitions. [2019-10-02 18:43:09,944 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-02 18:43:09,944 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 748 transitions. [2019-10-02 18:43:09,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-10-02 18:43:09,951 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 18:43:09,951 INFO L411 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] [2019-10-02 18:43:09,952 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 18:43:09,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 18:43:09,952 INFO L82 PathProgramCache]: Analyzing trace with hash -61895739, now seen corresponding path program 1 times [2019-10-02 18:43:09,953 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 18:43:09,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 18:43:09,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 18:43:09,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 18:43:09,955 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 18:43:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 18:43:10,185 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2019-10-02 18:43:10,186 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 18:43:10,190 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 18:43:10,190 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 197 with the following transitions: [2019-10-02 18:43:10,191 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] [2019-10-02 18:43:10,205 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 18:43:10,212 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 18:43:13,167 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-10-02 18:43:49,338 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 18:43:49,339 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. [2019-10-02 18:43:49,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 18:43:49,339 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 18:44:09,834 INFO L227 lantSequenceWeakener]: Weakened 193 states. On average, predicates are now at 73.42% of their original sizes. [2019-10-02 18:44:09,835 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 18:44:09,910 INFO L420 sIntCurrentIteration]: We unified 195 AI predicates to 195 [2019-10-02 18:44:09,910 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 18:44:09,910 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 18:44:09,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 12 [2019-10-02 18:44:09,911 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 18:44:09,911 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-02 18:44:09,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-02 18:44:09,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-10-02 18:44:09,912 INFO L87 Difference]: Start difference. First operand 582 states and 748 transitions. Second operand 10 states.