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/Problem01_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 16:45:39,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 16:45:39,925 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 16:45:39,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-02 16:45:39,996 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 16:45:40,011 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 16:45:40,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 16:45:40,011 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 16:45:40,011 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 16:45:40,012 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 16:45:40,012 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 16:45:40,012 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 16:45:40,013 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 16:45:40,013 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 16:45:40,013 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 16:45:40,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 16:45:40,014 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 16:45:40,014 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 16:45:40,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 16:45:40,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 16:45:40,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 16:45:40,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 16:45:40,015 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 16:45:40,015 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 16:45:40,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 16:45:40,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 16:45:40,016 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 16:45:40,016 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 16:45:40,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 16:45:40,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 16:45:40,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 16:45:40,017 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 16:45:40,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 16:45:40,018 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 16:45:40,018 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 16:45:40,065 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 16:45:40,077 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 16:45:40,081 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 16:45:40,082 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 16:45:40,082 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 16:45:40,083 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label33.c [2019-10-02 16:45:40,145 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7190fed1e/9614184c1927455faa047d3f8de45129/FLAG8cff0ae8e [2019-10-02 16:45:40,718 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 16:45:40,719 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label33.c [2019-10-02 16:45:40,729 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7190fed1e/9614184c1927455faa047d3f8de45129/FLAG8cff0ae8e [2019-10-02 16:45:40,970 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7190fed1e/9614184c1927455faa047d3f8de45129 [2019-10-02 16:45:40,978 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 16:45:40,980 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 16:45:40,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 16:45:40,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 16:45:40,984 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 16:45:40,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:45:40" (1/1) ... [2019-10-02 16:45:40,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35da1448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:45:40, skipping insertion in model container [2019-10-02 16:45:40,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:45:40" (1/1) ... [2019-10-02 16:45:40,996 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 16:45:41,049 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 16:45:41,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:45:41,548 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 16:45:41,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:45:41,679 INFO L192 MainTranslator]: Completed translation [2019-10-02 16:45:41,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:45:41 WrapperNode [2019-10-02 16:45:41,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 16:45:41,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 16:45:41,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 16:45:41,680 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 16:45:41,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:45:41" (1/1) ... [2019-10-02 16:45:41,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:45:41" (1/1) ... [2019-10-02 16:45:41,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:45:41" (1/1) ... [2019-10-02 16:45:41,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:45:41" (1/1) ... [2019-10-02 16:45:41,750 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:45:41" (1/1) ... [2019-10-02 16:45:41,768 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:45:41" (1/1) ... [2019-10-02 16:45:41,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:45:41" (1/1) ... [2019-10-02 16:45:41,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 16:45:41,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 16:45:41,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 16:45:41,780 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 16:45:41,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:45:41" (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 16:45:41,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 16:45:41,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 16:45:41,843 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-02 16:45:41,843 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 16:45:41,843 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-02 16:45:41,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 16:45:41,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 16:45:41,843 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 16:45:41,843 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 16:45:41,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 16:45:41,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 16:45:42,992 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 16:45:42,993 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 16:45:42,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:45:42 BoogieIcfgContainer [2019-10-02 16:45:42,994 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 16:45:42,996 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 16:45:42,996 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 16:45:42,999 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 16:45:42,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 04:45:40" (1/3) ... [2019-10-02 16:45:43,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24183d55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:45:42, skipping insertion in model container [2019-10-02 16:45:43,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:45:41" (2/3) ... [2019-10-02 16:45:43,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24183d55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:45:43, skipping insertion in model container [2019-10-02 16:45:43,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:45:42" (3/3) ... [2019-10-02 16:45:43,002 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label33.c [2019-10-02 16:45:43,012 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 16:45:43,020 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 16:45:43,037 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 16:45:43,063 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 16:45:43,063 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 16:45:43,064 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 16:45:43,064 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 16:45:43,064 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 16:45:43,064 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 16:45:43,064 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 16:45:43,065 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 16:45:43,087 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2019-10-02 16:45:43,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-10-02 16:45:43,100 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:45:43,102 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:45:43,103 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:45:43,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:45:43,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1566992543, now seen corresponding path program 1 times [2019-10-02 16:45:43,111 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:45:43,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:45:43,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:45:43,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:45:43,158 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:45:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:45:43,512 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 16:45:43,514 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:45:43,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:45:43,515 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:45:43,520 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:45:43,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:45:43,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:45:43,538 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2019-10-02 16:45:44,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:45:44,499 INFO L93 Difference]: Finished difference Result 346 states and 487 transitions. [2019-10-02 16:45:44,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:45:44,501 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2019-10-02 16:45:44,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:45:44,528 INFO L225 Difference]: With dead ends: 346 [2019-10-02 16:45:44,528 INFO L226 Difference]: Without dead ends: 278 [2019-10-02 16:45:44,531 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 3 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 16:45:44,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2019-10-02 16:45:44,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2019-10-02 16:45:44,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2019-10-02 16:45:44,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 394 transitions. [2019-10-02 16:45:44,595 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 394 transitions. Word has length 83 [2019-10-02 16:45:44,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:45:44,595 INFO L475 AbstractCegarLoop]: Abstraction has 278 states and 394 transitions. [2019-10-02 16:45:44,596 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:45:44,596 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 394 transitions. [2019-10-02 16:45:44,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-02 16:45:44,600 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:45:44,601 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:45:44,601 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:45:44,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:45:44,602 INFO L82 PathProgramCache]: Analyzing trace with hash 212216232, now seen corresponding path program 1 times [2019-10-02 16:45:44,602 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:45:44,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:45:44,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:45:44,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:45:44,604 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:45:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:45:44,698 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:45:44,699 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:45:44,699 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 16:45:44,699 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:45:44,701 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 16:45:44,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 16:45:44,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-02 16:45:44,702 INFO L87 Difference]: Start difference. First operand 278 states and 394 transitions. Second operand 6 states. [2019-10-02 16:45:45,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:45:45,525 INFO L93 Difference]: Finished difference Result 568 states and 814 transitions. [2019-10-02 16:45:45,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 16:45:45,526 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2019-10-02 16:45:45,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:45:45,532 INFO L225 Difference]: With dead ends: 568 [2019-10-02 16:45:45,533 INFO L226 Difference]: Without dead ends: 568 [2019-10-02 16:45:45,535 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-02 16:45:45,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2019-10-02 16:45:45,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 556. [2019-10-02 16:45:45,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2019-10-02 16:45:45,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 785 transitions. [2019-10-02 16:45:45,607 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 785 transitions. Word has length 93 [2019-10-02 16:45:45,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:45:45,607 INFO L475 AbstractCegarLoop]: Abstraction has 556 states and 785 transitions. [2019-10-02 16:45:45,607 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 16:45:45,608 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 785 transitions. [2019-10-02 16:45:45,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-02 16:45:45,613 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:45:45,613 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:45:45,614 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:45:45,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:45:45,614 INFO L82 PathProgramCache]: Analyzing trace with hash -492629722, now seen corresponding path program 1 times [2019-10-02 16:45:45,614 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:45:45,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:45:45,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:45:45,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:45:45,616 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:45:45,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:45:45,763 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:45:45,764 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:45:45,764 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:45:45,764 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:45:45,765 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:45:45,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:45:45,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:45:45,765 INFO L87 Difference]: Start difference. First operand 556 states and 785 transitions. Second operand 3 states. [2019-10-02 16:45:46,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:45:46,304 INFO L93 Difference]: Finished difference Result 963 states and 1283 transitions. [2019-10-02 16:45:46,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:45:46,305 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2019-10-02 16:45:46,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:45:46,313 INFO L225 Difference]: With dead ends: 963 [2019-10-02 16:45:46,313 INFO L226 Difference]: Without dead ends: 963 [2019-10-02 16:45:46,313 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 16:45:46,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2019-10-02 16:45:46,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 961. [2019-10-02 16:45:46,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 961 states. [2019-10-02 16:45:46,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1281 transitions. [2019-10-02 16:45:46,367 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1281 transitions. Word has length 94 [2019-10-02 16:45:46,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:45:46,368 INFO L475 AbstractCegarLoop]: Abstraction has 961 states and 1281 transitions. [2019-10-02 16:45:46,369 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:45:46,369 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1281 transitions. [2019-10-02 16:45:46,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-10-02 16:45:46,374 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:45:46,375 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:45:46,375 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:45:46,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:45:46,375 INFO L82 PathProgramCache]: Analyzing trace with hash 994242435, now seen corresponding path program 1 times [2019-10-02 16:45:46,376 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:45:46,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:45:46,377 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:45:46,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:45:46,378 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:45:46,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:45:46,532 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:45:46,532 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 16:45:46,532 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 16:45:46,533 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 115 with the following transitions: [2019-10-02 16:45:46,536 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [17], [18], [22], [26], [30], [34], [38], [42], [46], [50], [53], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [309], [311], [757], [761], [770], [774], [776], [781], [782], [783], [785], [786] [2019-10-02 16:45:46,615 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 16:45:46,615 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)