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/Problem16_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 19:57:05,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 19:57:05,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 19:57:05,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 19:57:05,528 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 19:57:05,554 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 19:57:05,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 19:57:05,555 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 19:57:05,555 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 19:57:05,555 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 19:57:05,556 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 19:57:05,556 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 19:57:05,556 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 19:57:05,556 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 19:57:05,557 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 19:57:05,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 19:57:05,557 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 19:57:05,557 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 19:57:05,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 19:57:05,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 19:57:05,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 19:57:05,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 19:57:05,558 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 19:57:05,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 19:57:05,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 19:57:05,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 19:57:05,559 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 19:57:05,559 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 19:57:05,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 19:57:05,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 19:57:05,560 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 19:57:05,560 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 19:57:05,560 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 19:57:05,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 19:57:05,561 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 19:57:05,590 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 19:57:05,601 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 19:57:05,605 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 19:57:05,606 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 19:57:05,607 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 19:57:05,607 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label12.c [2019-09-09 19:57:05,668 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/063af9c4f/af30653c1ce94fefbb0d5b9c45ac16e5/FLAG4b6a7deaf [2019-09-09 19:57:06,244 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 19:57:06,244 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label12.c [2019-09-09 19:57:06,262 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/063af9c4f/af30653c1ce94fefbb0d5b9c45ac16e5/FLAG4b6a7deaf [2019-09-09 19:57:06,411 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/063af9c4f/af30653c1ce94fefbb0d5b9c45ac16e5 [2019-09-09 19:57:06,420 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 19:57:06,421 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 19:57:06,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 19:57:06,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 19:57:06,430 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 19:57:06,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 07:57:06" (1/1) ... [2019-09-09 19:57:06,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@424c430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:57:06, skipping insertion in model container [2019-09-09 19:57:06,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 07:57:06" (1/1) ... [2019-09-09 19:57:06,441 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 19:57:06,515 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 19:57:07,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 19:57:07,384 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 19:57:07,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 19:57:07,706 INFO L192 MainTranslator]: Completed translation [2019-09-09 19:57:07,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:57:07 WrapperNode [2019-09-09 19:57:07,707 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 19:57:07,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 19:57:07,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 19:57:07,708 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 19:57:07,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:57:07" (1/1) ... [2019-09-09 19:57:07,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:57:07" (1/1) ... [2019-09-09 19:57:07,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:57:07" (1/1) ... [2019-09-09 19:57:07,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:57:07" (1/1) ... [2019-09-09 19:57:07,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:57:07" (1/1) ... [2019-09-09 19:57:07,848 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:57:07" (1/1) ... [2019-09-09 19:57:07,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:57:07" (1/1) ... [2019-09-09 19:57:07,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 19:57:07,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 19:57:07,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 19:57:07,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 19:57:07,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:57:07" (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 19:57:07,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 19:57:07,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 19:57:07,952 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 19:57:07,953 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-09 19:57:07,953 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 19:57:07,953 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 19:57:07,953 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-09 19:57:07,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 19:57:07,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 19:57:07,954 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 19:57:07,954 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 19:57:07,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 19:57:07,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 19:57:10,248 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 19:57:10,249 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 19:57:10,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 07:57:10 BoogieIcfgContainer [2019-09-09 19:57:10,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 19:57:10,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 19:57:10,257 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 19:57:10,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 19:57:10,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 07:57:06" (1/3) ... [2019-09-09 19:57:10,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c6074f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 07:57:10, skipping insertion in model container [2019-09-09 19:57:10,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 07:57:07" (2/3) ... [2019-09-09 19:57:10,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c6074f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 07:57:10, skipping insertion in model container [2019-09-09 19:57:10,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 07:57:10" (3/3) ... [2019-09-09 19:57:10,267 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label12.c [2019-09-09 19:57:10,277 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 19:57:10,287 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 19:57:10,304 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 19:57:10,336 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 19:57:10,336 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 19:57:10,336 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 19:57:10,337 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 19:57:10,337 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 19:57:10,337 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 19:57:10,337 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 19:57:10,337 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 19:57:10,369 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2019-09-09 19:57:10,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-09-09 19:57:10,381 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 19:57:10,382 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] [2019-09-09 19:57:10,384 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 19:57:10,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 19:57:10,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1524372618, now seen corresponding path program 1 times [2019-09-09 19:57:10,392 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 19:57:10,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 19:57:10,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 19:57:10,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 19:57:10,444 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 19:57:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 19:57:10,667 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 19:57:10,670 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 19:57:10,670 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 19:57:10,670 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 19:57:10,676 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 19:57:10,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 19:57:10,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 19:57:10,693 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 3 states. [2019-09-09 19:57:13,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 19:57:13,594 INFO L93 Difference]: Finished difference Result 750 states and 1301 transitions. [2019-09-09 19:57:13,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 19:57:13,595 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2019-09-09 19:57:13,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 19:57:13,622 INFO L225 Difference]: With dead ends: 750 [2019-09-09 19:57:13,623 INFO L226 Difference]: Without dead ends: 682 [2019-09-09 19:57:13,624 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 19:57:13,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2019-09-09 19:57:13,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2019-09-09 19:57:13,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 682 states. [2019-09-09 19:57:13,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1184 transitions. [2019-09-09 19:57:13,728 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1184 transitions. Word has length 45 [2019-09-09 19:57:13,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 19:57:13,728 INFO L475 AbstractCegarLoop]: Abstraction has 682 states and 1184 transitions. [2019-09-09 19:57:13,729 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 19:57:13,730 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1184 transitions. [2019-09-09 19:57:13,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-09-09 19:57:13,737 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 19:57:13,737 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:13,738 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 19:57:13,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 19:57:13,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1650431575, now seen corresponding path program 1 times [2019-09-09 19:57:13,739 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 19:57:13,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 19:57:13,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 19:57:13,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 19:57:13,742 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 19:57:13,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 19:57:13,991 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 19:57:13,992 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 19:57:13,992 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-09 19:57:13,992 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 19:57:13,995 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-09 19:57:13,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-09 19:57:13,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-09 19:57:13,996 INFO L87 Difference]: Start difference. First operand 682 states and 1184 transitions. Second operand 5 states. [2019-09-09 19:57:16,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 19:57:16,935 INFO L93 Difference]: Finished difference Result 1390 states and 2310 transitions. [2019-09-09 19:57:16,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 19:57:16,936 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2019-09-09 19:57:16,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 19:57:16,947 INFO L225 Difference]: With dead ends: 1390 [2019-09-09 19:57:16,948 INFO L226 Difference]: Without dead ends: 1390 [2019-09-09 19:57:16,949 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-09 19:57:16,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2019-09-09 19:57:17,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 1372. [2019-09-09 19:57:17,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1372 states. [2019-09-09 19:57:17,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 2268 transitions. [2019-09-09 19:57:17,028 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 2268 transitions. Word has length 114 [2019-09-09 19:57:17,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 19:57:17,030 INFO L475 AbstractCegarLoop]: Abstraction has 1372 states and 2268 transitions. [2019-09-09 19:57:17,030 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-09 19:57:17,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 2268 transitions. [2019-09-09 19:57:17,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-09-09 19:57:17,036 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 19:57:17,036 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:17,036 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 19:57:17,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 19:57:17,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1950133058, now seen corresponding path program 1 times [2019-09-09 19:57:17,041 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 19:57:17,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 19:57:17,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 19:57:17,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 19:57:17,042 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 19:57:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 19:57:17,186 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 19:57:17,187 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 19:57:17,187 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 19:57:17,187 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 19:57:17,188 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 19:57:17,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 19:57:17,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 19:57:17,189 INFO L87 Difference]: Start difference. First operand 1372 states and 2268 transitions. Second operand 6 states. [2019-09-09 19:57:20,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 19:57:20,258 INFO L93 Difference]: Finished difference Result 2106 states and 3333 transitions. [2019-09-09 19:57:20,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 19:57:20,259 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2019-09-09 19:57:20,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 19:57:20,281 INFO L225 Difference]: With dead ends: 2106 [2019-09-09 19:57:20,282 INFO L226 Difference]: Without dead ends: 2106 [2019-09-09 19:57:20,287 INFO L628 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 [2019-09-09 19:57:20,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2019-09-09 19:57:20,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 2081. [2019-09-09 19:57:20,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2081 states. [2019-09-09 19:57:20,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2081 states to 2081 states and 3263 transitions. [2019-09-09 19:57:20,404 INFO L78 Accepts]: Start accepts. Automaton has 2081 states and 3263 transitions. Word has length 143 [2019-09-09 19:57:20,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 19:57:20,407 INFO L475 AbstractCegarLoop]: Abstraction has 2081 states and 3263 transitions. [2019-09-09 19:57:20,407 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 19:57:20,407 INFO L276 IsEmpty]: Start isEmpty. Operand 2081 states and 3263 transitions. [2019-09-09 19:57:20,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-09-09 19:57:20,414 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 19:57:20,415 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:20,415 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 19:57:20,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 19:57:20,416 INFO L82 PathProgramCache]: Analyzing trace with hash 903433606, now seen corresponding path program 1 times [2019-09-09 19:57:20,416 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 19:57:20,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 19:57:20,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 19:57:20,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 19:57:20,418 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 19:57:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 19:57:20,647 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 19:57:20,647 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 19:57:20,648 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 19:57:20,648 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 19:57:20,648 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 19:57:20,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 19:57:20,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 19:57:20,649 INFO L87 Difference]: Start difference. First operand 2081 states and 3263 transitions. Second operand 6 states. [2019-09-09 19:57:23,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 19:57:23,643 INFO L93 Difference]: Finished difference Result 3166 states and 4200 transitions. [2019-09-09 19:57:23,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 19:57:23,645 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2019-09-09 19:57:23,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 19:57:23,664 INFO L225 Difference]: With dead ends: 3166 [2019-09-09 19:57:23,664 INFO L226 Difference]: Without dead ends: 3166 [2019-09-09 19:57:23,665 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-09 19:57:23,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3166 states. [2019-09-09 19:57:23,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3166 to 3140. [2019-09-09 19:57:23,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3140 states. [2019-09-09 19:57:23,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3140 states to 3140 states and 4128 transitions. [2019-09-09 19:57:23,740 INFO L78 Accepts]: Start accepts. Automaton has 3140 states and 4128 transitions. Word has length 161 [2019-09-09 19:57:23,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 19:57:23,741 INFO L475 AbstractCegarLoop]: Abstraction has 3140 states and 4128 transitions. [2019-09-09 19:57:23,741 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 19:57:23,741 INFO L276 IsEmpty]: Start isEmpty. Operand 3140 states and 4128 transitions. [2019-09-09 19:57:23,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2019-09-09 19:57:23,744 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 19:57:23,744 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 19:57:23,744 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 19:57:23,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 19:57:23,745 INFO L82 PathProgramCache]: Analyzing trace with hash 582436338, now seen corresponding path program 1 times [2019-09-09 19:57:23,745 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 19:57:23,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 19:57:23,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 19:57:23,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 19:57:23,746 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 19:57:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 19:57:23,992 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 104 proven. 37 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-09 19:57:23,993 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 19:57:23,993 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 19:57:23,994 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 244 with the following transitions: [2019-09-09 19:57:23,999 INFO L207 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [447], [449], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [1552], [1556], [1565], [1569], [1571], [1578], [1579], [1580], [1582], [1583] [2019-09-09 19:57:24,098 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 19:57:24,099 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-09 19:57:32,851 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-09 19:57:32,853 INFO L272 AbstractInterpreter]: Visited 134 different actions 134 times. Never merged. Never widened. Performed 305 root evaluator evaluations with a maximum evaluation depth of 14. Performed 305 inverse root evaluator evaluations with a maximum inverse evaluation depth of 14. Never found a fixpoint. Largest state had 24 variables. [2019-09-09 19:57:32,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 19:57:32,858 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-09 19:57:39,323 INFO L227 lantSequenceWeakener]: Weakened 224 states. On average, predicates are now at 77.95% of their original sizes. [2019-09-09 19:57:39,324 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-09 19:57:39,424 INFO L420 sIntCurrentIteration]: We unified 242 AI predicates to 242 [2019-09-09 19:57:39,424 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-09 19:57:39,425 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-09 19:57:39,425 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [5] total 15 [2019-09-09 19:57:39,425 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 19:57:39,426 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-09 19:57:39,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-09 19:57:39,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2019-09-09 19:57:39,427 INFO L87 Difference]: Start difference. First operand 3140 states and 4128 transitions. Second operand 12 states. [2019-09-09 19:57:59,613 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.