/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label16.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:48:21,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:48:21,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:48:21,390 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-06 22:48:21,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:48:21,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:48:21,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:48:21,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:48:21,423 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:48:21,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:48:21,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:48:21,432 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:48:21,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:48:21,438 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:48:21,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:48:21,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:48:21,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:48:21,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:48:21,460 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:48:21,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:48:21,461 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 22:48:21,482 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:48:21,482 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:48:21,484 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:48:21,485 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:48:21,485 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:48:21,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:48:21,486 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:48:21,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:48:21,486 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:48:21,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:48:21,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:48:21,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:48:21,488 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:48:21,488 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:48:21,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:48:21,489 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:48:21,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:48:21,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:48:21,489 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:48:21,490 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:48:21,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:48:21,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:48:21,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:48:21,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:48:21,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:48:21,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:48:21,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:48:21,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:48:21,491 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-06 22:48:21,796 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:48:21,808 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:48:21,812 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:48:21,813 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:48:21,814 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:48:21,814 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label16.c [2019-11-06 22:48:21,891 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/178f6c691/14088c038b1c49e9a62c3eeb1b907718/FLAGe8a20c994 [2019-11-06 22:48:22,619 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:48:22,620 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label16.c [2019-11-06 22:48:22,645 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/178f6c691/14088c038b1c49e9a62c3eeb1b907718/FLAGe8a20c994 [2019-11-06 22:48:22,745 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/178f6c691/14088c038b1c49e9a62c3eeb1b907718 [2019-11-06 22:48:22,756 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:48:22,758 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:48:22,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:48:22,760 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:48:22,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:48:22,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:48:22" (1/1) ... [2019-11-06 22:48:22,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73d002de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:22, skipping insertion in model container [2019-11-06 22:48:22,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:48:22" (1/1) ... [2019-11-06 22:48:22,779 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:48:22,931 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:48:24,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:48:24,403 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:48:25,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:48:25,068 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:48:25,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:25 WrapperNode [2019-11-06 22:48:25,069 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:48:25,070 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:48:25,070 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:48:25,070 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:48:25,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:25" (1/1) ... [2019-11-06 22:48:25,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:25" (1/1) ... [2019-11-06 22:48:25,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:25" (1/1) ... [2019-11-06 22:48:25,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:25" (1/1) ... [2019-11-06 22:48:25,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:25" (1/1) ... [2019-11-06 22:48:25,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:25" (1/1) ... [2019-11-06 22:48:25,348 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:25" (1/1) ... [2019-11-06 22:48:25,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:48:25,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:48:25,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:48:25,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:48:25,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:48:25,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:48:25,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:48:25,453 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 22:48:25,453 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-11-06 22:48:25,454 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-11-06 22:48:25,454 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-11-06 22:48:25,455 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:48:25,455 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 22:48:25,455 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-11-06 22:48:25,457 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-11-06 22:48:25,457 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-11-06 22:48:25,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:48:25,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:48:25,458 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 22:48:25,459 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:48:25,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:48:25,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:48:31,523 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:48:31,523 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 22:48:31,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:48:31 BoogieIcfgContainer [2019-11-06 22:48:31,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:48:31,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:48:31,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:48:31,531 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:48:31,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:48:22" (1/3) ... [2019-11-06 22:48:31,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5274eb26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:48:31, skipping insertion in model container [2019-11-06 22:48:31,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:25" (2/3) ... [2019-11-06 22:48:31,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5274eb26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:48:31, skipping insertion in model container [2019-11-06 22:48:31,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:48:31" (3/3) ... [2019-11-06 22:48:31,535 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label16.c [2019-11-06 22:48:31,546 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:48:31,555 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:48:31,568 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:48:31,602 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:48:31,602 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:48:31,602 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:48:31,602 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:48:31,603 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:48:31,603 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:48:31,603 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:48:31,603 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:48:31,642 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2019-11-06 22:48:31,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-11-06 22:48:31,655 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:48:31,656 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:48:31,658 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:48:31,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:48:31,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1315979506, now seen corresponding path program 1 times [2019-11-06 22:48:31,675 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:48:31,676 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496412107] [2019-11-06 22:48:31,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:48:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:48:32,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:48:32,031 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496412107] [2019-11-06 22:48:32,032 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:48:32,032 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:48:32,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097524819] [2019-11-06 22:48:32,039 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:48:32,041 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:48:32,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:48:32,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:48:32,059 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 3 states. [2019-11-06 22:48:38,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:48:38,019 INFO L93 Difference]: Finished difference Result 2443 states and 4697 transitions. [2019-11-06 22:48:38,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:48:38,021 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2019-11-06 22:48:38,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:48:38,064 INFO L225 Difference]: With dead ends: 2443 [2019-11-06 22:48:38,064 INFO L226 Difference]: Without dead ends: 1542 [2019-11-06 22:48:38,078 INFO L630 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 [2019-11-06 22:48:38,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2019-11-06 22:48:38,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1542. [2019-11-06 22:48:38,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1542 states. [2019-11-06 22:48:38,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2822 transitions. [2019-11-06 22:48:38,243 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2822 transitions. Word has length 71 [2019-11-06 22:48:38,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:48:38,244 INFO L462 AbstractCegarLoop]: Abstraction has 1542 states and 2822 transitions. [2019-11-06 22:48:38,245 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:48:38,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2822 transitions. [2019-11-06 22:48:38,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-11-06 22:48:38,262 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:48:38,263 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:48:38,263 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:48:38,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:48:38,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1550888775, now seen corresponding path program 1 times [2019-11-06 22:48:38,264 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:48:38,264 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952534210] [2019-11-06 22:48:38,264 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:48:38,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:48:38,646 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:48:38,647 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952534210] [2019-11-06 22:48:38,647 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:48:38,647 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:48:38,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140146992] [2019-11-06 22:48:38,650 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:48:38,651 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:48:38,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:48:38,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:48:38,652 INFO L87 Difference]: Start difference. First operand 1542 states and 2822 transitions. Second operand 5 states. [2019-11-06 22:48:46,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:48:46,332 INFO L93 Difference]: Finished difference Result 3912 states and 7104 transitions. [2019-11-06 22:48:46,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:48:46,333 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2019-11-06 22:48:46,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:48:46,348 INFO L225 Difference]: With dead ends: 3912 [2019-11-06 22:48:46,348 INFO L226 Difference]: Without dead ends: 2376 [2019-11-06 22:48:46,352 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:48:46,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2376 states. [2019-11-06 22:48:46,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2376 to 2350. [2019-11-06 22:48:46,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2350 states. [2019-11-06 22:48:46,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2350 states to 2350 states and 3968 transitions. [2019-11-06 22:48:46,415 INFO L78 Accepts]: Start accepts. Automaton has 2350 states and 3968 transitions. Word has length 144 [2019-11-06 22:48:46,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:48:46,415 INFO L462 AbstractCegarLoop]: Abstraction has 2350 states and 3968 transitions. [2019-11-06 22:48:46,416 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:48:46,416 INFO L276 IsEmpty]: Start isEmpty. Operand 2350 states and 3968 transitions. [2019-11-06 22:48:46,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-11-06 22:48:46,418 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:48:46,418 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:48:46,419 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:48:46,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:48:46,419 INFO L82 PathProgramCache]: Analyzing trace with hash 318484651, now seen corresponding path program 1 times [2019-11-06 22:48:46,419 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:48:46,420 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882093007] [2019-11-06 22:48:46,420 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:48:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:48:46,528 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:48:46,529 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882093007] [2019-11-06 22:48:46,529 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:48:46,529 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:48:46,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363081059] [2019-11-06 22:48:46,530 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:48:46,531 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:48:46,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:48:46,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:48:46,531 INFO L87 Difference]: Start difference. First operand 2350 states and 3968 transitions. Second operand 4 states. [2019-11-06 22:48:55,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:48:55,622 INFO L93 Difference]: Finished difference Result 9360 states and 16172 transitions. [2019-11-06 22:48:55,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:48:55,623 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2019-11-06 22:48:55,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:48:55,659 INFO L225 Difference]: With dead ends: 9360 [2019-11-06 22:48:55,660 INFO L226 Difference]: Without dead ends: 7016 [2019-11-06 22:48:55,666 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:48:55,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7016 states. [2019-11-06 22:48:55,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7016 to 7016. [2019-11-06 22:48:55,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7016 states. [2019-11-06 22:48:55,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7016 states to 7016 states and 11456 transitions. [2019-11-06 22:48:55,897 INFO L78 Accepts]: Start accepts. Automaton has 7016 states and 11456 transitions. Word has length 146 [2019-11-06 22:48:55,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:48:55,899 INFO L462 AbstractCegarLoop]: Abstraction has 7016 states and 11456 transitions. [2019-11-06 22:48:55,899 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:48:55,899 INFO L276 IsEmpty]: Start isEmpty. Operand 7016 states and 11456 transitions. [2019-11-06 22:48:55,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-11-06 22:48:55,905 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:48:55,905 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-11-06 22:48:55,906 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:48:55,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:48:55,906 INFO L82 PathProgramCache]: Analyzing trace with hash 702612695, now seen corresponding path program 1 times [2019-11-06 22:48:55,906 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:48:55,907 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726909405] [2019-11-06 22:48:55,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:48:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:48:56,152 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:48:56,153 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726909405] [2019-11-06 22:48:56,154 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:48:56,154 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:48:56,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481300659] [2019-11-06 22:48:56,155 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:48:56,156 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:48:56,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:48:56,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:48:56,157 INFO L87 Difference]: Start difference. First operand 7016 states and 11456 transitions. Second operand 6 states.