/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_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:49:00,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:49:00,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:49:00,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-06 22:49:00,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:49:00,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:49:00,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:49:00,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:49:00,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:49:00,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:49:00,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:49:00,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:49:00,346 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:49:00,347 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:49:00,350 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:49:00,351 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:49:00,353 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:49:00,360 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:49:00,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:49:00,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:49:00,362 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 22:49:00,376 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:49:00,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:49:00,377 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:49:00,377 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:49:00,378 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:49:00,378 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:49:00,378 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:49:00,378 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:49:00,378 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:49:00,379 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:49:00,379 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:49:00,379 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:49:00,379 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:49:00,379 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:49:00,380 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:49:00,380 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:49:00,380 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:49:00,380 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:49:00,380 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:49:00,381 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:49:00,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:49:00,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:49:00,381 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:49:00,381 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:49:00,382 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:49:00,382 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:49:00,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:49:00,382 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:49:00,382 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 22:49:00,667 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:49:00,692 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:49:00,695 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:49:00,697 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:49:00,697 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:49:00,698 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label30.c [2019-11-06 22:49:00,771 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c88b454ca/1844a5ae53c84a11981686b7c5bea73a/FLAG9a3bb7a17 [2019-11-06 22:49:01,590 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:49:01,593 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label30.c [2019-11-06 22:49:01,634 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c88b454ca/1844a5ae53c84a11981686b7c5bea73a/FLAG9a3bb7a17 [2019-11-06 22:49:02,100 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c88b454ca/1844a5ae53c84a11981686b7c5bea73a [2019-11-06 22:49:02,109 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:49:02,111 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:49:02,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:49:02,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:49:02,116 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:49:02,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:49:02" (1/1) ... [2019-11-06 22:49:02,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b7df685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:02, skipping insertion in model container [2019-11-06 22:49:02,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:49:02" (1/1) ... [2019-11-06 22:49:02,127 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:49:02,288 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:49:03,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:49:03,689 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:49:04,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:49:04,306 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:49:04,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:04 WrapperNode [2019-11-06 22:49:04,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:49:04,308 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:49:04,308 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:49:04,308 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:49:04,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:04" (1/1) ... [2019-11-06 22:49:04,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:04" (1/1) ... [2019-11-06 22:49:04,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:04" (1/1) ... [2019-11-06 22:49:04,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:04" (1/1) ... [2019-11-06 22:49:04,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:04" (1/1) ... [2019-11-06 22:49:04,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:04" (1/1) ... [2019-11-06 22:49:04,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:04" (1/1) ... [2019-11-06 22:49:04,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:49:04,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:49:04,598 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:49:04,598 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:49:04,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:04" (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 22:49:04,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:49:04,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:49:04,668 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 22:49:04,668 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-11-06 22:49:04,668 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-11-06 22:49:04,668 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-11-06 22:49:04,668 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:49:04,669 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 22:49:04,669 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-11-06 22:49:04,670 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-11-06 22:49:04,671 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-11-06 22:49:04,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:49:04,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:49:04,672 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 22:49:04,672 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:49:04,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:49:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:49:09,807 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:49:09,807 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 22:49:09,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:49:09 BoogieIcfgContainer [2019-11-06 22:49:09,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:49:09,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:49:09,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:49:09,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:49:09,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:49:02" (1/3) ... [2019-11-06 22:49:09,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fd61db3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:49:09, skipping insertion in model container [2019-11-06 22:49:09,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:04" (2/3) ... [2019-11-06 22:49:09,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fd61db3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:49:09, skipping insertion in model container [2019-11-06 22:49:09,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:49:09" (3/3) ... [2019-11-06 22:49:09,820 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label30.c [2019-11-06 22:49:09,834 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:49:09,845 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:49:09,858 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:49:09,897 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:49:09,897 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:49:09,898 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:49:09,898 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:49:09,898 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:49:09,898 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:49:09,898 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:49:09,898 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:49:09,944 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2019-11-06 22:49:09,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-11-06 22:49:09,950 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:49:09,951 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] [2019-11-06 22:49:09,953 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:49:09,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:49:09,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1416358702, now seen corresponding path program 1 times [2019-11-06 22:49:09,966 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:49:09,966 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647097972] [2019-11-06 22:49:09,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:49:10,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:49:10,226 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 22:49:10,226 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647097972] [2019-11-06 22:49:10,227 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:49:10,228 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:49:10,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127951072] [2019-11-06 22:49:10,234 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:49:10,235 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:49:10,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:49:10,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:49:10,253 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2019-11-06 22:49:20,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:49:20,442 INFO L93 Difference]: Finished difference Result 3230 states and 6251 transitions. [2019-11-06 22:49:20,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:49:20,444 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2019-11-06 22:49:20,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:49:20,481 INFO L225 Difference]: With dead ends: 3230 [2019-11-06 22:49:20,482 INFO L226 Difference]: Without dead ends: 2309 [2019-11-06 22:49:20,491 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 22:49:20,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2309 states. [2019-11-06 22:49:20,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2309 to 2309. [2019-11-06 22:49:20,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2309 states. [2019-11-06 22:49:20,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 3659 transitions. [2019-11-06 22:49:20,652 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 3659 transitions. Word has length 31 [2019-11-06 22:49:20,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:49:20,653 INFO L462 AbstractCegarLoop]: Abstraction has 2309 states and 3659 transitions. [2019-11-06 22:49:20,653 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:49:20,653 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 3659 transitions. [2019-11-06 22:49:20,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-11-06 22:49:20,659 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:49:20,659 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:49:20,660 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:49:20,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:49:20,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1680241966, now seen corresponding path program 1 times [2019-11-06 22:49:20,660 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:49:20,661 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061777988] [2019-11-06 22:49:20,661 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:49:20,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:49:20,957 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:49:20,958 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061777988] [2019-11-06 22:49:20,959 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:49:20,959 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:49:20,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737026258] [2019-11-06 22:49:20,963 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:49:20,963 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:49:20,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:49:20,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:49:20,964 INFO L87 Difference]: Start difference. First operand 2309 states and 3659 transitions. Second operand 6 states. [2019-11-06 22:49:28,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:49:28,946 INFO L93 Difference]: Finished difference Result 7051 states and 11329 transitions. [2019-11-06 22:49:28,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:49:28,949 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2019-11-06 22:49:28,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:49:28,984 INFO L225 Difference]: With dead ends: 7051 [2019-11-06 22:49:28,984 INFO L226 Difference]: Without dead ends: 4748 [2019-11-06 22:49:28,991 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:49:28,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4748 states. [2019-11-06 22:49:29,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4748 to 4707. [2019-11-06 22:49:29,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4707 states. [2019-11-06 22:49:29,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4707 states to 4707 states and 7110 transitions. [2019-11-06 22:49:29,140 INFO L78 Accepts]: Start accepts. Automaton has 4707 states and 7110 transitions. Word has length 111 [2019-11-06 22:49:29,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:49:29,141 INFO L462 AbstractCegarLoop]: Abstraction has 4707 states and 7110 transitions. [2019-11-06 22:49:29,141 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:49:29,141 INFO L276 IsEmpty]: Start isEmpty. Operand 4707 states and 7110 transitions. [2019-11-06 22:49:29,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-11-06 22:49:29,152 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:49:29,152 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:49:29,153 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:49:29,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:49:29,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1139503550, now seen corresponding path program 1 times [2019-11-06 22:49:29,154 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:49:29,154 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424304008] [2019-11-06 22:49:29,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:49:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:49:29,444 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:49:29,444 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424304008] [2019-11-06 22:49:29,444 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:49:29,445 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:49:29,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576697465] [2019-11-06 22:49:29,446 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:49:29,446 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:49:29,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:49:29,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:49:29,447 INFO L87 Difference]: Start difference. First operand 4707 states and 7110 transitions. Second operand 6 states. [2019-11-06 22:49:37,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:49:37,289 INFO L93 Difference]: Finished difference Result 14344 states and 22538 transitions. [2019-11-06 22:49:37,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:49:37,292 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2019-11-06 22:49:37,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:49:37,350 INFO L225 Difference]: With dead ends: 14344 [2019-11-06 22:49:37,351 INFO L226 Difference]: Without dead ends: 9643 [2019-11-06 22:49:37,364 INFO L630 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 [2019-11-06 22:49:37,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9643 states. [2019-11-06 22:49:37,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9643 to 9566. [2019-11-06 22:49:37,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9566 states. [2019-11-06 22:49:37,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9566 states to 9566 states and 14513 transitions. [2019-11-06 22:49:37,653 INFO L78 Accepts]: Start accepts. Automaton has 9566 states and 14513 transitions. Word has length 119 [2019-11-06 22:49:37,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:49:37,653 INFO L462 AbstractCegarLoop]: Abstraction has 9566 states and 14513 transitions. [2019-11-06 22:49:37,654 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:49:37,654 INFO L276 IsEmpty]: Start isEmpty. Operand 9566 states and 14513 transitions. [2019-11-06 22:49:37,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-11-06 22:49:37,656 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:49:37,656 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:49:37,657 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:49:37,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:49:37,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1285051767, now seen corresponding path program 1 times [2019-11-06 22:49:37,657 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:49:37,658 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866253438] [2019-11-06 22:49:37,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:49:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat