/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_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:48:44,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:48:44,522 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:48:44,534 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-06 22:48:44,544 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:48:44,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:48:44,546 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:48:44,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:48:44,548 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:48:44,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:48:44,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:48:44,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:48:44,554 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:48:44,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:48:44,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:48:44,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:48:44,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:48:44,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:48:44,569 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:48:44,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:48:44,571 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 22:48:44,585 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:48:44,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:48:44,587 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:48:44,587 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:48:44,587 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:48:44,587 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:48:44,588 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:48:44,588 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:48:44,588 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:48:44,588 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:48:44,588 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:48:44,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:48:44,589 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:48:44,589 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:48:44,589 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:48:44,589 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:48:44,590 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:48:44,590 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:48:44,590 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:48:44,590 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:48:44,590 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:48:44,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:48:44,591 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:48:44,591 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:48:44,591 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:48:44,591 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:48:44,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:48:44,592 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:48:44,592 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 22:48:44,858 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:48:44,871 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:48:44,874 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:48:44,875 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:48:44,876 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:48:44,877 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label22.c [2019-11-06 22:48:44,953 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65db90aec/24a689d4cb124a108251af495705864c/FLAGfa091022e [2019-11-06 22:48:45,776 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:48:45,779 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label22.c [2019-11-06 22:48:45,816 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65db90aec/24a689d4cb124a108251af495705864c/FLAGfa091022e [2019-11-06 22:48:46,333 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65db90aec/24a689d4cb124a108251af495705864c [2019-11-06 22:48:46,343 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:48:46,345 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:48:46,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:48:46,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:48:46,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:48:46,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:48:46" (1/1) ... [2019-11-06 22:48:46,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e31c226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:46, skipping insertion in model container [2019-11-06 22:48:46,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:48:46" (1/1) ... [2019-11-06 22:48:46,365 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:48:46,513 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:48:48,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:48:48,376 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:48:48,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:48:48,998 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:48:48,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:48 WrapperNode [2019-11-06 22:48:48,999 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:48:49,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:48:49,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:48:49,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:48:49,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:48" (1/1) ... [2019-11-06 22:48:49,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:48" (1/1) ... [2019-11-06 22:48:49,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:48" (1/1) ... [2019-11-06 22:48:49,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:48" (1/1) ... [2019-11-06 22:48:49,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:48" (1/1) ... [2019-11-06 22:48:49,236 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:48" (1/1) ... [2019-11-06 22:48:49,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:48" (1/1) ... [2019-11-06 22:48:49,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:48:49,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:48:49,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:48:49,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:48:49,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:48" (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 22:48:49,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:48:49,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:48:49,366 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 22:48:49,366 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-11-06 22:48:49,366 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-11-06 22:48:49,366 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-11-06 22:48:49,367 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:48:49,367 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 22:48:49,367 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-11-06 22:48:49,367 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-11-06 22:48:49,367 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-11-06 22:48:49,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:48:49,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:48:49,368 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 22:48:49,368 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:48:49,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:48:49,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:48:54,078 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:48:54,078 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 22:48:54,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:48:54 BoogieIcfgContainer [2019-11-06 22:48:54,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:48:54,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:48:54,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:48:54,084 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:48:54,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:48:46" (1/3) ... [2019-11-06 22:48:54,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@368dbd99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:48:54, skipping insertion in model container [2019-11-06 22:48:54,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:48" (2/3) ... [2019-11-06 22:48:54,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@368dbd99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:48:54, skipping insertion in model container [2019-11-06 22:48:54,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:48:54" (3/3) ... [2019-11-06 22:48:54,088 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label22.c [2019-11-06 22:48:54,098 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:48:54,107 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:48:54,120 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:48:54,160 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:48:54,161 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:48:54,161 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:48:54,161 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:48:54,161 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:48:54,161 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:48:54,161 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:48:54,161 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:48:54,204 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2019-11-06 22:48:54,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-11-06 22:48:54,218 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:48:54,219 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] [2019-11-06 22:48:54,221 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:48:54,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:48:54,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1204475243, now seen corresponding path program 1 times [2019-11-06 22:48:54,236 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:48:54,237 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274353938] [2019-11-06 22:48:54,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:48:54,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:48:54,595 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 22:48:54,596 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274353938] [2019-11-06 22:48:54,597 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:48:54,597 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:48:54,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834528229] [2019-11-06 22:48:54,603 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:48:54,605 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:48:54,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:48:54,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:48:54,623 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 3 states. [2019-11-06 22:49:00,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:49:00,079 INFO L93 Difference]: Finished difference Result 2443 states and 4697 transitions. [2019-11-06 22:49:00,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:49:00,081 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2019-11-06 22:49:00,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:49:00,138 INFO L225 Difference]: With dead ends: 2443 [2019-11-06 22:49:00,138 INFO L226 Difference]: Without dead ends: 1542 [2019-11-06 22:49:00,154 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 22:49:00,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2019-11-06 22:49:00,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1542. [2019-11-06 22:49:00,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1542 states. [2019-11-06 22:49:00,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2750 transitions. [2019-11-06 22:49:00,365 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2750 transitions. Word has length 70 [2019-11-06 22:49:00,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:49:00,367 INFO L462 AbstractCegarLoop]: Abstraction has 1542 states and 2750 transitions. [2019-11-06 22:49:00,367 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:49:00,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2750 transitions. [2019-11-06 22:49:00,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-11-06 22:49:00,385 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:49:00,388 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:49:00,388 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:49:00,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:49:00,389 INFO L82 PathProgramCache]: Analyzing trace with hash 362891361, now seen corresponding path program 1 times [2019-11-06 22:49:00,390 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:49:00,390 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494068004] [2019-11-06 22:49:00,390 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:49:00,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:49:00,685 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:49:00,686 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494068004] [2019-11-06 22:49:00,687 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:49:00,687 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:49:00,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519443231] [2019-11-06 22:49:00,689 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:49:00,690 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:49:00,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:49:00,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:49:00,691 INFO L87 Difference]: Start difference. First operand 1542 states and 2750 transitions. Second operand 5 states. [2019-11-06 22:49:07,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:49:07,650 INFO L93 Difference]: Finished difference Result 4690 states and 8403 transitions. [2019-11-06 22:49:07,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:49:07,651 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2019-11-06 22:49:07,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:49:07,676 INFO L225 Difference]: With dead ends: 4690 [2019-11-06 22:49:07,677 INFO L226 Difference]: Without dead ends: 3154 [2019-11-06 22:49:07,681 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 22:49:07,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3154 states. [2019-11-06 22:49:07,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3154 to 3122. [2019-11-06 22:49:07,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3122 states. [2019-11-06 22:49:07,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3122 states to 3122 states and 5336 transitions. [2019-11-06 22:49:07,797 INFO L78 Accepts]: Start accepts. Automaton has 3122 states and 5336 transitions. Word has length 143 [2019-11-06 22:49:07,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:49:07,799 INFO L462 AbstractCegarLoop]: Abstraction has 3122 states and 5336 transitions. [2019-11-06 22:49:07,799 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:49:07,799 INFO L276 IsEmpty]: Start isEmpty. Operand 3122 states and 5336 transitions. [2019-11-06 22:49:07,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-11-06 22:49:07,807 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:49:07,808 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, 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 22:49:07,808 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:49:07,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:49:07,809 INFO L82 PathProgramCache]: Analyzing trace with hash 2056007356, now seen corresponding path program 1 times [2019-11-06 22:49:07,809 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:49:07,810 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018961329] [2019-11-06 22:49:07,811 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:49:07,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:49:08,070 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:49:08,070 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018961329] [2019-11-06 22:49:08,070 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:49:08,071 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:49:08,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364729206] [2019-11-06 22:49:08,072 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:49:08,072 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:49:08,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:49:08,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:49:08,073 INFO L87 Difference]: Start difference. First operand 3122 states and 5336 transitions. Second operand 6 states. [2019-11-06 22:49:15,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:49:15,687 INFO L93 Difference]: Finished difference Result 9491 states and 16483 transitions. [2019-11-06 22:49:15,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:49:15,689 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2019-11-06 22:49:15,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:49:15,728 INFO L225 Difference]: With dead ends: 9491 [2019-11-06 22:49:15,728 INFO L226 Difference]: Without dead ends: 6375 [2019-11-06 22:49:15,736 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 22:49:15,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6375 states. [2019-11-06 22:49:15,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6375 to 6333. [2019-11-06 22:49:15,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6333 states. [2019-11-06 22:49:15,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6333 states to 6333 states and 10769 transitions. [2019-11-06 22:49:15,924 INFO L78 Accepts]: Start accepts. Automaton has 6333 states and 10769 transitions. Word has length 148 [2019-11-06 22:49:15,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:49:15,928 INFO L462 AbstractCegarLoop]: Abstraction has 6333 states and 10769 transitions. [2019-11-06 22:49:15,928 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:49:15,929 INFO L276 IsEmpty]: Start isEmpty. Operand 6333 states and 10769 transitions. [2019-11-06 22:49:15,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-11-06 22:49:15,933 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:49:15,934 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:49:15,934 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:49:15,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:49:15,934 INFO L82 PathProgramCache]: Analyzing trace with hash -857112276, now seen corresponding path program 1 times [2019-11-06 22:49:15,935 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:49:15,935 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497164830] [2019-11-06 22:49:15,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:49:15,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:49:16,202 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:49:16,203 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497164830] [2019-11-06 22:49:16,203 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:49:16,203 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:49:16,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329453981] [2019-11-06 22:49:16,204 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:49:16,205 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:49:16,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:49:16,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:49:16,205 INFO L87 Difference]: Start difference. First operand 6333 states and 10769 transitions. Second operand 6 states. [2019-11-06 22:49:22,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:49:22,575 INFO L93 Difference]: Finished difference Result 15980 states and 27525 transitions. [2019-11-06 22:49:22,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:49:22,576 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2019-11-06 22:49:22,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:49:22,631 INFO L225 Difference]: With dead ends: 15980 [2019-11-06 22:49:22,631 INFO L226 Difference]: Without dead ends: 9653 [2019-11-06 22:49:22,651 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 22:49:22,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9653 states. [2019-11-06 22:49:22,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9653 to 9576. [2019-11-06 22:49:22,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9576 states. [2019-11-06 22:49:22,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9576 states to 9576 states and 15603 transitions. [2019-11-06 22:49:22,924 INFO L78 Accepts]: Start accepts. Automaton has 9576 states and 15603 transitions. Word has length 156 [2019-11-06 22:49:22,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:49:22,926 INFO L462 AbstractCegarLoop]: Abstraction has 9576 states and 15603 transitions. [2019-11-06 22:49:22,926 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:49:22,926 INFO L276 IsEmpty]: Start isEmpty. Operand 9576 states and 15603 transitions. [2019-11-06 22:49:22,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-11-06 22:49:22,930 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:49:22,931 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:49:22,931 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:49:22,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:49:22,931 INFO L82 PathProgramCache]: Analyzing trace with hash 597997349, now seen corresponding path program 1 times [2019-11-06 22:49:22,932 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:49:22,932 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386921342] [2019-11-06 22:49:22,933 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:49:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:49:23,171 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:49:23,172 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386921342] [2019-11-06 22:49:23,172 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:49:23,172 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:49:23,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16473135] [2019-11-06 22:49:23,173 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:49:23,173 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:49:23,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:49:23,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:49:23,175 INFO L87 Difference]: Start difference. First operand 9576 states and 15603 transitions. Second operand 6 states.