/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/Problem10_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:43:46,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:43:46,059 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:43:46,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-06 22:43:46,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:43:46,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:43:46,110 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:43:46,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:43:46,114 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:43:46,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:43:46,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:43:46,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:43:46,126 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:43:46,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:43:46,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:43:46,132 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:43:46,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:43:46,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:43:46,146 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:43:46,147 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:43:46,148 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 22:43:46,181 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:43:46,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:43:46,188 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:43:46,189 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:43:46,189 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:43:46,189 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:43:46,189 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:43:46,189 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:43:46,190 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:43:46,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:43:46,190 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:43:46,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:43:46,190 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:43:46,191 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:43:46,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:43:46,192 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:43:46,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:43:46,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:43:46,193 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:43:46,193 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:43:46,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:43:46,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:43:46,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:43:46,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:43:46,194 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:43:46,194 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:43:46,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:43:46,195 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:43:46,195 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 22:43:46,481 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:43:46,495 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:43:46,499 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:43:46,500 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:43:46,500 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:43:46,501 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label43.c [2019-11-06 22:43:46,586 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/923a8f4a1/6d6710a11da240e78255ae2366849042/FLAGd381134b2 [2019-11-06 22:43:47,196 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:43:47,197 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label43.c [2019-11-06 22:43:47,209 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/923a8f4a1/6d6710a11da240e78255ae2366849042/FLAGd381134b2 [2019-11-06 22:43:47,445 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/923a8f4a1/6d6710a11da240e78255ae2366849042 [2019-11-06 22:43:47,456 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:43:47,458 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:43:47,459 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:43:47,459 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:43:47,463 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:43:47,464 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:43:47" (1/1) ... [2019-11-06 22:43:47,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c70f143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:47, skipping insertion in model container [2019-11-06 22:43:47,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:43:47" (1/1) ... [2019-11-06 22:43:47,475 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:43:47,542 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:43:48,068 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:43:48,073 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:43:48,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:43:48,183 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:43:48,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:48 WrapperNode [2019-11-06 22:43:48,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:43:48,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:43:48,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:43:48,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:43:48,200 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:48" (1/1) ... [2019-11-06 22:43:48,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:48" (1/1) ... [2019-11-06 22:43:48,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:48" (1/1) ... [2019-11-06 22:43:48,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:48" (1/1) ... [2019-11-06 22:43:48,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:48" (1/1) ... [2019-11-06 22:43:48,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:48" (1/1) ... [2019-11-06 22:43:48,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:48" (1/1) ... [2019-11-06 22:43:48,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:43:48,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:43:48,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:43:48,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:43:48,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:48" (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 22:43:48,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:43:48,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:43:48,400 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 22:43:48,400 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:43:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 22:43:48,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:43:48,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:43:48,401 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 22:43:48,402 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:43:48,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:43:48,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:43:49,757 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:43:49,757 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 22:43:49,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:43:49 BoogieIcfgContainer [2019-11-06 22:43:49,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:43:49,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:43:49,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:43:49,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:43:49,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:43:47" (1/3) ... [2019-11-06 22:43:49,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ebb7692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:43:49, skipping insertion in model container [2019-11-06 22:43:49,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:43:48" (2/3) ... [2019-11-06 22:43:49,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ebb7692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:43:49, skipping insertion in model container [2019-11-06 22:43:49,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:43:49" (3/3) ... [2019-11-06 22:43:49,769 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label43.c [2019-11-06 22:43:49,782 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:43:49,793 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:43:49,808 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:43:49,843 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:43:49,843 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:43:49,844 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:43:49,844 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:43:49,844 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:43:49,844 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:43:49,845 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:43:49,845 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:43:49,875 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2019-11-06 22:43:49,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-11-06 22:43:49,885 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:43:49,886 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] [2019-11-06 22:43:49,888 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:43:49,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:43:49,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1136502142, now seen corresponding path program 1 times [2019-11-06 22:43:49,908 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:43:49,909 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355634866] [2019-11-06 22:43:49,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:43:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:43:50,275 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 22:43:50,275 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355634866] [2019-11-06 22:43:50,277 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:43:50,277 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:43:50,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44157111] [2019-11-06 22:43:50,286 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:43:50,288 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:43:50,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:43:50,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:43:50,308 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2019-11-06 22:43:51,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:43:51,452 INFO L93 Difference]: Finished difference Result 571 states and 989 transitions. [2019-11-06 22:43:51,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:43:51,457 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2019-11-06 22:43:51,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:43:51,487 INFO L225 Difference]: With dead ends: 571 [2019-11-06 22:43:51,487 INFO L226 Difference]: Without dead ends: 294 [2019-11-06 22:43:51,499 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 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 22:43:51,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2019-11-06 22:43:51,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2019-11-06 22:43:51,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2019-11-06 22:43:51,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 421 transitions. [2019-11-06 22:43:51,615 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 421 transitions. Word has length 41 [2019-11-06 22:43:51,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:43:51,616 INFO L462 AbstractCegarLoop]: Abstraction has 294 states and 421 transitions. [2019-11-06 22:43:51,617 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:43:51,617 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 421 transitions. [2019-11-06 22:43:51,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-11-06 22:43:51,624 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:43:51,625 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:51,625 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:43:51,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:43:51,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1617063693, now seen corresponding path program 1 times [2019-11-06 22:43:51,626 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:43:51,627 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999896241] [2019-11-06 22:43:51,627 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:43:51,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:43:51,902 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:43:51,903 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999896241] [2019-11-06 22:43:51,903 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:43:51,903 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:43:51,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875740383] [2019-11-06 22:43:51,905 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:43:51,906 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:43:51,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:43:51,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:43:51,906 INFO L87 Difference]: Start difference. First operand 294 states and 421 transitions. Second operand 6 states. [2019-11-06 22:43:52,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:43:52,811 INFO L93 Difference]: Finished difference Result 741 states and 1061 transitions. [2019-11-06 22:43:52,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:43:52,812 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2019-11-06 22:43:52,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:43:52,816 INFO L225 Difference]: With dead ends: 741 [2019-11-06 22:43:52,816 INFO L226 Difference]: Without dead ends: 453 [2019-11-06 22:43:52,818 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 22:43:52,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2019-11-06 22:43:52,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 445. [2019-11-06 22:43:52,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2019-11-06 22:43:52,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 606 transitions. [2019-11-06 22:43:52,842 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 606 transitions. Word has length 110 [2019-11-06 22:43:52,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:43:52,842 INFO L462 AbstractCegarLoop]: Abstraction has 445 states and 606 transitions. [2019-11-06 22:43:52,843 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:43:52,843 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 606 transitions. [2019-11-06 22:43:52,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-11-06 22:43:52,845 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:43:52,845 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:52,846 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:43:52,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:43:52,846 INFO L82 PathProgramCache]: Analyzing trace with hash -430353343, now seen corresponding path program 1 times [2019-11-06 22:43:52,847 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:43:52,847 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879421563] [2019-11-06 22:43:52,847 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:43:52,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:43:53,015 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:43:53,016 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879421563] [2019-11-06 22:43:53,016 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472892128] [2019-11-06 22:43:53,017 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:43:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:43:53,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-06 22:43:53,161 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:43:53,292 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 22:43:53,293 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 22:43:57,419 WARN L191 SmtUtils]: Spent 4.08 s on a formula simplification that was a NOOP. DAG size: 33 [2019-11-06 22:43:57,462 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-06 22:43:57,565 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-06 22:43:57,657 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:43:57,658 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:43:57,686 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-06 22:43:57,717 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 22:43:57,718 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 22:43:57,718 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-06 22:43:57,720 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-06 22:43:57,723 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-06 22:43:59,029 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 71 DAG size of output: 20 [2019-11-06 22:43:59,068 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-06 22:43:59,207 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2019-11-06 22:43:59,213 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:43:59,263 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:43:59,312 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:43:59,363 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:43:59,416 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:43:59,460 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:43:59,502 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:43:59,545 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:43:59,595 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:43:59,644 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:43:59,695 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:43:59,739 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:43:59,797 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:43:59,846 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:43:59,925 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:43:59,974 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:00,019 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:00,066 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:00,115 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:00,162 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:00,204 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:00,248 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:00,291 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:00,330 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:00,371 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:00,424 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:00,467 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:00,509 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:00,553 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:00,594 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:00,636 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:00,671 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:00,717 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:00,759 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:00,800 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:00,846 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:00,888 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:00,946 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:01,000 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:01,051 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:01,110 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:01,166 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:01,221 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:01,282 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:01,343 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:01,402 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:01,462 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:01,521 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:01,582 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:01,643 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:01,688 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:01,728 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:01,803 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:01,845 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:01,889 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:01,930 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:01,971 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:02,013 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:02,050 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:02,095 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:02,133 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:02,181 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:02,221 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:02,263 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:02,304 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:02,345 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:02,380 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:02,426 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:02,465 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:02,503 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:02,563 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:02,614 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2019-11-06 22:44:02,650 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-06 22:44:02,853 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:44:02,854 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [494316648] [2019-11-06 22:44:02,861 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 121 [2019-11-06 22:44:02,935 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-06 22:44:02,936 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-06 22:44:15,100 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-11-06 22:44:26,200 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-06 22:44:26,203 INFO L272 AbstractInterpreter]: Visited 86 different actions 165 times. Merged at 3 different actions 3 times. Never widened. Performed 299 root evaluator evaluations with a maximum evaluation depth of 16. Performed 299 inverse root evaluator evaluations with a maximum inverse evaluation depth of 16. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2019-11-06 22:44:26,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:44:26,207 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates