/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/Problem18_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:58:29,637 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:58:29,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:58:29,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-06 22:58:29,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:58:29,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:58:29,686 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:58:29,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:58:29,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:58:29,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:58:29,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:58:29,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:58:29,700 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:58:29,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:58:29,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:58:29,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:58:29,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:58:29,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:58:29,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:58:29,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:58:29,720 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 22:58:29,745 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:58:29,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:58:29,746 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:58:29,747 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:58:29,747 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:58:29,747 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:58:29,747 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:58:29,747 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:58:29,748 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:58:29,748 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:58:29,748 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:58:29,748 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:58:29,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:58:29,749 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:58:29,749 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:58:29,749 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:58:29,749 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:58:29,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:58:29,750 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:58:29,750 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:58:29,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:58:29,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:58:29,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:58:29,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:58:29,751 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:58:29,751 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:58:29,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:58:29,751 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:58:29,751 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 22:58:30,062 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:58:30,080 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:58:30,083 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:58:30,085 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:58:30,085 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:58:30,086 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label54.c [2019-11-06 22:58:30,156 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/303dde90d/1c714aa85a83464cada8151f12e9f5b7/FLAG38d83f465 [2019-11-06 22:58:30,917 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:58:30,918 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label54.c [2019-11-06 22:58:30,948 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/303dde90d/1c714aa85a83464cada8151f12e9f5b7/FLAG38d83f465 [2019-11-06 22:58:31,164 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/303dde90d/1c714aa85a83464cada8151f12e9f5b7 [2019-11-06 22:58:31,173 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:58:31,175 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:58:31,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:58:31,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:58:31,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:58:31,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:58:31" (1/1) ... [2019-11-06 22:58:31,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62394d97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:31, skipping insertion in model container [2019-11-06 22:58:31,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:58:31" (1/1) ... [2019-11-06 22:58:31,191 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:58:31,302 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:58:32,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:58:32,650 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:58:33,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:58:33,161 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:58:33,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:33 WrapperNode [2019-11-06 22:58:33,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:58:33,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:58:33,164 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:58:33,164 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:58:33,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:33" (1/1) ... [2019-11-06 22:58:33,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:33" (1/1) ... [2019-11-06 22:58:33,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:33" (1/1) ... [2019-11-06 22:58:33,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:33" (1/1) ... [2019-11-06 22:58:33,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:33" (1/1) ... [2019-11-06 22:58:33,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:33" (1/1) ... [2019-11-06 22:58:33,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:33" (1/1) ... [2019-11-06 22:58:33,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:58:33,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:58:33,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:58:33,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:58:33,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:33" (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 22:58:33,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:58:33,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:58:33,484 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 22:58:33,484 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-11-06 22:58:33,484 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-11-06 22:58:33,484 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:58:33,484 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 22:58:33,485 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-11-06 22:58:33,485 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-11-06 22:58:33,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:58:33,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:58:33,486 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 22:58:33,486 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:58:33,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:58:33,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:58:37,138 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:58:37,138 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 22:58:37,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:58:37 BoogieIcfgContainer [2019-11-06 22:58:37,143 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:58:37,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:58:37,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:58:37,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:58:37,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:58:31" (1/3) ... [2019-11-06 22:58:37,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4552bc30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:58:37, skipping insertion in model container [2019-11-06 22:58:37,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:33" (2/3) ... [2019-11-06 22:58:37,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4552bc30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:58:37, skipping insertion in model container [2019-11-06 22:58:37,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:58:37" (3/3) ... [2019-11-06 22:58:37,157 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label54.c [2019-11-06 22:58:37,172 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:58:37,184 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:58:37,196 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:58:37,245 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:58:37,245 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:58:37,245 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:58:37,246 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:58:37,246 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:58:37,246 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:58:37,246 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:58:37,246 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:58:37,289 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-11-06 22:58:37,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-06 22:58:37,295 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:58:37,296 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] [2019-11-06 22:58:37,298 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:58:37,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:58:37,303 INFO L82 PathProgramCache]: Analyzing trace with hash 466768385, now seen corresponding path program 1 times [2019-11-06 22:58:37,313 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:58:37,313 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631606220] [2019-11-06 22:58:37,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:58:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:58:37,590 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 22:58:37,591 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631606220] [2019-11-06 22:58:37,591 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:58:37,592 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:58:37,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918689155] [2019-11-06 22:58:37,598 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:58:37,600 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:58:37,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:58:37,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:58:37,617 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2019-11-06 22:58:45,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:58:45,276 INFO L93 Difference]: Finished difference Result 2970 states and 5743 transitions. [2019-11-06 22:58:45,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:58:45,280 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2019-11-06 22:58:45,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:58:45,318 INFO L225 Difference]: With dead ends: 2970 [2019-11-06 22:58:45,319 INFO L226 Difference]: Without dead ends: 2114 [2019-11-06 22:58:45,329 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 22:58:45,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2114 states. [2019-11-06 22:58:45,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2114 to 2114. [2019-11-06 22:58:45,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2114 states. [2019-11-06 22:58:45,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 3476 transitions. [2019-11-06 22:58:45,521 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 3476 transitions. Word has length 40 [2019-11-06 22:58:45,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:58:45,523 INFO L462 AbstractCegarLoop]: Abstraction has 2114 states and 3476 transitions. [2019-11-06 22:58:45,523 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:58:45,523 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 3476 transitions. [2019-11-06 22:58:45,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-11-06 22:58:45,540 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:58:45,541 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:58:45,542 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:58:45,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:58:45,543 INFO L82 PathProgramCache]: Analyzing trace with hash 653681341, now seen corresponding path program 1 times [2019-11-06 22:58:45,543 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:58:45,544 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384558763] [2019-11-06 22:58:45,544 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:58:45,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:58:45,895 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:58:45,896 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384558763] [2019-11-06 22:58:45,896 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:58:45,896 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:58:45,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133857138] [2019-11-06 22:58:45,904 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:58:45,904 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:58:45,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:58:45,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:58:45,905 INFO L87 Difference]: Start difference. First operand 2114 states and 3476 transitions. Second operand 5 states. [2019-11-06 22:58:51,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:58:51,587 INFO L93 Difference]: Finished difference Result 6436 states and 10709 transitions. [2019-11-06 22:58:51,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:58:51,591 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2019-11-06 22:58:51,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:58:51,620 INFO L225 Difference]: With dead ends: 6436 [2019-11-06 22:58:51,621 INFO L226 Difference]: Without dead ends: 4328 [2019-11-06 22:58:51,627 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 22:58:51,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4328 states. [2019-11-06 22:58:51,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4328 to 4296. [2019-11-06 22:58:51,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4296 states. [2019-11-06 22:58:51,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4296 states to 4296 states and 6660 transitions. [2019-11-06 22:58:51,768 INFO L78 Accepts]: Start accepts. Automaton has 4296 states and 6660 transitions. Word has length 109 [2019-11-06 22:58:51,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:58:51,771 INFO L462 AbstractCegarLoop]: Abstraction has 4296 states and 6660 transitions. [2019-11-06 22:58:51,772 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:58:51,772 INFO L276 IsEmpty]: Start isEmpty. Operand 4296 states and 6660 transitions. [2019-11-06 22:58:51,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-11-06 22:58:51,777 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:58:51,778 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:58:51,778 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:58:51,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:58:51,779 INFO L82 PathProgramCache]: Analyzing trace with hash 468776008, now seen corresponding path program 1 times [2019-11-06 22:58:51,780 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:58:51,780 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576676680] [2019-11-06 22:58:51,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:58:51,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:58:51,980 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:58:51,981 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576676680] [2019-11-06 22:58:51,981 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:58:51,981 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:58:51,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024810798] [2019-11-06 22:58:51,982 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:58:51,982 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:58:51,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:58:51,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:58:51,983 INFO L87 Difference]: Start difference. First operand 4296 states and 6660 transitions. Second operand 6 states. [2019-11-06 22:58:57,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:58:57,112 INFO L93 Difference]: Finished difference Result 10829 states and 16791 transitions. [2019-11-06 22:58:57,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:58:57,118 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2019-11-06 22:58:57,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:58:57,167 INFO L225 Difference]: With dead ends: 10829 [2019-11-06 22:58:57,168 INFO L226 Difference]: Without dead ends: 6539 [2019-11-06 22:58:57,184 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:58:57,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6539 states. [2019-11-06 22:58:57,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6539 to 6505. [2019-11-06 22:58:57,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6505 states. [2019-11-06 22:58:57,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6505 states to 6505 states and 8565 transitions. [2019-11-06 22:58:57,452 INFO L78 Accepts]: Start accepts. Automaton has 6505 states and 8565 transitions. Word has length 136 [2019-11-06 22:58:57,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:58:57,454 INFO L462 AbstractCegarLoop]: Abstraction has 6505 states and 8565 transitions. [2019-11-06 22:58:57,455 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:58:57,455 INFO L276 IsEmpty]: Start isEmpty. Operand 6505 states and 8565 transitions. [2019-11-06 22:58:57,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2019-11-06 22:58:57,464 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:58:57,464 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-11-06 22:58:57,465 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:58:57,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:58:57,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1286187466, now seen corresponding path program 1 times [2019-11-06 22:58:57,466 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:58:57,466 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154824258] [2019-11-06 22:58:57,467 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:58:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:58:57,695 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-11-06 22:58:57,696 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154824258] [2019-11-06 22:58:57,696 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:58:57,696 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:58:57,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068258486] [2019-11-06 22:58:57,697 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:58:57,697 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:58:57,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:58:57,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:58:57,698 INFO L87 Difference]: Start difference. First operand 6505 states and 8565 transitions. Second operand 4 states. [2019-11-06 22:59:04,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:59:04,056 INFO L93 Difference]: Finished difference Result 25805 states and 34806 transitions. [2019-11-06 22:59:04,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:59:04,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 215 [2019-11-06 22:59:04,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:59:04,129 INFO L225 Difference]: With dead ends: 25805 [2019-11-06 22:59:04,129 INFO L226 Difference]: Without dead ends: 19306 [2019-11-06 22:59:04,147 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:59:04,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19306 states. [2019-11-06 22:59:04,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19306 to 19306. [2019-11-06 22:59:04,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19306 states. [2019-11-06 22:59:04,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19306 states to 19306 states and 24415 transitions. [2019-11-06 22:59:04,540 INFO L78 Accepts]: Start accepts. Automaton has 19306 states and 24415 transitions. Word has length 215 [2019-11-06 22:59:04,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:59:04,540 INFO L462 AbstractCegarLoop]: Abstraction has 19306 states and 24415 transitions. [2019-11-06 22:59:04,540 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:59:04,541 INFO L276 IsEmpty]: Start isEmpty. Operand 19306 states and 24415 transitions. [2019-11-06 22:59:04,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2019-11-06 22:59:04,565 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:59:04,566 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:59:04,567 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:59:04,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:59:04,568 INFO L82 PathProgramCache]: Analyzing trace with hash -679480734, now seen corresponding path program 1 times [2019-11-06 22:59:04,568 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:59:04,569 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600454464] [2019-11-06 22:59:04,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:59:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:59:05,099 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 197 proven. 96 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2019-11-06 22:59:05,099 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600454464] [2019-11-06 22:59:05,100 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076038928] [2019-11-06 22:59:05,100 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 22:59:05,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:59:05,301 INFO L256 TraceCheckSpWp]: Trace formula consists of 692 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 22:59:05,319 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:59:05,597 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 377 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-06 22:59:05,597 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:59:05,905 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 197 proven. 96 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2019-11-06 22:59:05,906 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1509563300] [2019-11-06 22:59:05,911 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 467 [2019-11-06 22:59:05,964 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-06 22:59:05,964 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)