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 -i ../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-01 22:28:09,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-01 22:28:09,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-01 22:28:09,146 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-01 22:28:09,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-01 22:28:09,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-01 22:28:09,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-01 22:28:09,159 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-01 22:28:09,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-01 22:28:09,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-01 22:28:09,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-01 22:28:09,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-01 22:28:09,166 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-01 22:28:09,167 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-01 22:28:09,168 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-01 22:28:09,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-01 22:28:09,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-01 22:28:09,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-01 22:28:09,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-01 22:28:09,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-01 22:28:09,190 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 [2019-10-01 22:28:09,216 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-01 22:28:09,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-01 22:28:09,218 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-01 22:28:09,218 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-01 22:28:09,218 INFO L138 SettingsManager]: * Use SBE=true [2019-10-01 22:28:09,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-01 22:28:09,219 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-01 22:28:09,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-01 22:28:09,219 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-01 22:28:09,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-01 22:28:09,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-01 22:28:09,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-01 22:28:09,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-01 22:28:09,221 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-01 22:28:09,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-01 22:28:09,222 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-01 22:28:09,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-01 22:28:09,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-01 22:28:09,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-01 22:28:09,223 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-01 22:28:09,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-01 22:28:09,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-01 22:28:09,224 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-01 22:28:09,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-01 22:28:09,224 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-01 22:28:09,224 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-01 22:28:09,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-01 22:28:09,225 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-01 22:28:09,225 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-01 22:28:09,277 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-01 22:28:09,297 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-01 22:28:09,301 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-01 22:28:09,304 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-01 22:28:09,305 INFO L275 PluginConnector]: CDTParser initialized [2019-10-01 22:28:09,305 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2019-10-01 22:28:09,377 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e47abbac/e3b748657b5f4a1a8b2e9830930e569d/FLAG6de277cff [2019-10-01 22:28:09,836 INFO L306 CDTParser]: Found 1 translation units. [2019-10-01 22:28:09,837 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2019-10-01 22:28:09,844 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e47abbac/e3b748657b5f4a1a8b2e9830930e569d/FLAG6de277cff [2019-10-01 22:28:10,252 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e47abbac/e3b748657b5f4a1a8b2e9830930e569d [2019-10-01 22:28:10,263 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-01 22:28:10,264 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-01 22:28:10,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-01 22:28:10,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-01 22:28:10,268 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-01 22:28:10,272 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.10 10:28:10" (1/1) ... [2019-10-01 22:28:10,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ac258e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.10 10:28:10, skipping insertion in model container [2019-10-01 22:28:10,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.10 10:28:10" (1/1) ... [2019-10-01 22:28:10,284 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-01 22:28:10,302 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-01 22:28:10,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-01 22:28:10,494 INFO L188 MainTranslator]: Completed pre-run [2019-10-01 22:28:10,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-01 22:28:10,642 INFO L192 MainTranslator]: Completed translation [2019-10-01 22:28:10,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.10 10:28:10 WrapperNode [2019-10-01 22:28:10,643 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-01 22:28:10,644 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-01 22:28:10,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-01 22:28:10,644 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-01 22:28:10,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.10 10:28:10" (1/1) ... [2019-10-01 22:28:10,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.10 10:28:10" (1/1) ... [2019-10-01 22:28:10,663 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.10 10:28:10" (1/1) ... [2019-10-01 22:28:10,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.10 10:28:10" (1/1) ... [2019-10-01 22:28:10,674 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.10 10:28:10" (1/1) ... [2019-10-01 22:28:10,682 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.10 10:28:10" (1/1) ... [2019-10-01 22:28:10,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.10 10:28:10" (1/1) ... [2019-10-01 22:28:10,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-01 22:28:10,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-01 22:28:10,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-01 22:28:10,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-01 22:28:10,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.10 10:28:10" (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 [2019-10-01 22:28:10,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-01 22:28:10,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-01 22:28:10,755 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-01 22:28:10,755 INFO L138 BoogieDeclarations]: Found implementation of procedure insert [2019-10-01 22:28:10,756 INFO L138 BoogieDeclarations]: Found implementation of procedure elem_exists [2019-10-01 22:28:10,756 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-01 22:28:10,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-01 22:28:10,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-01 22:28:10,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-01 22:28:10,756 INFO L130 BoogieDeclarations]: Found specification of procedure insert [2019-10-01 22:28:10,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-01 22:28:10,757 INFO L130 BoogieDeclarations]: Found specification of procedure elem_exists [2019-10-01 22:28:10,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-01 22:28:10,757 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-01 22:28:10,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-01 22:28:10,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-01 22:28:10,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-01 22:28:10,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-01 22:28:11,178 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-01 22:28:11,178 INFO L283 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-01 22:28:11,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.10 10:28:11 BoogieIcfgContainer [2019-10-01 22:28:11,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-01 22:28:11,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-01 22:28:11,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-01 22:28:11,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-01 22:28:11,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.10 10:28:10" (1/3) ... [2019-10-01 22:28:11,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c7bb52c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.10 10:28:11, skipping insertion in model container [2019-10-01 22:28:11,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.10 10:28:10" (2/3) ... [2019-10-01 22:28:11,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c7bb52c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.10 10:28:11, skipping insertion in model container [2019-10-01 22:28:11,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.10 10:28:11" (3/3) ... [2019-10-01 22:28:11,187 INFO L109 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_trivial_ground.i [2019-10-01 22:28:11,196 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-01 22:28:11,204 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-01 22:28:11,222 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-01 22:28:11,253 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-10-01 22:28:11,254 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-01 22:28:11,254 INFO L378 AbstractCegarLoop]: Hoare is true [2019-10-01 22:28:11,254 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-01 22:28:11,254 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-01 22:28:11,254 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-01 22:28:11,255 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-01 22:28:11,255 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-01 22:28:11,256 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-01 22:28:11,275 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2019-10-01 22:28:11,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-01 22:28:11,281 INFO L403 BasicCegarLoop]: Found error trace [2019-10-01 22:28:11,282 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-01 22:28:11,284 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-01 22:28:11,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-01 22:28:11,290 INFO L82 PathProgramCache]: Analyzing trace with hash 528217166, now seen corresponding path program 1 times [2019-10-01 22:28:11,292 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-01 22:28:11,292 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-01 22:28:11,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-01 22:28:11,344 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-01 22:28:11,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-01 22:28:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-01 22:28:11,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-01 22:28:11,457 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-01 22:28:11,457 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-01 22:28:11,461 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-01 22:28:11,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-01 22:28:11,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-01 22:28:11,481 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 3 states. [2019-10-01 22:28:11,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-01 22:28:11,660 INFO L93 Difference]: Finished difference Result 150 states and 228 transitions. [2019-10-01 22:28:11,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-01 22:28:11,663 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-10-01 22:28:11,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-01 22:28:11,682 INFO L225 Difference]: With dead ends: 150 [2019-10-01 22:28:11,682 INFO L226 Difference]: Without dead ends: 89 [2019-10-01 22:28:11,692 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-01 22:28:11,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2019-10-01 22:28:11,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 57. [2019-10-01 22:28:11,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-10-01 22:28:11,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 70 transitions. [2019-10-01 22:28:11,740 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 70 transitions. Word has length 14 [2019-10-01 22:28:11,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-01 22:28:11,740 INFO L475 AbstractCegarLoop]: Abstraction has 57 states and 70 transitions. [2019-10-01 22:28:11,740 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-01 22:28:11,741 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 70 transitions. [2019-10-01 22:28:11,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-01 22:28:11,742 INFO L403 BasicCegarLoop]: Found error trace [2019-10-01 22:28:11,742 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-01 22:28:11,742 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-01 22:28:11,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-01 22:28:11,743 INFO L82 PathProgramCache]: Analyzing trace with hash 396779504, now seen corresponding path program 1 times [2019-10-01 22:28:11,743 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-01 22:28:11,744 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-01 22:28:11,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-01 22:28:11,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-01 22:28:11,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-01 22:28:11,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-01 22:28:11,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-01 22:28:11,834 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-01 22:28:11,834 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-01 22:28:11,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-01 22:28:11,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-01 22:28:11,885 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-01 22:28:11,891 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-01 22:28:11,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-01 22:28:11,937 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-01 22:28:11,938 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-10-01 22:28:11,942 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-01 22:28:11,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-01 22:28:11,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-01 22:28:11,943 INFO L87 Difference]: Start difference. First operand 57 states and 70 transitions. Second operand 5 states. [2019-10-01 22:28:12,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-01 22:28:12,129 INFO L93 Difference]: Finished difference Result 170 states and 222 transitions. [2019-10-01 22:28:12,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-01 22:28:12,130 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-10-01 22:28:12,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-01 22:28:12,133 INFO L225 Difference]: With dead ends: 170 [2019-10-01 22:28:12,133 INFO L226 Difference]: Without dead ends: 122 [2019-10-01 22:28:12,134 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-01 22:28:12,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2019-10-01 22:28:12,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 59. [2019-10-01 22:28:12,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-10-01 22:28:12,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 72 transitions. [2019-10-01 22:28:12,150 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 72 transitions. Word has length 16 [2019-10-01 22:28:12,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-01 22:28:12,150 INFO L475 AbstractCegarLoop]: Abstraction has 59 states and 72 transitions. [2019-10-01 22:28:12,150 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-01 22:28:12,151 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 72 transitions. [2019-10-01 22:28:12,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-01 22:28:12,151 INFO L403 BasicCegarLoop]: Found error trace [2019-10-01 22:28:12,152 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-01 22:28:12,152 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-01 22:28:12,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-01 22:28:12,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1360762094, now seen corresponding path program 2 times [2019-10-01 22:28:12,153 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-01 22:28:12,154 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-01 22:28:12,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-01 22:28:12,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-01 22:28:12,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-01 22:28:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-01 22:28:12,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-01 22:28:12,261 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-01 22:28:12,261 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-10-01 22:28:12,289 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-01 22:28:12,307 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-10-01 22:28:12,308 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-01 22:28:12,308 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-01 22:28:12,310 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-01 22:28:12,337 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-01 22:28:12,340 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-01 22:28:12,341 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2019-10-01 22:28:12,342 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-01 22:28:12,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-01 22:28:12,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-01 22:28:12,345 INFO L87 Difference]: Start difference. First operand 59 states and 72 transitions. Second operand 7 states. [2019-10-01 22:28:12,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-01 22:28:12,582 INFO L93 Difference]: Finished difference Result 171 states and 223 transitions. [2019-10-01 22:28:12,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-01 22:28:12,583 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2019-10-01 22:28:12,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-01 22:28:12,586 INFO L225 Difference]: With dead ends: 171 [2019-10-01 22:28:12,586 INFO L226 Difference]: Without dead ends: 121 [2019-10-01 22:28:12,593 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-10-01 22:28:12,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2019-10-01 22:28:12,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 64. [2019-10-01 22:28:12,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2019-10-01 22:28:12,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 77 transitions. [2019-10-01 22:28:12,614 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 77 transitions. Word has length 18 [2019-10-01 22:28:12,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-01 22:28:12,614 INFO L475 AbstractCegarLoop]: Abstraction has 64 states and 77 transitions. [2019-10-01 22:28:12,614 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-01 22:28:12,614 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 77 transitions. [2019-10-01 22:28:12,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-01 22:28:12,616 INFO L403 BasicCegarLoop]: Found error trace [2019-10-01 22:28:12,616 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-01 22:28:12,616 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-01 22:28:12,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-01 22:28:12,617 INFO L82 PathProgramCache]: Analyzing trace with hash 101892506, now seen corresponding path program 1 times [2019-10-01 22:28:12,617 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-01 22:28:12,617 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-01 22:28:12,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-01 22:28:12,619 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-10-01 22:28:12,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-01 22:28:12,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-01 22:28:12,675 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-01 22:28:12,675 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-01 22:28:12,675 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-01 22:28:12,676 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-01 22:28:12,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-01 22:28:12,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-01 22:28:12,677 INFO L87 Difference]: Start difference. First operand 64 states and 77 transitions. Second operand 3 states. [2019-10-01 22:28:12,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-01 22:28:12,723 INFO L93 Difference]: Finished difference Result 130 states and 162 transitions. [2019-10-01 22:28:12,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-01 22:28:12,723 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2019-10-01 22:28:12,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-01 22:28:12,725 INFO L225 Difference]: With dead ends: 130 [2019-10-01 22:28:12,725 INFO L226 Difference]: Without dead ends: 84 [2019-10-01 22:28:12,727 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-01 22:28:12,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2019-10-01 22:28:12,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 65. [2019-10-01 22:28:12,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-10-01 22:28:12,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 78 transitions. [2019-10-01 22:28:12,746 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 78 transitions. Word has length 39 [2019-10-01 22:28:12,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-01 22:28:12,750 INFO L475 AbstractCegarLoop]: Abstraction has 65 states and 78 transitions. [2019-10-01 22:28:12,750 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-01 22:28:12,750 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 78 transitions. [2019-10-01 22:28:12,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-10-01 22:28:12,752 INFO L403 BasicCegarLoop]: Found error trace [2019-10-01 22:28:12,752 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-01 22:28:12,752 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-01 22:28:12,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-01 22:28:12,753 INFO L82 PathProgramCache]: Analyzing trace with hash -822197896, now seen corresponding path program 1 times [2019-10-01 22:28:12,753 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-01 22:28:12,754 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-01 22:28:12,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-01 22:28:12,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-01 22:28:12,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-01 22:28:12,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-01 22:28:12,860 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-01 22:28:12,860 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-01 22:28:12,860 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-01 22:28:12,861 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-01 22:28:12,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-01 22:28:12,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-01 22:28:12,862 INFO L87 Difference]: Start difference. First operand 65 states and 78 transitions. Second operand 4 states. [2019-10-01 22:28:12,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-01 22:28:12,888 INFO L93 Difference]: Finished difference Result 116 states and 143 transitions. [2019-10-01 22:28:12,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-01 22:28:12,888 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2019-10-01 22:28:12,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-01 22:28:12,892 INFO L225 Difference]: With dead ends: 116 [2019-10-01 22:28:12,893 INFO L226 Difference]: Without dead ends: 71 [2019-10-01 22:28:12,894 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-01 22:28:12,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2019-10-01 22:28:12,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2019-10-01 22:28:12,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2019-10-01 22:28:12,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2019-10-01 22:28:12,915 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 41 [2019-10-01 22:28:12,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-01 22:28:12,915 INFO L475 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2019-10-01 22:28:12,915 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-01 22:28:12,915 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2019-10-01 22:28:12,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-10-01 22:28:12,919 INFO L403 BasicCegarLoop]: Found error trace [2019-10-01 22:28:12,920 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-01 22:28:12,920 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-01 22:28:12,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-01 22:28:12,920 INFO L82 PathProgramCache]: Analyzing trace with hash 595391407, now seen corresponding path program 1 times [2019-10-01 22:28:12,921 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-01 22:28:12,921 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-01 22:28:12,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-01 22:28:12,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-01 22:28:12,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-01 22:28:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-01 22:28:13,041 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-01 22:28:13,041 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-01 22:28:13,041 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-01 22:28:13,042 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-01 22:28:13,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-01 22:28:13,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-01 22:28:13,043 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand 5 states. [2019-10-01 22:28:13,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-01 22:28:13,086 INFO L93 Difference]: Finished difference Result 95 states and 113 transitions. [2019-10-01 22:28:13,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-01 22:28:13,086 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2019-10-01 22:28:13,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-01 22:28:13,087 INFO L225 Difference]: With dead ends: 95 [2019-10-01 22:28:13,087 INFO L226 Difference]: Without dead ends: 0 [2019-10-01 22:28:13,088 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-01 22:28:13,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-01 22:28:13,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-01 22:28:13,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-01 22:28:13,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-01 22:28:13,089 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2019-10-01 22:28:13,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-01 22:28:13,089 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-01 22:28:13,089 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-01 22:28:13,090 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-01 22:28:13,090 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-01 22:28:13,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-01 22:28:13,264 INFO L446 ceAbstractionStarter]: At program point elem_existsENTRY(lines 9 15) the Hoare annotation is: true [2019-10-01 22:28:13,264 INFO L443 ceAbstractionStarter]: For program point elem_existsEXIT(lines 9 15) no Hoare annotation was computed. [2019-10-01 22:28:13,264 INFO L443 ceAbstractionStarter]: For program point L12(line 12) no Hoare annotation was computed. [2019-10-01 22:28:13,264 INFO L443 ceAbstractionStarter]: For program point L11-2(lines 11 13) no Hoare annotation was computed. [2019-10-01 22:28:13,265 INFO L443 ceAbstractionStarter]: For program point elem_existsFINAL(lines 9 15) no Hoare annotation was computed. [2019-10-01 22:28:13,265 INFO L439 ceAbstractionStarter]: At program point L11-3(lines 11 13) the Hoare annotation is: (or (and (= elem_exists_~i~0 0) (= elem_exists_~size |elem_exists_#in~size|)) (not (= 0 |elem_exists_#in~size|))) [2019-10-01 22:28:13,265 INFO L443 ceAbstractionStarter]: For program point L11-4(lines 11 13) no Hoare annotation was computed. [2019-10-01 22:28:13,265 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-01 22:28:13,265 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-01 22:28:13,265 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-01 22:28:13,265 INFO L446 ceAbstractionStarter]: At program point insertENTRY(lines 5 8) the Hoare annotation is: true [2019-10-01 22:28:13,266 INFO L443 ceAbstractionStarter]: For program point insertFINAL(lines 5 8) no Hoare annotation was computed. [2019-10-01 22:28:13,266 INFO L443 ceAbstractionStarter]: For program point insertEXIT(lines 5 8) no Hoare annotation was computed. [2019-10-01 22:28:13,266 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-01 22:28:13,266 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-01 22:28:13,266 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-01 22:28:13,266 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-01 22:28:13,266 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 16 56) no Hoare annotation was computed. [2019-10-01 22:28:13,267 INFO L439 ceAbstractionStarter]: At program point L52(line 52) the Hoare annotation is: false [2019-10-01 22:28:13,267 INFO L443 ceAbstractionStarter]: For program point L52-1(line 52) no Hoare annotation was computed. [2019-10-01 22:28:13,267 INFO L443 ceAbstractionStarter]: For program point L44-2(lines 44 48) no Hoare annotation was computed. [2019-10-01 22:28:13,267 INFO L439 ceAbstractionStarter]: At program point L44-3(lines 44 48) the Hoare annotation is: (and (= main_~n~0 0) (= main_~x~0 0)) [2019-10-01 22:28:13,267 INFO L443 ceAbstractionStarter]: For program point L36-2(lines 36 39) no Hoare annotation was computed. [2019-10-01 22:28:13,267 INFO L439 ceAbstractionStarter]: At program point L36-3(lines 36 39) the Hoare annotation is: (and (= main_~n~0 0) (= main_~x~0 0)) [2019-10-01 22:28:13,268 INFO L443 ceAbstractionStarter]: For program point L36-4(lines 36 39) no Hoare annotation was computed. [2019-10-01 22:28:13,268 INFO L443 ceAbstractionStarter]: For program point L28-2(lines 28 32) no Hoare annotation was computed. [2019-10-01 22:28:13,268 INFO L439 ceAbstractionStarter]: At program point L28-3(lines 28 32) the Hoare annotation is: (and (= main_~n~0 0) (= main_~x~0 0)) [2019-10-01 22:28:13,269 INFO L443 ceAbstractionStarter]: For program point L28-4(lines 28 32) no Hoare annotation was computed. [2019-10-01 22:28:13,269 INFO L443 ceAbstractionStarter]: For program point L45-2(lines 45 47) no Hoare annotation was computed. [2019-10-01 22:28:13,269 INFO L439 ceAbstractionStarter]: At program point L45-3(lines 45 47) the Hoare annotation is: false [2019-10-01 22:28:13,269 INFO L443 ceAbstractionStarter]: For program point L29-2(lines 29 31) no Hoare annotation was computed. [2019-10-01 22:28:13,270 INFO L439 ceAbstractionStarter]: At program point L29-3(lines 29 31) the Hoare annotation is: false [2019-10-01 22:28:13,270 INFO L439 ceAbstractionStarter]: At program point L46(line 46) the Hoare annotation is: false [2019-10-01 22:28:13,270 INFO L443 ceAbstractionStarter]: For program point L46-1(line 46) no Hoare annotation was computed. [2019-10-01 22:28:13,270 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 16 56) no Hoare annotation was computed. [2019-10-01 22:28:13,270 INFO L439 ceAbstractionStarter]: At program point L30(line 30) the Hoare annotation is: false [2019-10-01 22:28:13,270 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 16 56) the Hoare annotation is: true [2019-10-01 22:28:13,270 INFO L443 ceAbstractionStarter]: For program point L30-1(line 30) no Hoare annotation was computed. [2019-10-01 22:28:13,271 INFO L443 ceAbstractionStarter]: For program point L22-2(lines 22 25) no Hoare annotation was computed. [2019-10-01 22:28:13,271 INFO L439 ceAbstractionStarter]: At program point L22-3(lines 22 25) the Hoare annotation is: (and (= main_~n~0 0) (<= 0 main_~x~0)) [2019-10-01 22:28:13,271 INFO L443 ceAbstractionStarter]: For program point L22-4(lines 22 25) no Hoare annotation was computed. [2019-10-01 22:28:13,272 INFO L443 ceAbstractionStarter]: For program point L40-2(lines 40 49) no Hoare annotation was computed. [2019-10-01 22:28:13,272 INFO L439 ceAbstractionStarter]: At program point L40-3(lines 40 49) the Hoare annotation is: (and (= main_~n~0 0) (= main_~x~0 0)) [2019-10-01 22:28:13,272 INFO L443 ceAbstractionStarter]: For program point L40-4(lines 40 49) no Hoare annotation was computed. [2019-10-01 22:28:13,272 INFO L439 ceAbstractionStarter]: At program point L41(line 41) the Hoare annotation is: (and (= main_~n~0 0) (= main_~x~0 0)) [2019-10-01 22:28:13,273 INFO L443 ceAbstractionStarter]: For program point L41-1(line 41) no Hoare annotation was computed. [2019-10-01 22:28:13,273 INFO L443 ceAbstractionStarter]: For program point L41-2(lines 41 43) no Hoare annotation was computed. [2019-10-01 22:28:13,273 INFO L443 ceAbstractionStarter]: For program point L41-4(lines 41 43) no Hoare annotation was computed. [2019-10-01 22:28:13,273 INFO L443 ceAbstractionStarter]: For program point L50-2(lines 50 54) no Hoare annotation was computed. [2019-10-01 22:28:13,273 INFO L439 ceAbstractionStarter]: At program point L50-3(lines 50 54) the Hoare annotation is: (and (<= main_~n~0 0) (= main_~x~0 0)) [2019-10-01 22:28:13,274 INFO L443 ceAbstractionStarter]: For program point L50-4(lines 50 54) no Hoare annotation was computed. [2019-10-01 22:28:13,274 INFO L439 ceAbstractionStarter]: At program point L42(line 42) the Hoare annotation is: false [2019-10-01 22:28:13,274 INFO L443 ceAbstractionStarter]: For program point L42-1(line 42) no Hoare annotation was computed. [2019-10-01 22:28:13,274 INFO L443 ceAbstractionStarter]: For program point L51-2(lines 51 53) no Hoare annotation was computed. [2019-10-01 22:28:13,274 INFO L439 ceAbstractionStarter]: At program point L51-3(lines 51 53) the Hoare annotation is: false [2019-10-01 22:28:13,274 INFO L443 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-10-01 22:28:13,275 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-10-01 22:28:13,275 INFO L443 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-10-01 22:28:13,275 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2019-10-01 22:28:13,276 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2019-10-01 22:28:13,277 INFO L443 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-10-01 22:28:13,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.10 10:28:13 BoogieIcfgContainer [2019-10-01 22:28:13,299 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-01 22:28:13,303 INFO L168 Benchmark]: Toolchain (without parser) took 3036.85 ms. Allocated memory was 138.9 MB in the beginning and 221.2 MB in the end (delta: 82.3 MB). Free memory was 86.7 MB in the beginning and 104.2 MB in the end (delta: -17.5 MB). Peak memory consumption was 64.8 MB. Max. memory is 7.1 GB. [2019-10-01 22:28:13,305 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 138.9 MB. Free memory was 104.9 MB in the beginning and 104.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-01 22:28:13,308 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.89 ms. Allocated memory was 138.9 MB in the beginning and 198.2 MB in the end (delta: 59.2 MB). Free memory was 86.3 MB in the beginning and 175.1 MB in the end (delta: -88.8 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2019-10-01 22:28:13,308 INFO L168 Benchmark]: Boogie Preprocessor took 47.52 ms. Allocated memory is still 198.2 MB. Free memory was 175.1 MB in the beginning and 172.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2019-10-01 22:28:13,310 INFO L168 Benchmark]: RCFGBuilder took 488.46 ms. Allocated memory is still 198.2 MB. Free memory was 172.7 MB in the beginning and 149.5 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2019-10-01 22:28:13,312 INFO L168 Benchmark]: TraceAbstraction took 2118.49 ms. Allocated memory was 198.2 MB in the beginning and 221.2 MB in the end (delta: 23.1 MB). Free memory was 149.5 MB in the beginning and 104.2 MB in the end (delta: 45.3 MB). Peak memory consumption was 68.3 MB. Max. memory is 7.1 GB. [2019-10-01 22:28:13,321 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 138.9 MB. Free memory was 104.9 MB in the beginning and 104.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 377.89 ms. Allocated memory was 138.9 MB in the beginning and 198.2 MB in the end (delta: 59.2 MB). Free memory was 86.3 MB in the beginning and 175.1 MB in the end (delta: -88.8 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 47.52 ms. Allocated memory is still 198.2 MB. Free memory was 175.1 MB in the beginning and 172.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 488.46 ms. Allocated memory is still 198.2 MB. Free memory was 172.7 MB in the beginning and 149.5 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2118.49 ms. Allocated memory was 198.2 MB in the beginning and 221.2 MB in the end (delta: 23.1 MB). Free memory was 149.5 MB in the beginning and 104.2 MB in the end (delta: 45.3 MB). Peak memory consumption was 68.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: n == 0 && x == 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: n == 0 && 0 <= x - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: n == 0 && x == 0 - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: n == 0 && x == 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (i == 0 && size == \old(size)) || !(0 == \old(size)) - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: n <= 0 && x == 0 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: n == 0 && x == 0 - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 61 locations, 1 error locations. SAFE Result, 2.0s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 349 SDtfs, 222 SDslu, 591 SDs, 0 SdLazy, 198 SolverSat, 49 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 171 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 22 LocationsWithAnnotation, 59 PreInvPairs, 70 NumberOfFragments, 75 HoareAnnotationTreeSize, 59 FomulaSimplifications, 73 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 22 FomulaSimplificationsInter, 33 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 203 NumberOfCodeBlocks, 199 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 195 ConstructedInterpolants, 0 QuantifiedInterpolants, 8959 SizeOfPredicates, 3 NumberOfNonLiveVariables, 124 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 33/39 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...