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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/locks/test_locks_6.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:00:52,103 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:00:52,106 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:00:52,119 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:00:52,119 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:00:52,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:00:52,123 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:00:52,132 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:00:52,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:00:52,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:00:52,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:00:52,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:00:52,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:00:52,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:00:52,144 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:00:52,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:00:52,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:00:52,149 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:00:52,151 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:00:52,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:00:52,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:00:52,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:00:52,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:00:52,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:00:52,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 03:00:52,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:00:52,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:00:52,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:00:52,184 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 [2019-10-15 03:00:52,217 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:00:52,217 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:00:52,223 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:00:52,224 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:00:52,224 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:00:52,224 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:00:52,224 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:00:52,225 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:00:52,225 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:00:52,225 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:00:52,225 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:00:52,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:00:52,226 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:00:52,226 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:00:52,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:00:52,227 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:00:52,227 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:00:52,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:00:52,227 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:00:52,228 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:00:52,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:00:52,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:00:52,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:00:52,228 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:00:52,229 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:00:52,229 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:00:52,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:00:52,229 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:00:52,229 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:00:52,507 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:00:52,520 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:00:52,523 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:00:52,524 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:00:52,525 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:00:52,526 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_6.c [2019-10-15 03:00:52,605 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/682906822/9847989286a24cbd9af845b79dc14373/FLAGff175fc16 [2019-10-15 03:00:53,103 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:00:53,105 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_6.c [2019-10-15 03:00:53,113 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/682906822/9847989286a24cbd9af845b79dc14373/FLAGff175fc16 [2019-10-15 03:00:53,416 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/682906822/9847989286a24cbd9af845b79dc14373 [2019-10-15 03:00:53,426 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:00:53,428 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:00:53,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:00:53,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:00:53,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:00:53,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:00:53" (1/1) ... [2019-10-15 03:00:53,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b2439b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:53, skipping insertion in model container [2019-10-15 03:00:53,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:00:53" (1/1) ... [2019-10-15 03:00:53,443 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:00:53,463 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:00:53,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:00:53,673 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:00:53,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:00:53,705 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:00:53,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:53 WrapperNode [2019-10-15 03:00:53,706 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:00:53,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:00:53,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:00:53,707 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:00:53,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:53" (1/1) ... [2019-10-15 03:00:53,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:53" (1/1) ... [2019-10-15 03:00:53,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:53" (1/1) ... [2019-10-15 03:00:53,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:53" (1/1) ... [2019-10-15 03:00:53,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:53" (1/1) ... [2019-10-15 03:00:53,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:53" (1/1) ... [2019-10-15 03:00:53,832 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:53" (1/1) ... [2019-10-15 03:00:53,834 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:00:53,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:00:53,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:00:53,835 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:00:53,836 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:53" (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 [2019-10-15 03:00:53,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:00:53,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:00:53,891 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:00:53,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:00:53,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:00:53,891 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:00:53,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:00:53,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:00:54,314 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:00:54,315 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 03:00:54,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:00:54 BoogieIcfgContainer [2019-10-15 03:00:54,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:00:54,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:00:54,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:00:54,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:00:54,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:00:53" (1/3) ... [2019-10-15 03:00:54,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bebba3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:00:54, skipping insertion in model container [2019-10-15 03:00:54,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:00:53" (2/3) ... [2019-10-15 03:00:54,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bebba3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:00:54, skipping insertion in model container [2019-10-15 03:00:54,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:00:54" (3/3) ... [2019-10-15 03:00:54,324 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_6.c [2019-10-15 03:00:54,331 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:00:54,339 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:00:54,348 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:00:54,373 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:00:54,373 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:00:54,373 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:00:54,373 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:00:54,374 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:00:54,374 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:00:54,374 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:00:54,374 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:00:54,393 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-10-15 03:00:54,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 03:00:54,399 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:00:54,400 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:00:54,402 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:00:54,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:00:54,408 INFO L82 PathProgramCache]: Analyzing trace with hash -154441610, now seen corresponding path program 1 times [2019-10-15 03:00:54,417 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:00:54,417 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827824605] [2019-10-15 03:00:54,417 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:54,418 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:54,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:00:54,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:00:54,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:00:54,586 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827824605] [2019-10-15 03:00:54,587 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:00:54,587 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:00:54,588 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129710299] [2019-10-15 03:00:54,592 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:00:54,592 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:00:54,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:00:54,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:00:54,609 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 4 states. [2019-10-15 03:00:54,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:00:54,674 INFO L93 Difference]: Finished difference Result 50 states and 74 transitions. [2019-10-15 03:00:54,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:00:54,677 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-10-15 03:00:54,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:00:54,690 INFO L225 Difference]: With dead ends: 50 [2019-10-15 03:00:54,690 INFO L226 Difference]: Without dead ends: 35 [2019-10-15 03:00:54,694 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:00:54,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-10-15 03:00:54,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 21. [2019-10-15 03:00:54,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-15 03:00:54,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 31 transitions. [2019-10-15 03:00:54,749 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 31 transitions. Word has length 10 [2019-10-15 03:00:54,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:00:54,750 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 31 transitions. [2019-10-15 03:00:54,750 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:00:54,751 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 31 transitions. [2019-10-15 03:00:54,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-15 03:00:54,752 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:00:54,752 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:00:54,754 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:00:54,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:00:54,755 INFO L82 PathProgramCache]: Analyzing trace with hash -492507938, now seen corresponding path program 1 times [2019-10-15 03:00:54,755 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:00:54,756 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325397091] [2019-10-15 03:00:54,756 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:54,757 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:54,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:00:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:00:54,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:00:54,873 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325397091] [2019-10-15 03:00:54,875 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:00:54,875 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:00:54,875 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319065281] [2019-10-15 03:00:54,877 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:00:54,877 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:00:54,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:00:54,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:00:54,878 INFO L87 Difference]: Start difference. First operand 21 states and 31 transitions. Second operand 4 states. [2019-10-15 03:00:54,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:00:54,905 INFO L93 Difference]: Finished difference Result 35 states and 51 transitions. [2019-10-15 03:00:54,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:00:54,905 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-15 03:00:54,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:00:54,907 INFO L225 Difference]: With dead ends: 35 [2019-10-15 03:00:54,908 INFO L226 Difference]: Without dead ends: 33 [2019-10-15 03:00:54,909 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:00:54,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-10-15 03:00:54,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 21. [2019-10-15 03:00:54,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-15 03:00:54,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 30 transitions. [2019-10-15 03:00:54,920 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 30 transitions. Word has length 11 [2019-10-15 03:00:54,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:00:54,921 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 30 transitions. [2019-10-15 03:00:54,921 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:00:54,922 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 30 transitions. [2019-10-15 03:00:54,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-15 03:00:54,923 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:00:54,923 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:00:54,924 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:00:54,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:00:54,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1912338123, now seen corresponding path program 1 times [2019-10-15 03:00:54,925 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:00:54,925 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101792253] [2019-10-15 03:00:54,926 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:54,927 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:54,927 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:00:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:00:55,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:00:55,015 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101792253] [2019-10-15 03:00:55,016 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:00:55,016 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:00:55,017 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458282360] [2019-10-15 03:00:55,017 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:00:55,018 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:00:55,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:00:55,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:00:55,019 INFO L87 Difference]: Start difference. First operand 21 states and 30 transitions. Second operand 4 states. [2019-10-15 03:00:55,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:00:55,046 INFO L93 Difference]: Finished difference Result 33 states and 46 transitions. [2019-10-15 03:00:55,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:00:55,048 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-10-15 03:00:55,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:00:55,049 INFO L225 Difference]: With dead ends: 33 [2019-10-15 03:00:55,049 INFO L226 Difference]: Without dead ends: 31 [2019-10-15 03:00:55,050 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:00:55,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-10-15 03:00:55,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 21. [2019-10-15 03:00:55,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-15 03:00:55,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 29 transitions. [2019-10-15 03:00:55,055 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 29 transitions. Word has length 12 [2019-10-15 03:00:55,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:00:55,055 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 29 transitions. [2019-10-15 03:00:55,055 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:00:55,055 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 29 transitions. [2019-10-15 03:00:55,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-15 03:00:55,056 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:00:55,056 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:00:55,057 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:00:55,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:00:55,057 INFO L82 PathProgramCache]: Analyzing trace with hash -846844973, now seen corresponding path program 1 times [2019-10-15 03:00:55,057 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:00:55,058 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998263682] [2019-10-15 03:00:55,058 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:55,058 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:55,058 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:00:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:00:55,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:00:55,111 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998263682] [2019-10-15 03:00:55,112 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:00:55,112 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:00:55,112 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67868086] [2019-10-15 03:00:55,113 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:00:55,113 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:00:55,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:00:55,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:00:55,114 INFO L87 Difference]: Start difference. First operand 21 states and 29 transitions. Second operand 4 states. [2019-10-15 03:00:55,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:00:55,140 INFO L93 Difference]: Finished difference Result 31 states and 41 transitions. [2019-10-15 03:00:55,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:00:55,144 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-10-15 03:00:55,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:00:55,145 INFO L225 Difference]: With dead ends: 31 [2019-10-15 03:00:55,145 INFO L226 Difference]: Without dead ends: 29 [2019-10-15 03:00:55,146 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:00:55,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-15 03:00:55,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 21. [2019-10-15 03:00:55,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-15 03:00:55,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 28 transitions. [2019-10-15 03:00:55,154 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 28 transitions. Word has length 13 [2019-10-15 03:00:55,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:00:55,155 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 28 transitions. [2019-10-15 03:00:55,155 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:00:55,155 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 28 transitions. [2019-10-15 03:00:55,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-15 03:00:55,157 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:00:55,157 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:00:55,157 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:00:55,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:00:55,158 INFO L82 PathProgramCache]: Analyzing trace with hash -482174688, now seen corresponding path program 1 times [2019-10-15 03:00:55,158 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:00:55,159 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212839575] [2019-10-15 03:00:55,159 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:55,159 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:55,159 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:00:55,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:00:55,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:00:55,225 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212839575] [2019-10-15 03:00:55,225 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:00:55,225 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:00:55,226 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017665534] [2019-10-15 03:00:55,226 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:00:55,226 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:00:55,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:00:55,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:00:55,229 INFO L87 Difference]: Start difference. First operand 21 states and 28 transitions. Second operand 4 states. [2019-10-15 03:00:55,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:00:55,259 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2019-10-15 03:00:55,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:00:55,259 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-10-15 03:00:55,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:00:55,260 INFO L225 Difference]: With dead ends: 29 [2019-10-15 03:00:55,261 INFO L226 Difference]: Without dead ends: 27 [2019-10-15 03:00:55,261 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:00:55,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-10-15 03:00:55,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2019-10-15 03:00:55,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-15 03:00:55,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2019-10-15 03:00:55,268 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 14 [2019-10-15 03:00:55,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:00:55,270 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2019-10-15 03:00:55,270 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:00:55,271 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2019-10-15 03:00:55,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-15 03:00:55,272 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:00:55,273 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:00:55,273 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:00:55,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:00:55,273 INFO L82 PathProgramCache]: Analyzing trace with hash -2062297400, now seen corresponding path program 1 times [2019-10-15 03:00:55,274 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:00:55,274 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793702326] [2019-10-15 03:00:55,274 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:55,275 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:00:55,275 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:00:55,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:00:55,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:00:55,355 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793702326] [2019-10-15 03:00:55,355 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:00:55,355 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:00:55,355 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288926021] [2019-10-15 03:00:55,356 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:00:55,357 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:00:55,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:00:55,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:00:55,358 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand 4 states. [2019-10-15 03:00:55,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:00:55,377 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2019-10-15 03:00:55,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:00:55,378 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-10-15 03:00:55,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:00:55,378 INFO L225 Difference]: With dead ends: 23 [2019-10-15 03:00:55,378 INFO L226 Difference]: Without dead ends: 0 [2019-10-15 03:00:55,379 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:00:55,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-15 03:00:55,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-15 03:00:55,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-15 03:00:55,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-15 03:00:55,380 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2019-10-15 03:00:55,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:00:55,381 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-15 03:00:55,381 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:00:55,381 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-15 03:00:55,381 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-15 03:00:55,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-15 03:00:55,405 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-15 03:00:55,406 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-15 03:00:55,406 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-15 03:00:55,406 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-15 03:00:55,406 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-15 03:00:55,406 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-15 03:00:55,407 INFO L443 ceAbstractionStarter]: For program point L93(line 93) no Hoare annotation was computed. [2019-10-15 03:00:55,407 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 4 107) no Hoare annotation was computed. [2019-10-15 03:00:55,407 INFO L443 ceAbstractionStarter]: For program point L77-1(lines 27 102) no Hoare annotation was computed. [2019-10-15 03:00:55,407 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 105) no Hoare annotation was computed. [2019-10-15 03:00:55,408 INFO L443 ceAbstractionStarter]: For program point L78(line 78) no Hoare annotation was computed. [2019-10-15 03:00:55,408 INFO L446 ceAbstractionStarter]: At program point L103(lines 5 107) the Hoare annotation is: true [2019-10-15 03:00:55,408 INFO L443 ceAbstractionStarter]: For program point L29(lines 29 31) no Hoare annotation was computed. [2019-10-15 03:00:55,408 INFO L443 ceAbstractionStarter]: For program point L87-1(lines 27 102) no Hoare annotation was computed. [2019-10-15 03:00:55,408 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 4 107) no Hoare annotation was computed. [2019-10-15 03:00:55,408 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 4 107) the Hoare annotation is: true [2019-10-15 03:00:55,409 INFO L443 ceAbstractionStarter]: For program point L88(line 88) no Hoare annotation was computed. [2019-10-15 03:00:55,409 INFO L443 ceAbstractionStarter]: For program point L72-1(lines 27 102) no Hoare annotation was computed. [2019-10-15 03:00:55,409 INFO L446 ceAbstractionStarter]: At program point L97-1(lines 27 102) the Hoare annotation is: true [2019-10-15 03:00:55,409 INFO L443 ceAbstractionStarter]: For program point L73(line 73) no Hoare annotation was computed. [2019-10-15 03:00:55,409 INFO L443 ceAbstractionStarter]: For program point L98(line 98) no Hoare annotation was computed. [2019-10-15 03:00:55,409 INFO L439 ceAbstractionStarter]: At program point L98-1(lines 5 107) the Hoare annotation is: false [2019-10-15 03:00:55,410 INFO L443 ceAbstractionStarter]: For program point L82-1(lines 27 102) no Hoare annotation was computed. [2019-10-15 03:00:55,410 INFO L443 ceAbstractionStarter]: For program point L66-1(lines 27 102) no Hoare annotation was computed. [2019-10-15 03:00:55,410 INFO L443 ceAbstractionStarter]: For program point L83(line 83) no Hoare annotation was computed. [2019-10-15 03:00:55,410 INFO L443 ceAbstractionStarter]: For program point L92-1(lines 27 102) no Hoare annotation was computed. [2019-10-15 03:00:55,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:00:55 BoogieIcfgContainer [2019-10-15 03:00:55,418 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 03:00:55,421 INFO L168 Benchmark]: Toolchain (without parser) took 1992.32 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 103.4 MB in the beginning and 93.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 73.9 MB. Max. memory is 7.1 GB. [2019-10-15 03:00:55,422 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-15 03:00:55,423 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.44 ms. Allocated memory is still 138.9 MB. Free memory was 103.2 MB in the beginning and 93.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-10-15 03:00:55,424 INFO L168 Benchmark]: Boogie Preprocessor took 128.08 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 93.1 MB in the beginning and 180.4 MB in the end (delta: -87.3 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2019-10-15 03:00:55,425 INFO L168 Benchmark]: RCFGBuilder took 481.48 ms. Allocated memory is still 202.9 MB. Free memory was 180.4 MB in the beginning and 157.7 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2019-10-15 03:00:55,426 INFO L168 Benchmark]: TraceAbstraction took 1101.22 ms. Allocated memory is still 202.9 MB. Free memory was 157.7 MB in the beginning and 93.4 MB in the end (delta: 64.2 MB). Peak memory consumption was 64.2 MB. Max. memory is 7.1 GB. [2019-10-15 03:00:55,430 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 122.2 MB in the beginning and 122.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 277.44 ms. Allocated memory is still 138.9 MB. Free memory was 103.2 MB in the beginning and 93.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.08 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 93.1 MB in the beginning and 180.4 MB in the end (delta: -87.3 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 481.48 ms. Allocated memory is still 202.9 MB. Free memory was 180.4 MB in the beginning and 157.7 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1101.22 ms. Allocated memory is still 202.9 MB. Free memory was 157.7 MB in the beginning and 93.4 MB in the end (delta: 64.2 MB). Peak memory consumption was 64.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 105]: 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: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 26 locations, 1 error locations. Result: SAFE, OverallTime: 1.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 167 SDtfs, 116 SDslu, 231 SDs, 0 SdLazy, 56 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 50 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 10 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 69 ConstructedInterpolants, 0 QuantifiedInterpolants, 2503 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...