/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/psyco/psyco_io_1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:09:20,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:09:20,423 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:09:20,438 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:09:20,439 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:09:20,440 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:09:20,441 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:09:20,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:09:20,444 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:09:20,445 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:09:20,446 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:09:20,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:09:20,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:09:20,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:09:20,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:09:20,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:09:20,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:09:20,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:09:20,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:09:20,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:09:20,457 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:09:20,458 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:09:20,460 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:09:20,460 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:09:20,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:09:20,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:09:20,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:09:20,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:09:20,474 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 22:09:20,494 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:09:20,494 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:09:20,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:09:20,495 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:09:20,495 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:09:20,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:09:20,498 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:09:20,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:09:20,498 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:09:20,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:09:20,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:09:20,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:09:20,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:09:20,499 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:09:20,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:09:20,499 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:09:20,499 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:09:20,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:09:20,500 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:09:20,500 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:09:20,500 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:09:20,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:09:20,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:09:20,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:09:20,501 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:09:20,501 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:09:20,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:09:20,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:09:20,502 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:09:20,753 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:09:20,766 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:09:20,770 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:09:20,772 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:09:20,772 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:09:20,773 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_io_1.c [2019-11-06 22:09:20,835 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fea92c1f8/923312f72f604538b77d5502bb6c9b74/FLAGdd5773a75 [2019-11-06 22:09:21,276 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:09:21,277 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_io_1.c [2019-11-06 22:09:21,287 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fea92c1f8/923312f72f604538b77d5502bb6c9b74/FLAGdd5773a75 [2019-11-06 22:09:21,672 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fea92c1f8/923312f72f604538b77d5502bb6c9b74 [2019-11-06 22:09:21,682 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:09:21,684 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:09:21,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:09:21,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:09:21,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:09:21,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:09:21" (1/1) ... [2019-11-06 22:09:21,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245ee514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:21, skipping insertion in model container [2019-11-06 22:09:21,692 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:09:21" (1/1) ... [2019-11-06 22:09:21,700 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:09:21,743 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:09:21,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:09:21,981 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:09:22,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:09:22,116 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:09:22,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:22 WrapperNode [2019-11-06 22:09:22,117 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:09:22,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:09:22,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:09:22,117 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:09:22,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:22" (1/1) ... [2019-11-06 22:09:22,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:22" (1/1) ... [2019-11-06 22:09:22,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:22" (1/1) ... [2019-11-06 22:09:22,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:22" (1/1) ... [2019-11-06 22:09:22,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:22" (1/1) ... [2019-11-06 22:09:22,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:22" (1/1) ... [2019-11-06 22:09:22,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:22" (1/1) ... [2019-11-06 22:09:22,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:09:22,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:09:22,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:09:22,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:09:22,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:09:22,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:09:22,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:09:22,227 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:09:22,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:09:22,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:09:22,227 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:09:22,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:09:22,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:09:22,676 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:09:22,676 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-06 22:09:22,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:09:22 BoogieIcfgContainer [2019-11-06 22:09:22,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:09:22,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:09:22,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:09:22,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:09:22,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:09:21" (1/3) ... [2019-11-06 22:09:22,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d702c57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:09:22, skipping insertion in model container [2019-11-06 22:09:22,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:09:22" (2/3) ... [2019-11-06 22:09:22,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d702c57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:09:22, skipping insertion in model container [2019-11-06 22:09:22,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:09:22" (3/3) ... [2019-11-06 22:09:22,685 INFO L109 eAbstractionObserver]: Analyzing ICFG psyco_io_1.c [2019-11-06 22:09:22,695 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:09:22,704 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:09:22,715 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:09:22,743 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:09:22,743 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:09:22,743 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:09:22,743 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:09:22,744 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:09:22,744 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:09:22,744 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:09:22,744 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:09:22,762 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2019-11-06 22:09:22,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-06 22:09:22,768 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:09:22,769 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:09:22,770 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:09:22,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:09:22,775 INFO L82 PathProgramCache]: Analyzing trace with hash -901605196, now seen corresponding path program 1 times [2019-11-06 22:09:22,784 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:09:22,785 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060232350] [2019-11-06 22:09:22,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:09:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:22,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:22,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:09:22,975 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060232350] [2019-11-06 22:09:22,976 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:09:22,976 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:09:22,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238337234] [2019-11-06 22:09:22,983 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:09:22,983 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:09:22,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:09:22,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:09:22,997 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 3 states. [2019-11-06 22:09:23,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:09:23,050 INFO L93 Difference]: Finished difference Result 136 states and 250 transitions. [2019-11-06 22:09:23,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:09:23,052 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-11-06 22:09:23,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:09:23,065 INFO L225 Difference]: With dead ends: 136 [2019-11-06 22:09:23,066 INFO L226 Difference]: Without dead ends: 61 [2019-11-06 22:09:23,070 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:09:23,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-11-06 22:09:23,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2019-11-06 22:09:23,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-11-06 22:09:23,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 91 transitions. [2019-11-06 22:09:23,119 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 91 transitions. Word has length 13 [2019-11-06 22:09:23,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:09:23,120 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 91 transitions. [2019-11-06 22:09:23,120 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:09:23,120 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 91 transitions. [2019-11-06 22:09:23,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-06 22:09:23,122 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:09:23,122 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:09:23,122 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:09:23,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:09:23,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1647463811, now seen corresponding path program 1 times [2019-11-06 22:09:23,123 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:09:23,124 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539206703] [2019-11-06 22:09:23,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:09:23,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:23,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:23,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:09:23,210 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539206703] [2019-11-06 22:09:23,210 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:09:23,210 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:09:23,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807511982] [2019-11-06 22:09:23,216 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:09:23,216 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:09:23,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:09:23,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:09:23,220 INFO L87 Difference]: Start difference. First operand 61 states and 91 transitions. Second operand 4 states. [2019-11-06 22:09:23,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:09:23,443 INFO L93 Difference]: Finished difference Result 119 states and 180 transitions. [2019-11-06 22:09:23,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:09:23,443 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-06 22:09:23,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:09:23,445 INFO L225 Difference]: With dead ends: 119 [2019-11-06 22:09:23,445 INFO L226 Difference]: Without dead ends: 64 [2019-11-06 22:09:23,447 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:09:23,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-11-06 22:09:23,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2019-11-06 22:09:23,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2019-11-06 22:09:23,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 94 transitions. [2019-11-06 22:09:23,459 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 94 transitions. Word has length 14 [2019-11-06 22:09:23,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:09:23,459 INFO L462 AbstractCegarLoop]: Abstraction has 64 states and 94 transitions. [2019-11-06 22:09:23,459 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:09:23,460 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 94 transitions. [2019-11-06 22:09:23,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-06 22:09:23,461 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:09:23,461 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:09:23,461 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:09:23,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:09:23,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1212559863, now seen corresponding path program 1 times [2019-11-06 22:09:23,462 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:09:23,462 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913289570] [2019-11-06 22:09:23,463 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:09:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:23,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:23,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:09:23,569 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913289570] [2019-11-06 22:09:23,572 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:09:23,572 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:09:23,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501602524] [2019-11-06 22:09:23,587 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:09:23,587 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:09:23,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:09:23,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:09:23,588 INFO L87 Difference]: Start difference. First operand 64 states and 94 transitions. Second operand 4 states. [2019-11-06 22:09:23,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:09:23,669 INFO L93 Difference]: Finished difference Result 113 states and 169 transitions. [2019-11-06 22:09:23,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:09:23,670 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2019-11-06 22:09:23,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:09:23,671 INFO L225 Difference]: With dead ends: 113 [2019-11-06 22:09:23,671 INFO L226 Difference]: Without dead ends: 56 [2019-11-06 22:09:23,672 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:09:23,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-06 22:09:23,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2019-11-06 22:09:23,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-11-06 22:09:23,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 80 transitions. [2019-11-06 22:09:23,681 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 80 transitions. Word has length 19 [2019-11-06 22:09:23,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:09:23,681 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 80 transitions. [2019-11-06 22:09:23,681 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:09:23,681 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 80 transitions. [2019-11-06 22:09:23,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-06 22:09:23,682 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:09:23,683 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:09:23,683 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:09:23,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:09:23,683 INFO L82 PathProgramCache]: Analyzing trace with hash -2054021688, now seen corresponding path program 1 times [2019-11-06 22:09:23,684 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:09:23,684 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906150718] [2019-11-06 22:09:23,684 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:09:23,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:23,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:23,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:09:23,777 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906150718] [2019-11-06 22:09:23,777 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:09:23,777 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:09:23,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574361905] [2019-11-06 22:09:23,778 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:09:23,778 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:09:23,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:09:23,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:09:23,779 INFO L87 Difference]: Start difference. First operand 56 states and 80 transitions. Second operand 4 states. [2019-11-06 22:09:23,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:09:23,967 INFO L93 Difference]: Finished difference Result 140 states and 210 transitions. [2019-11-06 22:09:23,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:09:23,968 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2019-11-06 22:09:23,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:09:23,971 INFO L225 Difference]: With dead ends: 140 [2019-11-06 22:09:23,973 INFO L226 Difference]: Without dead ends: 94 [2019-11-06 22:09:23,974 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:09:23,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2019-11-06 22:09:23,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 91. [2019-11-06 22:09:23,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2019-11-06 22:09:23,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 132 transitions. [2019-11-06 22:09:23,995 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 132 transitions. Word has length 24 [2019-11-06 22:09:23,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:09:23,995 INFO L462 AbstractCegarLoop]: Abstraction has 91 states and 132 transitions. [2019-11-06 22:09:23,995 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:09:23,995 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 132 transitions. [2019-11-06 22:09:23,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-06 22:09:23,997 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:09:23,998 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:09:23,999 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:09:23,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:09:23,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1279925660, now seen corresponding path program 1 times [2019-11-06 22:09:24,000 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:09:24,000 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919774503] [2019-11-06 22:09:24,000 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:09:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:24,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:24,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:09:24,064 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919774503] [2019-11-06 22:09:24,064 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:09:24,064 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:09:24,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476322643] [2019-11-06 22:09:24,069 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:09:24,070 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:09:24,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:09:24,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:09:24,070 INFO L87 Difference]: Start difference. First operand 91 states and 132 transitions. Second operand 4 states. [2019-11-06 22:09:24,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:09:24,168 INFO L93 Difference]: Finished difference Result 180 states and 262 transitions. [2019-11-06 22:09:24,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:09:24,170 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2019-11-06 22:09:24,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:09:24,171 INFO L225 Difference]: With dead ends: 180 [2019-11-06 22:09:24,171 INFO L226 Difference]: Without dead ends: 101 [2019-11-06 22:09:24,172 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:09:24,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2019-11-06 22:09:24,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2019-11-06 22:09:24,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2019-11-06 22:09:24,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 140 transitions. [2019-11-06 22:09:24,183 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 140 transitions. Word has length 25 [2019-11-06 22:09:24,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:09:24,183 INFO L462 AbstractCegarLoop]: Abstraction has 99 states and 140 transitions. [2019-11-06 22:09:24,184 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:09:24,184 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 140 transitions. [2019-11-06 22:09:24,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-06 22:09:24,185 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:09:24,185 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:09:24,186 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:09:24,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:09:24,186 INFO L82 PathProgramCache]: Analyzing trace with hash -964230168, now seen corresponding path program 1 times [2019-11-06 22:09:24,186 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:09:24,186 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660020255] [2019-11-06 22:09:24,187 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:09:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:24,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:24,261 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-06 22:09:24,264 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660020255] [2019-11-06 22:09:24,264 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:09:24,264 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:09:24,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946035162] [2019-11-06 22:09:24,265 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:09:24,265 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:09:24,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:09:24,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:09:24,266 INFO L87 Difference]: Start difference. First operand 99 states and 140 transitions. Second operand 4 states. [2019-11-06 22:09:24,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:09:24,365 INFO L93 Difference]: Finished difference Result 164 states and 234 transitions. [2019-11-06 22:09:24,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:09:24,366 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2019-11-06 22:09:24,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:09:24,368 INFO L225 Difference]: With dead ends: 164 [2019-11-06 22:09:24,369 INFO L226 Difference]: Without dead ends: 77 [2019-11-06 22:09:24,372 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:09:24,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2019-11-06 22:09:24,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2019-11-06 22:09:24,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2019-11-06 22:09:24,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 105 transitions. [2019-11-06 22:09:24,387 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 105 transitions. Word has length 36 [2019-11-06 22:09:24,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:09:24,388 INFO L462 AbstractCegarLoop]: Abstraction has 77 states and 105 transitions. [2019-11-06 22:09:24,388 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:09:24,389 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 105 transitions. [2019-11-06 22:09:24,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-06 22:09:24,393 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:09:24,393 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:09:24,393 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:09:24,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:09:24,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1856126908, now seen corresponding path program 1 times [2019-11-06 22:09:24,395 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:09:24,396 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615069085] [2019-11-06 22:09:24,397 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:09:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:24,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:09:24,542 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-06 22:09:24,545 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615069085] [2019-11-06 22:09:24,545 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:09:24,545 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:09:24,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954921220] [2019-11-06 22:09:24,546 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:09:24,546 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:09:24,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:09:24,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:09:24,547 INFO L87 Difference]: Start difference. First operand 77 states and 105 transitions. Second operand 5 states. [2019-11-06 22:09:24,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:09:24,763 INFO L93 Difference]: Finished difference Result 80 states and 108 transitions. [2019-11-06 22:09:24,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-06 22:09:24,763 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2019-11-06 22:09:24,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:09:24,764 INFO L225 Difference]: With dead ends: 80 [2019-11-06 22:09:24,764 INFO L226 Difference]: Without dead ends: 0 [2019-11-06 22:09:24,765 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-06 22:09:24,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-06 22:09:24,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-06 22:09:24,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-06 22:09:24,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-06 22:09:24,766 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2019-11-06 22:09:24,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:09:24,766 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-06 22:09:24,766 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:09:24,766 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-06 22:09:24,766 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-06 22:09:24,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-06 22:09:24,966 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-11-06 22:09:24,967 INFO L439 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~m_connect_1~0 |old(~m_connect_1~0)|) (= ~m_close~0 |old(~m_close~0)|) (= ~m_PipedOutputStream~0 |old(~m_PipedOutputStream~0)|) (= ~m_write~0 |old(~m_write~0)|) (= ~m_flush~0 |old(~m_flush~0)|) (= ~m_connect_2~0 |old(~m_connect_2~0)|)) [2019-11-06 22:09:24,967 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-06 22:09:24,967 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-06 22:09:24,967 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-06 22:09:24,967 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-06 22:09:24,967 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-06 22:09:24,968 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 13 344) no Hoare annotation was computed. [2019-11-06 22:09:24,968 INFO L443 ceAbstractionStarter]: For program point L36(lines 36 47) no Hoare annotation was computed. [2019-11-06 22:09:24,968 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 343) no Hoare annotation was computed. [2019-11-06 22:09:24,968 INFO L443 ceAbstractionStarter]: For program point L86(lines 86 101) no Hoare annotation was computed. [2019-11-06 22:09:24,968 INFO L443 ceAbstractionStarter]: For program point L53(lines 53 104) no Hoare annotation was computed. [2019-11-06 22:09:24,968 INFO L443 ceAbstractionStarter]: For program point L202(lines 202 217) no Hoare annotation was computed. [2019-11-06 22:09:24,968 INFO L443 ceAbstractionStarter]: For program point L70(lines 70 85) no Hoare annotation was computed. [2019-11-06 22:09:24,969 INFO L443 ceAbstractionStarter]: For program point L318(lines 318 333) no Hoare annotation was computed. [2019-11-06 22:09:24,969 INFO L443 ceAbstractionStarter]: For program point L186(lines 186 201) no Hoare annotation was computed. [2019-11-06 22:09:24,969 INFO L443 ceAbstractionStarter]: For program point L54(lines 54 69) no Hoare annotation was computed. [2019-11-06 22:09:24,969 INFO L439 ceAbstractionStarter]: At program point L335(lines 23 339) the Hoare annotation is: (let ((.cse0 (= main_~this_sink~0 0))) (or (and (= main_~q~0 0) .cse0) (and (<= 3 main_~q~0) (not .cse0)) (and (= 2 main_~q~0) .cse0))) [2019-11-06 22:09:24,969 INFO L443 ceAbstractionStarter]: For program point L302(lines 302 317) no Hoare annotation was computed. [2019-11-06 22:09:24,969 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 13 344) no Hoare annotation was computed. [2019-11-06 22:09:24,969 INFO L443 ceAbstractionStarter]: For program point L170(lines 170 185) no Hoare annotation was computed. [2019-11-06 22:09:24,970 INFO L443 ceAbstractionStarter]: For program point L286(lines 286 301) no Hoare annotation was computed. [2019-11-06 22:09:24,970 INFO L443 ceAbstractionStarter]: For program point L154(lines 154 169) no Hoare annotation was computed. [2019-11-06 22:09:24,970 INFO L443 ceAbstractionStarter]: For program point L88(lines 88 99) no Hoare annotation was computed. [2019-11-06 22:09:24,970 INFO L443 ceAbstractionStarter]: For program point L270(lines 270 285) no Hoare annotation was computed. [2019-11-06 22:09:24,970 INFO L443 ceAbstractionStarter]: For program point L204(lines 204 215) no Hoare annotation was computed. [2019-11-06 22:09:24,970 INFO L443 ceAbstractionStarter]: For program point L138(lines 138 153) no Hoare annotation was computed. [2019-11-06 22:09:24,970 INFO L443 ceAbstractionStarter]: For program point L105(lines 105 220) no Hoare annotation was computed. [2019-11-06 22:09:24,971 INFO L443 ceAbstractionStarter]: For program point L72(lines 72 83) no Hoare annotation was computed. [2019-11-06 22:09:24,972 INFO L443 ceAbstractionStarter]: For program point L320(lines 320 331) no Hoare annotation was computed. [2019-11-06 22:09:24,972 INFO L443 ceAbstractionStarter]: For program point L254(lines 254 269) no Hoare annotation was computed. [2019-11-06 22:09:24,972 INFO L443 ceAbstractionStarter]: For program point L221(lines 221 336) no Hoare annotation was computed. [2019-11-06 22:09:24,972 INFO L443 ceAbstractionStarter]: For program point L188(lines 188 199) no Hoare annotation was computed. [2019-11-06 22:09:24,973 INFO L443 ceAbstractionStarter]: For program point L122(lines 122 137) no Hoare annotation was computed. [2019-11-06 22:09:24,974 INFO L443 ceAbstractionStarter]: For program point L56(lines 56 67) no Hoare annotation was computed. [2019-11-06 22:09:24,974 INFO L439 ceAbstractionStarter]: At program point L23-2(lines 23 339) the Hoare annotation is: (let ((.cse0 (= main_~this_sink~0 0))) (or (and (= main_~q~0 0) .cse0) (and (<= 3 main_~q~0) (not .cse0)))) [2019-11-06 22:09:24,974 INFO L443 ceAbstractionStarter]: For program point L23-3(lines 23 339) no Hoare annotation was computed. [2019-11-06 22:09:24,974 INFO L443 ceAbstractionStarter]: For program point L304(lines 304 315) no Hoare annotation was computed. [2019-11-06 22:09:24,975 INFO L443 ceAbstractionStarter]: For program point L238(lines 238 253) no Hoare annotation was computed. [2019-11-06 22:09:24,975 INFO L443 ceAbstractionStarter]: For program point L172(lines 172 183) no Hoare annotation was computed. [2019-11-06 22:09:24,975 INFO L443 ceAbstractionStarter]: For program point L106(lines 106 121) no Hoare annotation was computed. [2019-11-06 22:09:24,975 INFO L443 ceAbstractionStarter]: For program point L40(lines 40 42) no Hoare annotation was computed. [2019-11-06 22:09:24,975 INFO L443 ceAbstractionStarter]: For program point L288(lines 288 299) no Hoare annotation was computed. [2019-11-06 22:09:24,975 INFO L443 ceAbstractionStarter]: For program point L222(lines 222 237) no Hoare annotation was computed. [2019-11-06 22:09:24,975 INFO L443 ceAbstractionStarter]: For program point L156(lines 156 167) no Hoare annotation was computed. [2019-11-06 22:09:24,975 INFO L443 ceAbstractionStarter]: For program point L272(lines 272 283) no Hoare annotation was computed. [2019-11-06 22:09:24,976 INFO L443 ceAbstractionStarter]: For program point L140(lines 140 151) no Hoare annotation was computed. [2019-11-06 22:09:24,976 INFO L443 ceAbstractionStarter]: For program point L256(lines 256 267) no Hoare annotation was computed. [2019-11-06 22:09:24,976 INFO L443 ceAbstractionStarter]: For program point L124(lines 124 135) no Hoare annotation was computed. [2019-11-06 22:09:24,976 INFO L443 ceAbstractionStarter]: For program point L240(lines 240 251) no Hoare annotation was computed. [2019-11-06 22:09:24,976 INFO L443 ceAbstractionStarter]: For program point L108(lines 108 119) no Hoare annotation was computed. [2019-11-06 22:09:24,977 INFO L443 ceAbstractionStarter]: For program point L224(lines 224 235) no Hoare annotation was computed. [2019-11-06 22:09:24,977 INFO L443 ceAbstractionStarter]: For program point L92(lines 92 94) no Hoare annotation was computed. [2019-11-06 22:09:24,977 INFO L443 ceAbstractionStarter]: For program point L208(lines 208 210) no Hoare annotation was computed. [2019-11-06 22:09:24,977 INFO L443 ceAbstractionStarter]: For program point L76(lines 76 78) no Hoare annotation was computed. [2019-11-06 22:09:24,977 INFO L443 ceAbstractionStarter]: For program point L324(lines 324 326) no Hoare annotation was computed. [2019-11-06 22:09:24,977 INFO L443 ceAbstractionStarter]: For program point L192(lines 192 194) no Hoare annotation was computed. [2019-11-06 22:09:24,978 INFO L443 ceAbstractionStarter]: For program point L60(lines 60 62) no Hoare annotation was computed. [2019-11-06 22:09:24,978 INFO L443 ceAbstractionStarter]: For program point L308(lines 308 310) no Hoare annotation was computed. [2019-11-06 22:09:24,978 INFO L443 ceAbstractionStarter]: For program point L176(lines 176 178) no Hoare annotation was computed. [2019-11-06 22:09:24,978 INFO L439 ceAbstractionStarter]: At program point L325(lines 13 344) the Hoare annotation is: false [2019-11-06 22:09:24,978 INFO L443 ceAbstractionStarter]: For program point L292(lines 292 294) no Hoare annotation was computed. [2019-11-06 22:09:24,978 INFO L443 ceAbstractionStarter]: For program point L160(lines 160 162) no Hoare annotation was computed. [2019-11-06 22:09:24,979 INFO L443 ceAbstractionStarter]: For program point L276(lines 276 278) no Hoare annotation was computed. [2019-11-06 22:09:24,979 INFO L443 ceAbstractionStarter]: For program point L144(lines 144 146) no Hoare annotation was computed. [2019-11-06 22:09:24,979 INFO L443 ceAbstractionStarter]: For program point L260(lines 260 262) no Hoare annotation was computed. [2019-11-06 22:09:24,979 INFO L443 ceAbstractionStarter]: For program point L128(lines 128 130) no Hoare annotation was computed. [2019-11-06 22:09:24,981 INFO L443 ceAbstractionStarter]: For program point L244(lines 244 246) no Hoare annotation was computed. [2019-11-06 22:09:24,981 INFO L443 ceAbstractionStarter]: For program point L112(lines 112 114) no Hoare annotation was computed. [2019-11-06 22:09:24,981 INFO L443 ceAbstractionStarter]: For program point L228(lines 228 230) no Hoare annotation was computed. [2019-11-06 22:09:24,981 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 13 344) the Hoare annotation is: true [2019-11-06 22:09:24,981 INFO L443 ceAbstractionStarter]: For program point L33(lines 33 52) no Hoare annotation was computed. [2019-11-06 22:09:24,981 INFO L443 ceAbstractionStarter]: For program point L34(lines 34 49) no Hoare annotation was computed. [2019-11-06 22:09:25,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:09:25 BoogieIcfgContainer [2019-11-06 22:09:25,001 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-06 22:09:25,003 INFO L168 Benchmark]: Toolchain (without parser) took 3318.96 ms. Allocated memory was 142.1 MB in the beginning and 246.4 MB in the end (delta: 104.3 MB). Free memory was 101.6 MB in the beginning and 182.5 MB in the end (delta: -80.9 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2019-11-06 22:09:25,004 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 142.1 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-11-06 22:09:25,005 INFO L168 Benchmark]: CACSL2BoogieTranslator took 432.32 ms. Allocated memory was 142.1 MB in the beginning and 202.9 MB in the end (delta: 60.8 MB). Free memory was 101.4 MB in the beginning and 181.5 MB in the end (delta: -80.2 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2019-11-06 22:09:25,006 INFO L168 Benchmark]: Boogie Preprocessor took 44.38 ms. Allocated memory is still 202.9 MB. Free memory was 181.5 MB in the beginning and 179.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-11-06 22:09:25,007 INFO L168 Benchmark]: RCFGBuilder took 515.64 ms. Allocated memory is still 202.9 MB. Free memory was 178.9 MB in the beginning and 152.4 MB in the end (delta: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2019-11-06 22:09:25,008 INFO L168 Benchmark]: TraceAbstraction took 2322.39 ms. Allocated memory was 202.9 MB in the beginning and 246.4 MB in the end (delta: 43.5 MB). Free memory was 152.4 MB in the beginning and 182.5 MB in the end (delta: -30.1 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2019-11-06 22:09:25,013 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 142.1 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 432.32 ms. Allocated memory was 142.1 MB in the beginning and 202.9 MB in the end (delta: 60.8 MB). Free memory was 101.4 MB in the beginning and 181.5 MB in the end (delta: -80.2 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 44.38 ms. Allocated memory is still 202.9 MB. Free memory was 181.5 MB in the beginning and 179.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 515.64 ms. Allocated memory is still 202.9 MB. Free memory was 178.9 MB in the beginning and 152.4 MB in the end (delta: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2322.39 ms. Allocated memory was 202.9 MB in the beginning and 246.4 MB in the end (delta: 43.5 MB). Free memory was 152.4 MB in the beginning and 182.5 MB in the end (delta: -30.1 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 343]: 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: 23]: Loop Invariant Derived loop invariant: ((q == 0 && this_sink == 0) || (3 <= q && !(this_sink == 0))) || (2 == q && this_sink == 0) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (q == 0 && this_sink == 0) || (3 <= q && !(this_sink == 0)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 73 locations, 1 error locations. Result: SAFE, OverallTime: 2.2s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 549 SDtfs, 777 SDslu, 50 SDs, 0 SdLazy, 351 SolverSat, 47 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=5, 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, 7 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 14 NumberOfFragments, 62 HoareAnnotationTreeSize, 7 FomulaSimplifications, 65 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 117 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 168 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 161 ConstructedInterpolants, 0 QuantifiedInterpolants, 9729 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 27/27 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...