/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/array-examples/sorting_bubblesort_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:26:20,619 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:26:20,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:26:20,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:26:20,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:26:20,642 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:26:20,644 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:26:20,653 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:26:20,655 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:26:20,656 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:26:20,657 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:26:20,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:26:20,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:26:20,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:26:20,661 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:26:20,662 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:26:20,663 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:26:20,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:26:20,665 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:26:20,667 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:26:20,668 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:26:20,669 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:26:20,670 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:26:20,671 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:26:20,673 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:26:20,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:26:20,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:26:20,681 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:26:20,682 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 22:26:20,695 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:26:20,696 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:26:20,697 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:26:20,697 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:26:20,697 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:26:20,697 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:26:20,698 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:26:20,698 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:26:20,698 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:26:20,698 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:26:20,698 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:26:20,699 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:26:20,699 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:26:20,699 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:26:20,699 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:26:20,699 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:26:20,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:26:20,700 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:26:20,700 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:26:20,700 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:26:20,700 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:26:20,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:26:20,701 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:26:20,701 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:26:20,701 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:26:20,701 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:26:20,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:26:20,702 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:26:20,702 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-06 22:26:20,972 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:26:20,992 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:26:20,996 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:26:20,997 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:26:20,998 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:26:20,998 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/sorting_bubblesort_ground-2.i [2019-11-06 22:26:21,074 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62aa6d28e/a63d66692a71437f86cc066714f283fc/FLAGa4dd93d77 [2019-11-06 22:26:21,505 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:26:21,507 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/sorting_bubblesort_ground-2.i [2019-11-06 22:26:21,514 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62aa6d28e/a63d66692a71437f86cc066714f283fc/FLAGa4dd93d77 [2019-11-06 22:26:21,840 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62aa6d28e/a63d66692a71437f86cc066714f283fc [2019-11-06 22:26:21,848 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:26:21,849 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:26:21,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:26:21,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:26:21,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:26:21,854 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:26:21" (1/1) ... [2019-11-06 22:26:21,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15beb6c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:21, skipping insertion in model container [2019-11-06 22:26:21,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:26:21" (1/1) ... [2019-11-06 22:26:21,865 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:26:21,883 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:26:22,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:26:22,091 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:26:22,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:26:22,204 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:26:22,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:22 WrapperNode [2019-11-06 22:26:22,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:26:22,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:26:22,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:26:22,208 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:26:22,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:22" (1/1) ... [2019-11-06 22:26:22,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:22" (1/1) ... [2019-11-06 22:26:22,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:22" (1/1) ... [2019-11-06 22:26:22,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:22" (1/1) ... [2019-11-06 22:26:22,234 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:22" (1/1) ... [2019-11-06 22:26:22,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:22" (1/1) ... [2019-11-06 22:26:22,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:22" (1/1) ... [2019-11-06 22:26:22,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:26:22,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:26:22,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:26:22,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:26:22,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:22" (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 22:26:22,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:26:22,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:26:22,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 22:26:22,302 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:26:22,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:26:22,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 22:26:22,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:26:22,303 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:26:22,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:26:22,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:26:22,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:26:22,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:26:22,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:26:22,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:26:22,599 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:26:22,600 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-06 22:26:22,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:22 BoogieIcfgContainer [2019-11-06 22:26:22,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:26:22,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:26:22,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:26:22,615 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:26:22,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:26:21" (1/3) ... [2019-11-06 22:26:22,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15faa73d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:26:22, skipping insertion in model container [2019-11-06 22:26:22,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:22" (2/3) ... [2019-11-06 22:26:22,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15faa73d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:26:22, skipping insertion in model container [2019-11-06 22:26:22,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:22" (3/3) ... [2019-11-06 22:26:22,618 INFO L109 eAbstractionObserver]: Analyzing ICFG sorting_bubblesort_ground-2.i [2019-11-06 22:26:22,626 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:26:22,632 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:26:22,644 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:26:22,668 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:26:22,668 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:26:22,668 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:26:22,668 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:26:22,669 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:26:22,669 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:26:22,669 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:26:22,669 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:26:22,686 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2019-11-06 22:26:22,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-06 22:26:22,692 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:22,692 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:26:22,694 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:22,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:22,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1296691801, now seen corresponding path program 1 times [2019-11-06 22:26:22,707 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:22,707 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115193861] [2019-11-06 22:26:22,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:22,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:22,827 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 22:26:22,828 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115193861] [2019-11-06 22:26:22,828 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:26:22,828 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-06 22:26:22,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371731038] [2019-11-06 22:26:22,834 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:26:22,835 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:22,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 22:26:22,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 22:26:22,853 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2019-11-06 22:26:22,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:22,877 INFO L93 Difference]: Finished difference Result 54 states and 75 transitions. [2019-11-06 22:26:22,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:26:22,879 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-11-06 22:26:22,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:22,887 INFO L225 Difference]: With dead ends: 54 [2019-11-06 22:26:22,888 INFO L226 Difference]: Without dead ends: 26 [2019-11-06 22:26:22,891 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 22:26:22,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-06 22:26:22,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-06 22:26:22,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-06 22:26:22,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2019-11-06 22:26:22,932 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 16 [2019-11-06 22:26:22,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:22,933 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2019-11-06 22:26:22,933 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:26:22,933 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2019-11-06 22:26:22,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-06 22:26:22,934 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:22,935 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:26:22,935 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:22,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:22,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1547542812, now seen corresponding path program 1 times [2019-11-06 22:26:22,936 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:22,936 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926396428] [2019-11-06 22:26:22,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:22,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:22,992 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 22:26:22,992 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926396428] [2019-11-06 22:26:22,993 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:26:22,993 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:26:22,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457596471] [2019-11-06 22:26:22,995 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:26:22,995 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:22,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:26:22,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:26:22,996 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 3 states. [2019-11-06 22:26:23,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:23,031 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2019-11-06 22:26:23,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:26:23,032 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-11-06 22:26:23,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:23,033 INFO L225 Difference]: With dead ends: 46 [2019-11-06 22:26:23,033 INFO L226 Difference]: Without dead ends: 28 [2019-11-06 22:26:23,034 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:26:23,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-06 22:26:23,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2019-11-06 22:26:23,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-06 22:26:23,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2019-11-06 22:26:23,045 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 16 [2019-11-06 22:26:23,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:23,045 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2019-11-06 22:26:23,045 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:26:23,045 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2019-11-06 22:26:23,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-06 22:26:23,048 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:23,049 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:26:23,049 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:23,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:23,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1387426810, now seen corresponding path program 1 times [2019-11-06 22:26:23,050 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:23,051 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149429650] [2019-11-06 22:26:23,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:23,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:26:23,141 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149429650] [2019-11-06 22:26:23,141 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:26:23,141 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:26:23,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401495957] [2019-11-06 22:26:23,142 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:26:23,143 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:23,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:26:23,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:26:23,144 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand 3 states. [2019-11-06 22:26:23,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:23,165 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2019-11-06 22:26:23,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:26:23,167 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-11-06 22:26:23,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:23,168 INFO L225 Difference]: With dead ends: 44 [2019-11-06 22:26:23,168 INFO L226 Difference]: Without dead ends: 31 [2019-11-06 22:26:23,169 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:26:23,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-06 22:26:23,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-11-06 22:26:23,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-06 22:26:23,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2019-11-06 22:26:23,176 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 18 [2019-11-06 22:26:23,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:23,177 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2019-11-06 22:26:23,177 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:26:23,177 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2019-11-06 22:26:23,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-06 22:26:23,178 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:23,178 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:26:23,179 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:23,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:23,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1108929549, now seen corresponding path program 1 times [2019-11-06 22:26:23,179 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:23,180 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465345214] [2019-11-06 22:26:23,180 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:23,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:23,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:26:23,224 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465345214] [2019-11-06 22:26:23,224 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:26:23,225 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:26:23,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702926741] [2019-11-06 22:26:23,227 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:26:23,227 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:23,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:26:23,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:26:23,231 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand 3 states. [2019-11-06 22:26:23,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:23,263 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2019-11-06 22:26:23,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:26:23,264 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2019-11-06 22:26:23,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:23,265 INFO L225 Difference]: With dead ends: 56 [2019-11-06 22:26:23,266 INFO L226 Difference]: Without dead ends: 35 [2019-11-06 22:26:23,266 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:26:23,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-06 22:26:23,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2019-11-06 22:26:23,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-06 22:26:23,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2019-11-06 22:26:23,276 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 20 [2019-11-06 22:26:23,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:23,276 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2019-11-06 22:26:23,276 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:26:23,277 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2019-11-06 22:26:23,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-06 22:26:23,278 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:23,278 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:26:23,278 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:23,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:23,279 INFO L82 PathProgramCache]: Analyzing trace with hash -2055572838, now seen corresponding path program 1 times [2019-11-06 22:26:23,279 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:23,279 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849073645] [2019-11-06 22:26:23,279 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:23,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:23,339 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-06 22:26:23,340 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849073645] [2019-11-06 22:26:23,340 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901526625] [2019-11-06 22:26:23,340 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:26:23,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:23,412 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 22:26:23,420 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:26:23,460 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-06 22:26:23,463 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:26:23,499 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-06 22:26:23,500 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1177330620] [2019-11-06 22:26:23,507 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 24 [2019-11-06 22:26:23,540 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-06 22:26:23,540 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-06 22:26:23,599 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-06 22:26:23,600 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 15 root evaluator evaluations with a maximum evaluation depth of 0. Performed 15 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 25 variables. [2019-11-06 22:26:23,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:23,603 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-06 22:26:23,637 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-11-06 22:26:23,637 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-06 22:26:23,639 INFO L553 sIntCurrentIteration]: We unified 22 AI predicates to 22 [2019-11-06 22:26:23,639 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-06 22:26:23,640 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-06 22:26:23,640 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 7 [2019-11-06 22:26:23,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166994409] [2019-11-06 22:26:23,641 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:26:23,641 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:23,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:26:23,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:26:23,642 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 2 states. [2019-11-06 22:26:23,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:23,645 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2019-11-06 22:26:23,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:26:23,645 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2019-11-06 22:26:23,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:23,646 INFO L225 Difference]: With dead ends: 32 [2019-11-06 22:26:23,646 INFO L226 Difference]: Without dead ends: 0 [2019-11-06 22:26:23,647 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:26:23,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-06 22:26:23,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-06 22:26:23,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-06 22:26:23,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-06 22:26:23,648 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2019-11-06 22:26:23,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:23,648 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-06 22:26:23,648 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:26:23,648 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-06 22:26:23,649 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-06 22:26:23,852 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:26:23,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-06 22:26:23,902 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-11-06 22:26:23,903 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-11-06 22:26:23,903 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-06 22:26:23,903 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-06 22:26:23,903 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-06 22:26:23,903 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-06 22:26:23,903 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-06 22:26:23,904 INFO L439 ceAbstractionStarter]: At program point L31(line 31) the Hoare annotation is: false [2019-11-06 22:26:23,904 INFO L443 ceAbstractionStarter]: For program point L31-1(line 31) no Hoare annotation was computed. [2019-11-06 22:26:23,904 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 5 35) no Hoare annotation was computed. [2019-11-06 22:26:23,904 INFO L443 ceAbstractionStarter]: For program point L8-2(lines 8 11) no Hoare annotation was computed. [2019-11-06 22:26:23,904 INFO L439 ceAbstractionStarter]: At program point L8-3(lines 8 11) the Hoare annotation is: false [2019-11-06 22:26:23,905 INFO L443 ceAbstractionStarter]: For program point L8-4(lines 8 11) no Hoare annotation was computed. [2019-11-06 22:26:23,905 INFO L443 ceAbstractionStarter]: For program point L29-2(lines 29 33) no Hoare annotation was computed. [2019-11-06 22:26:23,905 INFO L439 ceAbstractionStarter]: At program point L29-3(lines 29 33) the Hoare annotation is: false [2019-11-06 22:26:23,905 INFO L443 ceAbstractionStarter]: For program point L29-4(lines 29 33) no Hoare annotation was computed. [2019-11-06 22:26:23,905 INFO L439 ceAbstractionStarter]: At program point L17-2(lines 17 25) the Hoare annotation is: false [2019-11-06 22:26:23,905 INFO L439 ceAbstractionStarter]: At program point L17-3(lines 14 26) the Hoare annotation is: false [2019-11-06 22:26:23,906 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 5 35) no Hoare annotation was computed. [2019-11-06 22:26:23,906 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 5 35) the Hoare annotation is: true [2019-11-06 22:26:23,906 INFO L443 ceAbstractionStarter]: For program point L30-2(lines 30 32) no Hoare annotation was computed. [2019-11-06 22:26:23,906 INFO L439 ceAbstractionStarter]: At program point L30-3(lines 30 32) the Hoare annotation is: false [2019-11-06 22:26:23,906 INFO L443 ceAbstractionStarter]: For program point L18(lines 18 23) no Hoare annotation was computed. [2019-11-06 22:26:23,907 INFO L443 ceAbstractionStarter]: For program point L18-2(lines 18 23) no Hoare annotation was computed. [2019-11-06 22:26:23,907 INFO L443 ceAbstractionStarter]: For program point L14-2(lines 14 26) no Hoare annotation was computed. [2019-11-06 22:26:23,907 INFO L443 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-11-06 22:26:23,907 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-11-06 22:26:23,907 INFO L443 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-11-06 22:26:23,908 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2019-11-06 22:26:23,908 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2019-11-06 22:26:23,908 INFO L443 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-11-06 22:26:23,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:26:23 BoogieIcfgContainer [2019-11-06 22:26:23,917 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-06 22:26:23,920 INFO L168 Benchmark]: Toolchain (without parser) took 2069.84 ms. Allocated memory was 135.8 MB in the beginning and 199.2 MB in the end (delta: 63.4 MB). Free memory was 101.1 MB in the beginning and 89.1 MB in the end (delta: 12.0 MB). Peak memory consumption was 75.5 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:23,921 INFO L168 Benchmark]: CDTParser took 1.11 ms. Allocated memory is still 135.8 MB. Free memory was 119.0 MB in the beginning and 118.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-06 22:26:23,922 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.18 ms. Allocated memory was 135.8 MB in the beginning and 199.2 MB in the end (delta: 63.4 MB). Free memory was 100.9 MB in the beginning and 178.4 MB in the end (delta: -77.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:23,923 INFO L168 Benchmark]: Boogie Preprocessor took 37.47 ms. Allocated memory is still 199.2 MB. Free memory was 178.4 MB in the beginning and 176.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:23,924 INFO L168 Benchmark]: RCFGBuilder took 356.45 ms. Allocated memory is still 199.2 MB. Free memory was 176.6 MB in the beginning and 160.3 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:23,925 INFO L168 Benchmark]: TraceAbstraction took 1312.17 ms. Allocated memory is still 199.2 MB. Free memory was 159.6 MB in the beginning and 89.1 MB in the end (delta: 70.5 MB). Peak memory consumption was 70.5 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:23,929 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.11 ms. Allocated memory is still 135.8 MB. Free memory was 119.0 MB in the beginning and 118.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 357.18 ms. Allocated memory was 135.8 MB in the beginning and 199.2 MB in the end (delta: 63.4 MB). Free memory was 100.9 MB in the beginning and 178.4 MB in the end (delta: -77.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 37.47 ms. Allocated memory is still 199.2 MB. Free memory was 178.4 MB in the beginning and 176.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 356.45 ms. Allocated memory is still 199.2 MB. Free memory was 176.6 MB in the beginning and 160.3 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1312.17 ms. Allocated memory is still 199.2 MB. Free memory was 159.6 MB in the beginning and 89.1 MB in the end (delta: 70.5 MB). Peak memory consumption was 70.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 31 locations, 1 error locations. Result: SAFE, OverallTime: 1.2s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 132 SDtfs, 8 SDslu, 80 SDs, 0 SdLazy, 15 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=4, 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, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 15 PreInvPairs, 15 NumberOfFragments, 11 HoareAnnotationTreeSize, 15 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 3050 SizeOfPredicates, 1 NumberOfNonLiveVariables, 81 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 9/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 96, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9659090909090909, AVG_VARS_REMOVED_DURING_WEAKENING: 0.7727272727272727, AVG_WEAKENED_CONJUNCTS: 0.2727272727272727, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...