/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/reducercommutativity/max40-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 01:04:09,552 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 01:04:09,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 01:04:09,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 01:04:09,574 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 01:04:09,576 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 01:04:09,578 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 01:04:09,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 01:04:09,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 01:04:09,592 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 01:04:09,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 01:04:09,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 01:04:09,595 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 01:04:09,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 01:04:09,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 01:04:09,598 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 01:04:09,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 01:04:09,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 01:04:09,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 01:04:09,603 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 01:04:09,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 01:04:09,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 01:04:09,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 01:04:09,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 01:04:09,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 01:04:09,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 01:04:09,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 01:04:09,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 01:04:09,618 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 [2019-11-07 01:04:09,632 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 01:04:09,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 01:04:09,634 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 01:04:09,634 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 01:04:09,634 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 01:04:09,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 01:04:09,635 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 01:04:09,635 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 01:04:09,635 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 01:04:09,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 01:04:09,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 01:04:09,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 01:04:09,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 01:04:09,636 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 01:04:09,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 01:04:09,636 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 01:04:09,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 01:04:09,637 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 01:04:09,637 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 01:04:09,637 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 01:04:09,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 01:04:09,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 01:04:09,638 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 01:04:09,638 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 01:04:09,638 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 01:04:09,638 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 01:04:09,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 01:04:09,639 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 01:04:09,639 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 [2019-11-07 01:04:09,917 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 01:04:09,930 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 01:04:09,933 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 01:04:09,935 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 01:04:09,935 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 01:04:09,936 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/max40-1.i [2019-11-07 01:04:10,002 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c5f9d433/1c3242dd27a441c09a866003f0c3ccb6/FLAG314a8ae71 [2019-11-07 01:04:10,448 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 01:04:10,449 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/max40-1.i [2019-11-07 01:04:10,454 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c5f9d433/1c3242dd27a441c09a866003f0c3ccb6/FLAG314a8ae71 [2019-11-07 01:04:10,838 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c5f9d433/1c3242dd27a441c09a866003f0c3ccb6 [2019-11-07 01:04:10,848 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 01:04:10,850 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 01:04:10,851 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 01:04:10,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 01:04:10,855 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 01:04:10,856 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:04:10" (1/1) ... [2019-11-07 01:04:10,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56d482f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:10, skipping insertion in model container [2019-11-07 01:04:10,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:04:10" (1/1) ... [2019-11-07 01:04:10,866 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 01:04:10,885 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 01:04:11,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:04:11,134 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 01:04:11,157 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:04:11,265 INFO L192 MainTranslator]: Completed translation [2019-11-07 01:04:11,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:11 WrapperNode [2019-11-07 01:04:11,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 01:04:11,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 01:04:11,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 01:04:11,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 01:04:11,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:11" (1/1) ... [2019-11-07 01:04:11,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:11" (1/1) ... [2019-11-07 01:04:11,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:11" (1/1) ... [2019-11-07 01:04:11,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:11" (1/1) ... [2019-11-07 01:04:11,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:11" (1/1) ... [2019-11-07 01:04:11,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:11" (1/1) ... [2019-11-07 01:04:11,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:11" (1/1) ... [2019-11-07 01:04:11,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 01:04:11,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 01:04:11,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 01:04:11,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 01:04:11,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:11" (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 [2019-11-07 01:04:11,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 01:04:11,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 01:04:11,369 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2019-11-07 01:04:11,369 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 01:04:11,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 01:04:11,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 01:04:11,369 INFO L130 BoogieDeclarations]: Found specification of procedure max [2019-11-07 01:04:11,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 01:04:11,369 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 01:04:11,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 01:04:11,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 01:04:11,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 01:04:11,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 01:04:11,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 01:04:11,701 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 01:04:11,701 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-07 01:04:11,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:04:11 BoogieIcfgContainer [2019-11-07 01:04:11,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 01:04:11,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 01:04:11,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 01:04:11,707 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 01:04:11,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:04:10" (1/3) ... [2019-11-07 01:04:11,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c71d186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:04:11, skipping insertion in model container [2019-11-07 01:04:11,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:04:11" (2/3) ... [2019-11-07 01:04:11,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c71d186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:04:11, skipping insertion in model container [2019-11-07 01:04:11,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:04:11" (3/3) ... [2019-11-07 01:04:11,711 INFO L109 eAbstractionObserver]: Analyzing ICFG max40-1.i [2019-11-07 01:04:11,720 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 01:04:11,728 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 01:04:11,739 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 01:04:11,764 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 01:04:11,765 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 01:04:11,765 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 01:04:11,765 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 01:04:11,765 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 01:04:11,765 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 01:04:11,765 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 01:04:11,766 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 01:04:11,782 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-11-07 01:04:11,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-07 01:04:11,789 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:04:11,790 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:04:11,792 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:04:11,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:04:11,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1379671032, now seen corresponding path program 1 times [2019-11-07 01:04:11,805 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:04:11,805 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691578141] [2019-11-07 01:04:11,805 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:04:11,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:04:11,981 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-07 01:04:11,982 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691578141] [2019-11-07 01:04:11,982 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:04:11,983 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 01:04:11,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097280984] [2019-11-07 01:04:11,989 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:04:11,991 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:04:12,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:04:12,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:04:12,009 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2019-11-07 01:04:12,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:04:12,073 INFO L93 Difference]: Finished difference Result 60 states and 81 transitions. [2019-11-07 01:04:12,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:04:12,079 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2019-11-07 01:04:12,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:04:12,090 INFO L225 Difference]: With dead ends: 60 [2019-11-07 01:04:12,091 INFO L226 Difference]: Without dead ends: 30 [2019-11-07 01:04:12,097 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 [2019-11-07 01:04:12,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-07 01:04:12,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2019-11-07 01:04:12,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-07 01:04:12,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2019-11-07 01:04:12,139 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 32 [2019-11-07 01:04:12,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:04:12,140 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2019-11-07 01:04:12,141 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:04:12,141 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2019-11-07 01:04:12,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-07 01:04:12,147 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:04:12,148 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:04:12,148 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:04:12,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:04:12,149 INFO L82 PathProgramCache]: Analyzing trace with hash 551744077, now seen corresponding path program 1 times [2019-11-07 01:04:12,150 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:04:12,150 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432048281] [2019-11-07 01:04:12,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:04:12,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:04:12,251 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-07 01:04:12,252 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432048281] [2019-11-07 01:04:12,252 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020898391] [2019-11-07 01:04:12,253 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 [2019-11-07 01:04:12,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:04:12,333 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-07 01:04:12,341 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 01:04:12,384 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 01:04:12,385 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 01:04:12,426 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-07 01:04:12,426 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 01:04:12,427 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2019-11-07 01:04:12,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911551109] [2019-11-07 01:04:12,429 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:04:12,429 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:04:12,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:04:12,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-07 01:04:12,430 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 3 states. [2019-11-07 01:04:12,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:04:12,454 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2019-11-07 01:04:12,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:04:12,456 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2019-11-07 01:04:12,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:04:12,457 INFO L225 Difference]: With dead ends: 52 [2019-11-07 01:04:12,457 INFO L226 Difference]: Without dead ends: 33 [2019-11-07 01:04:12,458 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-07 01:04:12,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-07 01:04:12,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2019-11-07 01:04:12,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-07 01:04:12,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-11-07 01:04:12,476 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 34 [2019-11-07 01:04:12,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:04:12,477 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-11-07 01:04:12,477 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:04:12,477 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-11-07 01:04:12,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-07 01:04:12,479 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:04:12,480 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:04:12,684 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 01:04:12,685 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:04:12,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:04:12,686 INFO L82 PathProgramCache]: Analyzing trace with hash 727331048, now seen corresponding path program 1 times [2019-11-07 01:04:12,686 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:04:12,687 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712223598] [2019-11-07 01:04:12,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:04:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:04:12,787 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 01:04:12,788 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712223598] [2019-11-07 01:04:12,788 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:04:12,788 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 01:04:12,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621582796] [2019-11-07 01:04:12,789 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:04:12,790 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:04:12,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:04:12,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:04:12,790 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 3 states. [2019-11-07 01:04:12,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:04:12,814 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2019-11-07 01:04:12,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:04:12,816 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-11-07 01:04:12,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:04:12,817 INFO L225 Difference]: With dead ends: 47 [2019-11-07 01:04:12,817 INFO L226 Difference]: Without dead ends: 32 [2019-11-07 01:04:12,818 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 [2019-11-07 01:04:12,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-07 01:04:12,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2019-11-07 01:04:12,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-07 01:04:12,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2019-11-07 01:04:12,830 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 46 [2019-11-07 01:04:12,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:04:12,833 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2019-11-07 01:04:12,833 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:04:12,836 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2019-11-07 01:04:12,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-11-07 01:04:12,837 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:04:12,837 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:04:12,838 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:04:12,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:04:12,838 INFO L82 PathProgramCache]: Analyzing trace with hash -270429754, now seen corresponding path program 1 times [2019-11-07 01:04:12,838 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 01:04:12,841 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147855374] [2019-11-07 01:04:12,841 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:04:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:04:12,943 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 01:04:12,943 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147855374] [2019-11-07 01:04:12,944 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376022473] [2019-11-07 01:04:12,944 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 01:04:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:04:13,058 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 01:04:13,064 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 01:04:13,089 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 01:04:13,090 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 01:04:13,142 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 01:04:13,144 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [589533941] [2019-11-07 01:04:13,151 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 49 [2019-11-07 01:04:13,199 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-07 01:04:13,199 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-07 01:04:13,279 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-07 01:04:13,280 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 30 variables. [2019-11-07 01:04:13,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:04:13,283 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-07 01:04:13,334 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-11-07 01:04:13,334 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-07 01:04:13,337 INFO L553 sIntCurrentIteration]: We unified 47 AI predicates to 47 [2019-11-07 01:04:13,337 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-07 01:04:13,338 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-07 01:04:13,338 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 7 [2019-11-07 01:04:13,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210675635] [2019-11-07 01:04:13,339 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 01:04:13,339 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 01:04:13,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 01:04:13,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-07 01:04:13,342 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 2 states. [2019-11-07 01:04:13,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:04:13,344 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2019-11-07 01:04:13,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 01:04:13,345 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 48 [2019-11-07 01:04:13,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:04:13,345 INFO L225 Difference]: With dead ends: 31 [2019-11-07 01:04:13,345 INFO L226 Difference]: Without dead ends: 0 [2019-11-07 01:04:13,346 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-07 01:04:13,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-07 01:04:13,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-07 01:04:13,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-07 01:04:13,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-07 01:04:13,347 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2019-11-07 01:04:13,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:04:13,347 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-07 01:04:13,347 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 01:04:13,348 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-07 01:04:13,348 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-07 01:04:13,551 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 01:04:13,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-07 01:04:13,634 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-11-07 01:04:13,635 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-11-07 01:04:13,635 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-07 01:04:13,635 INFO L443 ceAbstractionStarter]: For program point maxEXIT(lines 4 13) no Hoare annotation was computed. [2019-11-07 01:04:13,635 INFO L446 ceAbstractionStarter]: At program point maxENTRY(lines 4 13) the Hoare annotation is: true [2019-11-07 01:04:13,636 INFO L443 ceAbstractionStarter]: For program point L10(line 10) no Hoare annotation was computed. [2019-11-07 01:04:13,638 INFO L443 ceAbstractionStarter]: For program point L10-2(line 10) no Hoare annotation was computed. [2019-11-07 01:04:13,638 INFO L443 ceAbstractionStarter]: For program point L9-2(lines 9 11) no Hoare annotation was computed. [2019-11-07 01:04:13,638 INFO L446 ceAbstractionStarter]: At program point L9-3(lines 9 11) the Hoare annotation is: true [2019-11-07 01:04:13,638 INFO L443 ceAbstractionStarter]: For program point L9-4(lines 9 11) no Hoare annotation was computed. [2019-11-07 01:04:13,638 INFO L443 ceAbstractionStarter]: For program point maxFINAL(lines 4 13) no Hoare annotation was computed. [2019-11-07 01:04:13,639 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-07 01:04:13,639 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-07 01:04:13,639 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-07 01:04:13,639 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-07 01:04:13,639 INFO L443 ceAbstractionStarter]: For program point L27(line 27) no Hoare annotation was computed. [2019-11-07 01:04:13,639 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 15 42) no Hoare annotation was computed. [2019-11-07 01:04:13,640 INFO L443 ceAbstractionStarter]: For program point L23-2(lines 23 25) no Hoare annotation was computed. [2019-11-07 01:04:13,642 INFO L439 ceAbstractionStarter]: At program point L23-3(lines 23 25) the Hoare annotation is: false [2019-11-07 01:04:13,642 INFO L439 ceAbstractionStarter]: At program point L23-4(lines 23 25) the Hoare annotation is: false [2019-11-07 01:04:13,642 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 15 42) no Hoare annotation was computed. [2019-11-07 01:04:13,642 INFO L443 ceAbstractionStarter]: For program point L38(lines 38 40) no Hoare annotation was computed. [2019-11-07 01:04:13,643 INFO L439 ceAbstractionStarter]: At program point L36(line 36) the Hoare annotation is: false [2019-11-07 01:04:13,646 INFO L443 ceAbstractionStarter]: For program point L38-2(lines 38 40) no Hoare annotation was computed. [2019-11-07 01:04:13,646 INFO L443 ceAbstractionStarter]: For program point L36-1(line 36) no Hoare annotation was computed. [2019-11-07 01:04:13,646 INFO L439 ceAbstractionStarter]: At program point L30(line 30) the Hoare annotation is: false [2019-11-07 01:04:13,646 INFO L443 ceAbstractionStarter]: For program point L32-2(lines 32 34) no Hoare annotation was computed. [2019-11-07 01:04:13,647 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 15 42) the Hoare annotation is: true [2019-11-07 01:04:13,647 INFO L443 ceAbstractionStarter]: For program point L30-1(line 30) no Hoare annotation was computed. [2019-11-07 01:04:13,648 INFO L439 ceAbstractionStarter]: At program point L32-3(lines 32 34) the Hoare annotation is: false [2019-11-07 01:04:13,648 INFO L443 ceAbstractionStarter]: For program point L32-4(lines 32 34) no Hoare annotation was computed. [2019-11-07 01:04:13,648 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2019-11-07 01:04:13,649 INFO L443 ceAbstractionStarter]: For program point L39(line 39) no Hoare annotation was computed. [2019-11-07 01:04:13,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:04:13 BoogieIcfgContainer [2019-11-07 01:04:13,671 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 01:04:13,681 INFO L168 Benchmark]: Toolchain (without parser) took 2823.45 ms. Allocated memory was 137.4 MB in the beginning and 231.7 MB in the end (delta: 94.4 MB). Free memory was 101.1 MB in the beginning and 167.5 MB in the end (delta: -66.4 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. [2019-11-07 01:04:13,688 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 137.4 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-07 01:04:13,690 INFO L168 Benchmark]: CACSL2BoogieTranslator took 415.16 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 100.9 MB in the beginning and 181.0 MB in the end (delta: -80.1 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2019-11-07 01:04:13,699 INFO L168 Benchmark]: Boogie Preprocessor took 41.92 ms. Allocated memory is still 201.9 MB. Free memory was 181.0 MB in the beginning and 178.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2019-11-07 01:04:13,700 INFO L168 Benchmark]: RCFGBuilder took 394.18 ms. Allocated memory is still 201.9 MB. Free memory was 178.5 MB in the beginning and 161.9 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. [2019-11-07 01:04:13,701 INFO L168 Benchmark]: TraceAbstraction took 1967.55 ms. Allocated memory was 201.9 MB in the beginning and 231.7 MB in the end (delta: 29.9 MB). Free memory was 161.2 MB in the beginning and 167.5 MB in the end (delta: -6.3 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2019-11-07 01:04:13,712 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 137.4 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 415.16 ms. Allocated memory was 137.4 MB in the beginning and 201.9 MB in the end (delta: 64.5 MB). Free memory was 100.9 MB in the beginning and 181.0 MB in the end (delta: -80.1 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 41.92 ms. Allocated memory is still 201.9 MB. Free memory was 181.0 MB in the beginning and 178.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 394.18 ms. Allocated memory is still 201.9 MB. Free memory was 178.5 MB in the beginning and 161.9 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1967.55 ms. Allocated memory was 201.9 MB in the beginning and 231.7 MB in the end (delta: 29.9 MB). Free memory was 161.2 MB in the beginning and 167.5 MB in the end (delta: -6.3 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: 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: 32]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 33 locations, 1 error locations. Result: SAFE, OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 102 SDtfs, 6 SDslu, 91 SDs, 0 SdLazy, 17 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 175 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 27 PreInvPairs, 27 NumberOfFragments, 11 HoareAnnotationTreeSize, 27 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 242 NumberOfCodeBlocks, 242 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 316 ConstructedInterpolants, 0 QuantifiedInterpolants, 14076 SizeOfPredicates, 2 NumberOfNonLiveVariables, 294 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 195/214 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 132, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9627659574468085, AVG_VARS_REMOVED_DURING_WEAKENING: 1.4042553191489362, AVG_WEAKENED_CONJUNCTS: 0.1276595744680851, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...