/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/join_multiple_return_values.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9b7772ad7705253c1305067fc38dc9bc7271fbe3-9b7772a [2021-04-15 01:36:43,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-15 01:36:43,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-15 01:36:43,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-15 01:36:43,972 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-15 01:36:43,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-15 01:36:43,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-15 01:36:43,976 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-04-15 01:36:44,001 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-15 01:36:44,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-15 01:36:44,002 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-04-15 01:36:44,002 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-04-15 01:36:44,004 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-15 01:36:44,004 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-15 01:36:44,004 INFO L138 SettingsManager]: * Use SBE=true [2021-04-15 01:36:44,004 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-15 01:36:44,004 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-15 01:36:44,005 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-15 01:36:44,005 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-15 01:36:44,005 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-15 01:36:44,005 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-15 01:36:44,005 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-15 01:36:44,005 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-15 01:36:44,006 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-15 01:36:44,006 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-15 01:36:44,006 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-15 01:36:44,006 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-15 01:36:44,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-15 01:36:44,006 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-15 01:36:44,006 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-15 01:36:44,006 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-15 01:36:44,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-15 01:36:44,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-15 01:36:44,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-15 01:36:44,007 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-15 01:36:44,007 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-15 01:36:44,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-15 01:36:44,007 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-04-15 01:36:44,007 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-15 01:36:44,007 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-15 01:36:44,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-15 01:36:44,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-15 01:36:44,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-15 01:36:44,257 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-04-15 01:36:44,260 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-04-15 01:36:44,261 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/join_multiple_return_values.bpl [2021-04-15 01:36:44,261 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/join_multiple_return_values.bpl' [2021-04-15 01:36:44,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-15 01:36:44,300 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-15 01:36:44,301 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-15 01:36:44,301 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-15 01:36:44,301 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-15 01:36:44,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "join_multiple_return_values.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 01:36:44" (1/1) ... [2021-04-15 01:36:44,317 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "join_multiple_return_values.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 01:36:44" (1/1) ... [2021-04-15 01:36:44,321 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-15 01:36:44,322 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-15 01:36:44,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-15 01:36:44,322 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-15 01:36:44,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "join_multiple_return_values.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 01:36:44" (1/1) ... [2021-04-15 01:36:44,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "join_multiple_return_values.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 01:36:44" (1/1) ... [2021-04-15 01:36:44,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "join_multiple_return_values.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 01:36:44" (1/1) ... [2021-04-15 01:36:44,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "join_multiple_return_values.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 01:36:44" (1/1) ... [2021-04-15 01:36:44,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "join_multiple_return_values.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 01:36:44" (1/1) ... [2021-04-15 01:36:44,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "join_multiple_return_values.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 01:36:44" (1/1) ... [2021-04-15 01:36:44,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "join_multiple_return_values.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 01:36:44" (1/1) ... [2021-04-15 01:36:44,331 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-15 01:36:44,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-15 01:36:44,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-15 01:36:44,332 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-15 01:36:44,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "join_multiple_return_values.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 01:36:44" (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 [2021-04-15 01:36:44,375 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-04-15 01:36:44,375 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-04-15 01:36:44,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-15 01:36:44,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-15 01:36:44,376 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-15 01:36:44,460 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-15 01:36:44,460 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-04-15 01:36:44,461 INFO L202 PluginConnector]: Adding new model join_multiple_return_values.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 01:36:44 BoogieIcfgContainer [2021-04-15 01:36:44,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-15 01:36:44,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-15 01:36:44,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-15 01:36:44,481 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-15 01:36:44,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "join_multiple_return_values.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.04 01:36:44" (1/2) ... [2021-04-15 01:36:44,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@474a88af and model type join_multiple_return_values.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 01:36:44, skipping insertion in model container [2021-04-15 01:36:44,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "join_multiple_return_values.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 01:36:44" (2/2) ... [2021-04-15 01:36:44,483 INFO L111 eAbstractionObserver]: Analyzing ICFG join_multiple_return_values.bpl [2021-04-15 01:36:44,486 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-04-15 01:36:44,487 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-15 01:36:44,489 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-15 01:36:44,489 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-15 01:36:44,501 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_num not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:36:44,501 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_num not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:36:44,502 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_num not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:36:44,502 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_num not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:36:44,502 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_num not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:36:44,502 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_ret not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:36:44,502 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_num not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:36:44,502 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_ret not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:36:44,502 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_ret not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:36:44,503 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_ret not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:36:44,503 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_ret_bool not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:36:44,503 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_ret_bool not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:36:44,503 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_ret_bool not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:36:44,503 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_ret_bool not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:36:44,504 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_ret_bool not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:36:44,505 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_ret not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:36:44,509 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-04-15 01:36:44,519 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-04-15 01:36:44,531 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-15 01:36:44,532 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-15 01:36:44,532 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-15 01:36:44,532 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-15 01:36:44,532 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-15 01:36:44,532 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-15 01:36:44,532 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-15 01:36:44,532 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-15 01:36:44,537 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 18 places, 15 transitions, 38 flow [2021-04-15 01:36:44,543 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 20 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:36:44,545 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:36:44,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-04-15 01:36:44,548 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:36:44,548 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 01:36:44,549 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 01:36:44,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:36:44,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1431888522, now seen corresponding path program 1 times [2021-04-15 01:36:44,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:36:44,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372832230] [2021-04-15 01:36:44,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:36:44,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:36:44,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:36:44,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372832230] [2021-04-15 01:36:44,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:36:44,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-15 01:36:44,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390270145] [2021-04-15 01:36:44,745 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 01:36:44,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:36:44,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 01:36:44,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-04-15 01:36:44,755 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:36:44,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:36:44,895 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2021-04-15 01:36:44,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-15 01:36:44,897 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-04-15 01:36:44,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:36:44,900 INFO L225 Difference]: With dead ends: 15 [2021-04-15 01:36:44,900 INFO L226 Difference]: Without dead ends: 0 [2021-04-15 01:36:44,903 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 162.8ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-04-15 01:36:44,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-04-15 01:36:44,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-04-15 01:36:44,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:36:44,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-04-15 01:36:44,919 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2021-04-15 01:36:44,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:36:44,920 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-04-15 01:36:44,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:36:44,920 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-04-15 01:36:44,920 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-04-15 01:36:44,921 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-15 01:36:44,924 INFO L202 PluginConnector]: Adding new model join_multiple_return_values.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.04 01:36:44 BasicIcfg [2021-04-15 01:36:44,924 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-15 01:36:44,926 INFO L168 Benchmark]: Toolchain (without parser) took 624.52 ms. Allocated memory is still 255.9 MB. Free memory was 236.9 MB in the beginning and 198.7 MB in the end (delta: 38.2 MB). Peak memory consumption was 38.8 MB. Max. memory is 16.0 GB. [2021-04-15 01:36:44,927 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 255.9 MB. Free memory was 237.9 MB in the beginning and 237.8 MB in the end (delta: 99.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-15 01:36:44,927 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.46 ms. Allocated memory is still 255.9 MB. Free memory was 236.8 MB in the beginning and 235.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-15 01:36:44,928 INFO L168 Benchmark]: Boogie Preprocessor took 8.81 ms. Allocated memory is still 255.9 MB. Free memory was 235.4 MB in the beginning and 234.4 MB in the end (delta: 903.5 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-15 01:36:44,929 INFO L168 Benchmark]: RCFGBuilder took 129.91 ms. Allocated memory is still 255.9 MB. Free memory was 234.4 MB in the beginning and 225.8 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-04-15 01:36:44,929 INFO L168 Benchmark]: TraceAbstraction took 461.82 ms. Allocated memory is still 255.9 MB. Free memory was 225.4 MB in the beginning and 198.7 MB in the end (delta: 26.7 MB). Peak memory consumption was 28.3 MB. Max. memory is 16.0 GB. [2021-04-15 01:36:44,936 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 255.9 MB. Free memory was 237.9 MB in the beginning and 237.8 MB in the end (delta: 99.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 20.46 ms. Allocated memory is still 255.9 MB. Free memory was 236.8 MB in the beginning and 235.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 8.81 ms. Allocated memory is still 255.9 MB. Free memory was 235.4 MB in the beginning and 234.4 MB in the end (delta: 903.5 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 129.91 ms. Allocated memory is still 255.9 MB. Free memory was 234.4 MB in the beginning and 225.8 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 461.82 ms. Allocated memory is still 255.9 MB. Free memory was 225.4 MB in the beginning and 198.7 MB in the end (delta: 26.7 MB). Peak memory consumption was 28.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 23]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 391.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 4.8ms, AutomataDifference: 155.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 7 SDtfs, 28 SDslu, 8 SDs, 0 SdLazy, 20 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 24.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 162.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 5.8ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2.4ms SsaConstructionTime, 12.2ms SatisfiabilityAnalysisTime, 120.9ms InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 62 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...