/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-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/ThreadIdListTest-Safe.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 22:20:11,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 22:20:11,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 22:20:11,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-24 22:20:11,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 22:20:11,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 22:20:11,429 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 22:20:11,433 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-PN-SemanticLbe.epf [2021-03-24 22:20:11,466 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 22:20:11,466 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 22:20:11,470 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 22:20:11,470 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 22:20:11,470 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 22:20:11,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 22:20:11,470 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 22:20:11,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 22:20:11,471 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 22:20:11,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 22:20:11,472 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 22:20:11,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 22:20:11,472 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 22:20:11,472 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 22:20:11,472 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 22:20:11,472 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 22:20:11,473 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 22:20:11,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 22:20:11,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 22:20:11,473 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 22:20:11,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 22:20:11,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 22:20:11,474 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 22:20:11,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 22:20:11,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 22:20:11,474 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 22:20:11,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 22:20:11,475 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 22:20:11,475 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 22:20:11,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 22:20:11,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 22:20:11,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 22:20:11,810 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-24 22:20:11,811 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-24 22:20:11,812 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/ThreadIdListTest-Safe.bpl [2021-03-24 22:20:11,812 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/ThreadIdListTest-Safe.bpl' [2021-03-24 22:20:11,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 22:20:11,835 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-24 22:20:11,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 22:20:11,836 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 22:20:11,836 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 22:20:11,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ThreadIdListTest-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:20:11" (1/1) ... [2021-03-24 22:20:11,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ThreadIdListTest-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:20:11" (1/1) ... [2021-03-24 22:20:11,860 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 22:20:11,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 22:20:11,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 22:20:11,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 22:20:11,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ThreadIdListTest-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:20:11" (1/1) ... [2021-03-24 22:20:11,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ThreadIdListTest-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:20:11" (1/1) ... [2021-03-24 22:20:11,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ThreadIdListTest-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:20:11" (1/1) ... [2021-03-24 22:20:11,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ThreadIdListTest-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:20:11" (1/1) ... [2021-03-24 22:20:11,872 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ThreadIdListTest-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:20:11" (1/1) ... [2021-03-24 22:20:11,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ThreadIdListTest-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:20:11" (1/1) ... [2021-03-24 22:20:11,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ThreadIdListTest-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:20:11" (1/1) ... [2021-03-24 22:20:11,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 22:20:11,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 22:20:11,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 22:20:11,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 22:20:11,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ThreadIdListTest-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:20:11" (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 [2021-03-24 22:20:11,940 INFO L130 BoogieDeclarations]: Found specification of procedure decrement [2021-03-24 22:20:11,940 INFO L138 BoogieDeclarations]: Found implementation of procedure decrement [2021-03-24 22:20:11,941 INFO L130 BoogieDeclarations]: Found specification of procedure increment [2021-03-24 22:20:11,941 INFO L138 BoogieDeclarations]: Found implementation of procedure increment [2021-03-24 22:20:11,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 22:20:11,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 22:20:11,942 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 22:20:12,064 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 22:20:12,065 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-24 22:20:12,066 INFO L202 PluginConnector]: Adding new model ThreadIdListTest-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 10:20:12 BoogieIcfgContainer [2021-03-24 22:20:12,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 22:20:12,069 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 22:20:12,069 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 22:20:12,071 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 22:20:12,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ThreadIdListTest-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:20:11" (1/2) ... [2021-03-24 22:20:12,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c86c2b and model type ThreadIdListTest-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 10:20:12, skipping insertion in model container [2021-03-24 22:20:12,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ThreadIdListTest-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 10:20:12" (2/2) ... [2021-03-24 22:20:12,074 INFO L111 eAbstractionObserver]: Analyzing ICFG ThreadIdListTest-Safe.bpl [2021-03-24 22:20:12,081 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 22:20:12,085 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 22:20:12,086 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 22:20:12,138 WARN L313 ript$VariableManager]: TermVariabe decrementThread1of1ForFork1_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:20:12,138 WARN L313 ript$VariableManager]: TermVariabe decrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:20:12,139 WARN L313 ript$VariableManager]: TermVariabe decrementThread1of1ForFork1_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:20:12,139 WARN L313 ript$VariableManager]: TermVariabe decrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:20:12,140 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:20:12,140 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:20:12,142 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:20:12,142 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:20:12,145 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:20:12,153 WARN L313 ript$VariableManager]: TermVariabe decrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:20:12,163 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-03-24 22:20:12,179 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-24 22:20:12,208 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 22:20:12,208 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 22:20:12,208 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 22:20:12,208 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 22:20:12,209 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 22:20:12,209 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 22:20:12,209 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 22:20:12,209 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 22:20:12,219 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 13 transitions, 39 flow [2021-03-24 22:20:12,240 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-03-24 22:20:12,241 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-24 22:20:12,242 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19 conditions, 11 events. 0/11 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-24 22:20:12,243 INFO L82 GeneralOperation]: Start removeDead. Operand has 20 places, 13 transitions, 39 flow [2021-03-24 22:20:12,245 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 16 places, 9 transitions, 27 flow [2021-03-24 22:20:12,247 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 22:20:12,260 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 16 places, 9 transitions, 27 flow [2021-03-24 22:20:12,267 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 16 places, 9 transitions, 27 flow [2021-03-24 22:20:12,268 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 16 places, 9 transitions, 27 flow [2021-03-24 22:20:12,276 INFO L129 PetriNetUnfolder]: 0/9 cut-off events. [2021-03-24 22:20:12,276 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-24 22:20:12,276 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17 conditions, 9 events. 0/9 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/9 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-24 22:20:12,280 INFO L142 LiptonReduction]: Number of co-enabled transitions 20 [2021-03-24 22:20:12,322 INFO L154 LiptonReduction]: Checked pairs total: 7 [2021-03-24 22:20:12,322 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-24 22:20:12,324 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 78 [2021-03-24 22:20:12,332 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-03-24 22:20:12,332 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-24 22:20:12,332 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:20:12,333 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-24 22:20:12,333 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 22:20:12,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:20:12,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1428659103, now seen corresponding path program 1 times [2021-03-24 22:20:12,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:20:12,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076362113] [2021-03-24 22:20:12,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:20:12,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:20:12,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:20:12,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:20:12,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:20:12,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:20:12,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:20:12,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:20:12,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:20:12,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076362113] [2021-03-24 22:20:12,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:20:12,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 22:20:12,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791279478] [2021-03-24 22:20:12,508 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 22:20:12,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:20:12,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 22:20:12,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 22:20:12,523 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 15 [2021-03-24 22:20:12,524 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 7 transitions, 23 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2021-03-24 22:20:12,525 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:20:12,525 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 15 [2021-03-24 22:20:12,526 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:20:12,532 INFO L129 PetriNetUnfolder]: 0/5 cut-off events. [2021-03-24 22:20:12,532 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-24 22:20:12,533 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14 conditions, 5 events. 0/5 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 1/6 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-03-24 22:20:12,533 INFO L132 encePairwiseOnDemand]: 13/15 looper letters, 0 selfloop transitions, 0 changer transitions 5/5 dead transitions. [2021-03-24 22:20:12,533 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 5 transitions, 18 flow [2021-03-24 22:20:12,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 22:20:12,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 22:20:12,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 38 transitions. [2021-03-24 22:20:12,544 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8444444444444444 [2021-03-24 22:20:12,545 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 38 transitions. [2021-03-24 22:20:12,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 38 transitions. [2021-03-24 22:20:12,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:20:12,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 38 transitions. [2021-03-24 22:20:12,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2021-03-24 22:20:12,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2021-03-24 22:20:12,562 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2021-03-24 22:20:12,564 INFO L185 Difference]: Start difference. First operand has 14 places, 7 transitions, 23 flow. Second operand 3 states and 38 transitions. [2021-03-24 22:20:12,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 5 transitions, 18 flow [2021-03-24 22:20:12,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 5 transitions, 16 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 22:20:12,567 INFO L241 Difference]: Finished difference. Result has 12 places, 0 transitions, 0 flow [2021-03-24 22:20:12,568 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=15, PETRI_DIFFERENCE_MINUEND_FLOW=14, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=12, PETRI_TRANSITIONS=0} [2021-03-24 22:20:12,569 INFO L343 CegarLoopForPetriNet]: 14 programPoint places, -2 predicate places. [2021-03-24 22:20:12,569 INFO L480 AbstractCegarLoop]: Abstraction has has 12 places, 0 transitions, 0 flow [2021-03-24 22:20:12,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2021-03-24 22:20:12,569 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 22:20:12,572 INFO L202 PluginConnector]: Adding new model ThreadIdListTest-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 10:20:12 BasicIcfg [2021-03-24 22:20:12,572 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 22:20:12,573 INFO L168 Benchmark]: Toolchain (without parser) took 738.37 ms. Allocated memory is still 255.9 MB. Free memory was 236.6 MB in the beginning and 218.7 MB in the end (delta: 18.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.0 GB. [2021-03-24 22:20:12,574 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.5 MB in the end (delta: 92.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 22:20:12,574 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.06 ms. Allocated memory is still 255.9 MB. Free memory was 236.5 MB in the beginning and 235.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 22:20:12,575 INFO L168 Benchmark]: Boogie Preprocessor took 14.08 ms. Allocated memory is still 255.9 MB. Free memory was 235.1 MB in the beginning and 234.2 MB in the end (delta: 875.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 22:20:12,577 INFO L168 Benchmark]: RCFGBuilder took 190.73 ms. Allocated memory is still 255.9 MB. Free memory was 234.2 MB in the beginning and 226.1 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-03-24 22:20:12,578 INFO L168 Benchmark]: TraceAbstraction took 503.56 ms. Allocated memory is still 255.9 MB. Free memory was 225.6 MB in the beginning and 218.7 MB in the end (delta: 7.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.0 GB. [2021-03-24 22:20:12,586 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 0.11 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.5 MB in the end (delta: 92.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 24.06 ms. Allocated memory is still 255.9 MB. Free memory was 236.5 MB in the beginning and 235.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.08 ms. Allocated memory is still 255.9 MB. Free memory was 235.1 MB in the beginning and 234.2 MB in the end (delta: 875.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 190.73 ms. Allocated memory is still 255.9 MB. Free memory was 234.2 MB in the beginning and 226.1 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 503.56 ms. Allocated memory is still 255.9 MB. Free memory was 225.6 MB in the beginning and 218.7 MB in the end (delta: 7.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 55.0ms, 16 PlacesBefore, 14 PlacesAfterwards, 9 TransitionsBefore, 7 TransitionsAfterwards, 20 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 7 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 7, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 7, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 7, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 7, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 7, unknown conditional: 0, unknown unconditional: 7] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 22]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 365.2ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 50.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 120.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 3.2ms SsaConstructionTime, 13.6ms SatisfiabilityAnalysisTime, 60.1ms InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...