/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/fork_join_NotMod.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 14:16:11,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 14:16:11,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 14:16:11,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-11 14:16:11,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 14:16:11,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 14:16:11,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 14:16:11,585 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-SemanticLbe.epf [2021-03-11 14:16:11,604 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 14:16:11,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 14:16:11,606 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 14:16:11,606 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 14:16:11,606 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 14:16:11,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 14:16:11,607 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 14:16:11,607 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 14:16:11,607 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 14:16:11,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 14:16:11,608 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 14:16:11,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 14:16:11,608 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 14:16:11,608 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 14:16:11,609 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 14:16:11,609 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 14:16:11,609 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 14:16:11,609 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 14:16:11,609 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 14:16:11,610 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 14:16:11,610 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 14:16:11,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 14:16:11,610 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 14:16:11,610 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 14:16:11,611 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 14:16:11,611 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 14:16:11,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 14:16:11,611 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 14:16:11,611 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 14:16:11,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 14:16:11,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 14:16:11,914 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 14:16:11,915 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-11 14:16:11,919 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-11 14:16:11,920 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/fork_join_NotMod.bpl [2021-03-11 14:16:11,920 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/fork_join_NotMod.bpl' [2021-03-11 14:16:11,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 14:16:11,950 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-11 14:16:11,953 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 14:16:11,953 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 14:16:11,953 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 14:16:11,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "fork_join_NotMod.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:16:11" (1/1) ... [2021-03-11 14:16:11,969 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "fork_join_NotMod.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:16:11" (1/1) ... [2021-03-11 14:16:11,974 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 14:16:11,975 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 14:16:11,976 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 14:16:11,976 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 14:16:11,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "fork_join_NotMod.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:16:11" (1/1) ... [2021-03-11 14:16:11,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "fork_join_NotMod.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:16:11" (1/1) ... [2021-03-11 14:16:11,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "fork_join_NotMod.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:16:11" (1/1) ... [2021-03-11 14:16:11,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "fork_join_NotMod.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:16:11" (1/1) ... [2021-03-11 14:16:11,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "fork_join_NotMod.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:16:11" (1/1) ... [2021-03-11 14:16:11,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "fork_join_NotMod.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:16:11" (1/1) ... [2021-03-11 14:16:11,986 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "fork_join_NotMod.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:16:11" (1/1) ... [2021-03-11 14:16:11,987 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 14:16:11,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 14:16:11,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 14:16:11,987 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 14:16:11,988 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "fork_join_NotMod.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:16:11" (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 [2021-03-11 14:16:12,050 INFO L130 BoogieDeclarations]: Found specification of procedure increment [2021-03-11 14:16:12,051 INFO L138 BoogieDeclarations]: Found implementation of procedure increment [2021-03-11 14:16:12,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 14:16:12,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 14:16:12,055 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 14:16:12,221 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 14:16:12,221 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-11 14:16:12,223 INFO L202 PluginConnector]: Adding new model fork_join_NotMod.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:16:12 BoogieIcfgContainer [2021-03-11 14:16:12,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 14:16:12,224 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 14:16:12,224 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 14:16:12,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 14:16:12,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_join_NotMod.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 02:16:11" (1/2) ... [2021-03-11 14:16:12,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@535a4632 and model type fork_join_NotMod.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:16:12, skipping insertion in model container [2021-03-11 14:16:12,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_join_NotMod.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:16:12" (2/2) ... [2021-03-11 14:16:12,228 INFO L111 eAbstractionObserver]: Analyzing ICFG fork_join_NotMod.bpl [2021-03-11 14:16:12,233 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 14:16:12,233 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 14:16:12,236 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2021-03-11 14:16:12,236 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 14:16:12,250 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:16:12,251 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:16:12,251 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:16:12,251 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:16:12,253 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 14:16:12,258 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-03-11 14:16:12,271 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-11 14:16:12,287 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 14:16:12,287 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 14:16:12,287 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 14:16:12,287 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 14:16:12,287 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 14:16:12,287 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 14:16:12,288 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 14:16:12,288 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 14:16:12,297 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 14:16:12,306 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 20 places, 16 transitions, 40 flow [2021-03-11 14:16:12,308 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 20 places, 16 transitions, 40 flow [2021-03-11 14:16:12,309 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 16 transitions, 40 flow [2021-03-11 14:16:12,324 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-03-11 14:16:12,324 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-11 14:16:12,325 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20 conditions, 15 events. 0/15 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 0 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-11 14:16:12,326 INFO L116 LiptonReduction]: Number of co-enabled transitions 16 [2021-03-11 14:16:12,479 INFO L131 LiptonReduction]: Checked pairs total: 18 [2021-03-11 14:16:12,480 INFO L133 LiptonReduction]: Total number of compositions: 7 [2021-03-11 14:16:12,486 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 15 places, 11 transitions, 30 flow [2021-03-11 14:16:12,491 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 14 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 13 states have internal predecessors, (16), 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) [2021-03-11 14:16:12,493 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 13 states have internal predecessors, (16), 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) [2021-03-11 14:16:12,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-03-11 14:16:12,496 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:16:12,496 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-03-11 14:16:12,497 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2021-03-11 14:16:12,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:16:12,501 INFO L82 PathProgramCache]: Analyzing trace with hash 65432, now seen corresponding path program 1 times [2021-03-11 14:16:12,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:16:12,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470499364] [2021-03-11 14:16:12,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:16:12,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:16:12,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:16:12,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 14:16:12,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:16:12,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470499364] [2021-03-11 14:16:12,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:16:12,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 14:16:12,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093515563] [2021-03-11 14:16:12,598 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 14:16:12,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:16:12,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 14:16:12,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:16:12,610 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 13 states have internal predecessors, (16), 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 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-03-11 14:16:12,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:16:12,626 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2021-03-11 14:16:12,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 14:16:12,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2021-03-11 14:16:12,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:16:12,633 INFO L225 Difference]: With dead ends: 11 [2021-03-11 14:16:12,633 INFO L226 Difference]: Without dead ends: 10 [2021-03-11 14:16:12,634 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:16:12,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-03-11 14:16:12,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-03-11 14:16:12,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 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) [2021-03-11 14:16:12,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-03-11 14:16:12,655 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 3 [2021-03-11 14:16:12,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:16:12,655 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-03-11 14:16:12,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-03-11 14:16:12,655 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2021-03-11 14:16:12,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-03-11 14:16:12,656 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 14:16:12,656 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-03-11 14:16:12,656 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 14:16:12,656 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2021-03-11 14:16:12,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 14:16:12,657 INFO L82 PathProgramCache]: Analyzing trace with hash 65449, now seen corresponding path program 1 times [2021-03-11 14:16:12,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 14:16:12,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306267367] [2021-03-11 14:16:12,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 14:16:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 14:16:12,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 14:16:12,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 14:16:12,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 14:16:12,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306267367] [2021-03-11 14:16:12,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 14:16:12,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 14:16:12,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345406471] [2021-03-11 14:16:12,671 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 14:16:12,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 14:16:12,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 14:16:12,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:16:12,672 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-03-11 14:16:12,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 14:16:12,677 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2021-03-11 14:16:12,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 14:16:12,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2021-03-11 14:16:12,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 14:16:12,678 INFO L225 Difference]: With dead ends: 7 [2021-03-11 14:16:12,678 INFO L226 Difference]: Without dead ends: 0 [2021-03-11 14:16:12,678 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 14:16:12,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-11 14:16:12,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-11 14:16:12,679 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) [2021-03-11 14:16:12,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-11 14:16:12,679 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 3 [2021-03-11 14:16:12,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 14:16:12,679 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-11 14:16:12,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-03-11 14:16:12,679 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-11 14:16:12,679 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-11 14:16:12,680 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 14:16:12,682 INFO L202 PluginConnector]: Adding new model fork_join_NotMod.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 02:16:12 BasicIcfg [2021-03-11 14:16:12,682 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 14:16:12,683 INFO L168 Benchmark]: Toolchain (without parser) took 735.61 ms. Allocated memory is still 255.9 MB. Free memory was 236.5 MB in the beginning and 198.2 MB in the end (delta: 38.2 MB). Peak memory consumption was 38.6 MB. Max. memory is 16.0 GB. [2021-03-11 14:16:12,684 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 14:16:12,684 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.18 ms. Allocated memory is still 255.9 MB. Free memory was 236.1 MB in the beginning and 234.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 14:16:12,685 INFO L168 Benchmark]: Boogie Preprocessor took 11.40 ms. Allocated memory is still 255.9 MB. Free memory was 234.5 MB in the beginning and 233.8 MB in the end (delta: 702.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 14:16:12,685 INFO L168 Benchmark]: RCFGBuilder took 235.66 ms. Allocated memory is still 255.9 MB. Free memory was 233.6 MB in the beginning and 240.8 MB in the end (delta: -7.2 MB). Peak memory consumption was 17.6 MB. Max. memory is 16.0 GB. [2021-03-11 14:16:12,686 INFO L168 Benchmark]: TraceAbstraction took 458.28 ms. Allocated memory is still 255.9 MB. Free memory was 240.2 MB in the beginning and 198.2 MB in the end (delta: 41.9 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.0 GB. [2021-03-11 14:16:12,688 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 0.09 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 21.18 ms. Allocated memory is still 255.9 MB. Free memory was 236.1 MB in the beginning and 234.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 11.40 ms. Allocated memory is still 255.9 MB. Free memory was 234.5 MB in the beginning and 233.8 MB in the end (delta: 702.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 235.66 ms. Allocated memory is still 255.9 MB. Free memory was 233.6 MB in the beginning and 240.8 MB in the end (delta: -7.2 MB). Peak memory consumption was 17.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 458.28 ms. Allocated memory is still 255.9 MB. Free memory was 240.2 MB in the beginning and 198.2 MB in the end (delta: 41.9 MB). Peak memory consumption was 41.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 171.7ms, 20 PlacesBefore, 15 PlacesAfterwards, 16 TransitionsBefore, 11 TransitionsAfterwards, 16 CoEnabledTransitionPairs, 2 FixpointIterations, 4 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 7 TotalNumberOfCompositions, 18 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 18, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 11, positive: 11, positive conditional: 0, positive unconditional: 11, 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: 11, positive: 11, positive conditional: 0, positive unconditional: 11, 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: 18, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 11, unknown conditional: 0, unknown unconditional: 11] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 28]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 27]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 24]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 25]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 395.1ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 4.7ms, AutomataDifference: 43.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 203.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5 SDtfs, 9 SDslu, 0 SDs, 0 SdLazy, 8 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 11.3ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 3.1ms SsaConstructionTime, 11.5ms SatisfiabilityAnalysisTime, 40.0ms InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...