/usr/bin/java -Xmx8000000000 -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-NoLbe-OGIterative-CovSimpl.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/SpecificationInliningProblem.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 07:41:15,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 07:41:15,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 07:41:15,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-13 07:41:15,699 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-NoLbe-OGIterative-CovSimpl.epf [2021-08-13 07:41:15,734 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 07:41:15,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 07:41:15,737 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 07:41:15,737 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 07:41:15,737 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 07:41:15,738 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 07:41:15,738 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 07:41:15,738 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 07:41:15,738 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 07:41:15,738 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 07:41:15,739 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 07:41:15,739 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 07:41:15,739 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 07:41:15,739 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 07:41:15,739 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 07:41:15,739 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 07:41:15,740 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 07:41:15,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 07:41:15,740 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 07:41:15,740 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 07:41:15,740 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 07:41:15,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 07:41:15,741 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 07:41:15,741 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 07:41:15,741 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 07:41:15,741 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 07:41:15,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 07:41:15,741 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 07:41:15,742 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 07:41:15,742 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 07:41:15,742 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 07:41:15,742 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-13 07:41:15,742 INFO L138 SettingsManager]: * Simplify away covered predicates in OwickiGries annotation=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 07:41:16,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 07:41:16,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 07:41:16,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 07:41:16,055 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-13 07:41:16,058 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-13 07:41:16,059 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/SpecificationInliningProblem.bpl [2021-08-13 07:41:16,060 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/SpecificationInliningProblem.bpl' [2021-08-13 07:41:16,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 07:41:16,080 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-13 07:41:16,087 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 07:41:16,087 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 07:41:16,087 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 07:41:16,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "SpecificationInliningProblem.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:41:16" (1/1) ... [2021-08-13 07:41:16,106 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "SpecificationInliningProblem.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:41:16" (1/1) ... [2021-08-13 07:41:16,113 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 07:41:16,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 07:41:16,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 07:41:16,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 07:41:16,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "SpecificationInliningProblem.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:41:16" (1/1) ... [2021-08-13 07:41:16,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "SpecificationInliningProblem.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:41:16" (1/1) ... [2021-08-13 07:41:16,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "SpecificationInliningProblem.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:41:16" (1/1) ... [2021-08-13 07:41:16,123 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "SpecificationInliningProblem.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:41:16" (1/1) ... [2021-08-13 07:41:16,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "SpecificationInliningProblem.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:41:16" (1/1) ... [2021-08-13 07:41:16,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "SpecificationInliningProblem.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:41:16" (1/1) ... [2021-08-13 07:41:16,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "SpecificationInliningProblem.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:41:16" (1/1) ... [2021-08-13 07:41:16,127 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 07:41:16,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 07:41:16,128 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 07:41:16,129 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 07:41:16,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "SpecificationInliningProblem.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:41:16" (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 [2021-08-13 07:41:16,195 INFO L130 BoogieDeclarations]: Found specification of procedure increment [2021-08-13 07:41:16,195 INFO L124 BoogieDeclarations]: Specification and implementation of procedure pineappleThread given in one single declaration [2021-08-13 07:41:16,195 INFO L130 BoogieDeclarations]: Found specification of procedure pineappleThread [2021-08-13 07:41:16,195 INFO L138 BoogieDeclarations]: Found implementation of procedure pineappleThread [2021-08-13 07:41:16,195 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-13 07:41:16,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 07:41:16,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 07:41:16,196 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-13 07:41:16,331 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 07:41:16,331 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-13 07:41:16,333 INFO L202 PluginConnector]: Adding new model SpecificationInliningProblem.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 07:41:16 BoogieIcfgContainer [2021-08-13 07:41:16,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 07:41:16,335 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 07:41:16,335 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 07:41:16,338 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 07:41:16,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "SpecificationInliningProblem.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 07:41:16" (1/2) ... [2021-08-13 07:41:16,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29531c71 and model type SpecificationInliningProblem.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 07:41:16, skipping insertion in model container [2021-08-13 07:41:16,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "SpecificationInliningProblem.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 07:41:16" (2/2) ... [2021-08-13 07:41:16,340 INFO L111 eAbstractionObserver]: Analyzing ICFG SpecificationInliningProblem.bpl [2021-08-13 07:41:16,349 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 07:41:16,350 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 07:41:16,351 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 07:41:16,389 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-13 07:41:16,410 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-13 07:41:16,446 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 07:41:16,446 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 07:41:16,446 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 07:41:16,446 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 07:41:16,446 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 07:41:16,447 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 07:41:16,447 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 07:41:16,447 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 07:41:16,455 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 12 places, 8 transitions, 21 flow [2021-08-13 07:41:16,471 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-08-13 07:41:16,471 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 07:41:16,473 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11 conditions, 7 events. 0/7 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 6 event pairs, 0 based on Foata normal form. 0/6 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-08-13 07:41:16,473 INFO L82 GeneralOperation]: Start removeDead. Operand has 12 places, 8 transitions, 21 flow [2021-08-13 07:41:16,476 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 9 places, 5 transitions, 13 flow [2021-08-13 07:41:16,479 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-08-13 07:41:16,479 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 07:41:16,479 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:41:16,480 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2021-08-13 07:41:16,480 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:41:16,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:41:16,486 INFO L82 PathProgramCache]: Analyzing trace with hash 38015, now seen corresponding path program 1 times [2021-08-13 07:41:16,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:41:16,494 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929971565] [2021-08-13 07:41:16,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:41:16,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:41:16,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:16,591 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 07:41:16,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:41:16,611 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:41:16,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929971565] [2021-08-13 07:41:16,612 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929971565] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:41:16,612 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:41:16,612 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-13 07:41:16,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049178535] [2021-08-13 07:41:16,619 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 07:41:16,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:41:16,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 07:41:16,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 07:41:16,633 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 8 [2021-08-13 07:41:16,636 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 9 places, 5 transitions, 13 flow. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-08-13 07:41:16,636 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:41:16,636 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 8 [2021-08-13 07:41:16,637 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:41:16,655 INFO L129 PetriNetUnfolder]: 0/5 cut-off events. [2021-08-13 07:41:16,656 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 07:41:16,656 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13 conditions, 5 events. 0/5 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 1 event pairs, 0 based on Foata normal form. 1/6 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-08-13 07:41:16,657 INFO L132 encePairwiseOnDemand]: 5/8 looper letters, 1 selfloop transitions, 2 changer transitions 0/5 dead transitions. [2021-08-13 07:41:16,657 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 5 transitions, 19 flow [2021-08-13 07:41:16,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 07:41:16,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 07:41:16,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 16 transitions. [2021-08-13 07:41:16,666 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2021-08-13 07:41:16,667 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 16 transitions. [2021-08-13 07:41:16,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 16 transitions. [2021-08-13 07:41:16,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:41:16,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 16 transitions. [2021-08-13 07:41:16,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) [2021-08-13 07:41:16,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2021-08-13 07:41:16,680 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2021-08-13 07:41:16,680 INFO L348 CegarLoopForPetriNet]: 9 programPoint places, 2 predicate places. [2021-08-13 07:41:16,681 INFO L482 AbstractCegarLoop]: Abstraction has has 11 places, 5 transitions, 19 flow [2021-08-13 07:41:16,681 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-08-13 07:41:16,681 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 07:41:16,681 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-08-13 07:41:16,682 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 07:41:16,682 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 07:41:16,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 07:41:16,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1178629, now seen corresponding path program 1 times [2021-08-13 07:41:16,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 07:41:16,685 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330669619] [2021-08-13 07:41:16,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 07:41:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 07:41:16,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 07:41:16,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:16,755 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-08-13 07:41:16,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 07:41:16,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 07:41:16,785 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 07:41:16,785 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330669619] [2021-08-13 07:41:16,785 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330669619] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 07:41:16,805 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 07:41:16,805 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-13 07:41:16,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471739479] [2021-08-13 07:41:16,807 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-08-13 07:41:16,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 07:41:16,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-13 07:41:16,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-13 07:41:16,808 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 8 [2021-08-13 07:41:16,808 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 11 places, 5 transitions, 19 flow. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2021-08-13 07:41:16,808 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 07:41:16,808 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 8 [2021-08-13 07:41:16,808 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 07:41:16,814 INFO L129 PetriNetUnfolder]: 0/4 cut-off events. [2021-08-13 07:41:16,815 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-08-13 07:41:16,815 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14 conditions, 4 events. 0/4 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/5 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-08-13 07:41:16,815 INFO L132 encePairwiseOnDemand]: 5/8 looper letters, 0 selfloop transitions, 0 changer transitions 4/4 dead transitions. [2021-08-13 07:41:16,815 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 13 places, 4 transitions, 19 flow [2021-08-13 07:41:16,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-13 07:41:16,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-08-13 07:41:16,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2021-08-13 07:41:16,816 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.59375 [2021-08-13 07:41:16,816 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 19 transitions. [2021-08-13 07:41:16,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 19 transitions. [2021-08-13 07:41:16,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 07:41:16,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 19 transitions. [2021-08-13 07:41:16,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2021-08-13 07:41:16,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2021-08-13 07:41:16,818 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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) [2021-08-13 07:41:16,818 INFO L348 CegarLoopForPetriNet]: 9 programPoint places, 4 predicate places. [2021-08-13 07:41:16,818 INFO L482 AbstractCegarLoop]: Abstraction has has 13 places, 4 transitions, 19 flow [2021-08-13 07:41:16,818 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2021-08-13 07:41:16,819 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 07:41:16,869 INFO L742 CegarLoopForPetriNet]: Computed Owicki-Gries annotation of size 544 in 48415026ns [2021-08-13 07:41:16,871 INFO L113 kiGriesValidityCheck]: 3#(or (and v_np2_1 (not v_np3_1) v_np5_1 (not v_np0_1) v_np8_1 (not v_np1_1) (<= g 3) (not v_np6_1) (< 2 g) (not v_np4_1) (not v_np7_1)) (and v_np2_1 (not v_np3_1) (= g 2) (<= 2 g) v_np8_1 (not v_np1_1) (not v_np6_1) (not v_np5_1) (<= g 2) (not v_np4_1) v_np0_1 (not v_np7_1)) (and v_np2_1 v_np3_1 (not v_np0_1) v_np8_1 (not v_np1_1) (<= g 3) (not v_np6_1) (< 2 g) (not v_np5_1) (not v_np4_1) (not v_np7_1))) [2021-08-13 07:41:16,883 INFO L113 kiGriesValidityCheck]: 2#(and v_np1_1 (not v_np3_1) (not v_np2_1) (not v_np8_1) v_np7_1 (not v_np0_1) (not v_np6_1) (not v_np5_1) (not v_np4_1)) [2021-08-13 07:41:16,886 INFO L113 kiGriesValidityCheck]: 1#(and v_np2_1 (not v_np3_1) (= g 2) (<= 2 g) v_np8_1 (not v_np1_1) (not v_np6_1) (not v_np5_1) (<= g 2) (not v_np4_1) v_np0_1 (not v_np7_1)) [2021-08-13 07:41:16,891 INFO L113 kiGriesValidityCheck]: 5#(and (not v_np3_1) v_np4_1 (not v_np2_1) (= g 2) (not v_np8_1) v_np7_1 (not v_np0_1) (<= 2 g) (not v_np1_1) (not v_np6_1) (not v_np5_1) (<= g 2)) [2021-08-13 07:41:16,891 INFO L113 kiGriesValidityCheck]: 8#(or (and v_np1_1 (not v_np3_1) (not v_np2_1) (not v_np8_1) v_np7_1 (not v_np0_1) (not v_np6_1) (not v_np5_1) (not v_np4_1)) (and (not v_np3_1) v_np4_1 (not v_np2_1) (= g 2) (not v_np8_1) v_np7_1 (not v_np0_1) (<= 2 g) (not v_np1_1) (not v_np6_1) (not v_np5_1) (<= g 2))) [2021-08-13 07:41:16,898 INFO L113 kiGriesValidityCheck]: 6#(and v_np2_1 (not v_np3_1) v_np5_1 (not v_np0_1) v_np8_1 (not v_np1_1) (<= g 3) (not v_np6_1) (< 2 g) (not v_np4_1) (not v_np7_1)) [2021-08-13 07:41:16,934 INFO L748 CegarLoopForPetriNet]: Checked inductivity and non-interference of Owicki-Gries annotation in 67209757ns [2021-08-13 07:41:16,937 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-13 07:41:16,940 INFO L202 PluginConnector]: Adding new model SpecificationInliningProblem.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.08 07:41:16 BasicIcfg [2021-08-13 07:41:16,940 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-13 07:41:16,941 INFO L168 Benchmark]: Toolchain (without parser) took 860.92 ms. Allocated memory is still 182.5 MB. Free memory was 163.0 MB in the beginning and 157.1 MB in the end (delta: 5.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. [2021-08-13 07:41:16,942 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.14 ms. Allocated memory is still 182.5 MB. Free memory is still 164.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-13 07:41:16,942 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.24 ms. Allocated memory is still 182.5 MB. Free memory was 162.9 MB in the beginning and 161.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-13 07:41:16,943 INFO L168 Benchmark]: Boogie Preprocessor took 12.79 ms. Allocated memory is still 182.5 MB. Free memory was 161.5 MB in the beginning and 160.6 MB in the end (delta: 899.7 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-13 07:41:16,943 INFO L168 Benchmark]: RCFGBuilder took 205.49 ms. Allocated memory is still 182.5 MB. Free memory was 160.6 MB in the beginning and 152.8 MB in the end (delta: 7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2021-08-13 07:41:16,944 INFO L168 Benchmark]: TraceAbstraction took 604.97 ms. Allocated memory is still 182.5 MB. Free memory was 152.4 MB in the beginning and 157.1 MB in the end (delta: -4.7 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-08-13 07:41:16,946 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 0.14 ms. Allocated memory is still 182.5 MB. Free memory is still 164.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 26.24 ms. Allocated memory is still 182.5 MB. Free memory was 162.9 MB in the beginning and 161.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 12.79 ms. Allocated memory is still 182.5 MB. Free memory was 161.5 MB in the beginning and 160.6 MB in the end (delta: 899.7 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 205.49 ms. Allocated memory is still 182.5 MB. Free memory was 160.6 MB in the beginning and 152.8 MB in the end (delta: 7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 604.97 ms. Allocated memory is still 182.5 MB. Free memory was 152.4 MB in the beginning and 157.1 MB in the end (delta: -4.7 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 30]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 13 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 376.6ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 64.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 29.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 6 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 70.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=1, InterpolantAutomatonStates: 7, 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: 4.6ms SsaConstructionTime, 19.1ms SatisfiabilityAnalysisTime, 137.5ms InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 27 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...