/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/fork_loop_noop.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 13:04:07,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 13:04:07,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 13:04:07,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 13:04:07,944 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf [2021-06-05 13:04:07,965 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 13:04:07,965 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 13:04:07,966 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 13:04:07,966 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 13:04:07,967 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 13:04:07,967 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 13:04:07,967 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 13:04:07,967 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 13:04:07,967 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 13:04:07,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 13:04:07,968 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 13:04:07,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 13:04:07,968 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 13:04:07,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 13:04:07,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 13:04:07,968 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 13:04:07,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 13:04:07,968 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 13:04:07,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 13:04:07,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 13:04:07,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 13:04:07,969 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 13:04:07,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 13:04:07,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 13:04:07,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 13:04:07,969 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 13:04:07,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 13:04:07,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 13:04:07,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 13:04:07,970 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 13:04:07,970 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 13:04:07,970 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-06-05 13:04:07,970 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 13:04:08,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 13:04:08,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 13:04:08,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 13:04:08,321 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 13:04:08,322 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 13:04:08,323 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/fork_loop_noop.bpl [2021-06-05 13:04:08,323 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/fork_loop_noop.bpl' [2021-06-05 13:04:08,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 13:04:08,354 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 13:04:08,365 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 13:04:08,365 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 13:04:08,365 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 13:04:08,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:04:08" (1/1) ... [2021-06-05 13:04:08,384 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:04:08" (1/1) ... [2021-06-05 13:04:08,391 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 13:04:08,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 13:04:08,393 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 13:04:08,393 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 13:04:08,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:04:08" (1/1) ... [2021-06-05 13:04:08,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:04:08" (1/1) ... [2021-06-05 13:04:08,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:04:08" (1/1) ... [2021-06-05 13:04:08,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:04:08" (1/1) ... [2021-06-05 13:04:08,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:04:08" (1/1) ... [2021-06-05 13:04:08,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:04:08" (1/1) ... [2021-06-05 13:04:08,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:04:08" (1/1) ... [2021-06-05 13:04:08,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 13:04:08,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 13:04:08,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 13:04:08,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 13:04:08,406 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:04:08" (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 [2021-06-05 13:04:08,500 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 13:04:08,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 13:04:08,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 13:04:08,500 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread given in one single declaration [2021-06-05 13:04:08,500 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2021-06-05 13:04:08,500 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2021-06-05 13:04:08,501 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 13:04:08,605 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 13:04:08,605 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-06-05 13:04:08,606 INFO L202 PluginConnector]: Adding new model fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 01:04:08 BoogieIcfgContainer [2021-06-05 13:04:08,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 13:04:08,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 13:04:08,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 13:04:08,610 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 13:04:08,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:04:08" (1/2) ... [2021-06-05 13:04:08,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a4d08e and model type fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 01:04:08, skipping insertion in model container [2021-06-05 13:04:08,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 01:04:08" (2/2) ... [2021-06-05 13:04:08,612 INFO L111 eAbstractionObserver]: Analyzing ICFG fork_loop_noop.bpl [2021-06-05 13:04:08,617 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 13:04:08,617 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 13:04:08,618 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 13:04:08,618 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 13:04:08,636 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 13:04:08,655 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 13:04:08,672 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 13:04:08,672 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 13:04:08,672 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 13:04:08,672 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 13:04:08,672 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 13:04:08,672 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 13:04:08,672 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 13:04:08,673 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 13:04:08,679 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 11 places, 8 transitions, 21 flow [2021-06-05 13:04:08,687 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 20 states, 15 states have (on average 1.8) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:04:08,689 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 15 states have (on average 1.8) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:04:08,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-06-05 13:04:08,693 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:04:08,694 INFO L521 BasicCegarLoop]: trace histogram [1, 1] [2021-06-05 13:04:08,694 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:04:08,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:04:08,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1315, now seen corresponding path program 1 times [2021-06-05 13:04:08,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:04:08,706 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897968857] [2021-06-05 13:04:08,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:04:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:04:08,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:04:08,824 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:04:08,825 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897968857] [2021-06-05 13:04:08,825 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897968857] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:04:08,826 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:04:08,826 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-05 13:04:08,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506190873] [2021-06-05 13:04:08,829 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 13:04:08,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:04:08,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 13:04:08,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 13:04:08,847 INFO L87 Difference]: Start difference. First operand has 20 states, 15 states have (on average 1.8) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-06-05 13:04:08,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:04:08,861 INFO L93 Difference]: Finished difference Result 16 states and 21 transitions. [2021-06-05 13:04:08,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 13:04:08,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2021-06-05 13:04:08,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:04:08,867 INFO L225 Difference]: With dead ends: 16 [2021-06-05 13:04:08,867 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 13:04:08,869 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 13:04:08,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 13:04:08,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 13:04:08,886 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) [2021-06-05 13:04:08,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 13:04:08,887 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2 [2021-06-05 13:04:08,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:04:08,887 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 13:04:08,887 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-06-05 13:04:08,887 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 13:04:08,887 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 13:04:08,888 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 13:04:08,889 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-06-05 13:04:08,890 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 13:04:08,896 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 13:04:08,896 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 13:04:08,896 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 13:04:08,896 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 13:04:08,897 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 13:04:08,897 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 13:04:08,897 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 13:04:08,897 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-06-05 13:04:08,898 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 11 places, 8 transitions, 21 flow [2021-06-05 13:04:08,900 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 20 states, 15 states have (on average 1.8) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:04:08,901 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 15 states have (on average 1.8) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 13:04:08,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-06-05 13:04:08,901 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:04:08,901 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-06-05 13:04:08,901 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-05 13:04:08,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:04:08,910 INFO L82 PathProgramCache]: Analyzing trace with hash 41033, now seen corresponding path program 1 times [2021-06-05 13:04:08,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:04:08,910 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058939707] [2021-06-05 13:04:08,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:04:08,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 13:04:08,917 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 13:04:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 13:04:08,922 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 13:04:08,937 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-05 13:04:08,937 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-06-05 13:04:08,938 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 13:04:08,938 INFO L315 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2021-06-05 13:04:08,939 WARN L242 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-05 13:04:08,939 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-06-05 13:04:08,953 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 13:04:08,953 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 13:04:08,955 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 13:04:08,955 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 13:04:08,955 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 13:04:08,956 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 13:04:08,957 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 13:04:08,957 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 13:04:08,957 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 13:04:08,957 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 13:04:08,958 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 16 places, 11 transitions, 34 flow [2021-06-05 13:04:08,968 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 62 states, 55 states have (on average 2.2) internal successors, (121), 61 states have internal predecessors, (121), 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) [2021-06-05 13:04:08,969 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 55 states have (on average 2.2) internal successors, (121), 61 states have internal predecessors, (121), 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) [2021-06-05 13:04:08,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-06-05 13:04:08,970 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:04:08,970 INFO L521 BasicCegarLoop]: trace histogram [1, 1] [2021-06-05 13:04:08,970 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:04:08,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:04:08,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1667, now seen corresponding path program 1 times [2021-06-05 13:04:08,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:04:08,972 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102158343] [2021-06-05 13:04:08,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:04:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:04:09,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:04:09,006 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:04:09,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102158343] [2021-06-05 13:04:09,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102158343] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:04:09,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:04:09,007 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-05 13:04:09,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148419854] [2021-06-05 13:04:09,007 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 13:04:09,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:04:09,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 13:04:09,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 13:04:09,008 INFO L87 Difference]: Start difference. First operand has 62 states, 55 states have (on average 2.2) internal successors, (121), 61 states have internal predecessors, (121), 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 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-06-05 13:04:09,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:04:09,015 INFO L93 Difference]: Finished difference Result 49 states and 94 transitions. [2021-06-05 13:04:09,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 13:04:09,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2021-06-05 13:04:09,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:04:09,018 INFO L225 Difference]: With dead ends: 49 [2021-06-05 13:04:09,018 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 13:04:09,018 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 13:04:09,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 13:04:09,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 13:04:09,018 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) [2021-06-05 13:04:09,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 13:04:09,019 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2 [2021-06-05 13:04:09,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:04:09,019 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 13:04:09,019 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-06-05 13:04:09,019 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 13:04:09,019 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 13:04:09,019 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 13:04:09,019 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-06-05 13:04:09,020 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 13:04:09,020 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 13:04:09,020 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 13:04:09,020 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 13:04:09,020 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 13:04:09,021 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 13:04:09,021 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 13:04:09,021 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 13:04:09,021 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-06-05 13:04:09,021 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 16 places, 11 transitions, 34 flow [2021-06-05 13:04:09,024 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 62 states, 55 states have (on average 2.2) internal successors, (121), 61 states have internal predecessors, (121), 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) [2021-06-05 13:04:09,024 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 55 states have (on average 2.2) internal successors, (121), 61 states have internal predecessors, (121), 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) [2021-06-05 13:04:09,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-06-05 13:04:09,024 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:04:09,024 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-06-05 13:04:09,025 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-05 13:04:09,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:04:09,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1612715, now seen corresponding path program 1 times [2021-06-05 13:04:09,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:04:09,025 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097912738] [2021-06-05 13:04:09,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:04:09,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 13:04:09,028 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 13:04:09,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 13:04:09,034 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 13:04:09,036 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-05 13:04:09,036 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-06-05 13:04:09,036 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 13:04:09,036 INFO L315 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2021-06-05 13:04:09,037 WARN L242 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-05 13:04:09,037 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2021-06-05 13:04:09,065 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 13:04:09,066 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 13:04:09,066 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 13:04:09,067 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 13:04:09,067 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 13:04:09,067 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 13:04:09,067 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 13:04:09,067 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 13:04:09,067 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 13:04:09,067 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 13:04:09,068 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 14 transitions, 49 flow [2021-06-05 13:04:09,079 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 188 states, 179 states have (on average 2.7206703910614527) internal successors, (487), 187 states have internal predecessors, (487), 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) [2021-06-05 13:04:09,080 INFO L276 IsEmpty]: Start isEmpty. Operand has 188 states, 179 states have (on average 2.7206703910614527) internal successors, (487), 187 states have internal predecessors, (487), 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) [2021-06-05 13:04:09,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-06-05 13:04:09,109 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:04:09,109 INFO L521 BasicCegarLoop]: trace histogram [1, 1] [2021-06-05 13:04:09,109 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:04:09,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:04:09,110 INFO L82 PathProgramCache]: Analyzing trace with hash 2115, now seen corresponding path program 1 times [2021-06-05 13:04:09,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:04:09,110 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135164069] [2021-06-05 13:04:09,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:04:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:04:09,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:04:09,120 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:04:09,120 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135164069] [2021-06-05 13:04:09,121 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135164069] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:04:09,121 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:04:09,121 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-05 13:04:09,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086230191] [2021-06-05 13:04:09,121 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 13:04:09,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:04:09,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 13:04:09,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 13:04:09,123 INFO L87 Difference]: Start difference. First operand has 188 states, 179 states have (on average 2.7206703910614527) internal successors, (487), 187 states have internal predecessors, (487), 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 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-06-05 13:04:09,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:04:09,147 INFO L93 Difference]: Finished difference Result 148 states and 379 transitions. [2021-06-05 13:04:09,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 13:04:09,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2021-06-05 13:04:09,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:04:09,149 INFO L225 Difference]: With dead ends: 148 [2021-06-05 13:04:09,149 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 13:04:09,150 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 13:04:09,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 13:04:09,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 13:04:09,150 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) [2021-06-05 13:04:09,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 13:04:09,150 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2 [2021-06-05 13:04:09,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:04:09,150 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 13:04:09,150 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-06-05 13:04:09,151 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 13:04:09,151 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 13:04:09,151 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 13:04:09,151 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-06-05 13:04:09,151 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 13:04:09,152 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 13:04:09,152 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 13:04:09,152 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 13:04:09,152 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 13:04:09,152 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 13:04:09,152 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 13:04:09,152 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 13:04:09,152 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-06-05 13:04:09,153 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 14 transitions, 49 flow [2021-06-05 13:04:09,159 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 188 states, 179 states have (on average 2.7206703910614527) internal successors, (487), 187 states have internal predecessors, (487), 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) [2021-06-05 13:04:09,160 INFO L276 IsEmpty]: Start isEmpty. Operand has 188 states, 179 states have (on average 2.7206703910614527) internal successors, (487), 187 states have internal predecessors, (487), 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) [2021-06-05 13:04:09,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-06-05 13:04:09,161 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:04:09,161 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-06-05 13:04:09,161 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-05 13:04:09,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:04:09,162 INFO L82 PathProgramCache]: Analyzing trace with hash 63416129, now seen corresponding path program 1 times [2021-06-05 13:04:09,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:04:09,162 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236958371] [2021-06-05 13:04:09,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:04:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 13:04:09,170 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 13:04:09,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 13:04:09,175 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 13:04:09,179 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-05 13:04:09,179 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-06-05 13:04:09,181 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 13:04:09,182 INFO L315 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2021-06-05 13:04:09,183 WARN L242 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-05 13:04:09,183 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2021-06-05 13:04:09,210 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 13:04:09,211 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 13:04:09,211 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 13:04:09,212 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 13:04:09,212 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 13:04:09,212 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 13:04:09,212 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 13:04:09,212 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 13:04:09,212 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 13:04:09,212 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 13:04:09,213 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 26 places, 17 transitions, 66 flow [2021-06-05 13:04:09,250 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 566 states, 555 states have (on average 3.30990990990991) internal successors, (1837), 565 states have internal predecessors, (1837), 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) [2021-06-05 13:04:09,252 INFO L276 IsEmpty]: Start isEmpty. Operand has 566 states, 555 states have (on average 3.30990990990991) internal successors, (1837), 565 states have internal predecessors, (1837), 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) [2021-06-05 13:04:09,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-06-05 13:04:09,252 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:04:09,252 INFO L521 BasicCegarLoop]: trace histogram [1, 1] [2021-06-05 13:04:09,253 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:04:09,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:04:09,254 INFO L82 PathProgramCache]: Analyzing trace with hash 2659, now seen corresponding path program 1 times [2021-06-05 13:04:09,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:04:09,254 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958441216] [2021-06-05 13:04:09,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:04:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:04:09,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:04:09,274 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:04:09,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958441216] [2021-06-05 13:04:09,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958441216] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:04:09,275 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:04:09,276 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-05 13:04:09,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236595780] [2021-06-05 13:04:09,276 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 13:04:09,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:04:09,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 13:04:09,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 13:04:09,279 INFO L87 Difference]: Start difference. First operand has 566 states, 555 states have (on average 3.30990990990991) internal successors, (1837), 565 states have internal predecessors, (1837), 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 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-06-05 13:04:09,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:04:09,303 INFO L93 Difference]: Finished difference Result 445 states and 1432 transitions. [2021-06-05 13:04:09,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 13:04:09,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2021-06-05 13:04:09,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:04:09,305 INFO L225 Difference]: With dead ends: 445 [2021-06-05 13:04:09,305 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 13:04:09,305 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 13:04:09,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 13:04:09,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 13:04:09,306 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) [2021-06-05 13:04:09,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 13:04:09,306 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2 [2021-06-05 13:04:09,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:04:09,306 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 13:04:09,306 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-06-05 13:04:09,306 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 13:04:09,306 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 13:04:09,307 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 13:04:09,307 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-06-05 13:04:09,307 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 13:04:09,308 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 13:04:09,308 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 13:04:09,309 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 13:04:09,309 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 13:04:09,309 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 13:04:09,309 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 13:04:09,309 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 13:04:09,309 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-06-05 13:04:09,311 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 26 places, 17 transitions, 66 flow [2021-06-05 13:04:09,331 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 566 states, 555 states have (on average 3.30990990990991) internal successors, (1837), 565 states have internal predecessors, (1837), 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) [2021-06-05 13:04:09,332 INFO L276 IsEmpty]: Start isEmpty. Operand has 566 states, 555 states have (on average 3.30990990990991) internal successors, (1837), 565 states have internal predecessors, (1837), 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) [2021-06-05 13:04:09,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-06-05 13:04:09,334 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:04:09,334 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-06-05 13:04:09,334 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-05 13:04:09,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:04:09,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1824239762, now seen corresponding path program 1 times [2021-06-05 13:04:09,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:04:09,336 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189479503] [2021-06-05 13:04:09,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:04:09,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 13:04:09,346 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 13:04:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 13:04:09,351 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 13:04:09,354 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-05 13:04:09,355 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-06-05 13:04:09,355 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 13:04:09,355 INFO L315 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2021-06-05 13:04:09,355 WARN L242 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-05 13:04:09,355 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2021-06-05 13:04:09,370 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 13:04:09,370 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 13:04:09,372 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 13:04:09,372 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 13:04:09,372 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 13:04:09,372 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 13:04:09,372 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 13:04:09,372 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 13:04:09,372 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 13:04:09,372 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 13:04:09,374 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 20 transitions, 85 flow [2021-06-05 13:04:09,458 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1700 states, 1687 states have (on average 3.9377593360995853) internal successors, (6643), 1699 states have internal predecessors, (6643), 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) [2021-06-05 13:04:09,463 INFO L276 IsEmpty]: Start isEmpty. Operand has 1700 states, 1687 states have (on average 3.9377593360995853) internal successors, (6643), 1699 states have internal predecessors, (6643), 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) [2021-06-05 13:04:09,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-06-05 13:04:09,463 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:04:09,463 INFO L521 BasicCegarLoop]: trace histogram [1, 1] [2021-06-05 13:04:09,464 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:04:09,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:04:09,465 INFO L82 PathProgramCache]: Analyzing trace with hash 3299, now seen corresponding path program 1 times [2021-06-05 13:04:09,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:04:09,465 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970628705] [2021-06-05 13:04:09,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:04:09,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:04:09,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:04:09,480 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:04:09,480 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970628705] [2021-06-05 13:04:09,480 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970628705] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:04:09,480 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:04:09,481 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-05 13:04:09,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439881096] [2021-06-05 13:04:09,481 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 13:04:09,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:04:09,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 13:04:09,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 13:04:09,491 INFO L87 Difference]: Start difference. First operand has 1700 states, 1687 states have (on average 3.9377593360995853) internal successors, (6643), 1699 states have internal predecessors, (6643), 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 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-06-05 13:04:09,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:04:09,514 INFO L93 Difference]: Finished difference Result 1336 states and 5185 transitions. [2021-06-05 13:04:09,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 13:04:09,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2021-06-05 13:04:09,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:04:09,518 INFO L225 Difference]: With dead ends: 1336 [2021-06-05 13:04:09,519 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 13:04:09,519 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 13:04:09,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 13:04:09,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 13:04:09,520 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) [2021-06-05 13:04:09,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 13:04:09,520 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2 [2021-06-05 13:04:09,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:04:09,520 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 13:04:09,520 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-06-05 13:04:09,520 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 13:04:09,520 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 13:04:09,521 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-05 13:04:09,521 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-06-05 13:04:09,521 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 13:04:09,523 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 13:04:09,523 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 13:04:09,523 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 13:04:09,523 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 13:04:09,523 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 13:04:09,523 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 13:04:09,523 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 13:04:09,523 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-06-05 13:04:09,525 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 20 transitions, 85 flow [2021-06-05 13:04:09,581 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1700 states, 1687 states have (on average 3.9377593360995853) internal successors, (6643), 1699 states have internal predecessors, (6643), 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) [2021-06-05 13:04:09,585 INFO L276 IsEmpty]: Start isEmpty. Operand has 1700 states, 1687 states have (on average 3.9377593360995853) internal successors, (6643), 1699 states have internal predecessors, (6643), 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) [2021-06-05 13:04:09,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-06-05 13:04:09,590 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:04:09,590 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:04:09,590 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-05 13:04:09,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:04:09,590 INFO L82 PathProgramCache]: Analyzing trace with hash 504182917, now seen corresponding path program 1 times [2021-06-05 13:04:09,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:04:09,591 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497315057] [2021-06-05 13:04:09,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:04:09,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 13:04:09,595 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 13:04:09,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 13:04:09,597 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 13:04:09,598 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-05 13:04:09,598 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-06-05 13:04:09,599 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-05 13:04:09,599 INFO L315 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2021-06-05 13:04:09,599 WARN L242 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-05 13:04:09,599 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2021-06-05 13:04:09,609 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 13:04:09,609 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 13:04:09,610 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 13:04:09,610 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 13:04:09,610 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 13:04:09,611 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 13:04:09,611 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 13:04:09,611 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 13:04:09,611 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 13:04:09,611 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 13:04:09,612 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 23 transitions, 106 flow [2021-06-05 13:04:09,937 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5102 states, 5087 states have (on average 4.586003538431296) internal successors, (23329), 5101 states have internal predecessors, (23329), 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) [2021-06-05 13:04:09,952 INFO L276 IsEmpty]: Start isEmpty. Operand has 5102 states, 5087 states have (on average 4.586003538431296) internal successors, (23329), 5101 states have internal predecessors, (23329), 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) [2021-06-05 13:04:09,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-06-05 13:04:09,953 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:04:09,953 INFO L521 BasicCegarLoop]: trace histogram [1, 1] [2021-06-05 13:04:09,953 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:04:09,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:04:09,954 INFO L82 PathProgramCache]: Analyzing trace with hash 4035, now seen corresponding path program 1 times [2021-06-05 13:04:09,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:04:09,955 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559477147] [2021-06-05 13:04:09,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:04:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:04:09,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:04:09,976 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:04:09,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559477147] [2021-06-05 13:04:09,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559477147] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:04:09,976 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:04:09,977 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-05 13:04:09,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846789325] [2021-06-05 13:04:09,978 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 13:04:09,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:04:09,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 13:04:09,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 13:04:09,993 INFO L87 Difference]: Start difference. First operand has 5102 states, 5087 states have (on average 4.586003538431296) internal successors, (23329), 5101 states have internal predecessors, (23329), 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 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-06-05 13:04:10,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:04:10,050 INFO L93 Difference]: Finished difference Result 4009 states and 18226 transitions. [2021-06-05 13:04:10,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 13:04:10,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2021-06-05 13:04:10,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:04:10,051 INFO L225 Difference]: With dead ends: 4009 [2021-06-05 13:04:10,051 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 13:04:10,051 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 13:04:10,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 13:04:10,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 13:04:10,052 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) [2021-06-05 13:04:10,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 13:04:10,052 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2 [2021-06-05 13:04:10,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:04:10,052 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 13:04:10,052 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-06-05 13:04:10,052 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 13:04:10,052 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 13:04:10,052 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-05 13:04:10,054 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-06-05 13:04:10,054 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 13:04:10,056 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 13:04:10,057 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 13:04:10,057 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 13:04:10,057 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 13:04:10,057 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 13:04:10,057 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 13:04:10,057 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 13:04:10,057 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-06-05 13:04:10,060 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 23 transitions, 106 flow [2021-06-05 13:04:10,340 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5102 states, 5087 states have (on average 4.586003538431296) internal successors, (23329), 5101 states have internal predecessors, (23329), 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) [2021-06-05 13:04:10,352 INFO L276 IsEmpty]: Start isEmpty. Operand has 5102 states, 5087 states have (on average 4.586003538431296) internal successors, (23329), 5101 states have internal predecessors, (23329), 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) [2021-06-05 13:04:10,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-06-05 13:04:10,357 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:04:10,357 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:04:10,357 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-05 13:04:10,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:04:10,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1332075505, now seen corresponding path program 1 times [2021-06-05 13:04:10,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:04:10,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769946699] [2021-06-05 13:04:10,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:04:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 13:04:10,369 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 13:04:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 13:04:10,378 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 13:04:10,382 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-05 13:04:10,383 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-06-05 13:04:10,383 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-05 13:04:10,383 INFO L315 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2021-06-05 13:04:10,383 WARN L242 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-05 13:04:10,383 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2021-06-05 13:04:10,398 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 13:04:10,400 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 13:04:10,400 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 13:04:10,400 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 13:04:10,400 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 13:04:10,400 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 13:04:10,400 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 13:04:10,400 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 13:04:10,400 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 13:04:10,401 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 13:04:10,402 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 26 transitions, 129 flow [2021-06-05 13:04:11,793 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 15308 states, 15291 states have (on average 5.244326728140736) internal successors, (80191), 15307 states have internal predecessors, (80191), 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) [2021-06-05 13:04:11,827 INFO L276 IsEmpty]: Start isEmpty. Operand has 15308 states, 15291 states have (on average 5.244326728140736) internal successors, (80191), 15307 states have internal predecessors, (80191), 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) [2021-06-05 13:04:11,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-06-05 13:04:11,828 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:04:11,828 INFO L521 BasicCegarLoop]: trace histogram [1, 1] [2021-06-05 13:04:11,829 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:04:11,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:04:11,830 INFO L82 PathProgramCache]: Analyzing trace with hash 4867, now seen corresponding path program 1 times [2021-06-05 13:04:11,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:04:11,830 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256013701] [2021-06-05 13:04:11,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:04:11,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:04:11,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:04:11,855 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:04:11,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256013701] [2021-06-05 13:04:11,855 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256013701] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:04:11,855 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:04:11,855 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-05 13:04:11,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366152983] [2021-06-05 13:04:11,855 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 13:04:11,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:04:11,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 13:04:11,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 13:04:11,882 INFO L87 Difference]: Start difference. First operand has 15308 states, 15291 states have (on average 5.244326728140736) internal successors, (80191), 15307 states have internal predecessors, (80191), 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 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-06-05 13:04:12,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:04:12,171 INFO L93 Difference]: Finished difference Result 12028 states and 62695 transitions. [2021-06-05 13:04:12,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 13:04:12,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2021-06-05 13:04:12,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:04:12,172 INFO L225 Difference]: With dead ends: 12028 [2021-06-05 13:04:12,172 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 13:04:12,173 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 13:04:12,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 13:04:12,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 13:04:12,173 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) [2021-06-05 13:04:12,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 13:04:12,173 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2 [2021-06-05 13:04:12,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:04:12,173 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 13:04:12,173 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-06-05 13:04:12,174 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 13:04:12,174 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 13:04:12,174 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-05 13:04:12,174 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-06-05 13:04:12,174 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 13:04:12,176 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 13:04:12,176 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 13:04:12,176 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 13:04:12,176 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 13:04:12,176 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 13:04:12,176 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 13:04:12,176 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 13:04:12,176 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-06-05 13:04:12,179 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 26 transitions, 129 flow [2021-06-05 13:04:13,434 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 15308 states, 15291 states have (on average 5.244326728140736) internal successors, (80191), 15307 states have internal predecessors, (80191), 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) [2021-06-05 13:04:13,456 INFO L276 IsEmpty]: Start isEmpty. Operand has 15308 states, 15291 states have (on average 5.244326728140736) internal successors, (80191), 15307 states have internal predecessors, (80191), 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) [2021-06-05 13:04:13,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-06-05 13:04:13,458 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:04:13,458 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:04:13,458 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-05 13:04:13,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:04:13,458 INFO L82 PathProgramCache]: Analyzing trace with hash 58177429, now seen corresponding path program 1 times [2021-06-05 13:04:13,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:04:13,459 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343681524] [2021-06-05 13:04:13,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:04:13,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 13:04:13,462 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 13:04:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 13:04:13,464 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 13:04:13,465 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-05 13:04:13,465 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-06-05 13:04:13,466 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-05 13:04:13,466 INFO L315 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2021-06-05 13:04:13,466 WARN L242 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-05 13:04:13,466 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2021-06-05 13:04:13,480 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 13:04:13,481 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 13:04:13,481 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 13:04:13,481 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 13:04:13,481 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 13:04:13,482 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 13:04:13,482 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 13:04:13,482 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 13:04:13,482 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 13:04:13,482 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 13:04:13,483 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 29 transitions, 154 flow [2021-06-05 13:04:26,158 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 45926 states, 45907 states have (on average 5.907356176617945) internal successors, (271189), 45925 states have internal predecessors, (271189), 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) [2021-06-05 13:04:26,230 INFO L276 IsEmpty]: Start isEmpty. Operand has 45926 states, 45907 states have (on average 5.907356176617945) internal successors, (271189), 45925 states have internal predecessors, (271189), 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) [2021-06-05 13:04:26,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-06-05 13:04:26,230 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:04:26,231 INFO L521 BasicCegarLoop]: trace histogram [1, 1] [2021-06-05 13:04:26,231 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:04:26,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:04:26,232 INFO L82 PathProgramCache]: Analyzing trace with hash 5795, now seen corresponding path program 1 times [2021-06-05 13:04:26,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:04:26,232 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951186862] [2021-06-05 13:04:26,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:04:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:04:26,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:04:26,240 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:04:26,240 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951186862] [2021-06-05 13:04:26,240 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951186862] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:04:26,240 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:04:26,240 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-05 13:04:26,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669691348] [2021-06-05 13:04:26,240 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 13:04:26,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:04:26,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 13:04:26,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 13:04:26,309 INFO L87 Difference]: Start difference. First operand has 45926 states, 45907 states have (on average 5.907356176617945) internal successors, (271189), 45925 states have internal predecessors, (271189), 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 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-06-05 13:04:27,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:04:27,229 INFO L93 Difference]: Finished difference Result 36085 states and 212140 transitions. [2021-06-05 13:04:27,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 13:04:27,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2021-06-05 13:04:27,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:04:27,230 INFO L225 Difference]: With dead ends: 36085 [2021-06-05 13:04:27,230 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 13:04:27,231 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 13:04:27,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 13:04:27,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 13:04:27,231 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) [2021-06-05 13:04:27,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 13:04:27,231 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2 [2021-06-05 13:04:27,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:04:27,231 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 13:04:27,231 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-06-05 13:04:27,231 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 13:04:27,231 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 13:04:27,232 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-05 13:04:27,232 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-06-05 13:04:27,232 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 13:04:27,234 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 13:04:27,234 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 13:04:27,234 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 13:04:27,234 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 13:04:27,234 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 13:04:27,234 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 13:04:27,234 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 13:04:27,234 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-06-05 13:04:27,235 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 29 transitions, 154 flow [2021-06-05 13:04:39,423 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 45926 states, 45907 states have (on average 5.907356176617945) internal successors, (271189), 45925 states have internal predecessors, (271189), 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) [2021-06-05 13:04:39,487 INFO L276 IsEmpty]: Start isEmpty. Operand has 45926 states, 45907 states have (on average 5.907356176617945) internal successors, (271189), 45925 states have internal predecessors, (271189), 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) [2021-06-05 13:04:39,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-06-05 13:04:39,500 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:04:39,500 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:04:39,500 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-05 13:04:39,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:04:39,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1055505844, now seen corresponding path program 1 times [2021-06-05 13:04:39,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:04:39,501 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276940756] [2021-06-05 13:04:39,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:04:39,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 13:04:39,514 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 13:04:39,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 13:04:39,517 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 13:04:39,518 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-05 13:04:39,519 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-06-05 13:04:39,519 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-05 13:04:39,519 INFO L315 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2021-06-05 13:04:39,519 WARN L242 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-05 13:04:39,519 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2021-06-05 13:04:39,530 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 13:04:39,531 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 13:04:39,531 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 13:04:39,531 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 13:04:39,531 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 13:04:39,531 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 13:04:39,532 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 13:04:39,532 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 13:04:39,532 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 13:04:39,532 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 13:04:39,532 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 32 transitions, 181 flow [2021-06-05 13:06:22,231 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 137780 states, 137759 states have (on average 6.5724852822683095) internal successors, (905419), 137779 states have internal predecessors, (905419), 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) [2021-06-05 13:06:22,474 INFO L276 IsEmpty]: Start isEmpty. Operand has 137780 states, 137759 states have (on average 6.5724852822683095) internal successors, (905419), 137779 states have internal predecessors, (905419), 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) [2021-06-05 13:06:22,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-06-05 13:06:22,474 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:06:22,475 INFO L521 BasicCegarLoop]: trace histogram [1, 1] [2021-06-05 13:06:22,475 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:06:22,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:06:22,475 INFO L82 PathProgramCache]: Analyzing trace with hash 6819, now seen corresponding path program 1 times [2021-06-05 13:06:22,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:06:22,475 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321742639] [2021-06-05 13:06:22,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:06:22,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:06:22,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:06:22,776 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:06:22,776 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321742639] [2021-06-05 13:06:22,777 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321742639] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:06:22,777 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:06:22,777 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-05 13:06:22,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019797468] [2021-06-05 13:06:22,777 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 13:06:22,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:06:22,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 13:06:22,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 13:06:23,013 INFO L87 Difference]: Start difference. First operand has 137780 states, 137759 states have (on average 6.5724852822683095) internal successors, (905419), 137779 states have internal predecessors, (905419), 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 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-06-05 13:06:24,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:06:24,842 INFO L93 Difference]: Finished difference Result 108256 states and 708589 transitions. [2021-06-05 13:06:24,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 13:06:24,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2021-06-05 13:06:24,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:06:24,842 INFO L225 Difference]: With dead ends: 108256 [2021-06-05 13:06:24,843 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 13:06:24,843 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 13:06:24,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 13:06:24,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 13:06:24,843 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) [2021-06-05 13:06:24,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 13:06:24,843 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2 [2021-06-05 13:06:24,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:06:24,843 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 13:06:24,843 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-06-05 13:06:24,843 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 13:06:24,843 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 13:06:24,844 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-05 13:06:24,844 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-06-05 13:06:24,844 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 13:06:24,844 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 13:06:24,844 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 13:06:24,844 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 13:06:24,844 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 13:06:24,845 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 13:06:24,845 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 13:06:24,845 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 13:06:24,845 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-06-05 13:06:24,846 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 32 transitions, 181 flow [2021-06-05 13:07:56,842 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 137780 states, 137759 states have (on average 6.5724852822683095) internal successors, (905419), 137779 states have internal predecessors, (905419), 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) [2021-06-05 13:07:57,024 INFO L276 IsEmpty]: Start isEmpty. Operand has 137780 states, 137759 states have (on average 6.5724852822683095) internal successors, (905419), 137779 states have internal predecessors, (905419), 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) [2021-06-05 13:07:57,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-06-05 13:07:57,031 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:07:57,031 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:07:57,031 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-05 13:07:57,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:07:57,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1814808561, now seen corresponding path program 1 times [2021-06-05 13:07:57,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:07:57,032 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051220602] [2021-06-05 13:07:57,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:07:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 13:07:57,036 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 13:07:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 13:07:57,038 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 13:07:57,040 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-05 13:07:57,040 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-06-05 13:07:57,040 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-05 13:07:57,040 INFO L315 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2021-06-05 13:07:57,040 WARN L242 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-05 13:07:57,040 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2021-06-05 13:07:57,053 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 13:07:57,053 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 13:07:57,053 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 13:07:57,054 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 13:07:57,054 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 13:07:57,054 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 13:07:57,054 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 13:07:57,054 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 13:07:57,054 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 13:07:57,054 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 13:07:57,055 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 35 transitions, 210 flow Received shutdown request... [2021-06-05 13:18:38,148 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-05 13:18:38,153 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was TIMEOUT (1/2) [2021-06-05 13:18:38,153 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 13:18:38,154 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 13:18:38,154 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 13:18:38,154 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 13:18:38,154 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 13:18:38,154 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 13:18:38,154 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 13:18:38,154 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 13:18:38,154 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-06-05 13:18:38,155 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 35 transitions, 210 flow [2021-06-05 13:18:38,155 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-05 13:18:38,155 INFO L315 ceAbstractionStarter]: Result for error location InUseError was TIMEOUT (2/2) [2021-06-05 13:18:38,156 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 10 thread instances [2021-06-05 13:18:38,160 WARN L196 ceAbstractionStarter]: Timeout [2021-06-05 13:18:38,160 INFO L202 PluginConnector]: Adding new model fork_loop_noop.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 01:18:38 BasicIcfg [2021-06-05 13:18:38,160 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 13:18:38,162 INFO L168 Benchmark]: Toolchain (without parser) took 869807.75 ms. Allocated memory was 373.3 MB in the beginning and 5.7 GB in the end (delta: 5.3 GB). Free memory was 352.8 MB in the beginning and 3.2 GB in the end (delta: -2.8 GB). Peak memory consumption was 2.5 GB. Max. memory is 16.0 GB. [2021-06-05 13:18:38,162 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.14 ms. Allocated memory is still 373.3 MB. Free memory was 353.8 MB in the beginning and 353.7 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 13:18:38,162 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.98 ms. Allocated memory is still 373.3 MB. Free memory was 352.7 MB in the beginning and 351.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 13:18:38,163 INFO L168 Benchmark]: Boogie Preprocessor took 11.43 ms. Allocated memory is still 373.3 MB. Free memory was 351.2 MB in the beginning and 350.3 MB in the end (delta: 914.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 13:18:38,163 INFO L168 Benchmark]: RCFGBuilder took 201.51 ms. Allocated memory is still 373.3 MB. Free memory was 350.3 MB in the beginning and 342.1 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-06-05 13:18:38,163 INFO L168 Benchmark]: TraceAbstraction took 869552.97 ms. Allocated memory was 373.3 MB in the beginning and 5.7 GB in the end (delta: 5.3 GB). Free memory was 341.6 MB in the beginning and 3.2 GB in the end (delta: -2.8 GB). Peak memory consumption was 2.5 GB. Max. memory is 16.0 GB. [2021-06-05 13:18:38,165 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 373.3 MB. Free memory was 353.8 MB in the beginning and 353.7 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 26.98 ms. Allocated memory is still 373.3 MB. Free memory was 352.7 MB in the beginning and 351.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 11.43 ms. Allocated memory is still 373.3 MB. Free memory was 351.2 MB in the beginning and 350.3 MB in the end (delta: 914.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 201.51 ms. Allocated memory is still 373.3 MB. Free memory was 350.3 MB in the beginning and 342.1 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 869552.97 ms. Allocated memory was 373.3 MB in the beginning and 5.7 GB in the end (delta: 5.3 GB). Free memory was 341.6 MB in the beginning and 3.2 GB in the end (delta: -2.8 GB). Peak memory consumption was 2.5 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 30]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing initial abstraction,while PetriNet2FiniteAutomaton was constructing automaton for Petri net that has has 56 places, 35 transitions, 210 flow. Already constructed 356339 states. Currently 39367 states in worklist.. - TimeoutResultAtElement [Line: 26]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing initial abstraction,while PetriNet2FiniteAutomaton was constructing automaton for Petri net that has has 56 places, 35 transitions, 210 flow. Already constructed 2 states. Currently 1 states in worklist.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 12 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 219.2ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 5.7ms, AutomataDifference: 38.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 14.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 6 SDtfs, 6 SDslu, 0 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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: 6.6ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2.7ms SsaConstructionTime, 26.4ms SatisfiabilityAnalysisTime, 43.0ms InterpolantComputationTime, 2 NumberOfCodeBlocks, 2 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 1 ConstructedInterpolants, 0 QuantifiedInterpolants, 3 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 64.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 1.1ms, AutomataDifference: 10.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 9 SDtfs, 9 SDslu, 0 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred 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: 0.4ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2.3ms SsaConstructionTime, 1.7ms SatisfiabilityAnalysisTime, 22.6ms InterpolantComputationTime, 2 NumberOfCodeBlocks, 2 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 1 ConstructedInterpolants, 0 QuantifiedInterpolants, 3 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 - StatisticsResult: Ultimate Automizer benchmark data with 3 thread instances CFG has 5 procedures, 18 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 84.3ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 29.6ms, AutomataDifference: 28.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 12 SDtfs, 12 SDslu, 0 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=188occurred 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: 0.4ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3ms SsaConstructionTime, 0.8ms SatisfiabilityAnalysisTime, 7.1ms InterpolantComputationTime, 2 NumberOfCodeBlocks, 2 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 1 ConstructedInterpolants, 0 QuantifiedInterpolants, 3 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 - StatisticsResult: Ultimate Automizer benchmark data with 4 thread instances CFG has 6 procedures, 21 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 95.4ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 1.6ms, AutomataDifference: 28.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 38.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 15 SDtfs, 15 SDslu, 0 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=566occurred 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: 0.5ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2.3ms SsaConstructionTime, 0.8ms SatisfiabilityAnalysisTime, 11.6ms InterpolantComputationTime, 2 NumberOfCodeBlocks, 2 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 1 ConstructedInterpolants, 0 QuantifiedInterpolants, 3 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 - StatisticsResult: Ultimate Automizer benchmark data with 5 thread instances CFG has 7 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 149.2ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 5.1ms, AutomataDifference: 37.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 85.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 18 SDtfs, 18 SDslu, 0 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1700occurred 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: 0.7ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5ms SsaConstructionTime, 1.8ms SatisfiabilityAnalysisTime, 8.8ms InterpolantComputationTime, 2 NumberOfCodeBlocks, 2 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 1 ConstructedInterpolants, 0 QuantifiedInterpolants, 3 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 - StatisticsResult: Ultimate Automizer benchmark data with 6 thread instances CFG has 8 procedures, 27 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 442.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 14.8ms, AutomataDifference: 73.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 326.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 21 SDtfs, 21 SDslu, 0 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5102occurred 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: 0.5ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7ms SsaConstructionTime, 1.1ms SatisfiabilityAnalysisTime, 16.4ms InterpolantComputationTime, 2 NumberOfCodeBlocks, 2 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 1 ConstructedInterpolants, 0 QuantifiedInterpolants, 3 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 - StatisticsResult: Ultimate Automizer benchmark data with 7 thread instances CFG has 9 procedures, 30 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1773.9ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 34.4ms, AutomataDifference: 316.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1393.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 24 SDtfs, 24 SDslu, 0 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=15308occurred 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: 0.4ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9ms SsaConstructionTime, 1.9ms SatisfiabilityAnalysisTime, 14.0ms InterpolantComputationTime, 2 NumberOfCodeBlocks, 2 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 1 ConstructedInterpolants, 0 QuantifiedInterpolants, 3 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 - StatisticsResult: Ultimate Automizer benchmark data with 8 thread instances CFG has 10 procedures, 33 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13750.3ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 71.9ms, AutomataDifference: 989.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12676.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 27 SDtfs, 27 SDslu, 0 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=45926occurred 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: 0.4ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2ms SsaConstructionTime, 0.6ms SatisfiabilityAnalysisTime, 4.6ms InterpolantComputationTime, 2 NumberOfCodeBlocks, 2 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 1 ConstructedInterpolants, 0 QuantifiedInterpolants, 3 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 - StatisticsResult: Ultimate Automizer benchmark data with 9 thread instances CFG has 11 procedures, 36 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 105312.3ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 242.6ms, AutomataDifference: 2065.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 102700.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 30 SDtfs, 30 SDslu, 0 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=137780occurred 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: 0.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3ms SsaConstructionTime, 0.7ms SatisfiabilityAnalysisTime, 297.8ms InterpolantComputationTime, 2 NumberOfCodeBlocks, 2 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 1 ConstructedInterpolants, 0 QuantifiedInterpolants, 3 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 - StatisticsResult: Ultimate Automizer benchmark data with 10 thread instances CFG has 12 procedures, 39 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 641098.9ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 641093.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, 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: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 12 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 41.9ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.4ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 0, 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: 1.0ms SsaConstructionTime, 2.2ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 4 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 16.0ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.6ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=0, InterpolantAutomatonStates: 0, 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: 0.3ms SsaConstructionTime, 1.1ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 3 thread instances CFG has 5 procedures, 18 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 30.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 1.2ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=188occurred in iteration=0, InterpolantAutomatonStates: 0, 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: 0.4ms SsaConstructionTime, 6.3ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 4 thread instances CFG has 6 procedures, 21 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 46.6ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 2.4ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 22.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=566occurred in iteration=0, InterpolantAutomatonStates: 0, 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: 0.3ms SsaConstructionTime, 6.5ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 5 thread instances CFG has 7 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 76.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 8.1ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 58.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1700occurred in iteration=0, InterpolantAutomatonStates: 0, 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: 1.1ms SsaConstructionTime, 1.2ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 6 thread instances CFG has 8 procedures, 27 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 326.5ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 16.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 283.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5102occurred in iteration=0, InterpolantAutomatonStates: 0, 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: 0.9ms SsaConstructionTime, 6.6ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 7 thread instances CFG has 9 procedures, 30 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1290.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 23.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1258.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=15308occurred in iteration=0, InterpolantAutomatonStates: 0, 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: 0.3ms SsaConstructionTime, 1.4ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 8 thread instances CFG has 10 procedures, 33 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12285.3ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 76.8ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12188.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=45926occurred in iteration=0, InterpolantAutomatonStates: 0, 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: 0.4ms SsaConstructionTime, 1.9ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 9 thread instances CFG has 11 procedures, 36 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 92195.9ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 188.5ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 91997.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=137780occurred in iteration=0, InterpolantAutomatonStates: 0, 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: 0.4ms SsaConstructionTime, 2.0ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 10 thread instances CFG has 12 procedures, 39 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 1.5ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, 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: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown