/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/cutoff_test.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-12 18:53:54,727 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-12 18:53:54,730 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-12 18:53:54,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-12 18:53:54,839 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-06-12 18:53:54,900 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-12 18:53:54,900 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-12 18:53:54,900 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-12 18:53:54,901 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-12 18:53:54,903 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-12 18:53:54,903 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-12 18:53:54,903 INFO L138 SettingsManager]: * Use SBE=true [2021-06-12 18:53:54,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-12 18:53:54,904 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-12 18:53:54,904 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-12 18:53:54,905 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-12 18:53:54,905 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-12 18:53:54,905 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-12 18:53:54,905 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-12 18:53:54,905 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-12 18:53:54,905 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-12 18:53:54,906 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-12 18:53:54,906 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-12 18:53:54,906 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-12 18:53:54,906 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-12 18:53:54,906 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-12 18:53:54,906 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-12 18:53:54,906 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-12 18:53:54,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-12 18:53:54,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-12 18:53:54,907 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-12 18:53:54,907 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-12 18:53:54,907 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-12 18:53:54,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-12 18:53:54,907 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-12 18:53:54,908 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-12 18:53:54,908 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-12 18:53:55,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-12 18:53:55,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-12 18:53:55,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-12 18:53:55,214 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-12 18:53:55,215 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-12 18:53:55,216 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/cutoff_test.bpl [2021-06-12 18:53:55,216 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/cutoff_test.bpl' [2021-06-12 18:53:55,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-12 18:53:55,243 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-12 18:53:55,243 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-12 18:53:55,244 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-12 18:53:55,244 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-12 18:53:55,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:53:55" (1/1) ... [2021-06-12 18:53:55,263 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:53:55" (1/1) ... [2021-06-12 18:53:55,270 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-12 18:53:55,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-12 18:53:55,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-12 18:53:55,273 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-12 18:53:55,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:53:55" (1/1) ... [2021-06-12 18:53:55,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:53:55" (1/1) ... [2021-06-12 18:53:55,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:53:55" (1/1) ... [2021-06-12 18:53:55,280 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:53:55" (1/1) ... [2021-06-12 18:53:55,282 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:53:55" (1/1) ... [2021-06-12 18:53:55,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:53:55" (1/1) ... [2021-06-12 18:53:55,285 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:53:55" (1/1) ... [2021-06-12 18:53:55,286 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-12 18:53:55,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-12 18:53:55,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-12 18:53:55,288 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-12 18:53:55,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:53:55" (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 [2021-06-12 18:53:55,367 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-12 18:53:55,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-12 18:53:55,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-12 18:53:55,368 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread1 given in one single declaration [2021-06-12 18:53:55,368 INFO L130 BoogieDeclarations]: Found specification of procedure Thread1 [2021-06-12 18:53:55,368 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread1 [2021-06-12 18:53:55,368 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-12 18:53:55,498 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-12 18:53:55,498 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-06-12 18:53:55,500 INFO L202 PluginConnector]: Adding new model cutoff_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 06:53:55 BoogieIcfgContainer [2021-06-12 18:53:55,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-12 18:53:55,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-12 18:53:55,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-12 18:53:55,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-12 18:53:55,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.06 06:53:55" (1/2) ... [2021-06-12 18:53:55,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45426ee8 and model type cutoff_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 06:53:55, skipping insertion in model container [2021-06-12 18:53:55,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 06:53:55" (2/2) ... [2021-06-12 18:53:55,507 INFO L111 eAbstractionObserver]: Analyzing ICFG cutoff_test.bpl [2021-06-12 18:53:55,516 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-12 18:53:55,516 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-12 18:53:55,516 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-12 18:53:55,518 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-12 18:53:55,551 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-06-12 18:53:55,570 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-12 18:53:55,587 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 18:53:55,587 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 18:53:55,587 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 18:53:55,587 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 18:53:55,587 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 18:53:55,588 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 18:53:55,588 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 18:53:55,588 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-12 18:53:55,598 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 16 places, 15 transitions, 38 flow [2021-06-12 18:53:55,606 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 20 states, 18 states have (on average 2.0) internal successors, (36), 19 states have internal predecessors, (36), 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) [2021-06-12 18:53:55,608 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 2.0) internal successors, (36), 19 states have internal predecessors, (36), 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) [2021-06-12 18:53:55,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-06-12 18:53:55,613 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:55,614 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:55,614 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:55,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:55,619 INFO L82 PathProgramCache]: Analyzing trace with hash 563505075, now seen corresponding path program 1 times [2021-06-12 18:53:55,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:55,626 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275976268] [2021-06-12 18:53:55,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:55,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 18:53:55,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 18:53:55,738 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 18:53:55,738 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275976268] [2021-06-12 18:53:55,739 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275976268] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 18:53:55,739 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 18:53:55,739 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-12 18:53:55,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134376823] [2021-06-12 18:53:55,744 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-12 18:53:55,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 18:53:55,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-12 18:53:55,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 18:53:55,757 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 2.0) internal successors, (36), 19 states have internal predecessors, (36), 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 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-06-12 18:53:55,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 18:53:55,782 INFO L93 Difference]: Finished difference Result 27 states and 43 transitions. [2021-06-12 18:53:55,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-12 18:53:55,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2021-06-12 18:53:55,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 18:53:55,789 INFO L225 Difference]: With dead ends: 27 [2021-06-12 18:53:55,790 INFO L226 Difference]: Without dead ends: 13 [2021-06-12 18:53:55,791 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 18:53:55,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-06-12 18:53:55,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-06-12 18:53:55,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 18:53:55,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2021-06-12 18:53:55,814 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 19 transitions. Word has length 8 [2021-06-12 18:53:55,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 18:53:55,815 INFO L482 AbstractCegarLoop]: Abstraction has 13 states and 19 transitions. [2021-06-12 18:53:55,815 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-06-12 18:53:55,815 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 19 transitions. [2021-06-12 18:53:55,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-06-12 18:53:55,815 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 18:53:55,816 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 18:53:55,816 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-12 18:53:55,816 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-12 18:53:55,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 18:53:55,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1064976978, now seen corresponding path program 1 times [2021-06-12 18:53:55,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 18:53:55,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249103426] [2021-06-12 18:53:55,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 18:53:55,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-12 18:53:55,836 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-12 18:53:55,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-12 18:53:55,841 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-12 18:53:55,851 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-12 18:53:55,851 INFO L573 BasicCegarLoop]: Counterexample might be feasible [2021-06-12 18:53:55,852 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-12 18:53:55,855 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-12 18:53:55,879 INFO L202 PluginConnector]: Adding new model cutoff_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.06 06:53:55 BasicIcfg [2021-06-12 18:53:55,879 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-12 18:53:55,881 INFO L168 Benchmark]: Toolchain (without parser) took 637.69 ms. Allocated memory is still 188.7 MB. Free memory was 169.2 MB in the beginning and 171.7 MB in the end (delta: -2.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-06-12 18:53:55,881 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.14 ms. Allocated memory is still 188.7 MB. Free memory is still 170.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-12 18:53:55,882 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.64 ms. Allocated memory is still 188.7 MB. Free memory was 169.1 MB in the beginning and 167.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-12 18:53:55,882 INFO L168 Benchmark]: Boogie Preprocessor took 14.91 ms. Allocated memory is still 188.7 MB. Free memory was 167.7 MB in the beginning and 166.8 MB in the end (delta: 891.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-06-12 18:53:55,883 INFO L168 Benchmark]: RCFGBuilder took 213.17 ms. Allocated memory is still 188.7 MB. Free memory was 166.7 MB in the beginning and 158.1 MB in the end (delta: 8.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-06-12 18:53:55,883 INFO L168 Benchmark]: TraceAbstraction took 377.48 ms. Allocated memory is still 188.7 MB. Free memory was 157.7 MB in the beginning and 171.7 MB in the end (delta: -13.9 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-06-12 18:53:55,886 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 188.7 MB. Free memory is still 170.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 26.64 ms. Allocated memory is still 188.7 MB. Free memory was 169.1 MB in the beginning and 167.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 14.91 ms. Allocated memory is still 188.7 MB. Free memory was 167.7 MB in the beginning and 166.8 MB in the end (delta: 891.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * RCFGBuilder took 213.17 ms. Allocated memory is still 188.7 MB. Free memory was 166.7 MB in the beginning and 158.1 MB in the end (delta: 8.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 377.48 ms. Allocated memory is still 188.7 MB. Free memory was 157.7 MB in the beginning and 171.7 MB in the end (delta: -13.9 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 26]: assertion can be violated assertion can be violated We found a FailurePath: [L20] FORK 0 fork 1 Thread1(); [L22] 0 x := 0; VAL [x=0] [L37] 1 x := x + 1; VAL [x=1] [L23] 0 x := 2 * x; VAL [x=2] [L25] JOIN 1 join 1; VAL [x=2] [L26] 0 assert x != 2; VAL [x=2] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 3 procedures, 19 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 268.1ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 6.7ms, AutomataDifference: 46.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 18.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 18 SDtfs, 7 SDslu, 9 SDs, 0 SdLazy, 8 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.3ms 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: 12.8ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 4.0ms SsaConstructionTime, 19.0ms SatisfiabilityAnalysisTime, 45.0ms InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...