/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-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/cutoff_test.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-98196c323137eee61a7c1131837b356358d783d4-98196c3 [2021-06-16 16:33:02,493 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-16 16:33:02,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-16 16:33:02,520 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-16 16:33:02,570 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-Delay.epf [2021-06-16 16:33:02,611 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-16 16:33:02,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-16 16:33:02,614 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-16 16:33:02,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-16 16:33:02,615 INFO L138 SettingsManager]: * Use SBE=true [2021-06-16 16:33:02,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-16 16:33:02,615 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-16 16:33:02,615 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-16 16:33:02,615 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-16 16:33:02,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-16 16:33:02,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-16 16:33:02,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-16 16:33:02,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-16 16:33:02,617 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-16 16:33:02,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-16 16:33:02,617 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-16 16:33:02,617 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-16 16:33:02,617 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-16 16:33:02,618 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-16 16:33:02,618 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-16 16:33:02,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-16 16:33:02,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-16 16:33:02,618 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-16 16:33:02,618 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-16 16:33:02,618 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-16 16:33:02,619 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-16 16:33:02,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-16 16:33:02,619 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-16 16:33:02,619 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-16 16:33:02,619 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-16 16:33:02,619 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-16 16:33:02,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-16 16:33:02,923 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-16 16:33:02,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-16 16:33:02,926 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-16 16:33:02,927 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-16 16:33:02,928 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/cutoff_test.bpl [2021-06-16 16:33:02,928 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/cutoff_test.bpl' [2021-06-16 16:33:02,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-16 16:33:02,955 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-16 16:33:02,956 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-16 16:33:02,956 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-16 16:33:02,956 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-16 16:33:02,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 04:33:02" (1/1) ... [2021-06-16 16:33:02,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 04:33:02" (1/1) ... [2021-06-16 16:33:02,976 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-16 16:33:02,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-16 16:33:02,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-16 16:33:02,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-16 16:33:02,983 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 04:33:02" (1/1) ... [2021-06-16 16:33:02,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 04:33:02" (1/1) ... [2021-06-16 16:33:02,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 04:33:02" (1/1) ... [2021-06-16 16:33:02,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 04:33:02" (1/1) ... [2021-06-16 16:33:02,986 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 04:33:02" (1/1) ... [2021-06-16 16:33:02,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 04:33:02" (1/1) ... [2021-06-16 16:33:02,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 04:33:02" (1/1) ... [2021-06-16 16:33:02,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-16 16:33:02,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-16 16:33:02,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-16 16:33:02,990 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-16 16:33:02,991 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 04:33:02" (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 [2021-06-16 16:33:03,048 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-16 16:33:03,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-16 16:33:03,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-16 16:33:03,049 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread1 given in one single declaration [2021-06-16 16:33:03,049 INFO L130 BoogieDeclarations]: Found specification of procedure Thread1 [2021-06-16 16:33:03,049 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread1 [2021-06-16 16:33:03,050 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-16 16:33:03,175 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-16 16:33:03,175 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-06-16 16:33:03,177 INFO L202 PluginConnector]: Adding new model cutoff_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 04:33:03 BoogieIcfgContainer [2021-06-16 16:33:03,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-16 16:33:03,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-16 16:33:03,180 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-16 16:33:03,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-16 16:33:03,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 04:33:02" (1/2) ... [2021-06-16 16:33:03,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a831 and model type cutoff_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.06 04:33:03, skipping insertion in model container [2021-06-16 16:33:03,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 04:33:03" (2/2) ... [2021-06-16 16:33:03,185 INFO L111 eAbstractionObserver]: Analyzing ICFG cutoff_test.bpl [2021-06-16 16:33:03,192 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-16 16:33:03,193 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-16 16:33:03,197 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-16 16:33:03,198 INFO L470 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-16 16:33:03,230 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-06-16 16:33:03,250 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-16 16:33:03,281 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-16 16:33:03,282 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-16 16:33:03,282 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-16 16:33:03,282 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-16 16:33:03,282 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-16 16:33:03,282 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-16 16:33:03,282 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-16 16:33:03,282 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-16 16:33:03,367 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 16 states have (on average 1.875) internal successors, (30), 19 states have internal predecessors, (30), 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) [2021-06-16 16:33:03,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-06-16 16:33:03,376 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 16:33:03,377 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 16:33:03,377 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 16:33:03,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 16:33:03,382 INFO L82 PathProgramCache]: Analyzing trace with hash 563187945, now seen corresponding path program 1 times [2021-06-16 16:33:03,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 16:33:03,391 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160941512] [2021-06-16 16:33:03,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 16:33:03,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 16:33:03,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 16:33:03,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 16:33:03,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 16:33:03,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 16:33:03,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 16:33:03,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 16:33:03,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 16:33:03,516 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 16:33:03,516 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160941512] [2021-06-16 16:33:03,517 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160941512] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 16:33:03,517 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 16:33:03,517 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-16 16:33:03,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054467762] [2021-06-16 16:33:03,529 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-16 16:33:03,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 16:33:03,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-16 16:33:03,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 16:33:03,544 INFO L87 Difference]: Start difference. First operand has 20 states, 16 states have (on average 1.875) internal successors, (30), 19 states have internal predecessors, (30), 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) [2021-06-16 16:33:03,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 16:33:03,603 INFO L93 Difference]: Finished difference Result 27 states and 36 transitions. [2021-06-16 16:33:03,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-16 16:33:03,605 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 [2021-06-16 16:33:03,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 16:33:03,616 INFO L225 Difference]: With dead ends: 27 [2021-06-16 16:33:03,616 INFO L226 Difference]: Without dead ends: 11 [2021-06-16 16:33:03,617 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 16:33:03,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-06-16 16:33:03,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-06-16 16:33:03,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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) [2021-06-16 16:33:03,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2021-06-16 16:33:03,655 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2021-06-16 16:33:03,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 16:33:03,660 INFO L482 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2021-06-16 16:33:03,660 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) [2021-06-16 16:33:03,660 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2021-06-16 16:33:03,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-06-16 16:33:03,661 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 16:33:03,661 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 16:33:03,661 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-16 16:33:03,661 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 16:33:03,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 16:33:03,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1510774450, now seen corresponding path program 1 times [2021-06-16 16:33:03,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 16:33:03,662 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033430386] [2021-06-16 16:33:03,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 16:33:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-16 16:33:03,668 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-16 16:33:03,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-16 16:33:03,671 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-16 16:33:03,694 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-16 16:33:03,694 INFO L573 BasicCegarLoop]: Counterexample might be feasible [2021-06-16 16:33:03,695 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-16 16:33:03,698 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-16 16:33:03,704 INFO L202 PluginConnector]: Adding new model cutoff_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.06 04:33:03 BasicIcfg [2021-06-16 16:33:03,704 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-16 16:33:03,705 INFO L168 Benchmark]: Toolchain (without parser) took 749.96 ms. Allocated memory is still 200.3 MB. Free memory was 179.8 MB in the beginning and 175.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.4 MB. Max. memory is 8.0 GB. [2021-06-16 16:33:03,706 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.47 ms. Allocated memory is still 200.3 MB. Free memory is still 180.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-16 16:33:03,707 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.04 ms. Allocated memory is still 200.3 MB. Free memory was 179.7 MB in the beginning and 178.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-16 16:33:03,707 INFO L168 Benchmark]: Boogie Preprocessor took 12.63 ms. Allocated memory is still 200.3 MB. Free memory was 178.2 MB in the beginning and 177.4 MB in the end (delta: 833.7 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-16 16:33:03,708 INFO L168 Benchmark]: RCFGBuilder took 187.50 ms. Allocated memory is still 200.3 MB. Free memory was 177.3 MB in the beginning and 168.7 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2021-06-16 16:33:03,711 INFO L168 Benchmark]: TraceAbstraction took 524.10 ms. Allocated memory is still 200.3 MB. Free memory was 168.3 MB in the beginning and 175.8 MB in the end (delta: -7.6 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-06-16 16:33:03,713 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 0.47 ms. Allocated memory is still 200.3 MB. Free memory is still 180.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 20.04 ms. Allocated memory is still 200.3 MB. Free memory was 179.7 MB in the beginning and 178.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 12.63 ms. Allocated memory is still 200.3 MB. Free memory was 178.2 MB in the beginning and 177.4 MB in the end (delta: 833.7 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 187.50 ms. Allocated memory is still 200.3 MB. Free memory was 177.3 MB in the beginning and 168.7 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 524.10 ms. Allocated memory is still 200.3 MB. Free memory was 168.3 MB in the beginning and 175.8 MB in the end (delta: -7.6 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 24, positive: 12, positive conditional: 12, positive unconditional: 0, negative: 12, negative conditional: 12, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 14, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 14, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 14, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 23, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 14, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 14, unknown conditional: 0, unknown unconditional: 14] , Statistics on independence cache: Total cache size (in pairs): 14, Positive cache size: 12, Positive conditional cache size: 0, Positive unconditional cache size: 12, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Independence queries for same thread: 10 - 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: 416.4ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 11.7ms, AutomataDifference: 86.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 82.0ms, PartialOrderReductionTime: 72.5ms, HoareTripleCheckerStatistics: 18 SDtfs, 7 SDslu, 9 SDs, 0 SdLazy, 8 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 40.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.1ms 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: 28.0ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 4.1ms SsaConstructionTime, 18.9ms SatisfiabilityAnalysisTime, 58.1ms 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...