/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-POR-Persistent-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr15.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-8b99979fc9bd30b823d307a67cb055caa4790482-8b99979 [2021-06-30 17:22:29,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-30 17:22:29,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-30 17:22:29,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-30 17:22:30,023 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-POR-Persistent-NoLbe.epf [2021-06-30 17:22:30,064 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-30 17:22:30,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-30 17:22:30,064 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-30 17:22:30,064 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-30 17:22:30,065 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-30 17:22:30,065 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-30 17:22:30,066 INFO L138 SettingsManager]: * Use SBE=true [2021-06-30 17:22:30,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-30 17:22:30,066 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-30 17:22:30,066 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-30 17:22:30,066 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-30 17:22:30,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-30 17:22:30,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-30 17:22:30,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-30 17:22:30,067 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-30 17:22:30,067 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-30 17:22:30,067 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-30 17:22:30,067 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-30 17:22:30,067 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-30 17:22:30,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-30 17:22:30,068 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-30 17:22:30,068 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-30 17:22:30,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-30 17:22:30,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-30 17:22:30,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-30 17:22:30,068 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-30 17:22:30,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-30 17:22:30,069 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-30 17:22:30,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-30 17:22:30,069 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-30 17:22:30,069 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-30 17:22:30,069 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-30 17:22:30,069 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SETS [2021-06-30 17:22:30,070 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-30 17:22:30,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-30 17:22:30,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-30 17:22:30,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-30 17:22:30,371 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-30 17:22:30,372 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-30 17:22:30,373 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr15.bpl [2021-06-30 17:22:30,373 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr15.bpl' [2021-06-30 17:22:30,404 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-30 17:22:30,406 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-30 17:22:30,406 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-30 17:22:30,407 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-30 17:22:30,407 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-30 17:22:30,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "incr-decr15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 05:22:30" (1/1) ... [2021-06-30 17:22:30,426 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "incr-decr15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 05:22:30" (1/1) ... [2021-06-30 17:22:30,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-30 17:22:30,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-30 17:22:30,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-30 17:22:30,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-30 17:22:30,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "incr-decr15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 05:22:30" (1/1) ... [2021-06-30 17:22:30,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "incr-decr15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 05:22:30" (1/1) ... [2021-06-30 17:22:30,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "incr-decr15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 05:22:30" (1/1) ... [2021-06-30 17:22:30,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "incr-decr15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 05:22:30" (1/1) ... [2021-06-30 17:22:30,445 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "incr-decr15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 05:22:30" (1/1) ... [2021-06-30 17:22:30,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "incr-decr15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 05:22:30" (1/1) ... [2021-06-30 17:22:30,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "incr-decr15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 05:22:30" (1/1) ... [2021-06-30 17:22:30,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-30 17:22:30,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-30 17:22:30,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-30 17:22:30,450 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-30 17:22:30,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "incr-decr15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 05:22:30" (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 [2021-06-30 17:22:30,522 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-30 17:22:30,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-30 17:22:30,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-30 17:22:30,522 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread given in one single declaration [2021-06-30 17:22:30,522 INFO L130 BoogieDeclarations]: Found specification of procedure Thread [2021-06-30 17:22:30,522 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread [2021-06-30 17:22:30,523 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-30 17:22:30,715 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-30 17:22:30,715 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-06-30 17:22:30,716 INFO L202 PluginConnector]: Adding new model incr-decr15.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.06 05:22:30 BoogieIcfgContainer [2021-06-30 17:22:30,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-30 17:22:30,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-30 17:22:30,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-30 17:22:30,720 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-30 17:22:30,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "incr-decr15.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 05:22:30" (1/2) ... [2021-06-30 17:22:30,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e71a320 and model type incr-decr15.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.06 05:22:30, skipping insertion in model container [2021-06-30 17:22:30,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "incr-decr15.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.06 05:22:30" (2/2) ... [2021-06-30 17:22:30,722 INFO L111 eAbstractionObserver]: Analyzing ICFG incr-decr15.bpl [2021-06-30 17:22:30,735 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-30 17:22:30,736 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-30 17:22:30,736 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-30 17:22:30,738 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-30 17:22:31,102 INFO L149 ThreadInstanceAdder]: Constructed 15 joinOtherThreadTransitions. [2021-06-30 17:22:31,134 INFO L255 AbstractCegarLoop]: Starting to check reachability of 16 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-30 17:22:31,193 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-30 17:22:31,193 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-30 17:22:31,193 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-30 17:22:31,193 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-30 17:22:31,193 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-30 17:22:31,193 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-30 17:22:31,194 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-30 17:22:31,194 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-30 17:22:32,480 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-30 17:22:32,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 17:22:32,487 INFO L82 PathProgramCache]: Analyzing trace with hash -301703764, now seen corresponding path program 1 times [2021-06-30 17:22:32,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 17:22:32,495 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877902026] [2021-06-30 17:22:32,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 17:22:32,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 17:22:33,066 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-30 17:22:33,067 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 17:22:33,067 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877902026] [2021-06-30 17:22:33,067 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877902026] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-30 17:22:33,068 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069587109] [2021-06-30 17:22:33,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-30 17:22:33,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 17:22:33,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 63 conjunts are in the unsatisfiable core [2021-06-30 17:22:33,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-30 17:22:33,631 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-30 17:22:33,632 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069587109] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-30 17:22:33,632 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-30 17:22:33,632 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2021-06-30 17:22:33,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721165649] [2021-06-30 17:22:33,641 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-30 17:22:33,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 17:22:33,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-30 17:22:33,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-06-30 17:22:33,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-30 17:22:33,651 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-30 17:22:33,652 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 4.529411764705882) internal successors, (77), 17 states have internal predecessors, (77), 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) [2021-06-30 17:22:33,652 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown