/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-decr19.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-8b99979fc9bd30b823d307a67cb055caa4790482-8b99979 [2021-06-30 17:22:43,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-30 17:22:43,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-30 17:22:43,503 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-30 17:22:43,548 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 17:22:43,578 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-30 17:22:43,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-30 17:22:43,578 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-30 17:22:43,578 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-30 17:22:43,580 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-30 17:22:43,580 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-30 17:22:43,581 INFO L138 SettingsManager]: * Use SBE=true [2021-06-30 17:22:43,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-30 17:22:43,581 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-30 17:22:43,581 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-30 17:22:43,582 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-30 17:22:43,582 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-30 17:22:43,582 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-30 17:22:43,582 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-30 17:22:43,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-30 17:22:43,582 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-30 17:22:43,582 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-30 17:22:43,582 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-30 17:22:43,583 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-30 17:22:43,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-30 17:22:43,583 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-30 17:22:43,583 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-30 17:22:43,583 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-30 17:22:43,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-30 17:22:43,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-30 17:22:43,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-30 17:22:43,583 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-30 17:22:43,584 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-30 17:22:43,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-30 17:22:43,584 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-30 17:22:43,584 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-30 17:22:43,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-30 17:22:43,584 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SETS [2021-06-30 17:22:43,584 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-30 17:22:43,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-30 17:22:43,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-30 17:22:43,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-30 17:22:43,902 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-30 17:22:43,903 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-30 17:22:43,904 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr19.bpl [2021-06-30 17:22:43,904 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr19.bpl' [2021-06-30 17:22:43,923 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-30 17:22:43,924 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-30 17:22:43,926 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-30 17:22:43,926 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-30 17:22:43,926 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-30 17:22:43,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "incr-decr19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 05:22:43" (1/1) ... [2021-06-30 17:22:43,940 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "incr-decr19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 05:22:43" (1/1) ... [2021-06-30 17:22:43,946 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-30 17:22:43,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-30 17:22:43,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-30 17:22:43,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-30 17:22:43,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "incr-decr19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 05:22:43" (1/1) ... [2021-06-30 17:22:43,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "incr-decr19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 05:22:43" (1/1) ... [2021-06-30 17:22:43,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "incr-decr19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 05:22:43" (1/1) ... [2021-06-30 17:22:43,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "incr-decr19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 05:22:43" (1/1) ... [2021-06-30 17:22:43,959 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "incr-decr19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 05:22:43" (1/1) ... [2021-06-30 17:22:43,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "incr-decr19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 05:22:43" (1/1) ... [2021-06-30 17:22:43,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "incr-decr19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 05:22:43" (1/1) ... [2021-06-30 17:22:43,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-30 17:22:43,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-30 17:22:43,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-30 17:22:43,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-30 17:22:43,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "incr-decr19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 05:22:43" (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 17:22:44,033 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-30 17:22:44,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-30 17:22:44,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-30 17:22:44,033 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread given in one single declaration [2021-06-30 17:22:44,033 INFO L130 BoogieDeclarations]: Found specification of procedure Thread [2021-06-30 17:22:44,033 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread [2021-06-30 17:22:44,034 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 17:22:44,191 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-30 17:22:44,192 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-06-30 17:22:44,193 INFO L202 PluginConnector]: Adding new model incr-decr19.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.06 05:22:44 BoogieIcfgContainer [2021-06-30 17:22:44,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-30 17:22:44,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-30 17:22:44,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-30 17:22:44,196 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-30 17:22:44,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "incr-decr19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 05:22:43" (1/2) ... [2021-06-30 17:22:44,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72d3071 and model type incr-decr19.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.06 05:22:44, skipping insertion in model container [2021-06-30 17:22:44,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "incr-decr19.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.06 05:22:44" (2/2) ... [2021-06-30 17:22:44,197 INFO L111 eAbstractionObserver]: Analyzing ICFG incr-decr19.bpl [2021-06-30 17:22:44,212 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-30 17:22:44,212 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-30 17:22:44,212 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-30 17:22:44,213 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-30 17:22:44,578 INFO L149 ThreadInstanceAdder]: Constructed 19 joinOtherThreadTransitions. [2021-06-30 17:22:44,594 INFO L255 AbstractCegarLoop]: Starting to check reachability of 20 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 17:22:44,649 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-30 17:22:44,649 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-30 17:22:44,649 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-30 17:22:44,649 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-30 17:22:44,650 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-30 17:22:44,651 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-30 17:22:44,651 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-30 17:22:44,651 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-30 17:22:45,984 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr17INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr16INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr18INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-06-30 17:22:45,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 17:22:45,988 INFO L82 PathProgramCache]: Analyzing trace with hash -27817963, now seen corresponding path program 1 times [2021-06-30 17:22:45,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 17:22:45,993 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589831085] [2021-06-30 17:22:45,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 17:22:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 17:22:46,520 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-30 17:22:46,521 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 17:22:46,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589831085] [2021-06-30 17:22:46,521 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589831085] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-30 17:22:46,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804536902] [2021-06-30 17:22:46,522 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 17:22:46,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 17:22:46,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 79 conjunts are in the unsatisfiable core [2021-06-30 17:22:46,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-30 17:22:46,987 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-30 17:22:46,988 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804536902] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-30 17:22:46,988 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-30 17:22:46,988 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2021-06-30 17:22:46,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306361377] [2021-06-30 17:22:46,994 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-30 17:22:46,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 17:22:47,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-30 17:22:47,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2021-06-30 17:22:47,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-30 17:22:47,059 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-30 17:22:47,063 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 21 states have (on average 4.619047619047619) internal successors, (97), 21 states have internal predecessors, (97), 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 17:22:47,063 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