/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/weaver-benchmarks/generated/chl/file-item-symm.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 22:55:27,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 22:55:27,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 22:55:27,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-09 22:55:27,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-09 22:55:27,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-09 22:55:27,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-09 22:55:27,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-09 22:55:27,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-09 22:55:27,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-09 22:55:27,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-09 22:55:27,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-09 22:55:27,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-09 22:55:27,964 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-09 22:55:27,965 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-09 22:55:27,966 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-09 22:55:27,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-09 22:55:27,969 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-09 22:55:27,971 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-09 22:55:27,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-09 22:55:27,976 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-09 22:55:27,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-09 22:55:27,978 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-09 22:55:27,980 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-09 22:55:27,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-09 22:55:27,985 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-09 22:55:27,985 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-09 22:55:27,986 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-09 22:55:27,986 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-09 22:55:27,987 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-09 22:55:27,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-09 22:55:27,987 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-09 22:55:27,989 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-09 22:55:27,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-09 22:55:27,990 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-09 22:55:27,990 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-09 22:55:27,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-09 22:55:27,990 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-09 22:55:27,991 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-09 22:55:27,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-09 22:55:27,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-09 22:55:27,992 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 [2021-07-09 22:55:28,021 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 22:55:28,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 22:55:28,024 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 22:55:28,024 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 22:55:28,024 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 22:55:28,024 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 22:55:28,024 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 22:55:28,025 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 22:55:28,025 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 22:55:28,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 22:55:28,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 22:55:28,026 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 22:55:28,026 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 22:55:28,026 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 22:55:28,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 22:55:28,026 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 22:55:28,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 22:55:28,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 22:55:28,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 22:55:28,027 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 22:55:28,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 22:55:28,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 22:55:28,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 22:55:28,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 22:55:28,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 22:55:28,027 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 22:55:28,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 22:55:28,028 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 22:55:28,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 22:55:28,028 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-07-09 22:55:28,028 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 22:55:28,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 22:55:28,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 22:55:28,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 22:55:28,289 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-09 22:55:28,291 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-09 22:55:28,292 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/file-item-symm.wvr.bpl [2021-07-09 22:55:28,292 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/file-item-symm.wvr.bpl' [2021-07-09 22:55:28,307 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 22:55:28,308 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-09 22:55:28,313 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 22:55:28,313 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 22:55:28,313 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 22:55:28,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 10:55:28" (1/1) ... [2021-07-09 22:55:28,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 10:55:28" (1/1) ... [2021-07-09 22:55:28,333 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 22:55:28,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 22:55:28,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 22:55:28,335 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 22:55:28,340 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 10:55:28" (1/1) ... [2021-07-09 22:55:28,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 10:55:28" (1/1) ... [2021-07-09 22:55:28,341 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 10:55:28" (1/1) ... [2021-07-09 22:55:28,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 10:55:28" (1/1) ... [2021-07-09 22:55:28,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 10:55:28" (1/1) ... [2021-07-09 22:55:28,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 10:55:28" (1/1) ... [2021-07-09 22:55:28,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 10:55:28" (1/1) ... [2021-07-09 22:55:28,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 22:55:28,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 22:55:28,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 22:55:28,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 22:55:28,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 10:55:28" (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 [2021-07-09 22:55:28,393 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-09 22:55:28,394 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-09 22:55:28,394 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-09 22:55:28,394 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-09 22:55:28,394 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-09 22:55:28,395 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-09 22:55:28,395 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-09 22:55:28,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 22:55:28,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 22:55:28,395 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-09 22:55:28,532 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 22:55:28,533 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-09 22:55:28,534 INFO L202 PluginConnector]: Adding new model file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 10:55:28 BoogieIcfgContainer [2021-07-09 22:55:28,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 22:55:28,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 22:55:28,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 22:55:28,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 22:55:28,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 10:55:28" (1/2) ... [2021-07-09 22:55:28,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6146d59c and model type file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 10:55:28, skipping insertion in model container [2021-07-09 22:55:28,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 10:55:28" (2/2) ... [2021-07-09 22:55:28,540 INFO L111 eAbstractionObserver]: Analyzing ICFG file-item-symm.wvr.bpl [2021-07-09 22:55:28,547 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 22:55:28,547 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 22:55:28,547 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 22:55:28,548 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 22:55:28,613 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-07-09 22:55:28,628 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-07-09 22:55:28,641 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 22:55:28,641 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 22:55:28,641 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 22:55:28,641 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 22:55:28,641 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 22:55:28,641 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 22:55:28,641 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 22:55:28,641 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 22:55:28,695 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 18 states have internal predecessors, (18), 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) [2021-07-09 22:55:28,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-07-09 22:55:28,703 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 22:55:28,704 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 22:55:28,704 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 22:55:28,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 22:55:28,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1258387451, now seen corresponding path program 1 times [2021-07-09 22:55:28,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 22:55:28,719 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407967519] [2021-07-09 22:55:28,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 22:55:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 22:55:28,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:55:28,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:55:29,035 INFO L142 QuantifierPusher]: treesize reduction 132, result has 40.5 percent of original size [2021-07-09 22:55:29,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-07-09 22:55:29,384 WARN L205 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2021-07-09 22:55:29,408 INFO L142 QuantifierPusher]: treesize reduction 137, result has 31.2 percent of original size [2021-07-09 22:55:29,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-07-09 22:55:29,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 22:55:29,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-09 22:55:29,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 22:55:29,442 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 22:55:29,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407967519] [2021-07-09 22:55:29,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407967519] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 22:55:29,443 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 22:55:29,443 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 22:55:29,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695349761] [2021-07-09 22:55:29,446 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-09 22:55:29,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 22:55:29,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-09 22:55:29,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-09 22:55:29,460 INFO L87 Difference]: Start difference. First operand has 19 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 18 states have internal predecessors, (18), 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 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-07-09 22:55:29,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 22:55:29,534 INFO L93 Difference]: Finished difference Result 17 states and 16 transitions. [2021-07-09 22:55:29,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-09 22:55:29,535 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2021-07-09 22:55:29,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 22:55:29,539 INFO L225 Difference]: With dead ends: 17 [2021-07-09 22:55:29,539 INFO L226 Difference]: Without dead ends: 0 [2021-07-09 22:55:29,540 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 421.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-09 22:55:29,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-09 22:55:29,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-09 22:55:29,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 22:55:29,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-09 22:55:29,560 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2021-07-09 22:55:29,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 22:55:29,560 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-09 22:55:29,561 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-07-09 22:55:29,561 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-09 22:55:29,561 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-09 22:55:29,562 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 22:55:29,563 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-09 22:55:29,564 INFO L202 PluginConnector]: Adding new model file-item-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.07 10:55:29 BasicIcfg [2021-07-09 22:55:29,564 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-09 22:55:29,566 INFO L168 Benchmark]: Toolchain (without parser) took 1257.14 ms. Allocated memory is still 242.2 MB. Free memory was 221.3 MB in the beginning and 223.4 MB in the end (delta: -2.1 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 22:55:29,567 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 242.2 MB. Free memory is still 222.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 22:55:29,567 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.95 ms. Allocated memory is still 242.2 MB. Free memory was 221.2 MB in the beginning and 219.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 22:55:29,583 INFO L168 Benchmark]: Boogie Preprocessor took 10.78 ms. Allocated memory is still 242.2 MB. Free memory was 219.8 MB in the beginning and 218.9 MB in the end (delta: 886.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 22:55:29,583 INFO L168 Benchmark]: RCFGBuilder took 188.91 ms. Allocated memory is still 242.2 MB. Free memory was 218.8 MB in the beginning and 209.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-07-09 22:55:29,583 INFO L168 Benchmark]: TraceAbstraction took 1028.07 ms. Allocated memory is still 242.2 MB. Free memory was 208.6 MB in the beginning and 223.4 MB in the end (delta: -14.9 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 22:55:29,585 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 0.13 ms. Allocated memory is still 242.2 MB. Free memory is still 222.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 20.95 ms. Allocated memory is still 242.2 MB. Free memory was 221.2 MB in the beginning and 219.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 10.78 ms. Allocated memory is still 242.2 MB. Free memory was 219.8 MB in the beginning and 218.9 MB in the end (delta: 886.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * RCFGBuilder took 188.91 ms. Allocated memory is still 242.2 MB. Free memory was 218.8 MB in the beginning and 209.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1028.07 ms. Allocated memory is still 242.2 MB. Free memory was 208.6 MB in the beginning and 223.4 MB in the end (delta: -14.9 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: 8, positive: 8, positive conditional: 8, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 8, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 8, unknown conditional: 0, unknown unconditional: 8] , Statistics on independence cache: Total cache size (in pairs): 8, Positive cache size: 8, Positive conditional cache size: 0, Positive unconditional cache size: 8, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Independence queries for same thread: 0 - PositiveResult [Line: 38]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 23 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 923.3ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 11.7ms, AutomataDifference: 92.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 50.6ms, PartialOrderReductionTime: 38.6ms, HoareTripleCheckerStatistics: 10 SDtfs, 4 SDslu, 8 SDs, 0 SdLazy, 4 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 421.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 6.0ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 9.8ms SsaConstructionTime, 62.5ms SatisfiabilityAnalysisTime, 610.6ms InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 203 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...