/usr/bin/java -Xmx16000000000 -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-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/ThreadIdTest-Unsafe.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 22:20:18,577 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 22:20:18,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 22:20:18,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 22:20:18,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 22:20:18,619 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 22:20:18,621 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 22:20:18,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 22:20:18,628 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 22:20:18,632 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 22:20:18,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 22:20:18,634 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 22:20:18,634 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 22:20:18,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 22:20:18,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 22:20:18,640 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 22:20:18,642 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 22:20:18,643 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 22:20:18,645 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 22:20:18,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 22:20:18,651 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 22:20:18,652 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 22:20:18,654 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 22:20:18,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 22:20:18,660 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 22:20:18,663 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 22:20:18,664 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 22:20:18,665 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 22:20:18,666 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 22:20:18,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 22:20:18,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 22:20:18,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 22:20:18,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 22:20:18,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 22:20:18,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 22:20:18,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 22:20:18,672 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-PN-SemanticLbe.epf [2021-03-24 22:20:18,706 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 22:20:18,706 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 22:20:18,710 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 22:20:18,710 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 22:20:18,710 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 22:20:18,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 22:20:18,710 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 22:20:18,711 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 22:20:18,711 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 22:20:18,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 22:20:18,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 22:20:18,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 22:20:18,712 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 22:20:18,712 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 22:20:18,712 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 22:20:18,713 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 22:20:18,713 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 22:20:18,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 22:20:18,713 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 22:20:18,713 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 22:20:18,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 22:20:18,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 22:20:18,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 22:20:18,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 22:20:18,714 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 22:20:18,714 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 22:20:18,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 22:20:18,715 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 22:20:18,715 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 22:20:19,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 22:20:19,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 22:20:19,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 22:20:19,057 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-24 22:20:19,060 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-24 22:20:19,061 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/ThreadIdTest-Unsafe.bpl [2021-03-24 22:20:19,062 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/ThreadIdTest-Unsafe.bpl' [2021-03-24 22:20:19,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 22:20:19,098 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-24 22:20:19,099 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 22:20:19,099 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 22:20:19,099 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 22:20:19,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:20:19" (1/1) ... [2021-03-24 22:20:19,120 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:20:19" (1/1) ... [2021-03-24 22:20:19,127 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 22:20:19,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 22:20:19,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 22:20:19,130 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 22:20:19,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:20:19" (1/1) ... [2021-03-24 22:20:19,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:20:19" (1/1) ... [2021-03-24 22:20:19,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:20:19" (1/1) ... [2021-03-24 22:20:19,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:20:19" (1/1) ... [2021-03-24 22:20:19,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:20:19" (1/1) ... [2021-03-24 22:20:19,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:20:19" (1/1) ... [2021-03-24 22:20:19,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:20:19" (1/1) ... [2021-03-24 22:20:19,142 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 22:20:19,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 22:20:19,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 22:20:19,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 22:20:19,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:20:19" (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 [2021-03-24 22:20:19,204 INFO L130 BoogieDeclarations]: Found specification of procedure decrement [2021-03-24 22:20:19,204 INFO L138 BoogieDeclarations]: Found implementation of procedure decrement [2021-03-24 22:20:19,204 INFO L130 BoogieDeclarations]: Found specification of procedure increment [2021-03-24 22:20:19,205 INFO L138 BoogieDeclarations]: Found implementation of procedure increment [2021-03-24 22:20:19,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 22:20:19,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 22:20:19,206 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 22:20:19,307 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 22:20:19,307 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-24 22:20:19,309 INFO L202 PluginConnector]: Adding new model ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 10:20:19 BoogieIcfgContainer [2021-03-24 22:20:19,309 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 22:20:19,310 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 22:20:19,310 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 22:20:19,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 22:20:19,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 10:20:19" (1/2) ... [2021-03-24 22:20:19,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27cba45d and model type ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 10:20:19, skipping insertion in model container [2021-03-24 22:20:19,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 10:20:19" (2/2) ... [2021-03-24 22:20:19,315 INFO L111 eAbstractionObserver]: Analyzing ICFG ThreadIdTest-Unsafe.bpl [2021-03-24 22:20:19,320 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 22:20:19,323 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 22:20:19,323 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 22:20:19,341 WARN L313 ript$VariableManager]: TermVariabe decrementThread1of1ForFork1_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:20:19,342 WARN L313 ript$VariableManager]: TermVariabe decrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:20:19,342 WARN L313 ript$VariableManager]: TermVariabe decrementThread1of1ForFork1_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:20:19,342 WARN L313 ript$VariableManager]: TermVariabe decrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:20:19,343 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:20:19,343 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:20:19,343 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:20:19,343 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:20:19,345 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:20:19,349 WARN L313 ript$VariableManager]: TermVariabe decrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:20:19,356 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-03-24 22:20:19,372 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-24 22:20:19,390 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 22:20:19,390 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 22:20:19,390 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 22:20:19,390 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 22:20:19,390 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 22:20:19,390 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 22:20:19,390 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 22:20:19,391 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 22:20:19,398 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 14 transitions, 44 flow [2021-03-24 22:20:19,414 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-03-24 22:20:19,414 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-24 22:20:19,416 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24 conditions, 15 events. 0/15 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 17 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-24 22:20:19,416 INFO L82 GeneralOperation]: Start removeDead. Operand has 20 places, 14 transitions, 44 flow [2021-03-24 22:20:19,420 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 16 places, 10 transitions, 32 flow [2021-03-24 22:20:19,421 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 22:20:19,433 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 16 places, 10 transitions, 32 flow [2021-03-24 22:20:19,438 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 16 places, 10 transitions, 32 flow [2021-03-24 22:20:19,439 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 16 places, 10 transitions, 32 flow [2021-03-24 22:20:19,449 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-03-24 22:20:19,449 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-24 22:20:19,449 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20 conditions, 11 events. 0/11 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 8 event pairs, 0 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-24 22:20:19,459 INFO L142 LiptonReduction]: Number of co-enabled transitions 28 [2021-03-24 22:20:19,533 INFO L154 LiptonReduction]: Checked pairs total: 9 [2021-03-24 22:20:19,533 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-24 22:20:19,534 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 114 [2021-03-24 22:20:19,549 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-03-24 22:20:19,549 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-24 22:20:19,549 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:20:19,550 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-24 22:20:19,550 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 22:20:19,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:20:19,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1428659103, now seen corresponding path program 1 times [2021-03-24 22:20:19,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:20:19,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318690328] [2021-03-24 22:20:19,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:20:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 22:20:19,657 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 22:20:19,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 22:20:19,668 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 22:20:19,684 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-24 22:20:19,685 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-24 22:20:19,685 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 22:20:19,696 INFO L202 PluginConnector]: Adding new model ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 10:20:19 BasicIcfg [2021-03-24 22:20:19,696 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 22:20:19,699 INFO L168 Benchmark]: Toolchain (without parser) took 599.31 ms. Allocated memory is still 339.7 MB. Free memory was 319.6 MB in the beginning and 313.3 MB in the end (delta: 6.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-03-24 22:20:19,700 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 339.7 MB. Free memory was 320.6 MB in the beginning and 320.6 MB in the end (delta: 69.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 22:20:19,701 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.71 ms. Allocated memory is still 339.7 MB. Free memory was 319.6 MB in the beginning and 318.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 22:20:19,702 INFO L168 Benchmark]: Boogie Preprocessor took 13.32 ms. Allocated memory is still 339.7 MB. Free memory was 318.1 MB in the beginning and 317.3 MB in the end (delta: 818.7 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 22:20:19,703 INFO L168 Benchmark]: RCFGBuilder took 165.36 ms. Allocated memory is still 339.7 MB. Free memory was 317.2 MB in the beginning and 308.6 MB in the end (delta: 8.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-03-24 22:20:19,704 INFO L168 Benchmark]: TraceAbstraction took 385.75 ms. Allocated memory is still 339.7 MB. Free memory was 308.1 MB in the beginning and 313.3 MB in the end (delta: -5.2 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 22:20:19,711 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 0.15 ms. Allocated memory is still 339.7 MB. Free memory was 320.6 MB in the beginning and 320.6 MB in the end (delta: 69.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 28.71 ms. Allocated memory is still 339.7 MB. Free memory was 319.6 MB in the beginning and 318.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.32 ms. Allocated memory is still 339.7 MB. Free memory was 318.1 MB in the beginning and 317.3 MB in the end (delta: 818.7 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 165.36 ms. Allocated memory is still 339.7 MB. Free memory was 317.2 MB in the beginning and 308.6 MB in the end (delta: 8.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 385.75 ms. Allocated memory is still 339.7 MB. Free memory was 308.1 MB in the beginning and 313.3 MB in the end (delta: -5.2 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 95.0ms, 16 PlacesBefore, 14 PlacesAfterwards, 10 TransitionsBefore, 8 TransitionsAfterwards, 28 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 9 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 9, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 9, positive: 9, positive conditional: 0, positive unconditional: 9, 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: 9, positive: 9, positive conditional: 0, positive unconditional: 9, 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: 9, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 9, unknown conditional: 0, unknown unconditional: 9] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - CounterExampleResult [Line: 22]: assertion can be violated assertion can be violated We found a FailurePath: [L17] 0 x := 0; VAL [x=0] [L19] FORK 0 fork 1 increment(x); VAL [n=0, x=0] [L20] FORK 0 fork 2 decrement(x); VAL [n=0, n=0, x=0] [L37] 2 res := n - 1; [L21] JOIN 2 join 2 assign y; VAL [n=0, n=0, res=-1, x=0, y=-1] [L22] 0 assert y == 1; VAL [n=0, n=0, res=-1, x=0, y=-1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 299.4ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 155.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 6.1ms SsaConstructionTime, 19.8ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...