/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-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-incorrect07.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-1c3aa5735269c4be989a50fc1da9ea7b9492ef29-1c3aa57 [2021-07-01 09:56:06,659 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-01 09:56:06,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-01 09:56:06,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-01 09:56:06,705 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-01 09:56:06,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-01 09:56:06,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-01 09:56:06,714 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-01 09:56:06,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-01 09:56:06,720 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-01 09:56:06,721 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-01 09:56:06,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-01 09:56:06,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-01 09:56:06,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-01 09:56:06,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-01 09:56:06,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-01 09:56:06,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-01 09:56:06,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-01 09:56:06,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-01 09:56:06,751 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-01 09:56:06,752 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-01 09:56:06,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-01 09:56:06,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-01 09:56:06,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-01 09:56:06,764 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-01 09:56:06,772 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-01 09:56:06,773 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-01 09:56:06,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-01 09:56:06,774 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-NoLbe.epf [2021-07-01 09:56:06,812 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-01 09:56:06,812 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-01 09:56:06,815 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-01 09:56:06,815 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-01 09:56:06,815 INFO L138 SettingsManager]: * Use SBE=true [2021-07-01 09:56:06,815 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-01 09:56:06,815 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-01 09:56:06,815 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-01 09:56:06,815 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-01 09:56:06,816 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-01 09:56:06,816 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-01 09:56:06,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-01 09:56:06,817 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-01 09:56:06,817 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-01 09:56:06,817 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-01 09:56:06,817 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-01 09:56:06,817 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-01 09:56:06,817 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-01 09:56:06,818 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-01 09:56:06,818 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-01 09:56:06,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-01 09:56:06,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-01 09:56:06,818 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-01 09:56:06,819 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-01 09:56:06,819 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-01 09:56:06,819 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-01 09:56:06,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-01 09:56:06,819 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-01 09:56:06,819 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-07-01 09:56:06,819 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-01 09:56:07,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-01 09:56:07,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-01 09:56:07,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-01 09:56:07,177 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-01 09:56:07,178 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-01 09:56:07,179 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-incorrect07.bpl [2021-07-01 09:56:07,179 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-incorrect07.bpl' [2021-07-01 09:56:07,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-01 09:56:07,202 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-01 09:56:07,203 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-01 09:56:07,203 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-01 09:56:07,203 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-01 09:56:07,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-incorrect07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:56:07" (1/1) ... [2021-07-01 09:56:07,223 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-incorrect07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:56:07" (1/1) ... [2021-07-01 09:56:07,236 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-01 09:56:07,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-01 09:56:07,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-01 09:56:07,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-01 09:56:07,245 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-incorrect07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:56:07" (1/1) ... [2021-07-01 09:56:07,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-incorrect07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:56:07" (1/1) ... [2021-07-01 09:56:07,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-incorrect07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:56:07" (1/1) ... [2021-07-01 09:56:07,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-incorrect07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:56:07" (1/1) ... [2021-07-01 09:56:07,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-incorrect07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:56:07" (1/1) ... [2021-07-01 09:56:07,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-incorrect07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:56:07" (1/1) ... [2021-07-01 09:56:07,253 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-incorrect07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:56:07" (1/1) ... [2021-07-01 09:56:07,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-01 09:56:07,255 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-01 09:56:07,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-01 09:56:07,256 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-01 09:56:07,257 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-incorrect07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:56:07" (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 [2021-07-01 09:56:07,322 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThreadWithAssert given in one single declaration [2021-07-01 09:56:07,323 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThreadWithAssert [2021-07-01 09:56:07,323 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThreadWithAssert [2021-07-01 09:56:07,323 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-07-01 09:56:07,323 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-07-01 09:56:07,323 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-07-01 09:56:07,323 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-07-01 09:56:07,324 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-07-01 09:56:07,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-07-01 09:56:07,324 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-01 09:56:07,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-01 09:56:07,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-01 09:56:07,325 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-01 09:56:07,503 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-01 09:56:07,503 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-07-01 09:56:07,505 INFO L202 PluginConnector]: Adding new model bluetooth-incorrect07.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 09:56:07 BoogieIcfgContainer [2021-07-01 09:56:07,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-01 09:56:07,507 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-01 09:56:07,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-01 09:56:07,509 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-01 09:56:07,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-incorrect07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:56:07" (1/2) ... [2021-07-01 09:56:07,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13984dd5 and model type bluetooth-incorrect07.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 09:56:07, skipping insertion in model container [2021-07-01 09:56:07,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-incorrect07.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 09:56:07" (2/2) ... [2021-07-01 09:56:07,512 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth-incorrect07.bpl [2021-07-01 09:56:07,517 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-01 09:56:07,517 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-01 09:56:07,518 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-01 09:56:07,590 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-01 09:56:07,611 INFO L255 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-07-01 09:56:07,630 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-01 09:56:07,630 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-01 09:56:07,630 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-01 09:56:07,631 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-01 09:56:07,631 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-01 09:56:07,631 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-01 09:56:07,631 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-01 09:56:07,631 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-01 09:56:07,654 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 74 places, 56 transitions, 152 flow [2021-07-01 09:56:07,708 INFO L129 PetriNetUnfolder]: 7/48 cut-off events. [2021-07-01 09:56:07,708 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-07-01 09:56:07,712 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 48 events. 7/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 125 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2021-07-01 09:56:07,713 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 56 transitions, 152 flow [2021-07-01 09:56:07,715 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2021-07-01 09:56:07,716 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-07-01 09:56:07,716 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-07-01 09:56:07,720 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/2) [2021-07-01 09:56:07,723 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-01 09:56:07,737 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-01 09:56:07,737 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-01 09:56:07,737 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-01 09:56:07,737 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-01 09:56:07,737 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-01 09:56:07,737 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-01 09:56:07,737 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-01 09:56:07,737 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadWithAssertThread1of1ForFork1======== [2021-07-01 09:56:07,740 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 74 places, 56 transitions, 152 flow [2021-07-01 09:56:07,766 INFO L129 PetriNetUnfolder]: 7/48 cut-off events. [2021-07-01 09:56:07,766 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-07-01 09:56:07,769 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 48 events. 7/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 125 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2021-07-01 09:56:07,769 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 56 transitions, 152 flow [2021-07-01 09:56:07,774 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 48 transitions, 120 flow [2021-07-01 09:56:07,787 INFO L129 PetriNetUnfolder]: 2/24 cut-off events. [2021-07-01 09:56:07,788 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-07-01 09:56:07,788 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-07-01 09:56:07,789 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 09:56:07,789 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:56:07,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:56:07,793 INFO L82 PathProgramCache]: Analyzing trace with hash -927120616, now seen corresponding path program 1 times [2021-07-01 09:56:07,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:56:07,802 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952321665] [2021-07-01 09:56:07,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:56:07,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:56:07,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:56:07,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-01 09:56:07,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:56:07,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 09:56:07,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 09:56:07,919 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:56:07,920 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952321665] [2021-07-01 09:56:07,921 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952321665] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 09:56:07,922 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 09:56:07,922 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-01 09:56:07,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400978953] [2021-07-01 09:56:07,929 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-01 09:56:07,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:56:07,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-01 09:56:07,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-01 09:56:07,947 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 56 [2021-07-01 09:56:07,951 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 48 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2021-07-01 09:56:07,952 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-07-01 09:56:07,952 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 56 [2021-07-01 09:56:07,953 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-07-01 09:56:07,998 INFO L129 PetriNetUnfolder]: 8/56 cut-off events. [2021-07-01 09:56:07,998 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-07-01 09:56:07,999 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 56 events. 8/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 167 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 71. Up to 4 conditions per place. [2021-07-01 09:56:08,000 INFO L132 encePairwiseOnDemand]: 52/56 looper letters, 2 selfloop transitions, 3 changer transitions 0/49 dead transitions. [2021-07-01 09:56:08,000 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 49 transitions, 132 flow [2021-07-01 09:56:08,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 09:56:08,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-07-01 09:56:08,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 162 transitions. [2021-07-01 09:56:08,010 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9642857142857143 [2021-07-01 09:56:08,011 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 162 transitions. [2021-07-01 09:56:08,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 162 transitions. [2021-07-01 09:56:08,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-01 09:56:08,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 162 transitions. [2021-07-01 09:56:08,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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) [2021-07-01 09:56:08,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 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) [2021-07-01 09:56:08,020 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 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) [2021-07-01 09:56:08,021 INFO L185 Difference]: Start difference. First operand has 66 places, 48 transitions, 120 flow. Second operand 3 states and 162 transitions. [2021-07-01 09:56:08,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 49 transitions, 132 flow [2021-07-01 09:56:08,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 49 transitions, 124 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-07-01 09:56:08,027 INFO L241 Difference]: Finished difference. Result has 62 places, 49 transitions, 130 flow [2021-07-01 09:56:08,029 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=62, PETRI_TRANSITIONS=49} [2021-07-01 09:56:08,029 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, -4 predicate places. [2021-07-01 09:56:08,029 INFO L482 AbstractCegarLoop]: Abstraction has has 62 places, 49 transitions, 130 flow [2021-07-01 09:56:08,030 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2021-07-01 09:56:08,030 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-07-01 09:56:08,030 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 09:56:08,030 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-01 09:56:08,030 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:56:08,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:56:08,031 INFO L82 PathProgramCache]: Analyzing trace with hash 832878426, now seen corresponding path program 1 times [2021-07-01 09:56:08,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:56:08,031 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839416953] [2021-07-01 09:56:08,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:56:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:56:08,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:56:08,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-01 09:56:08,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:56:08,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-01 09:56:08,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 09:56:08,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-01 09:56:08,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 09:56:08,049 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:56:08,049 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839416953] [2021-07-01 09:56:08,049 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839416953] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 09:56:08,049 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 09:56:08,049 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-01 09:56:08,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86965195] [2021-07-01 09:56:08,051 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-01 09:56:08,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:56:08,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-01 09:56:08,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-01 09:56:08,052 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 56 [2021-07-01 09:56:08,052 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 49 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2021-07-01 09:56:08,053 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-07-01 09:56:08,053 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 56 [2021-07-01 09:56:08,053 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-07-01 09:56:08,374 INFO L129 PetriNetUnfolder]: 448/1753 cut-off events. [2021-07-01 09:56:08,375 INFO L130 PetriNetUnfolder]: For 193/193 co-relation queries the response was YES. [2021-07-01 09:56:08,393 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2935 conditions, 1753 events. 448/1753 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 17302 event pairs, 321 based on Foata normal form. 486/2132 useless extension candidates. Maximal degree in co-relation 2921. Up to 450 conditions per place. [2021-07-01 09:56:08,411 INFO L132 encePairwiseOnDemand]: 48/56 looper letters, 8 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2021-07-01 09:56:08,412 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 49 transitions, 148 flow [2021-07-01 09:56:08,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 09:56:08,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-07-01 09:56:08,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 157 transitions. [2021-07-01 09:56:08,422 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9345238095238095 [2021-07-01 09:56:08,422 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 157 transitions. [2021-07-01 09:56:08,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 157 transitions. [2021-07-01 09:56:08,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-01 09:56:08,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 157 transitions. [2021-07-01 09:56:08,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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) [2021-07-01 09:56:08,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 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) [2021-07-01 09:56:08,426 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 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) [2021-07-01 09:56:08,427 INFO L185 Difference]: Start difference. First operand has 62 places, 49 transitions, 130 flow. Second operand 3 states and 157 transitions. [2021-07-01 09:56:08,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 49 transitions, 148 flow [2021-07-01 09:56:08,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 49 transitions, 142 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-07-01 09:56:08,437 INFO L241 Difference]: Finished difference. Result has 63 places, 49 transitions, 141 flow [2021-07-01 09:56:08,438 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=63, PETRI_TRANSITIONS=49} [2021-07-01 09:56:08,438 INFO L335 CegarLoopForPetriNet]: 66 programPoint places, -3 predicate places. [2021-07-01 09:56:08,438 INFO L482 AbstractCegarLoop]: Abstraction has has 63 places, 49 transitions, 141 flow [2021-07-01 09:56:08,439 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2021-07-01 09:56:08,439 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-07-01 09:56:08,439 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 09:56:08,439 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-01 09:56:08,439 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:56:08,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:56:08,440 INFO L82 PathProgramCache]: Analyzing trace with hash 88396506, now seen corresponding path program 2 times [2021-07-01 09:56:08,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:56:08,440 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074984719] [2021-07-01 09:56:08,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:56:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-01 09:56:08,460 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-01 09:56:08,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-01 09:56:08,470 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-01 09:56:08,484 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-01 09:56:08,484 INFO L605 BasicCegarLoop]: Counterexample might be feasible [2021-07-01 09:56:08,485 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-01 09:56:08,485 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadWithAssertThread1of1ForFork1 was UNSAFE (2/2) [2021-07-01 09:56:08,486 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-01 09:56:08,498 INFO L202 PluginConnector]: Adding new model bluetooth-incorrect07.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 09:56:08 BasicIcfg [2021-07-01 09:56:08,498 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-01 09:56:08,500 INFO L168 Benchmark]: Toolchain (without parser) took 1297.66 ms. Allocated memory is still 209.7 MB. Free memory was 189.4 MB in the beginning and 101.2 MB in the end (delta: 88.2 MB). Peak memory consumption was 89.8 MB. Max. memory is 8.0 GB. [2021-07-01 09:56:08,500 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 209.7 MB. Free memory is still 190.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-01 09:56:08,501 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.09 ms. Allocated memory is still 209.7 MB. Free memory was 189.3 MB in the beginning and 187.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-01 09:56:08,501 INFO L168 Benchmark]: Boogie Preprocessor took 16.66 ms. Allocated memory is still 209.7 MB. Free memory was 187.5 MB in the beginning and 186.6 MB in the end (delta: 901.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-01 09:56:08,502 INFO L168 Benchmark]: RCFGBuilder took 249.71 ms. Allocated memory is still 209.7 MB. Free memory was 186.5 MB in the beginning and 172.1 MB in the end (delta: 14.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-07-01 09:56:08,502 INFO L168 Benchmark]: TraceAbstraction took 991.82 ms. Allocated memory is still 209.7 MB. Free memory was 171.6 MB in the beginning and 101.2 MB in the end (delta: 70.4 MB). Peak memory consumption was 71.9 MB. Max. memory is 8.0 GB. [2021-07-01 09:56:08,504 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 0.11 ms. Allocated memory is still 209.7 MB. Free memory is still 190.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 34.09 ms. Allocated memory is still 209.7 MB. Free memory was 189.3 MB in the beginning and 187.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 16.66 ms. Allocated memory is still 209.7 MB. Free memory was 187.5 MB in the beginning and 186.6 MB in the end (delta: 901.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * RCFGBuilder took 249.71 ms. Allocated memory is still 209.7 MB. Free memory was 186.5 MB in the beginning and 172.1 MB in the end (delta: 14.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 991.82 ms. Allocated memory is still 209.7 MB. Free memory was 171.6 MB in the beginning and 101.2 MB in the end (delta: 70.4 MB). Peak memory consumption was 71.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 40]: assertion can be violated assertion can be violated We found a FailurePath: [L14] 0 pendingIo := 1; VAL [pendingIo=1] [L15] 0 stopped := false; VAL [pendingIo=1, stopped=false] [L16] 0 stoppingEvent := false; VAL [pendingIo=1, stopped=false, stoppingEvent=false] [L17] 0 stoppingFlag := false; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L19] FORK 0 fork 0 ServerThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L21] FORK 0 fork 1 DeviceThreadWithAssert(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L62] 2 assume !stoppingFlag; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L84] 1 stoppingFlag := true; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=true] [L94] 1 pendingIo := pendingIo - 1; [L95] COND TRUE 1 pendingIo == 0 [L96] 1 stoppingEvent := true; VAL [pendingIo=0, stopped=false, stoppingEvent=true, stoppingFlag=true] [L86] 1 assume stoppingEvent; VAL [pendingIo=0, stopped=false, stoppingEvent=true, stoppingFlag=true] [L87] 1 stopped := true; VAL [pendingIo=0, stopped=true, stoppingEvent=true, stoppingFlag=true] [L63] 2 pendingIo := pendingIo + 1; VAL [pendingIo=1, stopped=true, stoppingEvent=true, stoppingFlag=true] [L40] 2 assert !stopped; VAL [pendingIo=1, stopped=true, stoppingEvent=true, stoppingFlag=true] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 12 procedures, 74 locations, 10 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 89.9ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 84.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred 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: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: DeviceThreadWithAssertThread1of1ForFork1 with 1 thread instances CFG has 12 procedures, 74 locations, 10 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 13.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 749.5ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 477.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 36.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 12 SDtfs, 1 SDslu, 0 SDs, 0 SdLazy, 11 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=141occurred in iteration=2, InterpolantAutomatonStates: 6, 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: 8.5ms SsaConstructionTime, 30.1ms SatisfiabilityAnalysisTime, 56.7ms InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 27 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...