/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/POPL2022/bluetooth03-incorrect.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d310483fe8b4879eee5de19363f50e4b839cc4ec-d310483 [2021-06-24 18:26:11,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-24 18:26:11,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-24 18:26:11,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-24 18:26:11,984 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-24 18:26:11,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-24 18:26:11,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-24 18:26:11,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-24 18:26:11,990 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-24 18:26:11,990 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-24 18:26:11,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-24 18:26:11,992 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-24 18:26:11,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-24 18:26:11,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-24 18:26:11,995 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-24 18:26:11,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-24 18:26:11,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-24 18:26:11,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-24 18:26:11,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-24 18:26:12,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-24 18:26:12,003 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-24 18:26:12,004 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-24 18:26:12,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-24 18:26:12,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-24 18:26:12,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-24 18:26:12,039 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 [2021-06-24 18:26:12,065 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-24 18:26:12,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-24 18:26:12,067 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-24 18:26:12,067 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-24 18:26:12,067 INFO L138 SettingsManager]: * Use SBE=true [2021-06-24 18:26:12,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-24 18:26:12,067 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-24 18:26:12,068 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-24 18:26:12,068 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-24 18:26:12,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-24 18:26:12,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-24 18:26:12,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-24 18:26:12,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-24 18:26:12,068 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-24 18:26:12,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-24 18:26:12,069 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-24 18:26:12,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-24 18:26:12,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-24 18:26:12,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-24 18:26:12,069 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-24 18:26:12,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-24 18:26:12,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 18:26:12,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-24 18:26:12,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-24 18:26:12,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-24 18:26:12,070 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-24 18:26:12,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-24 18:26:12,070 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-24 18:26:12,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-24 18:26:12,071 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-24 18:26:12,071 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-24 18:26:12,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-24 18:26:12,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-24 18:26:12,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-24 18:26:12,431 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-24 18:26:12,432 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-24 18:26:12,433 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth03-incorrect.bpl [2021-06-24 18:26:12,433 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth03-incorrect.bpl' [2021-06-24 18:26:12,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-24 18:26:12,457 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-24 18:26:12,458 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-24 18:26:12,458 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-24 18:26:12,458 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-24 18:26:12,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth03-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:26:12" (1/1) ... [2021-06-24 18:26:12,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth03-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:26:12" (1/1) ... [2021-06-24 18:26:12,486 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-24 18:26:12,487 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-24 18:26:12,488 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-24 18:26:12,488 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-24 18:26:12,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth03-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:26:12" (1/1) ... [2021-06-24 18:26:12,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth03-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:26:12" (1/1) ... [2021-06-24 18:26:12,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth03-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:26:12" (1/1) ... [2021-06-24 18:26:12,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth03-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:26:12" (1/1) ... [2021-06-24 18:26:12,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth03-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:26:12" (1/1) ... [2021-06-24 18:26:12,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth03-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:26:12" (1/1) ... [2021-06-24 18:26:12,501 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth03-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:26:12" (1/1) ... [2021-06-24 18:26:12,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-24 18:26:12,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-24 18:26:12,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-24 18:26:12,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-24 18:26:12,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth03-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:26:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 18:26:12,566 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-06-24 18:26:12,566 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-06-24 18:26:12,566 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-06-24 18:26:12,567 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-06-24 18:26:12,567 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-06-24 18:26:12,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-06-24 18:26:12,567 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-24 18:26:12,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-24 18:26:12,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-24 18:26:12,568 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-24 18:26:12,771 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-24 18:26:12,771 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-06-24 18:26:12,773 INFO L202 PluginConnector]: Adding new model bluetooth03-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 06:26:12 BoogieIcfgContainer [2021-06-24 18:26:12,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-24 18:26:12,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-24 18:26:12,792 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-24 18:26:12,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-24 18:26:12,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth03-incorrect.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:26:12" (1/2) ... [2021-06-24 18:26:12,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e8bc9fc and model type bluetooth03-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 06:26:12, skipping insertion in model container [2021-06-24 18:26:12,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth03-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 06:26:12" (2/2) ... [2021-06-24 18:26:12,797 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth03-incorrect.bpl [2021-06-24 18:26:12,801 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-24 18:26:12,802 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-24 18:26:12,802 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-24 18:26:12,802 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-24 18:26:12,850 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-24 18:26:12,871 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-24 18:26:12,889 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 18:26:12,889 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 18:26:12,889 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 18:26:12,889 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 18:26:12,889 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 18:26:12,890 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 18:26:12,890 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 18:26:12,890 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-24 18:26:13,121 INFO L276 IsEmpty]: Start isEmpty. Operand has 263 states, 220 states have (on average 1.6681818181818182) internal successors, (367), 262 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:26:13,129 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-24 18:26:13,130 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/4) [2021-06-24 18:26:13,132 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-24 18:26:13,134 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 18:26:13,135 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 18:26:13,135 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 18:26:13,135 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 18:26:13,135 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 18:26:13,135 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 18:26:13,135 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 18:26:13,135 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork2======== [2021-06-24 18:26:13,777 INFO L276 IsEmpty]: Start isEmpty. Operand has 2387 states, 2347 states have (on average 3.5811674478057096) internal successors, (8405), 2386 states have internal predecessors, (8405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:26:13,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-06-24 18:26:13,783 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:26:13,784 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:26:13,784 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:26:13,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:26:13,790 INFO L82 PathProgramCache]: Analyzing trace with hash -360861356, now seen corresponding path program 1 times [2021-06-24 18:26:13,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:26:13,799 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743863560] [2021-06-24 18:26:13,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:26:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 18:26:13,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:13,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:26:13,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:13,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-24 18:26:13,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 18:26:13,941 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 18:26:13,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743863560] [2021-06-24 18:26:13,943 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743863560] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 18:26:13,943 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 18:26:13,943 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-24 18:26:13,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276604667] [2021-06-24 18:26:13,946 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 18:26:13,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 18:26:13,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 18:26:13,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 18:26:13,970 INFO L87 Difference]: Start difference. First operand has 2387 states, 2347 states have (on average 3.5811674478057096) internal successors, (8405), 2386 states have internal predecessors, (8405), 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 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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) [2021-06-24 18:26:14,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 18:26:14,053 INFO L93 Difference]: Finished difference Result 2471 states and 8014 transitions. [2021-06-24 18:26:14,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 18:26:14,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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 [2021-06-24 18:26:14,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 18:26:14,088 INFO L225 Difference]: With dead ends: 2471 [2021-06-24 18:26:14,088 INFO L226 Difference]: Without dead ends: 1791 [2021-06-24 18:26:14,089 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 18:26:14,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2021-06-24 18:26:14,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 1779. [2021-06-24 18:26:14,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1779 states, 1771 states have (on average 3.269339356295878) internal successors, (5790), 1778 states have internal predecessors, (5790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:26:14,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 5790 transitions. [2021-06-24 18:26:14,246 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 5790 transitions. Word has length 10 [2021-06-24 18:26:14,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 18:26:14,247 INFO L482 AbstractCegarLoop]: Abstraction has 1779 states and 5790 transitions. [2021-06-24 18:26:14,248 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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) [2021-06-24 18:26:14,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 5790 transitions. [2021-06-24 18:26:14,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-24 18:26:14,260 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:26:14,260 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:26:14,260 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-24 18:26:14,260 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:26:14,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:26:14,262 INFO L82 PathProgramCache]: Analyzing trace with hash 564619282, now seen corresponding path program 1 times [2021-06-24 18:26:14,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:26:14,263 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076158769] [2021-06-24 18:26:14,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:26:14,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 18:26:14,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:14,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:26:14,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:14,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:26:14,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:14,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:26:14,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 18:26:14,296 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 18:26:14,296 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076158769] [2021-06-24 18:26:14,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076158769] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 18:26:14,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 18:26:14,297 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 18:26:14,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461040991] [2021-06-24 18:26:14,298 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 18:26:14,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 18:26:14,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 18:26:14,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 18:26:14,299 INFO L87 Difference]: Start difference. First operand 1779 states and 5790 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:26:14,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 18:26:14,321 INFO L93 Difference]: Finished difference Result 1743 states and 4946 transitions. [2021-06-24 18:26:14,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 18:26:14,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2021-06-24 18:26:14,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 18:26:14,329 INFO L225 Difference]: With dead ends: 1743 [2021-06-24 18:26:14,329 INFO L226 Difference]: Without dead ends: 1101 [2021-06-24 18:26:14,330 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 18:26:14,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2021-06-24 18:26:14,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 1047. [2021-06-24 18:26:14,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1039 states have (on average 2.8123195380173245) internal successors, (2922), 1046 states have internal predecessors, (2922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:26:14,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 2922 transitions. [2021-06-24 18:26:14,366 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 2922 transitions. Word has length 14 [2021-06-24 18:26:14,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 18:26:14,366 INFO L482 AbstractCegarLoop]: Abstraction has 1047 states and 2922 transitions. [2021-06-24 18:26:14,366 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:26:14,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 2922 transitions. [2021-06-24 18:26:14,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-24 18:26:14,368 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:26:14,368 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:26:14,368 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-24 18:26:14,369 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:26:14,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:26:14,369 INFO L82 PathProgramCache]: Analyzing trace with hash 668481810, now seen corresponding path program 2 times [2021-06-24 18:26:14,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:26:14,369 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271937568] [2021-06-24 18:26:14,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:26:14,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 18:26:14,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:14,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-24 18:26:14,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:14,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-24 18:26:14,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:14,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-24 18:26:14,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:14,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-24 18:26:14,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:14,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:26:14,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 18:26:14,491 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 18:26:14,491 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271937568] [2021-06-24 18:26:14,491 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271937568] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 18:26:14,492 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 18:26:14,492 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-24 18:26:14,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661861980] [2021-06-24 18:26:14,492 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-24 18:26:14,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 18:26:14,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-24 18:26:14,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-24 18:26:14,493 INFO L87 Difference]: Start difference. First operand 1047 states and 2922 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:26:14,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 18:26:14,595 INFO L93 Difference]: Finished difference Result 1739 states and 4961 transitions. [2021-06-24 18:26:14,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 18:26:14,596 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2021-06-24 18:26:14,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 18:26:14,608 INFO L225 Difference]: With dead ends: 1739 [2021-06-24 18:26:14,608 INFO L226 Difference]: Without dead ends: 1690 [2021-06-24 18:26:14,609 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 26.2ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-24 18:26:14,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1690 states. [2021-06-24 18:26:14,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1690 to 1612. [2021-06-24 18:26:14,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1612 states, 1604 states have (on average 2.9108478802992517) internal successors, (4669), 1611 states have internal predecessors, (4669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:26:14,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 4669 transitions. [2021-06-24 18:26:14,674 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 4669 transitions. Word has length 14 [2021-06-24 18:26:14,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 18:26:14,675 INFO L482 AbstractCegarLoop]: Abstraction has 1612 states and 4669 transitions. [2021-06-24 18:26:14,675 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:26:14,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 4669 transitions. [2021-06-24 18:26:14,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-24 18:26:14,678 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:26:14,678 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:26:14,678 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-24 18:26:14,678 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:26:14,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:26:14,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1126965300, now seen corresponding path program 3 times [2021-06-24 18:26:14,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:26:14,680 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923929611] [2021-06-24 18:26:14,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:26:14,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-24 18:26:14,695 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-24 18:26:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-24 18:26:14,706 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-24 18:26:14,730 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-24 18:26:14,730 INFO L605 BasicCegarLoop]: Counterexample might be feasible [2021-06-24 18:26:14,730 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-24 18:26:14,731 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadThread1of1ForFork2 was UNSAFE (2/4) [2021-06-24 18:26:14,732 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-24 18:26:14,749 INFO L202 PluginConnector]: Adding new model bluetooth03-incorrect.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 06:26:14 BasicIcfg [2021-06-24 18:26:14,749 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-24 18:26:14,754 INFO L168 Benchmark]: Toolchain (without parser) took 2292.91 ms. Allocated memory was 170.9 MB in the beginning and 238.0 MB in the end (delta: 67.1 MB). Free memory was 151.7 MB in the beginning and 169.3 MB in the end (delta: -17.7 MB). Peak memory consumption was 49.4 MB. Max. memory is 8.0 GB. [2021-06-24 18:26:14,755 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.16 ms. Allocated memory is still 170.9 MB. Free memory is still 152.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-24 18:26:14,755 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.63 ms. Allocated memory is still 170.9 MB. Free memory was 151.6 MB in the beginning and 149.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-24 18:26:14,755 INFO L168 Benchmark]: Boogie Preprocessor took 14.55 ms. Allocated memory is still 170.9 MB. Free memory was 149.8 MB in the beginning and 149.0 MB in the end (delta: 843.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-24 18:26:14,756 INFO L168 Benchmark]: RCFGBuilder took 276.59 ms. Allocated memory is still 170.9 MB. Free memory was 148.8 MB in the beginning and 136.4 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-06-24 18:26:14,758 INFO L168 Benchmark]: TraceAbstraction took 1957.38 ms. Allocated memory was 170.9 MB in the beginning and 238.0 MB in the end (delta: 67.1 MB). Free memory was 136.0 MB in the beginning and 169.3 MB in the end (delta: -33.4 MB). Peak memory consumption was 33.7 MB. Max. memory is 8.0 GB. [2021-06-24 18:26:14,762 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 0.16 ms. Allocated memory is still 170.9 MB. Free memory is still 152.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 28.63 ms. Allocated memory is still 170.9 MB. Free memory was 151.6 MB in the beginning and 149.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 14.55 ms. Allocated memory is still 170.9 MB. Free memory was 149.8 MB in the beginning and 149.0 MB in the end (delta: 843.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 276.59 ms. Allocated memory is still 170.9 MB. Free memory was 148.8 MB in the beginning and 136.4 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1957.38 ms. Allocated memory was 170.9 MB in the beginning and 238.0 MB in the end (delta: 67.1 MB). Free memory was 136.0 MB in the beginning and 169.3 MB in the end (delta: -33.4 MB). Peak memory consumption was 33.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 578, positive: 491, positive conditional: 491, positive unconditional: 0, negative: 87, negative conditional: 87, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 521, positive: 491, positive conditional: 0, positive unconditional: 491, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 118, positive: 111, positive conditional: 0, positive unconditional: 111, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 118, positive: 101, positive conditional: 0, positive unconditional: 101, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 17, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 68, positive: 46, positive conditional: 0, positive unconditional: 46, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 521, positive: 380, positive conditional: 0, positive unconditional: 380, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 118, unknown conditional: 0, unknown unconditional: 118] , Statistics on independence cache: Total cache size (in pairs): 118, Positive cache size: 111, Positive conditional cache size: 0, Positive unconditional cache size: 111, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Independence queries for same thread: 57 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 18526, positive: 15820, positive conditional: 15820, positive unconditional: 0, negative: 2706, negative conditional: 2706, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 16682, positive: 15820, positive conditional: 0, positive unconditional: 15820, negative: 862, negative conditional: 0, negative unconditional: 862, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 337, positive: 309, positive conditional: 0, positive unconditional: 309, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 337, positive: 287, positive conditional: 0, positive unconditional: 287, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 50, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 196, positive: 99, positive conditional: 0, positive unconditional: 99, negative: 97, negative conditional: 0, negative unconditional: 97, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 16682, positive: 15511, positive conditional: 0, positive unconditional: 15511, negative: 834, negative conditional: 0, negative unconditional: 834, unknown: 337, unknown conditional: 0, unknown unconditional: 337] , Statistics on independence cache: Total cache size (in pairs): 337, Positive cache size: 309, Positive conditional cache size: 0, Positive unconditional cache size: 309, Negative cache size: 28, Negative conditional cache size: 0, Negative unconditional cache size: 28, Independence queries for same thread: 1844 - CounterExampleResult [Line: 34]: assertion can be violated assertion can be violated We found a FailurePath: [L13] 0 pendingIo := 1; VAL [pendingIo=1] [L14] 0 stopped := false; VAL [pendingIo=1, stopped=false] [L15] 0 stoppingEvent := false; VAL [pendingIo=1, stopped=false, stoppingEvent=false] [L16] 0 stoppingFlag := false; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L18] FORK 0 fork 0 ServerThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L19] FORK 0 fork 1 DeviceThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L20] FORK 0 fork 2 DeviceThread(); VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L44] 3 assume !stoppingFlag; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L66] 1 stoppingFlag := true; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=true] [L76] 1 pendingIo := pendingIo - 1; [L77] COND TRUE 1 pendingIo == 0 [L78] 1 stoppingEvent := true; VAL [pendingIo=0, stopped=false, stoppingEvent=true, stoppingFlag=true] [L45] 3 pendingIo := pendingIo + 1; VAL [pendingIo=1, stopped=false, stoppingEvent=true, stoppingFlag=true] [L68] 1 assume stoppingEvent; VAL [pendingIo=1, stopped=false, stoppingEvent=true, stoppingFlag=true] [L69] 1 stopped := true; VAL [pendingIo=1, stopped=true, stoppingEvent=true, stoppingFlag=true] [L34] 3 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 7 procedures, 50 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 243.3ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 11.3ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 228.0ms, PartialOrderReductionTime: 216.1ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=263occurred 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: DeviceThreadThread1of1ForFork2 with 1 thread instances CFG has 7 procedures, 50 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1596.1ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 33.6ms, AutomataDifference: 290.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 630.0ms, PartialOrderReductionTime: 628.4ms, HoareTripleCheckerStatistics: 108 SDtfs, 83 SDslu, 90 SDs, 0 SdLazy, 42 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 71.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 39.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2387occurred in iteration=0, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 244.2ms AutomataMinimizationTime, 3 MinimizatonAttempts, 144 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 12.5ms SsaConstructionTime, 35.2ms SatisfiabilityAnalysisTime, 163.8ms InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 88 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...