/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/bluetooth-incorrect06.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-1c3aa5735269c4be989a50fc1da9ea7b9492ef29-1c3aa57 [2021-07-01 10:04:16,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-01 10:04:16,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-01 10:04:16,659 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-01 10:04:16,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-01 10:04:16,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-01 10:04:16,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-01 10:04:16,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-01 10:04:16,670 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-01 10:04:16,673 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-01 10:04:16,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-01 10:04:16,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-01 10:04:16,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-01 10:04:16,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-01 10:04:16,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-01 10:04:16,679 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-01 10:04:16,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-01 10:04:16,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-01 10:04:16,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-01 10:04:16,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-01 10:04:16,689 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-01 10:04:16,690 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-01 10:04:16,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-01 10:04:16,692 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-01 10:04:16,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-01 10:04:16,708 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf [2021-07-01 10:04:16,738 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-01 10:04:16,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-01 10:04:16,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-01 10:04:16,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-01 10:04:16,741 INFO L138 SettingsManager]: * Use SBE=true [2021-07-01 10:04:16,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-01 10:04:16,741 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-01 10:04:16,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-01 10:04:16,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-01 10:04:16,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-01 10:04:16,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-01 10:04:16,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-01 10:04:16,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-01 10:04:16,743 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-01 10:04:16,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-01 10:04:16,743 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-01 10:04:16,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-01 10:04:16,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-01 10:04:16,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-01 10:04:16,743 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-01 10:04:16,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-01 10:04:16,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-01 10:04:16,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-01 10:04:16,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-01 10:04:16,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-01 10:04:16,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-01 10:04:16,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-01 10:04:16,744 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-01 10:04:16,744 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-01 10:04:16,745 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-07-01 10:04:16,745 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-01 10:04:17,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-01 10:04:17,051 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-01 10:04:17,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-01 10:04:17,053 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-01 10:04:17,055 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-01 10:04:17,055 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-incorrect06.bpl [2021-07-01 10:04:17,055 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-incorrect06.bpl' [2021-07-01 10:04:17,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-01 10:04:17,092 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-01 10:04:17,101 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-01 10:04:17,101 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-01 10:04:17,101 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-01 10:04:17,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-incorrect06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:04:17" (1/1) ... [2021-07-01 10:04:17,114 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-incorrect06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:04:17" (1/1) ... [2021-07-01 10:04:17,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-01 10:04:17,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-01 10:04:17,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-01 10:04:17,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-01 10:04:17,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-incorrect06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:04:17" (1/1) ... [2021-07-01 10:04:17,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-incorrect06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:04:17" (1/1) ... [2021-07-01 10:04:17,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-incorrect06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:04:17" (1/1) ... [2021-07-01 10:04:17,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-incorrect06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:04:17" (1/1) ... [2021-07-01 10:04:17,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-incorrect06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:04:17" (1/1) ... [2021-07-01 10:04:17,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-incorrect06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:04:17" (1/1) ... [2021-07-01 10:04:17,159 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-incorrect06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:04:17" (1/1) ... [2021-07-01 10:04:17,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-01 10:04:17,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-01 10:04:17,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-01 10:04:17,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-01 10:04:17,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-incorrect06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:04:17" (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 10:04:17,262 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThreadWithAssert given in one single declaration [2021-07-01 10:04:17,276 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThreadWithAssert [2021-07-01 10:04:17,276 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThreadWithAssert [2021-07-01 10:04:17,276 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-07-01 10:04:17,276 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-07-01 10:04:17,276 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-07-01 10:04:17,276 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-07-01 10:04:17,276 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-07-01 10:04:17,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-07-01 10:04:17,277 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-01 10:04:17,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-01 10:04:17,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-01 10:04:17,278 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 10:04:17,578 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-01 10:04:17,578 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-07-01 10:04:17,579 INFO L202 PluginConnector]: Adding new model bluetooth-incorrect06.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:04:17 BoogieIcfgContainer [2021-07-01 10:04:17,579 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-01 10:04:17,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-01 10:04:17,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-01 10:04:17,582 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-01 10:04:17,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-incorrect06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:04:17" (1/2) ... [2021-07-01 10:04:17,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d164653 and model type bluetooth-incorrect06.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:04:17, skipping insertion in model container [2021-07-01 10:04:17,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-incorrect06.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:04:17" (2/2) ... [2021-07-01 10:04:17,584 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth-incorrect06.bpl [2021-07-01 10:04:17,587 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-01 10:04:17,587 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-01 10:04:17,587 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-01 10:04:17,588 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-01 10:04:17,670 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-01 10:04:17,705 INFO L255 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-07-01 10:04:17,730 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-01 10:04:17,731 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-01 10:04:17,731 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-01 10:04:17,731 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-01 10:04:17,731 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-01 10:04:17,731 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-01 10:04:17,731 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-01 10:04:17,731 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-01 10:04:19,958 INFO L276 IsEmpty]: Start isEmpty. Operand has 12287 states, 10240 states have (on average 2.5337890625) internal successors, (25946), 12286 states have internal predecessors, (25946), 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 10:04:20,017 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-01 10:04:20,018 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/2) [2021-07-01 10:04:20,019 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-01 10:04:20,021 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-01 10:04:20,021 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-01 10:04:20,021 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-01 10:04:20,021 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-01 10:04:20,021 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-01 10:04:20,021 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-01 10:04:20,021 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-01 10:04:20,021 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadWithAssertThread1of1ForFork1======== [2021-07-01 10:04:53,164 INFO L276 IsEmpty]: Start isEmpty. Operand has 71681 states, 71671 states have (on average 6.825898899136331) internal successors, (489219), 71680 states have internal predecessors, (489219), 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 10:04:53,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-07-01 10:04:53,174 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 10:04:53,175 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 10:04:53,175 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 10:04:53,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 10:04:53,179 INFO L82 PathProgramCache]: Analyzing trace with hash -666974634, now seen corresponding path program 1 times [2021-07-01 10:04:53,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 10:04:53,185 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932324272] [2021-07-01 10:04:53,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 10:04:53,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 10:04:53,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:53,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-01 10:04:53,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:53,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:53,269 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 10:04:53,270 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 10:04:53,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932324272] [2021-07-01 10:04:53,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932324272] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 10:04:53,271 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 10:04:53,271 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-01 10:04:53,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364313899] [2021-07-01 10:04:53,273 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-01 10:04:53,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 10:04:53,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-01 10:04:53,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-01 10:04:53,428 INFO L87 Difference]: Start difference. First operand has 71681 states, 71671 states have (on average 6.825898899136331) internal successors, (489219), 71680 states have internal predecessors, (489219), 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 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 10:04:55,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-01 10:04:55,833 INFO L93 Difference]: Finished difference Result 81237 states and 546112 transitions. [2021-07-01 10:04:55,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 10:04:55,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2021-07-01 10:04:55,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-01 10:04:56,714 INFO L225 Difference]: With dead ends: 81237 [2021-07-01 10:04:56,715 INFO L226 Difference]: Without dead ends: 62105 [2021-07-01 10:04:56,716 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-01 10:04:58,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62105 states. [2021-07-01 10:05:00,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62105 to 62105. [2021-07-01 10:05:01,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62105 states, 62103 states have (on average 6.726567154565802) internal successors, (417740), 62104 states have internal predecessors, (417740), 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 10:05:02,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62105 states to 62105 states and 417740 transitions. [2021-07-01 10:05:02,161 INFO L78 Accepts]: Start accepts. Automaton has 62105 states and 417740 transitions. Word has length 9 [2021-07-01 10:05:02,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-01 10:05:02,162 INFO L482 AbstractCegarLoop]: Abstraction has 62105 states and 417740 transitions. [2021-07-01 10:05:02,163 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 10:05:02,163 INFO L276 IsEmpty]: Start isEmpty. Operand 62105 states and 417740 transitions. [2021-07-01 10:05:02,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-07-01 10:05:02,170 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 10:05:02,170 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 10:05:02,171 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-01 10:05:02,171 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 10:05:02,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 10:05:02,171 INFO L82 PathProgramCache]: Analyzing trace with hash -3345964, now seen corresponding path program 1 times [2021-07-01 10:05:02,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 10:05:02,172 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629727387] [2021-07-01 10:05:02,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 10:05:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 10:05:02,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:05:02,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-01 10:05:02,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:05:02,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-01 10:05:02,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:05:02,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-01 10:05:02,188 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 10:05:02,188 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 10:05:02,189 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629727387] [2021-07-01 10:05:02,189 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629727387] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 10:05:02,189 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 10:05:02,189 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-01 10:05:02,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119678334] [2021-07-01 10:05:02,190 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-01 10:05:02,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 10:05:02,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-01 10:05:02,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-01 10:05:02,191 INFO L87 Difference]: Start difference. First operand 62105 states and 417740 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 10:05:03,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-01 10:05:03,919 INFO L93 Difference]: Finished difference Result 62105 states and 343381 transitions. [2021-07-01 10:05:03,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 10:05:03,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2021-07-01 10:05:03,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-01 10:05:04,172 INFO L225 Difference]: With dead ends: 62105 [2021-07-01 10:05:04,173 INFO L226 Difference]: Without dead ends: 38218 [2021-07-01 10:05:04,174 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-01 10:05:04,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38218 states. [2021-07-01 10:05:06,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38218 to 38218. [2021-07-01 10:05:06,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38218 states, 38216 states have (on average 5.481578396483148) internal successors, (209484), 38217 states have internal predecessors, (209484), 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 10:05:06,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38218 states to 38218 states and 209484 transitions. [2021-07-01 10:05:06,660 INFO L78 Accepts]: Start accepts. Automaton has 38218 states and 209484 transitions. Word has length 13 [2021-07-01 10:05:06,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-01 10:05:06,660 INFO L482 AbstractCegarLoop]: Abstraction has 38218 states and 209484 transitions. [2021-07-01 10:05:06,660 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 10:05:06,660 INFO L276 IsEmpty]: Start isEmpty. Operand 38218 states and 209484 transitions. [2021-07-01 10:05:06,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-07-01 10:05:06,663 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 10:05:06,663 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 10:05:06,663 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-01 10:05:06,663 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 10:05:06,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 10:05:06,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1973754452, now seen corresponding path program 2 times [2021-07-01 10:05:06,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 10:05:06,664 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295413011] [2021-07-01 10:05:06,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 10:05:06,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 10:05:06,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:05:06,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:05:06,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:05:06,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:05:06,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:05:06,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:05:06,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:05:06,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:05:06,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:05:06,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-01 10:05:06,706 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 10:05:06,706 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 10:05:06,706 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295413011] [2021-07-01 10:05:06,707 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295413011] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 10:05:06,707 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 10:05:06,707 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-01 10:05:06,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615089769] [2021-07-01 10:05:06,707 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-01 10:05:06,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 10:05:06,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-01 10:05:06,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-07-01 10:05:06,708 INFO L87 Difference]: Start difference. First operand 38218 states and 209484 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 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 10:05:07,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-01 10:05:07,592 INFO L93 Difference]: Finished difference Result 71815 states and 402528 transitions. [2021-07-01 10:05:07,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 10:05:07,593 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 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 13 [2021-07-01 10:05:07,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-01 10:05:08,265 INFO L225 Difference]: With dead ends: 71815 [2021-07-01 10:05:08,265 INFO L226 Difference]: Without dead ends: 71205 [2021-07-01 10:05:08,266 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 17.8ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-07-01 10:05:09,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71205 states. [2021-07-01 10:05:11,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71205 to 70413. [2021-07-01 10:05:11,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70413 states, 70411 states have (on average 5.627671812642911) internal successors, (396250), 70412 states have internal predecessors, (396250), 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 10:05:11,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70413 states to 70413 states and 396250 transitions. [2021-07-01 10:05:11,890 INFO L78 Accepts]: Start accepts. Automaton has 70413 states and 396250 transitions. Word has length 13 [2021-07-01 10:05:11,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-01 10:05:11,890 INFO L482 AbstractCegarLoop]: Abstraction has 70413 states and 396250 transitions. [2021-07-01 10:05:11,890 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 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 10:05:11,891 INFO L276 IsEmpty]: Start isEmpty. Operand 70413 states and 396250 transitions. [2021-07-01 10:05:11,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-07-01 10:05:11,893 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 10:05:11,893 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 10:05:11,893 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-01 10:05:11,893 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 10:05:11,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 10:05:11,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1633934474, now seen corresponding path program 3 times [2021-07-01 10:05:11,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 10:05:11,894 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475306874] [2021-07-01 10:05:11,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 10:05:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-01 10:05:11,898 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-01 10:05:11,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-01 10:05:11,902 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-01 10:05:11,914 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-01 10:05:11,915 INFO L605 BasicCegarLoop]: Counterexample might be feasible [2021-07-01 10:05:11,915 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-01 10:05:11,915 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadWithAssertThread1of1ForFork1 was UNSAFE (2/2) [2021-07-01 10:05:11,916 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-01 10:05:11,925 INFO L202 PluginConnector]: Adding new model bluetooth-incorrect06.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:05:11 BasicIcfg [2021-07-01 10:05:11,925 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-01 10:05:11,926 INFO L168 Benchmark]: Toolchain (without parser) took 54833.45 ms. Allocated memory was 178.3 MB in the beginning and 6.8 GB in the end (delta: 6.6 GB). Free memory was 156.9 MB in the beginning and 4.3 GB in the end (delta: -4.2 GB). Peak memory consumption was 2.4 GB. Max. memory is 8.0 GB. [2021-07-01 10:05:11,926 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.35 ms. Allocated memory is still 178.3 MB. Free memory is still 158.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-01 10:05:11,927 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.51 ms. Allocated memory is still 178.3 MB. Free memory was 156.8 MB in the beginning and 155.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-01 10:05:11,927 INFO L168 Benchmark]: Boogie Preprocessor took 9.45 ms. Allocated memory is still 178.3 MB. Free memory was 155.0 MB in the beginning and 154.1 MB in the end (delta: 880.7 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-01 10:05:11,928 INFO L168 Benchmark]: RCFGBuilder took 418.88 ms. Allocated memory is still 178.3 MB. Free memory was 153.9 MB in the beginning and 139.8 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-07-01 10:05:11,928 INFO L168 Benchmark]: TraceAbstraction took 54344.76 ms. Allocated memory was 178.3 MB in the beginning and 6.8 GB in the end (delta: 6.6 GB). Free memory was 139.3 MB in the beginning and 4.3 GB in the end (delta: -4.2 GB). Peak memory consumption was 2.4 GB. Max. memory is 8.0 GB. [2021-07-01 10:05:11,930 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 0.35 ms. Allocated memory is still 178.3 MB. Free memory is still 158.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 45.51 ms. Allocated memory is still 178.3 MB. Free memory was 156.8 MB in the beginning and 155.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 9.45 ms. Allocated memory is still 178.3 MB. Free memory was 155.0 MB in the beginning and 154.1 MB in the end (delta: 880.7 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 418.88 ms. Allocated memory is still 178.3 MB. Free memory was 153.9 MB in the beginning and 139.8 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 54344.76 ms. Allocated memory was 178.3 MB in the beginning and 6.8 GB in the end (delta: 6.6 GB). Free memory was 139.3 MB in the beginning and 4.3 GB in the end (delta: -4.2 GB). Peak memory consumption was 2.4 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 89911, positive: 79586, positive conditional: 79586, positive unconditional: 0, negative: 10325, negative conditional: 10325, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 85474, positive: 79586, positive conditional: 0, positive unconditional: 79586, negative: 5888, negative conditional: 0, negative unconditional: 5888, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 445, positive: 403, positive conditional: 0, positive unconditional: 403, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 445, positive: 367, positive conditional: 0, positive unconditional: 367, negative: 78, negative conditional: 0, negative unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 78, positive: 36, positive conditional: 0, positive unconditional: 36, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 194, positive: 94, positive conditional: 0, positive unconditional: 94, negative: 100, negative conditional: 0, negative unconditional: 100, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 85474, positive: 79183, positive conditional: 0, positive unconditional: 79183, negative: 5846, negative conditional: 0, negative unconditional: 5846, unknown: 445, unknown conditional: 0, unknown unconditional: 445] , Statistics on independence cache: Total cache size (in pairs): 445, Positive cache size: 403, Positive conditional cache size: 0, Positive unconditional cache size: 403, Negative cache size: 42, Negative conditional cache size: 0, Negative unconditional cache size: 42, Independence queries for same thread: 4437 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 1722213, positive: 1485254, positive conditional: 1485254, positive unconditional: 0, negative: 236959, negative conditional: 236959, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1622553, positive: 1485254, positive conditional: 0, positive unconditional: 1485254, negative: 137299, negative conditional: 0, negative unconditional: 137299, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 796, positive: 712, positive conditional: 0, positive unconditional: 712, negative: 84, negative conditional: 0, negative unconditional: 84, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 796, positive: 654, positive conditional: 0, positive unconditional: 654, negative: 142, negative conditional: 0, negative unconditional: 142, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 142, positive: 58, positive conditional: 0, positive unconditional: 58, negative: 84, negative conditional: 0, negative unconditional: 84, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 198, positive: 91, positive conditional: 0, positive unconditional: 91, negative: 107, negative conditional: 0, negative unconditional: 107, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1622553, positive: 1484542, positive conditional: 0, positive unconditional: 1484542, negative: 137215, negative conditional: 0, negative unconditional: 137215, unknown: 796, unknown conditional: 0, unknown unconditional: 796] , Statistics on independence cache: Total cache size (in pairs): 796, Positive cache size: 712, Positive conditional cache size: 0, Positive unconditional cache size: 712, Negative cache size: 84, Negative conditional cache size: 0, Negative unconditional cache size: 84, Independence queries for same thread: 99660 - CounterExampleResult [Line: 39]: 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] [L61] 2 assume !stoppingFlag; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=false] [L83] 1 stoppingFlag := true; VAL [pendingIo=1, stopped=false, stoppingEvent=false, stoppingFlag=true] [L93] 1 pendingIo := pendingIo - 1; [L94] COND TRUE 1 pendingIo == 0 [L95] 1 stoppingEvent := true; VAL [pendingIo=0, stopped=false, stoppingEvent=true, stoppingFlag=true] [L62] 2 pendingIo := pendingIo + 1; VAL [pendingIo=1, stopped=false, stoppingEvent=true, stoppingFlag=true] [L85] 1 assume stoppingEvent; VAL [pendingIo=1, stopped=false, stoppingEvent=true, stoppingFlag=true] [L86] 1 stopped := true; VAL [pendingIo=1, stopped=true, stoppingEvent=true, stoppingFlag=true] [L39] 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 11 procedures, 68 locations, 9 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2288.4ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 97.9ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2187.9ms, PartialOrderReductionTime: 2155.3ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=12287occurred 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 11 procedures, 68 locations, 9 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 51894.3ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 448.4ms, AutomataDifference: 6984.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 32716.5ms, PartialOrderReductionTime: 32715.2ms, HoareTripleCheckerStatistics: 156 SDtfs, 123 SDslu, 136 SDs, 0 SdLazy, 59 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 59.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 25.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=71681occurred 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: 11371.0ms AutomataMinimizationTime, 3 MinimizatonAttempts, 792 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 4.2ms SsaConstructionTime, 19.8ms SatisfiabilityAnalysisTime, 73.6ms InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 79 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...