/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.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-customized04.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-1c3aa5735269c4be989a50fc1da9ea7b9492ef29-1c3aa57 [2021-07-01 09:25:03,578 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-01 09:25:03,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-01 09:25:03,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-01 09:25:03,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-01 09:25:03,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-01 09:25:03,614 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-01 09:25:03,615 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-01 09:25:03,616 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-01 09:25:03,616 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-01 09:25:03,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-01 09:25:03,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-01 09:25:03,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-01 09:25:03,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-01 09:25:03,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-01 09:25:03,631 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-01 09:25:03,637 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-01 09:25:03,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-01 09:25:03,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-01 09:25:03,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-01 09:25:03,653 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.epf [2021-07-01 09:25:03,679 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-01 09:25:03,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-01 09:25:03,680 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-01 09:25:03,680 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-01 09:25:03,682 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-01 09:25:03,682 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-01 09:25:03,682 INFO L138 SettingsManager]: * Use SBE=true [2021-07-01 09:25:03,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-01 09:25:03,683 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-01 09:25:03,683 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-01 09:25:03,683 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-01 09:25:03,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-01 09:25:03,684 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-01 09:25:03,684 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-01 09:25:03,684 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-01 09:25:03,684 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-01 09:25:03,684 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-01 09:25:03,684 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-01 09:25:03,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-01 09:25:03,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-01 09:25:03,685 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-01 09:25:03,685 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-01 09:25:03,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-01 09:25:03,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-01 09:25:03,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-01 09:25:03,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-01 09:25:03,685 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-01 09:25:03,685 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-01 09:25:03,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-01 09:25:03,685 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-01 09:25:03,686 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-01 09:25:03,686 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-01 09:25:04,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-01 09:25:04,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-01 09:25:04,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-01 09:25:04,049 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-01 09:25:04,054 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-01 09:25:04,055 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-customized04.bpl [2021-07-01 09:25:04,056 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-customized04.bpl' [2021-07-01 09:25:04,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-01 09:25:04,096 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-01 09:25:04,111 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-01 09:25:04,111 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-01 09:25:04,112 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-01 09:25:04,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-customized04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:04" (1/1) ... [2021-07-01 09:25:04,126 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-customized04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:04" (1/1) ... [2021-07-01 09:25:04,148 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-01 09:25:04,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-01 09:25:04,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-01 09:25:04,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-01 09:25:04,157 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-customized04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:04" (1/1) ... [2021-07-01 09:25:04,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-customized04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:04" (1/1) ... [2021-07-01 09:25:04,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-customized04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:04" (1/1) ... [2021-07-01 09:25:04,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-customized04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:04" (1/1) ... [2021-07-01 09:25:04,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-customized04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:04" (1/1) ... [2021-07-01 09:25:04,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-customized04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:04" (1/1) ... [2021-07-01 09:25:04,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-customized04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:04" (1/1) ... [2021-07-01 09:25:04,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-01 09:25:04,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-01 09:25:04,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-01 09:25:04,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-01 09:25:04,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-customized04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-01 09:25:04,234 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThreadWithAssert given in one single declaration [2021-07-01 09:25:04,235 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThreadWithAssert [2021-07-01 09:25:04,235 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThreadWithAssert [2021-07-01 09:25:04,235 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-07-01 09:25:04,235 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-07-01 09:25:04,235 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-07-01 09:25:04,235 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-07-01 09:25:04,235 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-07-01 09:25:04,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-07-01 09:25:04,235 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-01 09:25:04,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-01 09:25:04,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-01 09:25:04,236 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-01 09:25:04,397 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-01 09:25:04,397 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-07-01 09:25:04,398 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadWithAssertEXIT is neither atomic block end nor error location. [2021-07-01 09:25:04,398 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-07-01 09:25:04,399 INFO L202 PluginConnector]: Adding new model bluetooth-customized04.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 09:25:04 BoogieIcfgContainer [2021-07-01 09:25:04,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-01 09:25:04,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-01 09:25:04,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-01 09:25:04,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-01 09:25:04,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-customized04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:04" (1/2) ... [2021-07-01 09:25:04,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@da27a54 and model type bluetooth-customized04.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 09:25:04, skipping insertion in model container [2021-07-01 09:25:04,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-customized04.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 09:25:04" (2/2) ... [2021-07-01 09:25:04,406 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth-customized04.bpl [2021-07-01 09:25:04,410 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-01 09:25:04,410 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-01 09:25:04,410 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-01 09:25:04,411 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-01 09:25:04,439 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-01 09:25:04,455 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-07-01 09:25:04,470 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-01 09:25:04,470 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-01 09:25:04,470 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-01 09:25:04,471 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-01 09:25:04,471 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-01 09:25:04,471 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-01 09:25:04,471 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-01 09:25:04,471 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-01 09:25:04,478 INFO L112 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 34 transitions, 93 flow [2021-07-01 09:25:04,727 INFO L134 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2021 states, 399 states have (on average 3.711779448621554) internal successors, (1481), 400 states have internal predecessors, (1481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:25:04,730 INFO L276 IsEmpty]: Start isEmpty. Operand has 2021 states, 399 states have (on average 3.711779448621554) internal successors, (1481), 400 states have internal predecessors, (1481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:25:04,747 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-01 09:25:04,749 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/2) [2021-07-01 09:25:04,750 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-01 09:25:04,760 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-01 09:25:04,761 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-01 09:25:04,761 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-01 09:25:04,761 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-01 09:25:04,761 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-01 09:25:04,761 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-01 09:25:04,761 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-01 09:25:04,761 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadWithAssertThread1of1ForFork1======== [2021-07-01 09:25:04,762 INFO L112 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 34 transitions, 93 flow [2021-07-01 09:25:04,877 INFO L134 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2021 states, 1618 states have (on average 5.139678615574784) internal successors, (8316), 1618 states have internal predecessors, (8316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:25:04,886 INFO L276 IsEmpty]: Start isEmpty. Operand has 2021 states, 1618 states have (on average 5.139678615574784) internal successors, (8316), 1618 states have internal predecessors, (8316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:25:04,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-07-01 09:25:04,887 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 09:25:04,888 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 09:25:04,888 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:25:04,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:25:04,892 INFO L82 PathProgramCache]: Analyzing trace with hash -881879959, now seen corresponding path program 1 times [2021-07-01 09:25:04,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:25:04,898 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739593144] [2021-07-01 09:25:04,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:25:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:25:05,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 09:25:05,044 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:25:05,044 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739593144] [2021-07-01 09:25:05,045 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739593144] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 09:25:05,045 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 09:25:05,045 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-01 09:25:05,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127365137] [2021-07-01 09:25:05,048 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-01 09:25:05,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:25:05,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-01 09:25:05,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-07-01 09:25:05,070 INFO L87 Difference]: Start difference. First operand has 2021 states, 1618 states have (on average 5.139678615574784) internal successors, (8316), 1618 states have internal predecessors, (8316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:25:05,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-01 09:25:05,239 INFO L93 Difference]: Finished difference Result 3477 states and 18034 transitions. [2021-07-01 09:25:05,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-01 09:25:05,241 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2021-07-01 09:25:05,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-01 09:25:05,296 INFO L225 Difference]: With dead ends: 3477 [2021-07-01 09:25:05,297 INFO L226 Difference]: Without dead ends: 3477 [2021-07-01 09:25:05,301 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-07-01 09:25:05,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3477 states. [2021-07-01 09:25:05,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3477 to 3381. [2021-07-01 09:25:05,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3381 states, 3380 states have (on average 5.226627218934912) internal successors, (17666), 3380 states have internal predecessors, (17666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:25:05,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3381 states to 3381 states and 17666 transitions. [2021-07-01 09:25:05,563 INFO L78 Accepts]: Start accepts. Automaton has 3381 states and 17666 transitions. Word has length 8 [2021-07-01 09:25:05,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-01 09:25:05,563 INFO L482 AbstractCegarLoop]: Abstraction has 3381 states and 17666 transitions. [2021-07-01 09:25:05,563 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:25:05,564 INFO L276 IsEmpty]: Start isEmpty. Operand 3381 states and 17666 transitions. [2021-07-01 09:25:05,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-07-01 09:25:05,564 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 09:25:05,564 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 09:25:05,565 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-01 09:25:05,565 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:25:05,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:25:05,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1385032344, now seen corresponding path program 1 times [2021-07-01 09:25:05,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:25:05,572 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100900192] [2021-07-01 09:25:05,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:25:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:25:05,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 09:25:05,650 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:25:05,650 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100900192] [2021-07-01 09:25:05,650 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100900192] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 09:25:05,650 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 09:25:05,650 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-01 09:25:05,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459936159] [2021-07-01 09:25:05,651 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-01 09:25:05,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:25:05,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-01 09:25:05,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-01 09:25:05,654 INFO L87 Difference]: Start difference. First operand 3381 states and 17666 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) 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) [2021-07-01 09:25:05,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-01 09:25:05,702 INFO L93 Difference]: Finished difference Result 2961 states and 12721 transitions. [2021-07-01 09:25:05,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 09:25:05,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) 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 [2021-07-01 09:25:05,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-01 09:25:05,713 INFO L225 Difference]: With dead ends: 2961 [2021-07-01 09:25:05,714 INFO L226 Difference]: Without dead ends: 1563 [2021-07-01 09:25:05,715 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-01 09:25:05,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2021-07-01 09:25:05,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1563. [2021-07-01 09:25:05,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1562 states have (on average 4.090909090909091) internal successors, (6390), 1562 states have internal predecessors, (6390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:25:05,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 6390 transitions. [2021-07-01 09:25:05,765 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 6390 transitions. Word has length 10 [2021-07-01 09:25:05,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-01 09:25:05,765 INFO L482 AbstractCegarLoop]: Abstraction has 1563 states and 6390 transitions. [2021-07-01 09:25:05,765 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.3333333333333335) 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) [2021-07-01 09:25:05,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 6390 transitions. [2021-07-01 09:25:05,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-07-01 09:25:05,766 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 09:25:05,767 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 09:25:05,767 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-01 09:25:05,767 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:25:05,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:25:05,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1834668824, now seen corresponding path program 1 times [2021-07-01 09:25:05,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:25:05,768 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382788992] [2021-07-01 09:25:05,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:25:05,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:25:05,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 09:25:05,805 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:25:05,805 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382788992] [2021-07-01 09:25:05,805 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382788992] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 09:25:05,805 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 09:25:05,805 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-01 09:25:05,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888082509] [2021-07-01 09:25:05,806 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-01 09:25:05,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:25:05,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-01 09:25:05,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-07-01 09:25:05,807 INFO L87 Difference]: Start difference. First operand 1563 states and 6390 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 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 09:25:05,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-01 09:25:05,951 INFO L93 Difference]: Finished difference Result 3078 states and 12539 transitions. [2021-07-01 09:25:05,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:25:05,952 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 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 09:25:05,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-01 09:25:05,970 INFO L225 Difference]: With dead ends: 3078 [2021-07-01 09:25:05,970 INFO L226 Difference]: Without dead ends: 2550 [2021-07-01 09:25:05,970 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.7ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-07-01 09:25:05,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2550 states. [2021-07-01 09:25:06,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2550 to 1645. [2021-07-01 09:25:06,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1644 states have (on average 4.135644768856448) internal successors, (6799), 1644 states have internal predecessors, (6799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:25:06,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 6799 transitions. [2021-07-01 09:25:06,036 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 6799 transitions. Word has length 13 [2021-07-01 09:25:06,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-01 09:25:06,037 INFO L482 AbstractCegarLoop]: Abstraction has 1645 states and 6799 transitions. [2021-07-01 09:25:06,037 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 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 09:25:06,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 6799 transitions. [2021-07-01 09:25:06,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-01 09:25:06,039 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 09:25:06,039 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 09:25:06,040 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-01 09:25:06,040 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:25:06,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:25:06,041 INFO L82 PathProgramCache]: Analyzing trace with hash 118836002, now seen corresponding path program 1 times [2021-07-01 09:25:06,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:25:06,041 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639102516] [2021-07-01 09:25:06,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:25:06,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:25:06,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 09:25:06,093 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:25:06,093 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639102516] [2021-07-01 09:25:06,093 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639102516] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 09:25:06,093 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 09:25:06,094 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-01 09:25:06,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555958737] [2021-07-01 09:25:06,094 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-01 09:25:06,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:25:06,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-01 09:25:06,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-07-01 09:25:06,095 INFO L87 Difference]: Start difference. First operand 1645 states and 6799 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:25:06,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-01 09:25:06,209 INFO L93 Difference]: Finished difference Result 3105 states and 12765 transitions. [2021-07-01 09:25:06,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 09:25:06,209 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-07-01 09:25:06,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-01 09:25:06,224 INFO L225 Difference]: With dead ends: 3105 [2021-07-01 09:25:06,224 INFO L226 Difference]: Without dead ends: 2116 [2021-07-01 09:25:06,225 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.2ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-07-01 09:25:06,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2116 states. [2021-07-01 09:25:06,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2116 to 1401. [2021-07-01 09:25:06,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 1400 states have (on average 4.166428571428572) internal successors, (5833), 1400 states have internal predecessors, (5833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:25:06,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 5833 transitions. [2021-07-01 09:25:06,266 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 5833 transitions. Word has length 16 [2021-07-01 09:25:06,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-01 09:25:06,267 INFO L482 AbstractCegarLoop]: Abstraction has 1401 states and 5833 transitions. [2021-07-01 09:25:06,267 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:25:06,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 5833 transitions. [2021-07-01 09:25:06,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-07-01 09:25:06,270 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 09:25:06,270 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 09:25:06,270 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-01 09:25:06,270 INFO L430 AbstractCegarLoop]: === Iteration 5 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:25:06,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:25:06,270 INFO L82 PathProgramCache]: Analyzing trace with hash -507026884, now seen corresponding path program 1 times [2021-07-01 09:25:06,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:25:06,271 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880513425] [2021-07-01 09:25:06,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:25:06,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:25:06,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 09:25:06,346 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:25:06,346 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880513425] [2021-07-01 09:25:06,346 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880513425] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 09:25:06,346 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 09:25:06,346 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-01 09:25:06,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496230627] [2021-07-01 09:25:06,346 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-01 09:25:06,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:25:06,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-01 09:25:06,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-07-01 09:25:06,347 INFO L87 Difference]: Start difference. First operand 1401 states and 5833 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:25:06,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-01 09:25:06,438 INFO L93 Difference]: Finished difference Result 1077 states and 4375 transitions. [2021-07-01 09:25:06,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:25:06,439 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 19 [2021-07-01 09:25:06,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-01 09:25:06,439 INFO L225 Difference]: With dead ends: 1077 [2021-07-01 09:25:06,439 INFO L226 Difference]: Without dead ends: 0 [2021-07-01 09:25:06,440 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.4ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-07-01 09:25:06,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-01 09:25:06,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-01 09:25:06,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:25:06,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-01 09:25:06,440 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-07-01 09:25:06,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-01 09:25:06,441 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-01 09:25:06,441 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:25:06,441 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-01 09:25:06,441 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-01 09:25:06,441 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-01 09:25:06,442 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadWithAssertThread1of1ForFork1 was SAFE (2/2) [2021-07-01 09:25:06,442 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-01 09:25:06,481 INFO L202 PluginConnector]: Adding new model bluetooth-customized04.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 09:25:06 BasicIcfg [2021-07-01 09:25:06,481 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-01 09:25:06,482 INFO L168 Benchmark]: Toolchain (without parser) took 2386.28 ms. Allocated memory was 176.2 MB in the beginning and 263.2 MB in the end (delta: 87.0 MB). Free memory was 154.8 MB in the beginning and 223.1 MB in the end (delta: -68.4 MB). Peak memory consumption was 150.3 MB. Max. memory is 8.0 GB. [2021-07-01 09:25:06,482 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 176.2 MB. Free memory is still 155.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-01 09:25:06,483 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.52 ms. Allocated memory is still 176.2 MB. Free memory was 154.7 MB in the beginning and 153.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-01 09:25:06,485 INFO L168 Benchmark]: Boogie Preprocessor took 17.11 ms. Allocated memory is still 176.2 MB. Free memory was 152.9 MB in the beginning and 152.0 MB in the end (delta: 873.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-01 09:25:06,485 INFO L168 Benchmark]: RCFGBuilder took 231.92 ms. Allocated memory is still 176.2 MB. Free memory was 151.9 MB in the beginning and 137.7 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-07-01 09:25:06,488 INFO L168 Benchmark]: TraceAbstraction took 2080.01 ms. Allocated memory was 176.2 MB in the beginning and 263.2 MB in the end (delta: 87.0 MB). Free memory was 137.2 MB in the beginning and 223.1 MB in the end (delta: -85.9 MB). Peak memory consumption was 132.5 MB. Max. memory is 8.0 GB. [2021-07-01 09:25:06,491 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 0.09 ms. Allocated memory is still 176.2 MB. Free memory is still 155.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 37.52 ms. Allocated memory is still 176.2 MB. Free memory was 154.7 MB in the beginning and 153.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 17.11 ms. Allocated memory is still 176.2 MB. Free memory was 152.9 MB in the beginning and 152.0 MB in the end (delta: 873.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 231.92 ms. Allocated memory is still 176.2 MB. Free memory was 151.9 MB in the beginning and 137.7 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2080.01 ms. Allocated memory was 176.2 MB in the beginning and 263.2 MB in the end (delta: 87.0 MB). Free memory was 137.2 MB in the beginning and 223.1 MB in the end (delta: -85.9 MB). Peak memory consumption was 132.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 37]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 9 procedures, 50 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 279.1ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 19.6ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 256.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2021occurred 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 9 procedures, 50 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1680.8ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 14.8ms, AutomataDifference: 699.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 116.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 167 SDtfs, 207 SDslu, 172 SDs, 0 SdLazy, 238 SolverSat, 96 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 258.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 76.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3381occurred in iteration=1, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 401.7ms AutomataMinimizationTime, 5 MinimizatonAttempts, 1716 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 16.1ms SsaConstructionTime, 45.8ms SatisfiabilityAnalysisTime, 204.6ms InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 61 ConstructedInterpolants, 0 QuantifiedInterpolants, 165 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...