/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-POR-NewStatesSleepUncond-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-serverassert02.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-1c3aa5735269c4be989a50fc1da9ea7b9492ef29-1c3aa57 [2021-07-01 12:04:58,236 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-01 12:04:58,239 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-01 12:04:58,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-01 12:04:58,276 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-01 12:04:58,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-01 12:04:58,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-01 12:04:58,288 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-01 12:04:58,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-01 12:04:58,295 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-01 12:04:58,296 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-01 12:04:58,297 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-01 12:04:58,297 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-01 12:04:58,299 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-01 12:04:58,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-01 12:04:58,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-01 12:04:58,305 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-01 12:04:58,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-01 12:04:58,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-01 12:04:58,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-01 12:04:58,317 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-01 12:04:58,319 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-01 12:04:58,320 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-01 12:04:58,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-01 12:04:58,328 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-01 12:04:58,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-01 12:04:58,333 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-01 12:04:58,334 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-01 12:04:58,335 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-01 12:04:58,336 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-01 12:04:58,336 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-01 12:04:58,337 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-01 12:04:58,345 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-01 12:04:58,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-01 12:04:58,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-01 12:04:58,346 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-01 12:04:58,350 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-POR-NewStatesSleepUncond-NoLbe.epf [2021-07-01 12:04:58,389 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-01 12:04:58,389 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-01 12:04:58,389 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-01 12:04:58,390 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-01 12:04:58,392 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-01 12:04:58,392 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-01 12:04:58,393 INFO L138 SettingsManager]: * Use SBE=true [2021-07-01 12:04:58,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-01 12:04:58,393 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-01 12:04:58,393 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-01 12:04:58,394 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-01 12:04:58,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-01 12:04:58,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-01 12:04:58,394 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-01 12:04:58,395 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-01 12:04:58,395 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-01 12:04:58,395 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-01 12:04:58,395 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-01 12:04:58,395 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-01 12:04:58,395 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-01 12:04:58,395 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-01 12:04:58,395 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-01 12:04:58,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-01 12:04:58,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-01 12:04:58,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-01 12:04:58,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-01 12:04:58,396 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-01 12:04:58,396 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-01 12:04:58,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-01 12:04:58,397 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-01 12:04:58,397 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-01 12:04:58,397 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-01 12:04:58,397 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-07-01 12:04:58,397 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-07-01 12:04:58,398 INFO L138 SettingsManager]: * Use conditional POR in concurrent analysis=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-01 12:04:58,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-01 12:04:58,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-01 12:04:58,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-01 12:04:58,743 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-01 12:04:58,744 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-01 12:04:58,745 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-serverassert02.bpl [2021-07-01 12:04:58,745 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-serverassert02.bpl' [2021-07-01 12:04:58,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-01 12:04:58,769 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-01 12:04:58,770 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-01 12:04:58,770 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-01 12:04:58,771 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-01 12:04:58,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-serverassert02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:04:58" (1/1) ... [2021-07-01 12:04:58,787 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-serverassert02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:04:58" (1/1) ... [2021-07-01 12:04:58,799 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-01 12:04:58,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-01 12:04:58,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-01 12:04:58,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-01 12:04:58,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-serverassert02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:04:58" (1/1) ... [2021-07-01 12:04:58,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-serverassert02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:04:58" (1/1) ... [2021-07-01 12:04:58,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-serverassert02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:04:58" (1/1) ... [2021-07-01 12:04:58,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-serverassert02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:04:58" (1/1) ... [2021-07-01 12:04:58,810 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-serverassert02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:04:58" (1/1) ... [2021-07-01 12:04:58,813 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-serverassert02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:04:58" (1/1) ... [2021-07-01 12:04:58,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-serverassert02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:04:58" (1/1) ... [2021-07-01 12:04:58,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-01 12:04:58,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-01 12:04:58,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-01 12:04:58,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-01 12:04:58,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-serverassert02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:04:58" (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 12:04:58,884 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-07-01 12:04:58,884 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-07-01 12:04:58,884 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-07-01 12:04:58,884 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-07-01 12:04:58,884 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-07-01 12:04:58,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-07-01 12:04:58,884 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-01 12:04:58,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-01 12:04:58,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-01 12:04:58,885 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 12:04:59,129 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-01 12:04:59,130 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-07-01 12:04:59,130 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-07-01 12:04:59,132 INFO L202 PluginConnector]: Adding new model bluetooth-serverassert02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:04:59 BoogieIcfgContainer [2021-07-01 12:04:59,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-01 12:04:59,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-01 12:04:59,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-01 12:04:59,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-01 12:04:59,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-serverassert02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:04:58" (1/2) ... [2021-07-01 12:04:59,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@922c690 and model type bluetooth-serverassert02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:04:59, skipping insertion in model container [2021-07-01 12:04:59,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-serverassert02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:04:59" (2/2) ... [2021-07-01 12:04:59,138 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth-serverassert02.bpl [2021-07-01 12:04:59,143 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-01 12:04:59,143 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-01 12:04:59,143 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-01 12:04:59,144 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-01 12:04:59,167 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-01 12:04:59,187 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-01 12:04:59,238 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-01 12:04:59,238 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-01 12:04:59,238 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-01 12:04:59,239 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-01 12:04:59,239 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-01 12:04:59,239 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-01 12:04:59,239 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-01 12:04:59,239 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ServerThreadThread1of1ForFork0======== [2021-07-01 12:04:59,283 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 12:04:59,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 12:04:59,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1717174572, now seen corresponding path program 1 times [2021-07-01 12:04:59,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 12:04:59,301 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548686908] [2021-07-01 12:04:59,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 12:04:59,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:04:59,495 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 12:04:59,495 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 12:04:59,495 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548686908] [2021-07-01 12:04:59,496 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548686908] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 12:04:59,496 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 12:04:59,496 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-01 12:04:59,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407497586] [2021-07-01 12:04:59,503 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-01 12:04:59,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 12:04:59,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-01 12:04:59,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-01 12:04:59,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:04:59,525 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 12:04:59,528 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 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 12:04:59,528 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:04:59,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:04:59,627 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-01 12:04:59,627 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 12:04:59,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 12:04:59,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1941989506, now seen corresponding path program 1 times [2021-07-01 12:04:59,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 12:04:59,629 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269329555] [2021-07-01 12:04:59,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 12:04:59,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:04:59,656 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 12:04:59,656 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 12:04:59,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269329555] [2021-07-01 12:04:59,657 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269329555] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 12:04:59,657 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 12:04:59,657 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-01 12:04:59,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205599504] [2021-07-01 12:04:59,658 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-01 12:04:59,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 12:04:59,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-01 12:04:59,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-01 12:04:59,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:04:59,660 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 12:04:59,660 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 12:04:59,660 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:04:59,660 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:04:59,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:04:59,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:04:59,730 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-01 12:04:59,730 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 12:04:59,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 12:04:59,731 INFO L82 PathProgramCache]: Analyzing trace with hash 981905240, now seen corresponding path program 1 times [2021-07-01 12:04:59,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 12:04:59,731 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021684636] [2021-07-01 12:04:59,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 12:04:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:04:59,800 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 12:04:59,801 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 12:04:59,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021684636] [2021-07-01 12:04:59,801 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021684636] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 12:04:59,801 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 12:04:59,801 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-01 12:04:59,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755621565] [2021-07-01 12:04:59,802 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-01 12:04:59,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 12:04:59,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-01 12:04:59,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-07-01 12:04:59,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:04:59,803 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 12:04:59,803 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) 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 12:04:59,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:04:59,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:04:59,804 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:04:59,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:04:59,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:04:59,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:04:59,847 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-01 12:04:59,848 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 12:04:59,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 12:04:59,848 INFO L82 PathProgramCache]: Analyzing trace with hash 981725750, now seen corresponding path program 2 times [2021-07-01 12:04:59,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 12:04:59,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010757506] [2021-07-01 12:04:59,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 12:04:59,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:04:59,918 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 12:04:59,918 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 12:04:59,918 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010757506] [2021-07-01 12:04:59,919 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010757506] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 12:04:59,919 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 12:04:59,919 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-01 12:04:59,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495641447] [2021-07-01 12:04:59,919 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-01 12:04:59,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 12:04:59,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-01 12:04:59,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-07-01 12:04:59,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:04:59,921 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 12:04:59,921 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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 12:04:59,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:04:59,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:04:59,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:04:59,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:05:00,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:05:00,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:05:00,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:05:00,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:05:00,130 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-01 12:05:00,130 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 12:05:00,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 12:05:00,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1990682065, now seen corresponding path program 1 times [2021-07-01 12:05:00,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 12:05:00,131 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059451017] [2021-07-01 12:05:00,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 12:05:00,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:05:00,281 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-07-01 12:05:00,281 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 12:05:00,281 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059451017] [2021-07-01 12:05:00,281 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059451017] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 12:05:00,282 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854594262] [2021-07-01 12:05:00,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 12:05:00,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:05:00,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 25 conjunts are in the unsatisfiable core [2021-07-01 12:05:00,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 12:05:00,625 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-07-01 12:05:00,625 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854594262] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 12:05:00,625 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 12:05:00,625 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-07-01 12:05:00,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899652998] [2021-07-01 12:05:00,626 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-01 12:05:00,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 12:05:00,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-01 12:05:00,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-01 12:05:00,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:05:00,627 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 12:05:00,627 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 12:05:00,627 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:05:00,627 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:05:00,627 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:05:00,628 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:05:00,628 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:05:00,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:05:00,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:05:00,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:05:00,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:05:00,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 12:05:00,923 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 12:05:00,923 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 12:05:00,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 12:05:00,924 INFO L82 PathProgramCache]: Analyzing trace with hash -842817283, now seen corresponding path program 2 times [2021-07-01 12:05:00,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 12:05:00,924 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877263601] [2021-07-01 12:05:00,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 12:05:00,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 12:05:01,036 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-07-01 12:05:01,036 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 12:05:01,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877263601] [2021-07-01 12:05:01,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877263601] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 12:05:01,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93905368] [2021-07-01 12:05:01,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 12:05:01,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-01 12:05:01,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-01 12:05:01,066 WARN L261 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 31 conjunts are in the unsatisfiable core [2021-07-01 12:05:01,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 12:05:01,221 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-07-01 12:05:01,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93905368] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 12:05:01,221 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 12:05:01,221 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-07-01 12:05:01,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565014576] [2021-07-01 12:05:01,222 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-07-01 12:05:01,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 12:05:01,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-07-01 12:05:01,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-07-01 12:05:01,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:05:01,223 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 12:05:01,223 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 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 12:05:01,223 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:05:01,224 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:05:01,224 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:05:01,224 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:05:01,224 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-01 12:05:01,224 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 12:05:01,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:05:01,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 12:05:01,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 12:05:01,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:05:01,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 12:05:01,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 12:05:01,599 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 12:05:01,602 INFO L301 ceAbstractionStarter]: Result for error location ServerThreadThread1of1ForFork0 was SAFE (1/2) [2021-07-01 12:05:01,604 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-01 12:05:01,609 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-01 12:05:01,610 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-01 12:05:01,610 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-01 12:05:01,610 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-01 12:05:01,610 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-01 12:05:01,610 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-01 12:05:01,610 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-01 12:05:01,610 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-01 12:05:01,673 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (2/2) [2021-07-01 12:05:01,673 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-01 12:05:01,675 INFO L202 PluginConnector]: Adding new model bluetooth-serverassert02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 12:05:01 BasicIcfg [2021-07-01 12:05:01,675 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-01 12:05:01,676 INFO L168 Benchmark]: Toolchain (without parser) took 2906.95 ms. Allocated memory is still 178.3 MB. Free memory was 158.1 MB in the beginning and 63.6 MB in the end (delta: 94.5 MB). Peak memory consumption was 94.5 MB. Max. memory is 8.0 GB. [2021-07-01 12:05:01,676 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 178.3 MB. Free memory is still 159.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-01 12:05:01,676 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.30 ms. Allocated memory is still 178.3 MB. Free memory was 158.0 MB in the beginning and 156.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-01 12:05:01,677 INFO L168 Benchmark]: Boogie Preprocessor took 13.78 ms. Allocated memory is still 178.3 MB. Free memory was 156.2 MB in the beginning and 155.4 MB in the end (delta: 849.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-01 12:05:01,677 INFO L168 Benchmark]: RCFGBuilder took 316.87 ms. Allocated memory is still 178.3 MB. Free memory was 155.3 MB in the beginning and 142.6 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-07-01 12:05:01,677 INFO L168 Benchmark]: TraceAbstraction took 2542.31 ms. Allocated memory is still 178.3 MB. Free memory was 142.1 MB in the beginning and 63.6 MB in the end (delta: 78.5 MB). Peak memory consumption was 78.8 MB. Max. memory is 8.0 GB. [2021-07-01 12:05:01,678 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 178.3 MB. Free memory is still 159.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 29.30 ms. Allocated memory is still 178.3 MB. Free memory was 158.0 MB in the beginning and 156.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 13.78 ms. Allocated memory is still 178.3 MB. Free memory was 156.2 MB in the beginning and 155.4 MB in the end (delta: 849.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 316.87 ms. Allocated memory is still 178.3 MB. Free memory was 155.3 MB in the beginning and 142.6 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2542.31 ms. Allocated memory is still 178.3 MB. Free memory was 142.1 MB in the beginning and 63.6 MB in the end (delta: 78.5 MB). Peak memory consumption was 78.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 3888, positive: 2747, positive conditional: 2747, positive unconditional: 0, negative: 1141, negative conditional: 1141, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 3311, positive: 2747, positive conditional: 0, positive unconditional: 2747, negative: 564, negative conditional: 0, negative unconditional: 564, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 96, positive: 79, positive conditional: 0, positive unconditional: 79, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 96, positive: 71, positive conditional: 0, positive unconditional: 71, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 25, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 105, positive: 31, positive conditional: 0, positive unconditional: 31, negative: 74, negative conditional: 0, negative unconditional: 74, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3311, positive: 2668, positive conditional: 0, positive unconditional: 2668, negative: 547, negative conditional: 0, negative unconditional: 547, unknown: 96, unknown conditional: 0, unknown unconditional: 96] , Statistics on independence cache: Total cache size (in pairs): 96, Positive cache size: 79, Positive conditional cache size: 0, Positive unconditional cache size: 79, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Independence queries for same thread: 577 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 44, positive: 28, positive conditional: 28, positive unconditional: 0, negative: 16, negative conditional: 16, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 33, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 28, positive: 23, positive conditional: 0, positive unconditional: 23, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 28, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 8, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 53, positive: 43, positive conditional: 0, positive unconditional: 43, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 33, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 28, unknown conditional: 0, unknown unconditional: 28] , Statistics on independence cache: Total cache size (in pairs): 28, Positive cache size: 23, Positive conditional cache size: 0, Positive unconditional cache size: 23, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Independence queries for same thread: 11 - PositiveResult [Line: 71]: 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: ServerThreadThread1of1ForFork0 with 1 thread instances CFG has 6 procedures, 37 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2401.3ms, OverallIterations: 6, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 14.4ms, PartialOrderReductionTime: 676.1ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 19.8ms SsaConstructionTime, 84.4ms SatisfiabilityAnalysisTime, 856.2ms InterpolantComputationTime, 155 NumberOfCodeBlocks, 155 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 147 ConstructedInterpolants, 0 QuantifiedInterpolants, 748 SizeOfPredicates, 2 NumberOfNonLiveVariables, 107 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 27/46 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 - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 6 procedures, 37 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 67.2ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.7ms, PartialOrderReductionTime: 59.4ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...