/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-DelaySleep-NoLbe-Lockstep.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 10:32:59,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-01 10:32:59,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-01 10:33:00,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-01 10:33:00,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-01 10:33:00,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-01 10:33:00,008 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-01 10:33:00,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-01 10:33:00,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-01 10:33:00,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-01 10:33:00,021 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-01 10:33:00,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-01 10:33:00,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-01 10:33:00,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-01 10:33:00,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-01 10:33:00,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-01 10:33:00,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-01 10:33:00,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-01 10:33:00,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-01 10:33:00,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-01 10:33:00,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-01 10:33:00,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-01 10:33:00,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-01 10:33:00,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-01 10:33:00,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-01 10:33:00,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-01 10:33:00,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-01 10:33:00,051 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-01 10:33:00,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-01 10:33:00,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-01 10:33:00,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-01 10:33:00,053 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-01 10:33:00,054 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-01 10:33:00,055 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-01 10:33:00,056 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-01 10:33:00,056 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-01 10:33:00,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-01 10:33:00,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-01 10:33:00,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-01 10:33:00,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-01 10:33:00,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-01 10:33:00,064 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-DelaySleep-NoLbe-Lockstep.epf [2021-07-01 10:33:00,132 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-01 10:33:00,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-01 10:33:00,133 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-01 10:33:00,133 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-01 10:33:00,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-01 10:33:00,136 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-01 10:33:00,136 INFO L138 SettingsManager]: * Use SBE=true [2021-07-01 10:33:00,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-01 10:33:00,137 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-01 10:33:00,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-01 10:33:00,138 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-01 10:33:00,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-01 10:33:00,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-01 10:33:00,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-01 10:33:00,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-01 10:33:00,139 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-01 10:33:00,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-01 10:33:00,139 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-01 10:33:00,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-01 10:33:00,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-01 10:33:00,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-01 10:33:00,140 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-01 10:33:00,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-01 10:33:00,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-01 10:33:00,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-01 10:33:00,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-01 10:33:00,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-01 10:33:00,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-01 10:33:00,141 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-07-01 10:33:00,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-01 10:33:00,141 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-01 10:33:00,141 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-01 10:33:00,142 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-01 10:33:00,142 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-07-01 10:33:00,142 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-01 10:33:00,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-01 10:33:00,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-01 10:33:00,511 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-01 10:33:00,512 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-01 10:33:00,513 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-01 10:33:00,513 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-serverassert02.bpl [2021-07-01 10:33:00,514 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-serverassert02.bpl' [2021-07-01 10:33:00,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-01 10:33:00,535 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-01 10:33:00,536 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-01 10:33:00,536 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-01 10:33:00,537 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-01 10:33:00,547 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 10:33:00" (1/1) ... [2021-07-01 10:33:00,554 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 10:33:00" (1/1) ... [2021-07-01 10:33:00,567 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-01 10:33:00,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-01 10:33:00,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-01 10:33:00,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-01 10:33:00,576 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 10:33:00" (1/1) ... [2021-07-01 10:33:00,576 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 10:33:00" (1/1) ... [2021-07-01 10:33:00,576 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 10:33:00" (1/1) ... [2021-07-01 10:33:00,577 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 10:33:00" (1/1) ... [2021-07-01 10:33:00,578 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 10:33:00" (1/1) ... [2021-07-01 10:33:00,580 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 10:33:00" (1/1) ... [2021-07-01 10:33:00,581 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 10:33:00" (1/1) ... [2021-07-01 10:33:00,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-01 10:33:00,582 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-01 10:33:00,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-01 10:33:00,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-01 10:33:00,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-serverassert02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:33:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-01 10:33:00,647 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-07-01 10:33:00,647 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-07-01 10:33:00,647 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-07-01 10:33:00,647 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-07-01 10:33:00,647 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-07-01 10:33:00,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-07-01 10:33:00,647 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-01 10:33:00,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-01 10:33:00,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-01 10:33:00,648 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-01 10:33:00,826 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-01 10:33:00,826 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-07-01 10:33:00,827 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-07-01 10:33:00,828 INFO L202 PluginConnector]: Adding new model bluetooth-serverassert02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:33:00 BoogieIcfgContainer [2021-07-01 10:33:00,829 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-01 10:33:00,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-01 10:33:00,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-01 10:33:00,833 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-01 10:33:00,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-serverassert02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:33:00" (1/2) ... [2021-07-01 10:33:00,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c2e987 and model type bluetooth-serverassert02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:33:00, skipping insertion in model container [2021-07-01 10:33:00,834 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 10:33:00" (2/2) ... [2021-07-01 10:33:00,835 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth-serverassert02.bpl [2021-07-01 10:33:00,839 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-01 10:33:00,840 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-01 10:33:00,840 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-01 10:33:00,841 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-01 10:33:00,864 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-01 10:33:00,884 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 10:33:00,959 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-01 10:33:00,959 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-01 10:33:00,959 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-01 10:33:00,959 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-01 10:33:00,959 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-01 10:33:00,959 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-01 10:33:00,960 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-01 10:33:00,960 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ServerThreadThread1of1ForFork0======== [2021-07-01 10:33:01,067 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 10:33:01,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 10:33:01,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1420822439, now seen corresponding path program 1 times [2021-07-01 10:33:01,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 10:33:01,085 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432746571] [2021-07-01 10:33:01,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 10:33:01,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 10:33:01,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 10:33:01,282 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 10:33:01,282 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432746571] [2021-07-01 10:33:01,282 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432746571] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 10:33:01,283 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 10:33:01,283 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-01 10:33:01,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189939393] [2021-07-01 10:33:01,294 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-01 10:33:01,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 10:33:01,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-01 10:33:01,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-01 10:33:01,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 10:33:01,310 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 10:33:01,312 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 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 10:33:01,312 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 10:33:01,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 10:33:01,380 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-01 10:33:01,380 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 10:33:01,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 10:33:01,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1124445116, now seen corresponding path program 1 times [2021-07-01 10:33:01,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 10:33:01,384 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377925289] [2021-07-01 10:33:01,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 10:33:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 10:33:01,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 10:33:01,425 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 10:33:01,425 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377925289] [2021-07-01 10:33:01,426 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377925289] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 10:33:01,426 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 10:33:01,426 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-01 10:33:01,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856512562] [2021-07-01 10:33:01,427 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-01 10:33:01,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 10:33:01,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-01 10:33:01,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-01 10:33:01,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 10:33:01,431 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 10:33:01,431 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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 10:33:01,432 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 10:33:01,432 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 10:33:01,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 10:33:01,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 10:33:01,545 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-01 10:33:01,545 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 10:33:01,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 10:33:01,546 INFO L82 PathProgramCache]: Analyzing trace with hash 716585916, now seen corresponding path program 1 times [2021-07-01 10:33:01,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 10:33:01,547 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622253804] [2021-07-01 10:33:01,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 10:33:01,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 10:33:01,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 10:33:01,627 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 10:33:01,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622253804] [2021-07-01 10:33:01,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622253804] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 10:33:01,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846523220] [2021-07-01 10:33:01,627 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 10:33:01,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 10:33:01,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 9 conjunts are in the unsatisfiable core [2021-07-01 10:33:01,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 10:33:01,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 10:33:01,732 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846523220] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 10:33:01,733 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 10:33:01,733 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3] total 8 [2021-07-01 10:33:01,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851923573] [2021-07-01 10:33:01,733 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-01 10:33:01,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 10:33:01,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-01 10:33:01,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-07-01 10:33:01,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 10:33:01,734 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 10:33:01,735 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:33:01,735 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 10:33:01,735 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 10:33:01,735 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 10:33:02,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 10:33:02,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 10:33:02,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-01 10:33:02,237 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 10:33:02,237 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 10:33:02,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 10:33:02,238 INFO L82 PathProgramCache]: Analyzing trace with hash -615251454, now seen corresponding path program 1 times [2021-07-01 10:33:02,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 10:33:02,238 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332404188] [2021-07-01 10:33:02,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 10:33:02,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 10:33:02,341 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-01 10:33:02,341 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 10:33:02,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332404188] [2021-07-01 10:33:02,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332404188] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 10:33:02,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023910052] [2021-07-01 10:33:02,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 10:33:02,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 10:33:02,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 17 conjunts are in the unsatisfiable core [2021-07-01 10:33:02,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 10:33:02,486 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-01 10:33:02,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023910052] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 10:33:02,486 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 10:33:02,487 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-07-01 10:33:02,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144229810] [2021-07-01 10:33:02,487 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-01 10:33:02,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 10:33:02,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-01 10:33:02,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-01 10:33:02,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 10:33:02,488 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 10:33:02,488 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 10:33:02,488 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 10:33:02,488 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 10:33:02,489 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-01 10:33:02,489 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 10:33:02,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 10:33:02,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 10:33:02,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-01 10:33:02,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 10:33:02,824 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 10:33:02,825 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 10:33:02,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 10:33:02,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1908066645, now seen corresponding path program 1 times [2021-07-01 10:33:02,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 10:33:02,826 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946082436] [2021-07-01 10:33:02,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 10:33:02,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 10:33:02,923 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-01 10:33:02,923 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 10:33:02,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946082436] [2021-07-01 10:33:02,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946082436] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 10:33:02,924 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087271714] [2021-07-01 10:33:02,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 10:33:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 10:33:02,951 WARN L261 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 25 conjunts are in the unsatisfiable core [2021-07-01 10:33:02,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 10:33:03,073 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-07-01 10:33:03,074 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087271714] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 10:33:03,074 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 10:33:03,074 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2021-07-01 10:33:03,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678977863] [2021-07-01 10:33:03,075 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-01 10:33:03,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 10:33:03,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-01 10:33:03,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-07-01 10:33:03,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 10:33:03,078 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 10:33:03,078 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 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 10:33:03,078 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-01 10:33:03,078 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 10:33:03,078 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-01 10:33:03,078 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-01 10:33:03,078 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 10:33:03,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 10:33:03,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 10:33:03,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-01 10:33:03,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 10:33:03,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 10:33:03,452 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 10:33:03,457 INFO L301 ceAbstractionStarter]: Result for error location ServerThreadThread1of1ForFork0 was SAFE (1/2) [2021-07-01 10:33:03,458 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-01 10:33:03,477 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-01 10:33:03,477 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-01 10:33:03,477 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-01 10:33:03,477 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-01 10:33:03,477 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-01 10:33:03,477 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-01 10:33:03,477 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-01 10:33:03,477 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-01 10:33:03,504 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (2/2) [2021-07-01 10:33:03,505 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-01 10:33:03,507 INFO L202 PluginConnector]: Adding new model bluetooth-serverassert02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:33:03 BasicIcfg [2021-07-01 10:33:03,507 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-01 10:33:03,508 INFO L168 Benchmark]: Toolchain (without parser) took 2972.79 ms. Allocated memory was 201.3 MB in the beginning and 268.4 MB in the end (delta: 67.1 MB). Free memory was 181.3 MB in the beginning and 169.7 MB in the end (delta: 11.6 MB). Peak memory consumption was 77.7 MB. Max. memory is 8.0 GB. [2021-07-01 10:33:03,508 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 201.3 MB. Free memory is still 182.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-01 10:33:03,508 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.46 ms. Allocated memory is still 201.3 MB. Free memory was 181.3 MB in the beginning and 179.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-01 10:33:03,509 INFO L168 Benchmark]: Boogie Preprocessor took 13.16 ms. Allocated memory is still 201.3 MB. Free memory was 179.4 MB in the beginning and 178.5 MB in the end (delta: 858.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-01 10:33:03,509 INFO L168 Benchmark]: RCFGBuilder took 246.27 ms. Allocated memory is still 201.3 MB. Free memory was 178.5 MB in the beginning and 165.8 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-07-01 10:33:03,509 INFO L168 Benchmark]: TraceAbstraction took 2677.43 ms. Allocated memory was 201.3 MB in the beginning and 268.4 MB in the end (delta: 67.1 MB). Free memory was 165.4 MB in the beginning and 169.7 MB in the end (delta: -4.3 MB). Peak memory consumption was 61.9 MB. Max. memory is 8.0 GB. [2021-07-01 10:33:03,510 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 201.3 MB. Free memory is still 182.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 31.46 ms. Allocated memory is still 201.3 MB. Free memory was 181.3 MB in the beginning and 179.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 13.16 ms. Allocated memory is still 201.3 MB. Free memory was 179.4 MB in the beginning and 178.5 MB in the end (delta: 858.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 246.27 ms. Allocated memory is still 201.3 MB. Free memory was 178.5 MB in the beginning and 165.8 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2677.43 ms. Allocated memory was 201.3 MB in the beginning and 268.4 MB in the end (delta: 67.1 MB). Free memory was 165.4 MB in the beginning and 169.7 MB in the end (delta: -4.3 MB). Peak memory consumption was 61.9 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: 2445, positive: 2117, positive conditional: 2117, positive unconditional: 0, negative: 328, negative conditional: 328, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 2204, positive: 2117, positive conditional: 2117, positive unconditional: 0, negative: 87, negative conditional: 87, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 2204, positive: 1880, positive conditional: 0, positive unconditional: 1880, negative: 324, negative conditional: 0, negative unconditional: 324, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 99, positive: 85, positive conditional: 0, positive unconditional: 85, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 99, positive: 74, positive conditional: 0, positive unconditional: 74, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 25, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 75, positive: 31, positive conditional: 20, positive unconditional: 11, negative: 44, negative conditional: 30, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 285, positive: 102, positive conditional: 40, positive unconditional: 62, negative: 183, negative conditional: 81, negative unconditional: 102, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2204, positive: 1795, positive conditional: 0, positive unconditional: 1795, negative: 310, negative conditional: 0, negative unconditional: 310, unknown: 99, unknown conditional: 0, unknown unconditional: 99] , Statistics on independence cache: Total cache size (in pairs): 149, Positive cache size: 105, Positive conditional cache size: 20, Positive unconditional cache size: 85, Negative cache size: 44, Negative conditional cache size: 30, Negative unconditional cache size: 14, SemanticConditionEliminator.Independence Queries: [ total: 833, positive: 237, positive conditional: 237, positive unconditional: 0, negative: 596, negative conditional: 266, negative unconditional: 330, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 833, positive: 237, positive conditional: 237, positive unconditional: 0, negative: 596, negative conditional: 266, negative unconditional: 330, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 75, positive: 31, positive conditional: 20, positive unconditional: 11, negative: 44, negative conditional: 30, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 285, positive: 102, positive conditional: 40, positive unconditional: 62, negative: 183, negative conditional: 81, negative unconditional: 102, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 833, positive: 217, positive conditional: 217, positive unconditional: 0, negative: 566, negative conditional: 236, negative unconditional: 330, unknown: 50, unknown conditional: 50, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 149, Positive cache size: 105, Positive conditional cache size: 20, Positive unconditional cache size: 85, Negative cache size: 44, Negative conditional cache size: 30, Negative unconditional cache size: 14, Eliminated conditions: 330, SemanticConditionEliminator.Independence Queries: [ total: 833, positive: 237, positive conditional: 237, positive unconditional: 0, negative: 596, negative conditional: 266, negative unconditional: 330, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 833, positive: 237, positive conditional: 237, positive unconditional: 0, negative: 596, negative conditional: 266, negative unconditional: 330, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 75, positive: 31, positive conditional: 20, positive unconditional: 11, negative: 44, negative conditional: 30, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 285, positive: 102, positive conditional: 40, positive unconditional: 62, negative: 183, negative conditional: 81, negative unconditional: 102, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 833, positive: 217, positive conditional: 217, positive unconditional: 0, negative: 566, negative conditional: 236, negative unconditional: 330, unknown: 50, unknown conditional: 50, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 149, Positive cache size: 105, Positive conditional cache size: 20, Positive unconditional cache size: 85, Negative cache size: 44, Negative conditional cache size: 30, Negative unconditional cache size: 14, Eliminated conditions: 330, SemanticConditionEliminator.Independence Queries: [ total: 833, positive: 237, positive conditional: 237, positive unconditional: 0, negative: 596, negative conditional: 266, negative unconditional: 330, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 833, positive: 237, positive conditional: 237, positive unconditional: 0, negative: 596, negative conditional: 266, negative unconditional: 330, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 75, positive: 31, positive conditional: 20, positive unconditional: 11, negative: 44, negative conditional: 30, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 285, positive: 102, positive conditional: 40, positive unconditional: 62, negative: 183, negative conditional: 81, negative unconditional: 102, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 833, positive: 217, positive conditional: 217, positive unconditional: 0, negative: 566, negative conditional: 236, negative unconditional: 330, unknown: 50, unknown conditional: 50, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 149, Positive cache size: 105, Positive conditional cache size: 20, Positive unconditional cache size: 85, Negative cache size: 44, Negative conditional cache size: 30, Negative unconditional cache size: 14, Eliminated conditions: 330, SemanticConditionEliminator.Independence Queries: [ total: 833, positive: 237, positive conditional: 237, positive unconditional: 0, negative: 596, negative conditional: 266, negative unconditional: 330, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 833, positive: 237, positive conditional: 237, positive unconditional: 0, negative: 596, negative conditional: 266, negative unconditional: 330, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 75, positive: 31, positive conditional: 20, positive unconditional: 11, negative: 44, negative conditional: 30, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 285, positive: 102, positive conditional: 40, positive unconditional: 62, negative: 183, negative conditional: 81, negative unconditional: 102, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 833, positive: 217, positive conditional: 217, positive unconditional: 0, negative: 566, negative conditional: 236, negative unconditional: 330, unknown: 50, unknown conditional: 50, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 149, Positive cache size: 105, Positive conditional cache size: 20, Positive unconditional cache size: 85, Negative cache size: 44, Negative conditional cache size: 30, Negative unconditional cache size: 14, Eliminated conditions: 330, SemanticConditionEliminator.Independence Queries: [ total: 833, positive: 237, positive conditional: 237, positive unconditional: 0, negative: 596, negative conditional: 266, negative unconditional: 330, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 833, positive: 237, positive conditional: 237, positive unconditional: 0, negative: 596, negative conditional: 266, negative unconditional: 330, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 75, positive: 31, positive conditional: 20, positive unconditional: 11, negative: 44, negative conditional: 30, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 285, positive: 102, positive conditional: 40, positive unconditional: 62, negative: 183, negative conditional: 81, negative unconditional: 102, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 833, positive: 217, positive conditional: 217, positive unconditional: 0, negative: 566, negative conditional: 236, negative unconditional: 330, unknown: 50, unknown conditional: 50, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 149, Positive cache size: 105, Positive conditional cache size: 20, Positive unconditional cache size: 85, Negative cache size: 44, Negative conditional cache size: 30, Negative unconditional cache size: 14, Eliminated conditions: 330 ], Maximal queried relation: 5, Independence queries for same thread: 241 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 38, positive: 22, positive conditional: 22, positive unconditional: 0, negative: 16, negative conditional: 16, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 28, positive: 22, positive conditional: 22, positive unconditional: 0, negative: 6, negative conditional: 6, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 28, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 28, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 6, negative conditional: 0, negative unconditional: 6, 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] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 8, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 8, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 20, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 28, positive: 0, positive conditional: 0, positive unconditional: 0, 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: 22, Positive conditional cache size: 0, Positive unconditional cache size: 22, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 ], Maximal queried relation: 0, Independence queries for same thread: 10 - 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: 2557.9ms, OverallIterations: 5, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.1ms, PartialOrderReductionTime: 832.7ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 30, 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: 30.7ms SsaConstructionTime, 76.3ms SatisfiabilityAnalysisTime, 684.7ms InterpolantComputationTime, 149 NumberOfCodeBlocks, 149 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 141 ConstructedInterpolants, 0 QuantifiedInterpolants, 676 SizeOfPredicates, 0 NumberOfNonLiveVariables, 113 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 9/22 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: 44.6ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.8ms, PartialOrderReductionTime: 25.5ms, 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...