/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/bluetooth03.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d310483fe8b4879eee5de19363f50e4b839cc4ec-d310483 [2021-06-24 20:27:17,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-24 20:27:17,402 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-24 20:27:17,437 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-24 20:27:17,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-24 20:27:17,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-24 20:27:17,463 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-24 20:27:17,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-24 20:27:17,465 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-24 20:27:17,468 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-24 20:27:17,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-24 20:27:17,476 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-24 20:27:17,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-24 20:27:17,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-24 20:27:17,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-24 20:27:17,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-24 20:27:17,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-24 20:27:17,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-24 20:27:17,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-24 20:27:17,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-24 20:27:17,511 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 [2021-06-24 20:27:17,532 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-24 20:27:17,532 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-24 20:27:17,532 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-24 20:27:17,532 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-24 20:27:17,533 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-24 20:27:17,534 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-24 20:27:17,534 INFO L138 SettingsManager]: * Use SBE=true [2021-06-24 20:27:17,534 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-24 20:27:17,534 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-24 20:27:17,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-24 20:27:17,534 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-24 20:27:17,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-24 20:27:17,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-24 20:27:17,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-24 20:27:17,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-24 20:27:17,535 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-24 20:27:17,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-24 20:27:17,535 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-24 20:27:17,536 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-24 20:27:17,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-24 20:27:17,536 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-24 20:27:17,536 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-24 20:27:17,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-24 20:27:17,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 20:27:17,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-24 20:27:17,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-24 20:27:17,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-24 20:27:17,537 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-24 20:27:17,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-24 20:27:17,537 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-24 20:27:17,537 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-24 20:27:17,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-24 20:27:17,538 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-06-24 20:27:17,538 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-24 20:27:17,538 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-24 20:27:17,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-24 20:27:17,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-24 20:27:17,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-24 20:27:17,885 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-24 20:27:17,886 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-24 20:27:17,887 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth03.bpl [2021-06-24 20:27:17,887 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth03.bpl' [2021-06-24 20:27:17,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-24 20:27:17,921 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-24 20:27:17,921 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-24 20:27:17,922 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-24 20:27:17,922 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-24 20:27:17,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:27:17" (1/1) ... [2021-06-24 20:27:17,937 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:27:17" (1/1) ... [2021-06-24 20:27:17,950 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-24 20:27:17,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-24 20:27:17,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-24 20:27:17,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-24 20:27:17,960 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:27:17" (1/1) ... [2021-06-24 20:27:17,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:27:17" (1/1) ... [2021-06-24 20:27:17,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:27:17" (1/1) ... [2021-06-24 20:27:17,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:27:17" (1/1) ... [2021-06-24 20:27:17,964 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:27:17" (1/1) ... [2021-06-24 20:27:17,967 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:27:17" (1/1) ... [2021-06-24 20:27:17,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:27:17" (1/1) ... [2021-06-24 20:27:17,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-24 20:27:17,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-24 20:27:17,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-24 20:27:17,972 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-24 20:27:17,973 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:27:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 20:27:18,052 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-06-24 20:27:18,053 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-06-24 20:27:18,053 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-06-24 20:27:18,053 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-06-24 20:27:18,053 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-06-24 20:27:18,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-06-24 20:27:18,053 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-24 20:27:18,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-24 20:27:18,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-24 20:27:18,056 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-24 20:27:18,270 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-24 20:27:18,270 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-06-24 20:27:18,271 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-06-24 20:27:18,272 INFO L202 PluginConnector]: Adding new model bluetooth03.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:27:18 BoogieIcfgContainer [2021-06-24 20:27:18,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-24 20:27:18,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-24 20:27:18,274 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-24 20:27:18,277 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-24 20:27:18,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:27:17" (1/2) ... [2021-06-24 20:27:18,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f8de71 and model type bluetooth03.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 08:27:18, skipping insertion in model container [2021-06-24 20:27:18,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth03.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:27:18" (2/2) ... [2021-06-24 20:27:18,279 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth03.bpl [2021-06-24 20:27:18,285 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-24 20:27:18,285 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-24 20:27:18,285 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-24 20:27:18,286 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-24 20:27:18,315 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-24 20:27:18,336 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 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 [2021-06-24 20:27:18,450 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 20:27:18,450 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 20:27:18,450 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 20:27:18,450 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 20:27:18,451 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 20:27:18,451 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 20:27:18,451 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 20:27:18,451 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-24 20:27:18,729 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/4) [2021-06-24 20:27:18,730 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-24 20:27:18,737 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 20:27:18,737 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 20:27:18,738 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 20:27:18,738 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 20:27:18,738 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 20:27:18,738 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 20:27:18,738 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 20:27:18,738 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork2======== [2021-06-24 20:27:18,745 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:18,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:18,750 INFO L82 PathProgramCache]: Analyzing trace with hash 53189795, now seen corresponding path program 1 times [2021-06-24 20:27:18,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:18,764 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323785780] [2021-06-24 20:27:18,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:18,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 20:27:18,897 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:18,897 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323785780] [2021-06-24 20:27:18,898 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323785780] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:27:18,898 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:27:18,898 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 20:27:18,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577181282] [2021-06-24 20:27:18,903 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 20:27:18,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:18,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 20:27:18,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 20:27:18,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:18,924 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:18,924 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) [2021-06-24 20:27:18,924 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:19,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:19,038 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-24 20:27:19,038 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:19,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:19,043 INFO L82 PathProgramCache]: Analyzing trace with hash 612720348, now seen corresponding path program 1 times [2021-06-24 20:27:19,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:19,043 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737756154] [2021-06-24 20:27:19,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:19,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:19,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 20:27:19,065 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:19,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737756154] [2021-06-24 20:27:19,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737756154] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:27:19,067 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:27:19,067 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-24 20:27:19,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663187757] [2021-06-24 20:27:19,069 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 20:27:19,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:19,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 20:27:19,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 20:27:19,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:19,073 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:19,074 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:27:19,074 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:19,074 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:19,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:19,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:19,170 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-24 20:27:19,170 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:19,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:19,171 INFO L82 PathProgramCache]: Analyzing trace with hash -507924832, now seen corresponding path program 1 times [2021-06-24 20:27:19,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:19,171 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233625608] [2021-06-24 20:27:19,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:19,308 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-24 20:27:19,308 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:19,309 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233625608] [2021-06-24 20:27:19,309 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233625608] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:27:19,309 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:27:19,309 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-24 20:27:19,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901653730] [2021-06-24 20:27:19,310 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-24 20:27:19,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:19,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-24 20:27:19,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-06-24 20:27:19,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:19,312 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:19,312 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:27:19,313 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:19,313 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:19,314 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:19,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:19,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:19,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 20:27:19,513 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-24 20:27:19,513 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:19,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:19,516 INFO L82 PathProgramCache]: Analyzing trace with hash 273994452, now seen corresponding path program 1 times [2021-06-24 20:27:19,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:19,518 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793136793] [2021-06-24 20:27:19,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:19,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:19,708 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-06-24 20:27:19,708 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:19,708 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793136793] [2021-06-24 20:27:19,709 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793136793] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:27:19,709 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783253380] [2021-06-24 20:27:19,709 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 [2021-06-24 20:27:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:19,786 WARN L261 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 44 conjunts are in the unsatisfiable core [2021-06-24 20:27:19,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 20:27:19,999 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-06-24 20:27:19,999 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783253380] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:27:19,999 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 20:27:20,000 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-24 20:27:20,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040357735] [2021-06-24 20:27:20,001 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-24 20:27:20,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:20,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-24 20:27:20,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-06-24 20:27:20,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:20,007 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:20,007 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:27:20,007 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:20,008 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:20,008 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-24 20:27:20,008 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:20,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:20,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:20,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 20:27:20,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-24 20:27:20,549 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:27:20,550 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadThread1of1ForFork2 was SAFE (2/4) [2021-06-24 20:27:20,550 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-06-24 20:27:20,573 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 20:27:20,573 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 20:27:20,574 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 20:27:20,574 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 20:27:20,574 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 20:27:20,574 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 20:27:20,574 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 20:27:20,574 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork3======== [2021-06-24 20:27:20,582 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:20,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:20,583 INFO L82 PathProgramCache]: Analyzing trace with hash -424218018, now seen corresponding path program 1 times [2021-06-24 20:27:20,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:20,583 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078871446] [2021-06-24 20:27:20,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-24 20:27:20,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 20:27:20,608 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:20,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078871446] [2021-06-24 20:27:20,608 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078871446] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:27:20,608 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:27:20,608 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 20:27:20,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741593757] [2021-06-24 20:27:20,609 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 20:27:20,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:20,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 20:27:20,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 20:27:20,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:20,610 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:20,610 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:27:20,610 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:20,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:20,669 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-24 20:27:20,669 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:20,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:20,669 INFO L82 PathProgramCache]: Analyzing trace with hash 413731415, now seen corresponding path program 1 times [2021-06-24 20:27:20,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:20,670 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542975657] [2021-06-24 20:27:20,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:20,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:20,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 20:27:20,694 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:20,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542975657] [2021-06-24 20:27:20,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542975657] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:27:20,694 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:27:20,695 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-24 20:27:20,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261632159] [2021-06-24 20:27:20,695 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 20:27:20,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:20,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 20:27:20,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 20:27:20,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:20,696 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:20,696 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:27:20,696 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:20,696 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:20,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:20,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:20,720 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-24 20:27:20,720 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:20,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:20,720 INFO L82 PathProgramCache]: Analyzing trace with hash 2142862715, now seen corresponding path program 1 times [2021-06-24 20:27:20,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:20,721 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967486113] [2021-06-24 20:27:20,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:20,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 20:27:20,753 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:20,753 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967486113] [2021-06-24 20:27:20,753 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967486113] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:27:20,753 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:27:20,753 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-24 20:27:20,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499709738] [2021-06-24 20:27:20,753 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-24 20:27:20,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:20,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-24 20:27:20,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-24 20:27:20,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:20,754 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:20,755 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:27:20,755 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:20,755 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:20,755 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:20,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:20,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:20,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:27:20,803 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-24 20:27:20,803 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:20,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:20,803 INFO L82 PathProgramCache]: Analyzing trace with hash 2036099807, now seen corresponding path program 1 times [2021-06-24 20:27:20,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:20,804 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987685637] [2021-06-24 20:27:20,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:20,860 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-24 20:27:20,860 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:20,860 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987685637] [2021-06-24 20:27:20,861 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987685637] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:27:20,861 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:27:20,861 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-24 20:27:20,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887405471] [2021-06-24 20:27:20,861 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-24 20:27:20,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:20,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-24 20:27:20,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-06-24 20:27:20,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:20,862 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:20,862 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:27:20,863 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:20,863 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:20,863 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:27:20,863 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:21,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:21,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:21,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:27:21,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 20:27:21,068 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-24 20:27:21,068 INFO L430 AbstractCegarLoop]: === Iteration 5 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:21,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:21,069 INFO L82 PathProgramCache]: Analyzing trace with hash 765806457, now seen corresponding path program 1 times [2021-06-24 20:27:21,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:21,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421406493] [2021-06-24 20:27:21,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:21,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:21,193 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-06-24 20:27:21,193 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:21,193 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421406493] [2021-06-24 20:27:21,193 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421406493] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:27:21,193 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162741375] [2021-06-24 20:27:21,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:27:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:21,252 WARN L261 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 54 conjunts are in the unsatisfiable core [2021-06-24 20:27:21,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 20:27:21,426 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-06-24 20:27:21,426 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162741375] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:27:21,426 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 20:27:21,426 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-24 20:27:21,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949688366] [2021-06-24 20:27:21,427 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-24 20:27:21,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:21,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-24 20:27:21,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-06-24 20:27:21,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:21,428 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:21,428 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:27:21,428 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:21,428 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:21,428 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:27:21,428 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-24 20:27:21,428 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:21,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:21,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:21,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:27:21,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 20:27:21,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-24 20:27:21,924 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:27:21,925 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadThread1of1ForFork3 was SAFE (3/4) [2021-06-24 20:27:21,926 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-24 20:27:21,932 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 20:27:21,932 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 20:27:21,932 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 20:27:21,932 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 20:27:21,932 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 20:27:21,932 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 20:27:21,932 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 20:27:21,932 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork1======== [2021-06-24 20:27:21,934 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:21,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:21,934 INFO L82 PathProgramCache]: Analyzing trace with hash -299385644, now seen corresponding path program 1 times [2021-06-24 20:27:21,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:21,935 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593636654] [2021-06-24 20:27:21,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:21,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 20:27:21,944 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:21,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593636654] [2021-06-24 20:27:21,945 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593636654] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:27:21,945 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:27:21,945 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 20:27:21,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962254749] [2021-06-24 20:27:21,946 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 20:27:21,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:21,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 20:27:21,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 20:27:21,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:21,946 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:21,946 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:27:21,946 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:22,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:22,006 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-24 20:27:22,006 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:22,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:22,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1028569421, now seen corresponding path program 1 times [2021-06-24 20:27:22,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:22,006 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030716418] [2021-06-24 20:27:22,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:22,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:22,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 20:27:22,017 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:22,018 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030716418] [2021-06-24 20:27:22,018 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030716418] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:27:22,018 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:27:22,018 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-24 20:27:22,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963978588] [2021-06-24 20:27:22,018 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 20:27:22,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:22,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 20:27:22,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 20:27:22,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:22,019 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:22,019 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:27:22,019 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:22,019 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:22,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:22,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:22,057 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-24 20:27:22,057 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:22,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:22,057 INFO L82 PathProgramCache]: Analyzing trace with hash 641948970, now seen corresponding path program 1 times [2021-06-24 20:27:22,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:22,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258615544] [2021-06-24 20:27:22,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:22,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:22,126 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-24 20:27:22,127 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:22,127 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258615544] [2021-06-24 20:27:22,127 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258615544] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:27:22,127 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:27:22,127 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-24 20:27:22,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784170443] [2021-06-24 20:27:22,128 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-24 20:27:22,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:22,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-24 20:27:22,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-06-24 20:27:22,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:22,128 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:22,128 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:27:22,128 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:22,129 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:22,129 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:22,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:22,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:22,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 20:27:22,219 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-24 20:27:22,219 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:22,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:22,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1541316500, now seen corresponding path program 1 times [2021-06-24 20:27:22,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:22,220 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544991319] [2021-06-24 20:27:22,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:22,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:22,302 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-06-24 20:27:22,302 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:22,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544991319] [2021-06-24 20:27:22,302 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544991319] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:27:22,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863826795] [2021-06-24 20:27:22,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:27:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:22,342 WARN L261 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 44 conjunts are in the unsatisfiable core [2021-06-24 20:27:22,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 20:27:22,464 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-06-24 20:27:22,464 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863826795] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:27:22,464 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 20:27:22,464 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-24 20:27:22,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079990743] [2021-06-24 20:27:22,465 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-24 20:27:22,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:22,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-24 20:27:22,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-06-24 20:27:22,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:22,466 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:22,466 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 12 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:27:22,466 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:22,466 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:22,466 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-24 20:27:22,466 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:22,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:22,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:22,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 20:27:22,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-24 20:27:22,866 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:27:22,867 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadThread1of1ForFork1 was SAFE (4/4) [2021-06-24 20:27:22,867 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-24 20:27:22,870 INFO L202 PluginConnector]: Adding new model bluetooth03.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 08:27:22 BasicIcfg [2021-06-24 20:27:22,871 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-24 20:27:22,871 INFO L168 Benchmark]: Toolchain (without parser) took 4950.57 ms. Allocated memory was 206.6 MB in the beginning and 294.6 MB in the end (delta: 88.1 MB). Free memory was 185.8 MB in the beginning and 198.6 MB in the end (delta: -12.8 MB). Peak memory consumption was 76.7 MB. Max. memory is 8.0 GB. [2021-06-24 20:27:22,871 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.14 ms. Allocated memory is still 206.6 MB. Free memory is still 186.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-24 20:27:22,871 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.46 ms. Allocated memory is still 206.6 MB. Free memory was 185.7 MB in the beginning and 183.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-24 20:27:22,872 INFO L168 Benchmark]: Boogie Preprocessor took 18.27 ms. Allocated memory is still 206.6 MB. Free memory was 183.9 MB in the beginning and 183.1 MB in the end (delta: 854.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-24 20:27:22,872 INFO L168 Benchmark]: RCFGBuilder took 300.92 ms. Allocated memory is still 206.6 MB. Free memory was 183.0 MB in the beginning and 170.2 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-06-24 20:27:22,872 INFO L168 Benchmark]: TraceAbstraction took 4596.65 ms. Allocated memory was 206.6 MB in the beginning and 294.6 MB in the end (delta: 88.1 MB). Free memory was 169.7 MB in the beginning and 198.6 MB in the end (delta: -28.9 MB). Peak memory consumption was 61.0 MB. Max. memory is 8.0 GB. [2021-06-24 20:27:22,872 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 0.14 ms. Allocated memory is still 206.6 MB. Free memory is still 186.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 29.46 ms. Allocated memory is still 206.6 MB. Free memory was 185.7 MB in the beginning and 183.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 18.27 ms. Allocated memory is still 206.6 MB. Free memory was 183.9 MB in the beginning and 183.1 MB in the end (delta: 854.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 300.92 ms. Allocated memory is still 206.6 MB. Free memory was 183.0 MB in the beginning and 170.2 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4596.65 ms. Allocated memory was 206.6 MB in the beginning and 294.6 MB in the end (delta: 88.1 MB). Free memory was 169.7 MB in the beginning and 198.6 MB in the end (delta: -28.9 MB). Peak memory consumption was 61.0 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: 663, positive: 551, positive conditional: 551, positive unconditional: 0, negative: 112, negative conditional: 112, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 583, positive: 551, positive conditional: 0, positive unconditional: 551, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 108, positive: 101, positive conditional: 0, positive unconditional: 101, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 108, positive: 91, positive conditional: 0, positive unconditional: 91, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 17, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 144, positive: 115, positive conditional: 0, positive unconditional: 115, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 583, positive: 450, positive conditional: 0, positive unconditional: 450, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 108, unknown conditional: 0, unknown unconditional: 108] , Statistics on independence cache: Total cache size (in pairs): 108, Positive cache size: 101, Positive conditional cache size: 0, Positive unconditional cache size: 101, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Independence queries for same thread: 80 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 14670, positive: 12701, positive conditional: 12701, positive unconditional: 0, negative: 1969, negative conditional: 1969, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 13561, positive: 12701, positive conditional: 0, positive unconditional: 12701, negative: 860, negative conditional: 0, negative unconditional: 860, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 261, positive: 239, positive conditional: 0, positive unconditional: 239, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 261, positive: 221, positive conditional: 0, positive unconditional: 221, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 40, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 184, positive: 104, positive conditional: 0, positive unconditional: 104, negative: 80, negative conditional: 0, negative unconditional: 80, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 13561, positive: 12462, positive conditional: 0, positive unconditional: 12462, negative: 838, negative conditional: 0, negative unconditional: 838, unknown: 261, unknown conditional: 0, unknown unconditional: 261] , Statistics on independence cache: Total cache size (in pairs): 261, Positive cache size: 239, Positive conditional cache size: 0, Positive unconditional cache size: 239, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22, Independence queries for same thread: 1109 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 27210, positive: 23821, positive conditional: 23821, positive unconditional: 0, negative: 3389, negative conditional: 3389, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 25419, positive: 23821, positive conditional: 0, positive unconditional: 23821, negative: 1598, negative conditional: 0, negative unconditional: 1598, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 274, positive: 251, positive conditional: 0, positive unconditional: 251, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 274, positive: 231, positive conditional: 0, positive unconditional: 231, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 43, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 98, positive: 59, positive conditional: 0, positive unconditional: 59, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 25419, positive: 23570, positive conditional: 0, positive unconditional: 23570, negative: 1575, negative conditional: 0, negative unconditional: 1575, unknown: 274, unknown conditional: 0, unknown unconditional: 274] , Statistics on independence cache: Total cache size (in pairs): 274, Positive cache size: 251, Positive conditional cache size: 0, Positive unconditional cache size: 251, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Independence queries for same thread: 1791 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 12577, positive: 10867, positive conditional: 10867, positive unconditional: 0, negative: 1710, negative conditional: 1710, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 11630, positive: 10867, positive conditional: 0, positive unconditional: 10867, negative: 763, negative conditional: 0, negative unconditional: 763, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 229, positive: 209, positive conditional: 0, positive unconditional: 209, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 229, positive: 193, positive conditional: 0, positive unconditional: 193, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 36, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 108, positive: 65, positive conditional: 0, positive unconditional: 65, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 11630, positive: 10658, positive conditional: 0, positive unconditional: 10658, negative: 743, negative conditional: 0, negative unconditional: 743, unknown: 229, unknown conditional: 0, unknown unconditional: 229] , Statistics on independence cache: Total cache size (in pairs): 229, Positive cache size: 209, Positive conditional cache size: 0, Positive unconditional cache size: 209, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Independence queries for same thread: 947 - PositiveResult [Line: 34]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 46 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 377.3ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.0ms, PartialOrderReductionTime: 258.7ms, 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 - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: DeviceThreadThread1of1ForFork2 with 1 thread instances CFG has 7 procedures, 46 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1816.9ms, OverallIterations: 4, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1.5ms, PartialOrderReductionTime: 740.5ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 19, 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: 21.7ms SsaConstructionTime, 96.9ms SatisfiabilityAnalysisTime, 533.7ms InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 125 ConstructedInterpolants, 0 QuantifiedInterpolants, 583 SizeOfPredicates, 1 NumberOfNonLiveVariables, 77 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 44/60 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: DeviceThreadThread1of1ForFork3 with 1 thread instances CFG has 7 procedures, 46 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1374.1ms, OverallIterations: 5, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1.4ms, PartialOrderReductionTime: 614.1ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 24, 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: 16.0ms SsaConstructionTime, 49.0ms SatisfiabilityAnalysisTime, 386.6ms InterpolantComputationTime, 163 NumberOfCodeBlocks, 163 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 157 ConstructedInterpolants, 0 QuantifiedInterpolants, 737 SizeOfPredicates, 1 NumberOfNonLiveVariables, 91 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 69/94 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: DeviceThreadThread1of1ForFork1 with 1 thread instances CFG has 7 procedures, 46 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 940.0ms, OverallIterations: 4, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.8ms, PartialOrderReductionTime: 371.2ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 19, 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: 10.1ms SsaConstructionTime, 37.7ms SatisfiabilityAnalysisTime, 258.7ms InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 121 ConstructedInterpolants, 0 QuantifiedInterpolants, 577 SizeOfPredicates, 1 NumberOfNonLiveVariables, 77 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 44/60 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...