/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-NewStates.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth02.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d310483fe8b4879eee5de19363f50e4b839cc4ec-d310483 [2021-06-24 18:38:59,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-24 18:38:59,455 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-24 18:38:59,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-24 18:38:59,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-24 18:38:59,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-24 18:38:59,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-24 18:38:59,506 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-24 18:38:59,508 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-24 18:38:59,513 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-24 18:38:59,513 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-24 18:38:59,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-24 18:38:59,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-24 18:38:59,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-24 18:38:59,518 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-24 18:38:59,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-24 18:38:59,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-24 18:38:59,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-24 18:38:59,525 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-24 18:38:59,530 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-24 18:38:59,532 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-24 18:38:59,533 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-24 18:38:59,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-24 18:38:59,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-24 18:38:59,542 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-24 18:38:59,557 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-NewStates.epf [2021-06-24 18:38:59,602 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-24 18:38:59,602 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-24 18:38:59,604 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-24 18:38:59,605 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-24 18:38:59,605 INFO L138 SettingsManager]: * Use SBE=true [2021-06-24 18:38:59,605 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-24 18:38:59,605 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-24 18:38:59,605 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-24 18:38:59,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-24 18:38:59,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-24 18:38:59,609 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-24 18:38:59,609 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-24 18:38:59,609 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-24 18:38:59,609 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-24 18:38:59,610 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-24 18:38:59,610 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-24 18:38:59,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-24 18:38:59,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-24 18:38:59,610 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-24 18:38:59,610 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-24 18:38:59,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-24 18:38:59,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 18:38:59,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-24 18:38:59,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-24 18:38:59,611 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-24 18:38:59,611 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-24 18:38:59,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-24 18:38:59,612 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-24 18:38:59,612 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-24 18:38:59,612 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-06-24 18:38:59,612 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-24 18:38:59,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-24 18:38:59,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-24 18:38:59,960 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-24 18:38:59,961 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-24 18:38:59,963 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-24 18:38:59,963 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth02.bpl [2021-06-24 18:38:59,964 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth02.bpl' [2021-06-24 18:38:59,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-24 18:38:59,987 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-24 18:38:59,988 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-24 18:38:59,988 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-24 18:38:59,988 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-24 18:39:00,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:38:59" (1/1) ... [2021-06-24 18:39:00,008 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:38:59" (1/1) ... [2021-06-24 18:39:00,020 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-24 18:39:00,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-24 18:39:00,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-24 18:39:00,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-24 18:39:00,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:38:59" (1/1) ... [2021-06-24 18:39:00,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:38:59" (1/1) ... [2021-06-24 18:39:00,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:38:59" (1/1) ... [2021-06-24 18:39:00,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:38:59" (1/1) ... [2021-06-24 18:39:00,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:38:59" (1/1) ... [2021-06-24 18:39:00,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:38:59" (1/1) ... [2021-06-24 18:39:00,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:38:59" (1/1) ... [2021-06-24 18:39:00,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-24 18:39:00,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-24 18:39:00,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-24 18:39:00,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-24 18:39:00,038 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:38:59" (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 18:39:00,114 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-06-24 18:39:00,114 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-06-24 18:39:00,114 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-06-24 18:39:00,115 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-06-24 18:39:00,115 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-06-24 18:39:00,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-06-24 18:39:00,115 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-24 18:39:00,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-24 18:39:00,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-24 18:39:00,116 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 18:39:00,312 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-24 18:39:00,312 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-06-24 18:39:00,322 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-06-24 18:39:00,324 INFO L202 PluginConnector]: Adding new model bluetooth02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 06:39:00 BoogieIcfgContainer [2021-06-24 18:39:00,324 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-24 18:39:00,325 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-24 18:39:00,326 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-24 18:39:00,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-24 18:39:00,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:38:59" (1/2) ... [2021-06-24 18:39:00,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@238435d0 and model type bluetooth02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 06:39:00, skipping insertion in model container [2021-06-24 18:39:00,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 06:39:00" (2/2) ... [2021-06-24 18:39:00,330 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth02.bpl [2021-06-24 18:39:00,346 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-24 18:39:00,347 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-24 18:39:00,347 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-24 18:39:00,347 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-24 18:39:00,383 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-24 18:39:00,400 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-24 18:39:00,416 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 18:39:00,417 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 18:39:00,417 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 18:39:00,417 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 18:39:00,417 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 18:39:00,417 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 18:39:00,418 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 18:39:00,418 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-24 18:39:00,538 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 38 states have (on average 1.3421052631578947) internal successors, (51), 43 states have internal predecessors, (51), 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 18:39:00,543 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-24 18:39:00,543 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/3) [2021-06-24 18:39:00,545 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-24 18:39:00,547 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 18:39:00,548 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 18:39:00,548 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 18:39:00,548 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 18:39:00,548 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 18:39:00,548 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 18:39:00,548 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 18:39:00,550 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork2======== [2021-06-24 18:39:00,827 INFO L276 IsEmpty]: Start isEmpty. Operand has 800 states, 691 states have (on average 2.263386396526773) internal successors, (1564), 799 states have internal predecessors, (1564), 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 18:39:00,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-06-24 18:39:00,828 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:39:00,829 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:39:00,829 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:39:00,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:39:00,837 INFO L82 PathProgramCache]: Analyzing trace with hash 218022983, now seen corresponding path program 1 times [2021-06-24 18:39:00,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:39:00,846 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540405491] [2021-06-24 18:39:00,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:39:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 18:39:00,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:00,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:39:00,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:00,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-24 18:39:00,950 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 18:39:00,950 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 18:39:00,951 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540405491] [2021-06-24 18:39:00,952 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540405491] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 18:39:00,952 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 18:39:00,952 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-24 18:39:00,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419735616] [2021-06-24 18:39:00,955 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 18:39:00,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 18:39:00,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 18:39:00,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 18:39:00,971 INFO L87 Difference]: Start difference. First operand has 800 states, 691 states have (on average 2.263386396526773) internal successors, (1564), 799 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:39:01,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 18:39:01,024 INFO L93 Difference]: Finished difference Result 694 states and 1226 transitions. [2021-06-24 18:39:01,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 18:39:01,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-06-24 18:39:01,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 18:39:01,037 INFO L225 Difference]: With dead ends: 694 [2021-06-24 18:39:01,037 INFO L226 Difference]: Without dead ends: 425 [2021-06-24 18:39:01,038 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 18:39:01,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2021-06-24 18:39:01,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 412. [2021-06-24 18:39:01,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 396 states have (on average 1.8661616161616161) internal successors, (739), 411 states have internal predecessors, (739), 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 18:39:01,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 739 transitions. [2021-06-24 18:39:01,097 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 739 transitions. Word has length 9 [2021-06-24 18:39:01,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 18:39:01,097 INFO L482 AbstractCegarLoop]: Abstraction has 412 states and 739 transitions. [2021-06-24 18:39:01,097 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:39:01,098 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 739 transitions. [2021-06-24 18:39:01,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-06-24 18:39:01,100 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:39:01,100 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:39:01,100 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-24 18:39:01,100 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:39:01,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:39:01,101 INFO L82 PathProgramCache]: Analyzing trace with hash 746144645, now seen corresponding path program 1 times [2021-06-24 18:39:01,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:39:01,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592614949] [2021-06-24 18:39:01,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:39:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 18:39:01,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:01,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-24 18:39:01,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:01,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-24 18:39:01,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:01,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-24 18:39:01,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:01,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-24 18:39:01,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:01,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:39:01,203 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 18:39:01,203 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 18:39:01,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592614949] [2021-06-24 18:39:01,204 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592614949] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 18:39:01,205 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 18:39:01,205 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-24 18:39:01,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137251989] [2021-06-24 18:39:01,207 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-24 18:39:01,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 18:39:01,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-24 18:39:01,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-24 18:39:01,217 INFO L87 Difference]: Start difference. First operand 412 states and 739 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:39:01,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 18:39:01,285 INFO L93 Difference]: Finished difference Result 556 states and 983 transitions. [2021-06-24 18:39:01,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 18:39:01,287 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-06-24 18:39:01,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 18:39:01,291 INFO L225 Difference]: With dead ends: 556 [2021-06-24 18:39:01,291 INFO L226 Difference]: Without dead ends: 514 [2021-06-24 18:39:01,293 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 24.3ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-24 18:39:01,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-06-24 18:39:01,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 489. [2021-06-24 18:39:01,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 473 states have (on average 1.8266384778012685) internal successors, (864), 488 states have internal predecessors, (864), 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 18:39:01,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 864 transitions. [2021-06-24 18:39:01,335 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 864 transitions. Word has length 13 [2021-06-24 18:39:01,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 18:39:01,335 INFO L482 AbstractCegarLoop]: Abstraction has 489 states and 864 transitions. [2021-06-24 18:39:01,335 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:39:01,336 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 864 transitions. [2021-06-24 18:39:01,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-06-24 18:39:01,343 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:39:01,343 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:39:01,343 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-24 18:39:01,344 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:39:01,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:39:01,345 INFO L82 PathProgramCache]: Analyzing trace with hash 608872393, now seen corresponding path program 2 times [2021-06-24 18:39:01,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:39:01,349 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292727333] [2021-06-24 18:39:01,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:39:01,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 18:39:01,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:01,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:39:01,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:01,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:39:01,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:01,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:39:01,381 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 18:39:01,381 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 18:39:01,381 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292727333] [2021-06-24 18:39:01,381 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292727333] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 18:39:01,381 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 18:39:01,381 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 18:39:01,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658286848] [2021-06-24 18:39:01,382 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 18:39:01,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 18:39:01,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 18:39:01,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 18:39:01,383 INFO L87 Difference]: Start difference. First operand 489 states and 864 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:39:01,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 18:39:01,389 INFO L93 Difference]: Finished difference Result 211 states and 296 transitions. [2021-06-24 18:39:01,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 18:39:01,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-06-24 18:39:01,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 18:39:01,390 INFO L225 Difference]: With dead ends: 211 [2021-06-24 18:39:01,391 INFO L226 Difference]: Without dead ends: 129 [2021-06-24 18:39:01,391 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 18:39:01,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-06-24 18:39:01,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 127. [2021-06-24 18:39:01,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 117 states have (on average 1.4957264957264957) internal successors, (175), 126 states have internal predecessors, (175), 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 18:39:01,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 175 transitions. [2021-06-24 18:39:01,395 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 175 transitions. Word has length 13 [2021-06-24 18:39:01,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 18:39:01,395 INFO L482 AbstractCegarLoop]: Abstraction has 127 states and 175 transitions. [2021-06-24 18:39:01,395 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 18:39:01,395 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 175 transitions. [2021-06-24 18:39:01,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-24 18:39:01,396 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:39:01,396 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:39:01,396 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-24 18:39:01,396 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:39:01,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:39:01,397 INFO L82 PathProgramCache]: Analyzing trace with hash 503122356, now seen corresponding path program 1 times [2021-06-24 18:39:01,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:39:01,397 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434338541] [2021-06-24 18:39:01,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:39:01,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 18:39:01,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:01,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-24 18:39:01,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:01,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-24 18:39:01,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:01,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-24 18:39:01,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:01,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-24 18:39:01,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:01,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-24 18:39:01,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:01,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-24 18:39:01,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:01,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:39:01,477 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 18:39:01,477 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 18:39:01,477 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434338541] [2021-06-24 18:39:01,477 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434338541] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 18:39:01,477 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 18:39:01,477 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-24 18:39:01,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286930047] [2021-06-24 18:39:01,478 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-24 18:39:01,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 18:39:01,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-24 18:39:01,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-06-24 18:39:01,479 INFO L87 Difference]: Start difference. First operand 127 states and 175 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:39:01,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 18:39:01,527 INFO L93 Difference]: Finished difference Result 91 states and 139 transitions. [2021-06-24 18:39:01,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 18:39:01,528 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-24 18:39:01,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 18:39:01,528 INFO L225 Difference]: With dead ends: 91 [2021-06-24 18:39:01,528 INFO L226 Difference]: Without dead ends: 0 [2021-06-24 18:39:01,528 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 47.8ms TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-06-24 18:39:01,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-24 18:39:01,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-24 18:39:01,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:39:01,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-24 18:39:01,529 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-06-24 18:39:01,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 18:39:01,529 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-24 18:39:01,529 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:39:01,530 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-24 18:39:01,530 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-24 18:39:01,530 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-24 18:39:01,530 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadThread1of1ForFork2 was SAFE (2/3) [2021-06-24 18:39:01,530 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-24 18:39:01,531 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 18:39:01,531 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 18:39:01,531 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 18:39:01,531 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 18:39:01,531 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 18:39:01,532 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 18:39:01,532 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 18:39:01,532 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork1======== [2021-06-24 18:39:01,641 INFO L276 IsEmpty]: Start isEmpty. Operand has 629 states, 525 states have (on average 2.16) internal successors, (1134), 628 states have internal predecessors, (1134), 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 18:39:01,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-06-24 18:39:01,641 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:39:01,641 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:39:01,641 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:39:01,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:39:01,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1808147887, now seen corresponding path program 1 times [2021-06-24 18:39:01,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:39:01,643 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556672423] [2021-06-24 18:39:01,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:39:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 18:39:01,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:01,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:39:01,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:01,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-24 18:39:01,674 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 18:39:01,675 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 18:39:01,675 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556672423] [2021-06-24 18:39:01,675 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556672423] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 18:39:01,675 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 18:39:01,675 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-24 18:39:01,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236263126] [2021-06-24 18:39:01,676 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 18:39:01,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 18:39:01,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 18:39:01,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 18:39:01,678 INFO L87 Difference]: Start difference. First operand has 629 states, 525 states have (on average 2.16) internal successors, (1134), 628 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 4.0) 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 18:39:01,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 18:39:01,697 INFO L93 Difference]: Finished difference Result 553 states and 938 transitions. [2021-06-24 18:39:01,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 18:39:01,697 INFO L78 Accepts]: Start accepts. 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) Word has length 8 [2021-06-24 18:39:01,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 18:39:01,701 INFO L225 Difference]: With dead ends: 553 [2021-06-24 18:39:01,701 INFO L226 Difference]: Without dead ends: 336 [2021-06-24 18:39:01,701 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 18:39:01,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2021-06-24 18:39:01,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 319. [2021-06-24 18:39:01,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 305 states have (on average 1.7672131147540984) internal successors, (539), 318 states have internal predecessors, (539), 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 18:39:01,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 539 transitions. [2021-06-24 18:39:01,712 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 539 transitions. Word has length 8 [2021-06-24 18:39:01,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 18:39:01,712 INFO L482 AbstractCegarLoop]: Abstraction has 319 states and 539 transitions. [2021-06-24 18:39:01,712 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 18:39:01,712 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 539 transitions. [2021-06-24 18:39:01,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-06-24 18:39:01,713 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:39:01,713 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:39:01,713 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-24 18:39:01,714 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:39:01,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:39:01,714 INFO L82 PathProgramCache]: Analyzing trace with hash 739982189, now seen corresponding path program 1 times [2021-06-24 18:39:01,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:39:01,717 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72143044] [2021-06-24 18:39:01,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:39:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 18:39:01,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:01,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-24 18:39:01,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:01,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-24 18:39:01,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:01,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-24 18:39:01,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:01,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-24 18:39:01,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:01,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:39:01,787 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 18:39:01,788 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 18:39:01,788 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72143044] [2021-06-24 18:39:01,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72143044] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 18:39:01,788 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 18:39:01,788 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-24 18:39:01,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026100704] [2021-06-24 18:39:01,789 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-24 18:39:01,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 18:39:01,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-24 18:39:01,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-24 18:39:01,790 INFO L87 Difference]: Start difference. First operand 319 states and 539 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 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 18:39:01,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 18:39:01,828 INFO L93 Difference]: Finished difference Result 456 states and 768 transitions. [2021-06-24 18:39:01,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 18:39:01,829 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 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) Word has length 12 [2021-06-24 18:39:01,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 18:39:01,832 INFO L225 Difference]: With dead ends: 456 [2021-06-24 18:39:01,832 INFO L226 Difference]: Without dead ends: 417 [2021-06-24 18:39:01,832 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 29.0ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-24 18:39:01,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-06-24 18:39:01,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 393. [2021-06-24 18:39:01,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 379 states have (on average 1.7783641160949868) internal successors, (674), 392 states have internal predecessors, (674), 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 18:39:01,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 674 transitions. [2021-06-24 18:39:01,845 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 674 transitions. Word has length 12 [2021-06-24 18:39:01,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 18:39:01,846 INFO L482 AbstractCegarLoop]: Abstraction has 393 states and 674 transitions. [2021-06-24 18:39:01,846 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 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 18:39:01,846 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 674 transitions. [2021-06-24 18:39:01,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-06-24 18:39:01,847 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:39:01,847 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:39:01,847 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-24 18:39:01,848 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:39:01,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:39:01,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1920022035, now seen corresponding path program 2 times [2021-06-24 18:39:01,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:39:01,848 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670569858] [2021-06-24 18:39:01,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:39:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 18:39:01,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:01,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:39:01,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:01,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:39:01,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:01,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:39:01,880 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 18:39:01,880 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 18:39:01,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670569858] [2021-06-24 18:39:01,880 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670569858] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 18:39:01,880 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 18:39:01,880 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 18:39:01,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945036338] [2021-06-24 18:39:01,881 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 18:39:01,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 18:39:01,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 18:39:01,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 18:39:01,882 INFO L87 Difference]: Start difference. First operand 393 states and 674 transitions. Second operand has 3 states, 3 states have (on average 4.0) 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 18:39:01,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 18:39:01,887 INFO L93 Difference]: Finished difference Result 179 states and 236 transitions. [2021-06-24 18:39:01,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 18:39:01,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) 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) Word has length 12 [2021-06-24 18:39:01,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 18:39:01,888 INFO L225 Difference]: With dead ends: 179 [2021-06-24 18:39:01,888 INFO L226 Difference]: Without dead ends: 122 [2021-06-24 18:39:01,889 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 18:39:01,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-06-24 18:39:01,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2021-06-24 18:39:01,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 110 states have (on average 1.4545454545454546) internal successors, (160), 119 states have internal predecessors, (160), 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 18:39:01,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 160 transitions. [2021-06-24 18:39:01,892 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 160 transitions. Word has length 12 [2021-06-24 18:39:01,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 18:39:01,893 INFO L482 AbstractCegarLoop]: Abstraction has 120 states and 160 transitions. [2021-06-24 18:39:01,893 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) 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 18:39:01,893 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 160 transitions. [2021-06-24 18:39:01,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-24 18:39:01,893 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:39:01,893 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:39:01,894 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-24 18:39:01,894 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:39:01,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:39:01,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1128258401, now seen corresponding path program 1 times [2021-06-24 18:39:01,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:39:01,894 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119071929] [2021-06-24 18:39:01,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:39:01,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 18:39:01,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:01,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-24 18:39:01,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:01,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-24 18:39:01,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:01,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-24 18:39:01,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:01,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-24 18:39:01,938 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:01,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-24 18:39:01,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:01,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-24 18:39:01,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:39:01,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:39:01,944 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 18:39:01,944 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 18:39:01,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119071929] [2021-06-24 18:39:01,944 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119071929] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 18:39:01,945 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 18:39:01,945 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-24 18:39:01,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995242589] [2021-06-24 18:39:01,945 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-24 18:39:01,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 18:39:01,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-24 18:39:01,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-06-24 18:39:01,946 INFO L87 Difference]: Start difference. First operand 120 states and 160 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:39:01,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 18:39:01,970 INFO L93 Difference]: Finished difference Result 84 states and 124 transitions. [2021-06-24 18:39:01,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 18:39:01,971 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-24 18:39:01,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 18:39:01,971 INFO L225 Difference]: With dead ends: 84 [2021-06-24 18:39:01,971 INFO L226 Difference]: Without dead ends: 0 [2021-06-24 18:39:01,971 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 24.1ms TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-06-24 18:39:01,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-24 18:39:01,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-24 18:39:01,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:39:01,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-24 18:39:01,972 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-06-24 18:39:01,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 18:39:01,972 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-24 18:39:01,973 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:39:01,973 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-24 18:39:01,973 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-24 18:39:01,973 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-24 18:39:01,973 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadThread1of1ForFork1 was SAFE (3/3) [2021-06-24 18:39:01,974 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-24 18:39:01,976 INFO L202 PluginConnector]: Adding new model bluetooth02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 06:39:01 BasicIcfg [2021-06-24 18:39:01,976 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-24 18:39:01,977 INFO L168 Benchmark]: Toolchain (without parser) took 1989.69 ms. Allocated memory is still 232.8 MB. Free memory was 213.2 MB in the beginning and 118.6 MB in the end (delta: 94.6 MB). Peak memory consumption was 94.1 MB. Max. memory is 8.0 GB. [2021-06-24 18:39:01,977 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 232.8 MB. Free memory is still 214.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-24 18:39:01,977 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.20 ms. Allocated memory is still 232.8 MB. Free memory was 213.1 MB in the beginning and 211.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-24 18:39:01,978 INFO L168 Benchmark]: Boogie Preprocessor took 14.58 ms. Allocated memory is still 232.8 MB. Free memory was 211.3 MB in the beginning and 210.5 MB in the end (delta: 848.9 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-24 18:39:01,978 INFO L168 Benchmark]: RCFGBuilder took 287.27 ms. Allocated memory is still 232.8 MB. Free memory was 210.4 MB in the beginning and 197.7 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-06-24 18:39:01,978 INFO L168 Benchmark]: TraceAbstraction took 1650.75 ms. Allocated memory is still 232.8 MB. Free memory was 197.2 MB in the beginning and 118.6 MB in the end (delta: 78.6 MB). Peak memory consumption was 78.3 MB. Max. memory is 8.0 GB. [2021-06-24 18:39:01,979 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 232.8 MB. Free memory is still 214.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 32.20 ms. Allocated memory is still 232.8 MB. Free memory was 213.1 MB in the beginning and 211.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 14.58 ms. Allocated memory is still 232.8 MB. Free memory was 211.3 MB in the beginning and 210.5 MB in the end (delta: 848.9 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 287.27 ms. Allocated memory is still 232.8 MB. Free memory was 210.4 MB in the beginning and 197.7 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1650.75 ms. Allocated memory is still 232.8 MB. Free memory was 197.2 MB in the beginning and 118.6 MB in the end (delta: 78.6 MB). Peak memory consumption was 78.3 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: 41, positive: 33, positive conditional: 33, positive unconditional: 0, negative: 8, negative conditional: 8, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 35, positive: 33, positive conditional: 0, positive unconditional: 33, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 30, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 30, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 6, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 53, positive: 41, positive conditional: 0, positive unconditional: 41, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 35, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 30, unknown conditional: 0, unknown unconditional: 30] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 28, Positive conditional cache size: 0, Positive unconditional cache size: 28, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Independence queries for same thread: 6 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 3350, positive: 2809, positive conditional: 2809, positive unconditional: 0, negative: 541, negative conditional: 541, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 3025, positive: 2809, positive conditional: 0, positive unconditional: 2809, negative: 216, negative conditional: 0, negative unconditional: 216, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 158, positive: 142, positive conditional: 0, positive unconditional: 142, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 158, positive: 129, positive conditional: 0, positive unconditional: 129, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 29, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 122, positive: 54, positive conditional: 0, positive unconditional: 54, negative: 67, negative conditional: 0, negative unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3025, positive: 2667, positive conditional: 0, positive unconditional: 2667, negative: 200, negative conditional: 0, negative unconditional: 200, unknown: 158, unknown conditional: 0, unknown unconditional: 158] , Statistics on independence cache: Total cache size (in pairs): 158, Positive cache size: 142, Positive conditional cache size: 0, Positive unconditional cache size: 142, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Independence queries for same thread: 325 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 2519, positive: 2056, positive conditional: 2056, positive unconditional: 0, negative: 463, negative conditional: 463, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 2238, positive: 2056, positive conditional: 0, positive unconditional: 2056, negative: 182, negative conditional: 0, negative unconditional: 182, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 149, positive: 134, positive conditional: 0, positive unconditional: 134, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 149, positive: 122, positive conditional: 0, positive unconditional: 122, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 27, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 63, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2238, positive: 1922, positive conditional: 0, positive unconditional: 1922, negative: 167, negative conditional: 0, negative unconditional: 167, unknown: 149, unknown conditional: 0, unknown unconditional: 149] , Statistics on independence cache: Total cache size (in pairs): 149, Positive cache size: 134, Positive conditional cache size: 0, Positive unconditional cache size: 134, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Independence queries for same thread: 281 - PositiveResult [Line: 33]: 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 6 procedures, 39 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 129.1ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 6.9ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 118.0ms, PartialOrderReductionTime: 107.6ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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 6 procedures, 39 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 982.4ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 14.3ms, AutomataDifference: 226.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 273.0ms, PartialOrderReductionTime: 269.9ms, HoareTripleCheckerStatistics: 82 SDtfs, 69 SDslu, 71 SDs, 0 SdLazy, 52 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 83.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 85.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=800occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 94.3ms AutomataMinimizationTime, 4 MinimizatonAttempts, 40 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 5.4ms SsaConstructionTime, 43.0ms SatisfiabilityAnalysisTime, 212.4ms InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 149 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: DeviceThreadThread1of1ForFork1 with 1 thread instances CFG has 6 procedures, 39 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 441.9ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 3.8ms, AutomataDifference: 102.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 107.4ms, PartialOrderReductionTime: 106.5ms, HoareTripleCheckerStatistics: 83 SDtfs, 67 SDslu, 71 SDs, 0 SdLazy, 51 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 50.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 57.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=629occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 27.0ms AutomataMinimizationTime, 4 MinimizatonAttempts, 43 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 3.5ms SsaConstructionTime, 39.6ms SatisfiabilityAnalysisTime, 127.8ms InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 140 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...