/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-Delay.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 18:26:12,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-24 18:26:12,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-24 18:26:12,217 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-24 18:26:12,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-24 18:26:12,220 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-24 18:26:12,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-24 18:26:12,228 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-24 18:26:12,230 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-24 18:26:12,234 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-24 18:26:12,235 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-24 18:26:12,236 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-24 18:26:12,236 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-24 18:26:12,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-24 18:26:12,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-24 18:26:12,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-24 18:26:12,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-24 18:26:12,244 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-24 18:26:12,246 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-24 18:26:12,252 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-24 18:26:12,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-24 18:26:12,254 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-24 18:26:12,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-24 18:26:12,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-24 18:26:12,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-24 18:26:12,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-24 18:26:12,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-24 18:26:12,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-24 18:26:12,278 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-Delay.epf [2021-06-24 18:26:12,314 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-24 18:26:12,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-24 18:26:12,317 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-24 18:26:12,318 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-24 18:26:12,318 INFO L138 SettingsManager]: * Use SBE=true [2021-06-24 18:26:12,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-24 18:26:12,318 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-24 18:26:12,318 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-24 18:26:12,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-24 18:26:12,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-24 18:26:12,319 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-24 18:26:12,319 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-24 18:26:12,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-24 18:26:12,320 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-24 18:26:12,320 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-24 18:26:12,320 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-24 18:26:12,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-24 18:26:12,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-24 18:26:12,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-24 18:26:12,321 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-24 18:26:12,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-24 18:26:12,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 18:26:12,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-24 18:26:12,334 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-24 18:26:12,334 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-24 18:26:12,334 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-24 18:26:12,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-24 18:26:12,334 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-24 18:26:12,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-24 18:26:12,335 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-24 18:26:12,335 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-24 18:26:12,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-24 18:26:12,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-24 18:26:12,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-24 18:26:12,708 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-24 18:26:12,709 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-24 18:26:12,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth02.bpl [2021-06-24 18:26:12,711 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth02.bpl' [2021-06-24 18:26:12,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-24 18:26:12,736 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-24 18:26:12,737 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-24 18:26:12,737 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-24 18:26:12,737 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-24 18:26:12,749 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 06:26:12" (1/1) ... [2021-06-24 18:26:12,756 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 06:26:12" (1/1) ... [2021-06-24 18:26:12,770 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-24 18:26:12,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-24 18:26:12,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-24 18:26:12,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-24 18:26:12,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:26:12" (1/1) ... [2021-06-24 18:26:12,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:26:12" (1/1) ... [2021-06-24 18:26:12,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:26:12" (1/1) ... [2021-06-24 18:26:12,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:26:12" (1/1) ... [2021-06-24 18:26:12,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:26:12" (1/1) ... [2021-06-24 18:26:12,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:26:12" (1/1) ... [2021-06-24 18:26:12,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:26:12" (1/1) ... [2021-06-24 18:26:12,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-24 18:26:12,787 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-24 18:26:12,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-24 18:26:12,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-24 18:26:12,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:26:12" (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 18:26:12,854 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-06-24 18:26:12,856 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-06-24 18:26:12,856 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-06-24 18:26:12,856 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-06-24 18:26:12,856 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-06-24 18:26:12,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-06-24 18:26:12,857 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-24 18:26:12,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-24 18:26:12,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-24 18:26:12,858 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 18:26:13,069 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-24 18:26:13,070 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-06-24 18:26:13,070 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-06-24 18:26:13,072 INFO L202 PluginConnector]: Adding new model bluetooth02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 06:26:13 BoogieIcfgContainer [2021-06-24 18:26:13,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-24 18:26:13,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-24 18:26:13,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-24 18:26:13,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-24 18:26:13,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 06:26:12" (1/2) ... [2021-06-24 18:26:13,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d4400b4 and model type bluetooth02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 06:26:13, skipping insertion in model container [2021-06-24 18:26:13,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 06:26:13" (2/2) ... [2021-06-24 18:26:13,078 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth02.bpl [2021-06-24 18:26:13,082 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-24 18:26:13,082 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-24 18:26:13,082 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-24 18:26:13,083 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-24 18:26:13,131 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-24 18:26:13,151 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-24 18:26:13,177 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 18:26:13,177 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 18:26:13,177 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 18:26:13,177 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 18:26:13,177 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 18:26:13,177 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 18:26:13,177 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 18:26:13,178 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-24 18:26:13,330 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 40 states have internal predecessors, (47), 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 18:26:13,334 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-24 18:26:13,335 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/3) [2021-06-24 18:26:13,336 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-24 18:26:13,337 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 18:26:13,337 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 18:26:13,337 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 18:26:13,337 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 18:26:13,338 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 18:26:13,338 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 18:26:13,338 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 18:26:13,338 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork2======== [2021-06-24 18:26:13,595 INFO L276 IsEmpty]: Start isEmpty. Operand has 281 states, 273 states have (on average 2.9853479853479854) internal successors, (815), 280 states have internal predecessors, (815), 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 18:26:13,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-06-24 18:26:13,596 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:26:13,597 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:26:13,597 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:26:13,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:26:13,602 INFO L82 PathProgramCache]: Analyzing trace with hash 218022983, now seen corresponding path program 1 times [2021-06-24 18:26:13,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:26:13,613 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790907517] [2021-06-24 18:26:13,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:26:13,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 18:26:13,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:13,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:26:13,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:13,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-24 18:26:13,707 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 18:26:13,707 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 18:26:13,708 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790907517] [2021-06-24 18:26:13,708 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790907517] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 18:26:13,708 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 18:26:13,709 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-24 18:26:13,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709449623] [2021-06-24 18:26:13,711 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 18:26:13,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 18:26:13,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 18:26:13,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 18:26:13,725 INFO L87 Difference]: Start difference. First operand has 281 states, 273 states have (on average 2.9853479853479854) internal successors, (815), 280 states have internal predecessors, (815), 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 18:26:13,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 18:26:13,756 INFO L93 Difference]: Finished difference Result 297 states and 794 transitions. [2021-06-24 18:26:13,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 18:26:13,758 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 18:26:13,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 18:26:13,768 INFO L225 Difference]: With dead ends: 297 [2021-06-24 18:26:13,768 INFO L226 Difference]: Without dead ends: 217 [2021-06-24 18:26:13,769 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 18:26:13,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-06-24 18:26:13,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 213. [2021-06-24 18:26:13,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 211 states have (on average 2.677725118483412) internal successors, (565), 212 states have internal predecessors, (565), 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 18:26:13,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 565 transitions. [2021-06-24 18:26:13,818 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 565 transitions. Word has length 9 [2021-06-24 18:26:13,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 18:26:13,819 INFO L482 AbstractCegarLoop]: Abstraction has 213 states and 565 transitions. [2021-06-24 18:26:13,819 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 18:26:13,819 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 565 transitions. [2021-06-24 18:26:13,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-06-24 18:26:13,821 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:26:13,821 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:26:13,821 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-24 18:26:13,821 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:26:13,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:26:13,822 INFO L82 PathProgramCache]: Analyzing trace with hash 746144645, now seen corresponding path program 1 times [2021-06-24 18:26:13,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:26:13,822 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592136602] [2021-06-24 18:26:13,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:26:13,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 18:26:13,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:13,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-24 18:26:13,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:13,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-24 18:26:13,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:13,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-24 18:26:13,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:13,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-24 18:26:13,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:13,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:26:13,889 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 18:26:13,889 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 18:26:13,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592136602] [2021-06-24 18:26:13,890 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592136602] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 18:26:13,891 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 18:26:13,891 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-24 18:26:13,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112327631] [2021-06-24 18:26:13,892 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-24 18:26:13,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 18:26:13,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-24 18:26:13,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-24 18:26:13,895 INFO L87 Difference]: Start difference. First operand 213 states and 565 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 18:26:13,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 18:26:13,944 INFO L93 Difference]: Finished difference Result 315 states and 860 transitions. [2021-06-24 18:26:13,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 18:26:13,944 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 18:26:13,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 18:26:13,948 INFO L225 Difference]: With dead ends: 315 [2021-06-24 18:26:13,948 INFO L226 Difference]: Without dead ends: 315 [2021-06-24 18:26:13,948 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 25.7ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-24 18:26:13,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-06-24 18:26:13,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 300. [2021-06-24 18:26:13,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 298 states have (on average 2.802013422818792) internal successors, (835), 299 states have internal predecessors, (835), 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 18:26:13,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 835 transitions. [2021-06-24 18:26:13,972 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 835 transitions. Word has length 13 [2021-06-24 18:26:13,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 18:26:13,973 INFO L482 AbstractCegarLoop]: Abstraction has 300 states and 835 transitions. [2021-06-24 18:26:13,973 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 18:26:13,973 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 835 transitions. [2021-06-24 18:26:13,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-06-24 18:26:13,975 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:26:13,975 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:26:13,975 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-24 18:26:13,975 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:26:13,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:26:13,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1004432615, now seen corresponding path program 2 times [2021-06-24 18:26:13,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:26:13,976 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530379123] [2021-06-24 18:26:13,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:26:13,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 18:26:13,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:13,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:26:13,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:13,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:26:13,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:13,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:26:13,993 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 18:26:13,994 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 18:26:13,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530379123] [2021-06-24 18:26:13,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530379123] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 18:26:13,994 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 18:26:13,994 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 18:26:13,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687946005] [2021-06-24 18:26:13,995 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 18:26:13,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 18:26:13,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 18:26:13,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 18:26:13,996 INFO L87 Difference]: Start difference. First operand 300 states and 835 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 18:26:14,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 18:26:14,004 INFO L93 Difference]: Finished difference Result 278 states and 682 transitions. [2021-06-24 18:26:14,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 18:26:14,005 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 18:26:14,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 18:26:14,006 INFO L225 Difference]: With dead ends: 278 [2021-06-24 18:26:14,006 INFO L226 Difference]: Without dead ends: 136 [2021-06-24 18:26:14,007 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 18:26:14,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-06-24 18:26:14,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 126. [2021-06-24 18:26:14,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 124 states have (on average 2.193548387096774) internal successors, (272), 125 states have internal predecessors, (272), 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 18:26:14,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 272 transitions. [2021-06-24 18:26:14,015 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 272 transitions. Word has length 13 [2021-06-24 18:26:14,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 18:26:14,015 INFO L482 AbstractCegarLoop]: Abstraction has 126 states and 272 transitions. [2021-06-24 18:26:14,015 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 18:26:14,015 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 272 transitions. [2021-06-24 18:26:14,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-24 18:26:14,016 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:26:14,017 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:26:14,017 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-24 18:26:14,017 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:26:14,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:26:14,018 INFO L82 PathProgramCache]: Analyzing trace with hash 807230196, now seen corresponding path program 1 times [2021-06-24 18:26:14,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:26:14,018 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079923116] [2021-06-24 18:26:14,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:26:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 18:26:14,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:14,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-24 18:26:14,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:14,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-24 18:26:14,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:14,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-24 18:26:14,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:14,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-24 18:26:14,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:14,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-24 18:26:14,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:14,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-24 18:26:14,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:14,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:26:14,086 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 18:26:14,086 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 18:26:14,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079923116] [2021-06-24 18:26:14,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079923116] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 18:26:14,086 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 18:26:14,086 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-24 18:26:14,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044374926] [2021-06-24 18:26:14,087 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-24 18:26:14,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 18:26:14,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-24 18:26:14,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-06-24 18:26:14,090 INFO L87 Difference]: Start difference. First operand 126 states and 272 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 18:26:14,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 18:26:14,139 INFO L93 Difference]: Finished difference Result 80 states and 172 transitions. [2021-06-24 18:26:14,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 18:26:14,140 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 18:26:14,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 18:26:14,141 INFO L225 Difference]: With dead ends: 80 [2021-06-24 18:26:14,141 INFO L226 Difference]: Without dead ends: 0 [2021-06-24 18:26:14,141 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 31.8ms TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-06-24 18:26:14,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-24 18:26:14,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-24 18:26:14,144 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 18:26:14,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-24 18:26:14,144 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-06-24 18:26:14,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 18:26:14,144 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-24 18:26:14,145 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 18:26:14,145 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-24 18:26:14,145 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-24 18:26:14,145 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-24 18:26:14,145 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadThread1of1ForFork2 was SAFE (2/3) [2021-06-24 18:26:14,146 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-24 18:26:14,151 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 18:26:14,151 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 18:26:14,151 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 18:26:14,151 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 18:26:14,151 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 18:26:14,151 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 18:26:14,151 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 18:26:14,151 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork1======== [2021-06-24 18:26:14,250 INFO L276 IsEmpty]: Start isEmpty. Operand has 275 states, 251 states have (on average 2.6294820717131473) internal successors, (660), 274 states have internal predecessors, (660), 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 18:26:14,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-06-24 18:26:14,251 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:26:14,251 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:26:14,251 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:26:14,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:26:14,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1808147887, now seen corresponding path program 1 times [2021-06-24 18:26:14,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:26:14,252 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226643112] [2021-06-24 18:26:14,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:26:14,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 18:26:14,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:14,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:26:14,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:14,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-24 18:26:14,279 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 18:26:14,280 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 18:26:14,280 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226643112] [2021-06-24 18:26:14,280 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226643112] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 18:26:14,280 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 18:26:14,280 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-24 18:26:14,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304521460] [2021-06-24 18:26:14,281 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 18:26:14,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 18:26:14,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 18:26:14,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 18:26:14,282 INFO L87 Difference]: Start difference. First operand has 275 states, 251 states have (on average 2.6294820717131473) internal successors, (660), 274 states have internal predecessors, (660), 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 18:26:14,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 18:26:14,321 INFO L93 Difference]: Finished difference Result 277 states and 633 transitions. [2021-06-24 18:26:14,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 18:26:14,322 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 18:26:14,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 18:26:14,323 INFO L225 Difference]: With dead ends: 277 [2021-06-24 18:26:14,323 INFO L226 Difference]: Without dead ends: 195 [2021-06-24 18:26:14,323 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 18:26:14,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-06-24 18:26:14,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 191. [2021-06-24 18:26:14,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 187 states have (on average 2.3850267379679146) internal successors, (446), 190 states have internal predecessors, (446), 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 18:26:14,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 446 transitions. [2021-06-24 18:26:14,347 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 446 transitions. Word has length 8 [2021-06-24 18:26:14,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 18:26:14,348 INFO L482 AbstractCegarLoop]: Abstraction has 191 states and 446 transitions. [2021-06-24 18:26:14,348 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 18:26:14,348 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 446 transitions. [2021-06-24 18:26:14,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-06-24 18:26:14,349 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:26:14,349 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:26:14,349 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-24 18:26:14,349 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:26:14,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:26:14,350 INFO L82 PathProgramCache]: Analyzing trace with hash 739982189, now seen corresponding path program 1 times [2021-06-24 18:26:14,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:26:14,350 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037204292] [2021-06-24 18:26:14,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:26:14,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 18:26:14,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:14,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-24 18:26:14,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:14,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-24 18:26:14,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:14,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-24 18:26:14,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:14,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-24 18:26:14,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:14,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:26:14,409 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 18:26:14,409 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 18:26:14,410 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037204292] [2021-06-24 18:26:14,410 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037204292] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 18:26:14,410 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 18:26:14,410 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-24 18:26:14,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149997017] [2021-06-24 18:26:14,411 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-24 18:26:14,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 18:26:14,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-24 18:26:14,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-24 18:26:14,412 INFO L87 Difference]: Start difference. First operand 191 states and 446 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 18:26:14,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 18:26:14,457 INFO L93 Difference]: Finished difference Result 285 states and 677 transitions. [2021-06-24 18:26:14,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 18:26:14,457 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 18:26:14,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 18:26:14,460 INFO L225 Difference]: With dead ends: 285 [2021-06-24 18:26:14,460 INFO L226 Difference]: Without dead ends: 285 [2021-06-24 18:26:14,460 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 23.7ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-24 18:26:14,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-06-24 18:26:14,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 271. [2021-06-24 18:26:14,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 267 states have (on average 2.4681647940074907) internal successors, (659), 270 states have internal predecessors, (659), 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 18:26:14,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 659 transitions. [2021-06-24 18:26:14,492 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 659 transitions. Word has length 12 [2021-06-24 18:26:14,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 18:26:14,492 INFO L482 AbstractCegarLoop]: Abstraction has 271 states and 659 transitions. [2021-06-24 18:26:14,492 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 18:26:14,492 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 659 transitions. [2021-06-24 18:26:14,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-06-24 18:26:14,496 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:26:14,496 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:26:14,497 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-24 18:26:14,497 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:26:14,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:26:14,497 INFO L82 PathProgramCache]: Analyzing trace with hash 855273359, now seen corresponding path program 2 times [2021-06-24 18:26:14,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:26:14,498 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637490824] [2021-06-24 18:26:14,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:26:14,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 18:26:14,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:14,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:26:14,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:14,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:26:14,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:14,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:26:14,529 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 18:26:14,529 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 18:26:14,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637490824] [2021-06-24 18:26:14,529 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637490824] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 18:26:14,529 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 18:26:14,530 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 18:26:14,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104882397] [2021-06-24 18:26:14,530 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 18:26:14,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 18:26:14,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 18:26:14,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 18:26:14,531 INFO L87 Difference]: Start difference. First operand 271 states and 659 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 18:26:14,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 18:26:14,541 INFO L93 Difference]: Finished difference Result 249 states and 521 transitions. [2021-06-24 18:26:14,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 18:26:14,542 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 18:26:14,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 18:26:14,543 INFO L225 Difference]: With dead ends: 249 [2021-06-24 18:26:14,543 INFO L226 Difference]: Without dead ends: 131 [2021-06-24 18:26:14,543 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 18:26:14,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-06-24 18:26:14,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 121. [2021-06-24 18:26:14,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 117 states have (on average 1.8547008547008548) internal successors, (217), 120 states have internal predecessors, (217), 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 18:26:14,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 217 transitions. [2021-06-24 18:26:14,548 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 217 transitions. Word has length 12 [2021-06-24 18:26:14,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 18:26:14,549 INFO L482 AbstractCegarLoop]: Abstraction has 121 states and 217 transitions. [2021-06-24 18:26:14,549 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 18:26:14,549 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 217 transitions. [2021-06-24 18:26:14,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-24 18:26:14,550 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:26:14,550 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:26:14,550 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-24 18:26:14,550 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:26:14,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:26:14,551 INFO L82 PathProgramCache]: Analyzing trace with hash 521533337, now seen corresponding path program 1 times [2021-06-24 18:26:14,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:26:14,551 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507265637] [2021-06-24 18:26:14,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:26:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 18:26:14,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:14,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-24 18:26:14,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:14,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-24 18:26:14,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:14,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-24 18:26:14,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:14,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-24 18:26:14,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:14,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-06-24 18:26:14,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:14,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-24 18:26:14,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-24 18:26:14,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-24 18:26:14,609 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 18:26:14,609 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 18:26:14,609 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507265637] [2021-06-24 18:26:14,609 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507265637] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 18:26:14,609 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 18:26:14,609 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-24 18:26:14,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968360472] [2021-06-24 18:26:14,610 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-24 18:26:14,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 18:26:14,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-24 18:26:14,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-06-24 18:26:14,611 INFO L87 Difference]: Start difference. First operand 121 states and 217 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 18:26:14,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 18:26:14,642 INFO L93 Difference]: Finished difference Result 77 states and 139 transitions. [2021-06-24 18:26:14,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 18:26:14,643 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 18:26:14,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 18:26:14,643 INFO L225 Difference]: With dead ends: 77 [2021-06-24 18:26:14,643 INFO L226 Difference]: Without dead ends: 0 [2021-06-24 18:26:14,644 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 25.2ms TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-06-24 18:26:14,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-24 18:26:14,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-24 18:26:14,644 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 18:26:14,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-24 18:26:14,645 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-06-24 18:26:14,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 18:26:14,645 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-24 18:26:14,645 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 18:26:14,645 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-24 18:26:14,645 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-24 18:26:14,645 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-24 18:26:14,646 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadThread1of1ForFork1 was SAFE (3/3) [2021-06-24 18:26:14,646 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-24 18:26:14,649 INFO L202 PluginConnector]: Adding new model bluetooth02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 06:26:14 BasicIcfg [2021-06-24 18:26:14,649 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-24 18:26:14,652 INFO L168 Benchmark]: Toolchain (without parser) took 1914.00 ms. Allocated memory was 222.3 MB in the beginning and 267.4 MB in the end (delta: 45.1 MB). Free memory was 203.3 MB in the beginning and 208.2 MB in the end (delta: -4.8 MB). Peak memory consumption was 39.7 MB. Max. memory is 8.0 GB. [2021-06-24 18:26:14,654 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.46 ms. Allocated memory is still 222.3 MB. Free memory is still 204.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-24 18:26:14,655 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.78 ms. Allocated memory is still 222.3 MB. Free memory was 203.2 MB in the beginning and 201.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-24 18:26:14,655 INFO L168 Benchmark]: Boogie Preprocessor took 14.49 ms. Allocated memory is still 222.3 MB. Free memory was 201.5 MB in the beginning and 200.6 MB in the end (delta: 838.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-24 18:26:14,658 INFO L168 Benchmark]: RCFGBuilder took 285.03 ms. Allocated memory is still 222.3 MB. Free memory was 200.5 MB in the beginning and 187.8 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-06-24 18:26:14,659 INFO L168 Benchmark]: TraceAbstraction took 1576.09 ms. Allocated memory was 222.3 MB in the beginning and 267.4 MB in the end (delta: 45.1 MB). Free memory was 187.4 MB in the beginning and 208.2 MB in the end (delta: -20.8 MB). Peak memory consumption was 24.0 MB. Max. memory is 8.0 GB. [2021-06-24 18:26:14,661 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 0.46 ms. Allocated memory is still 222.3 MB. Free memory is still 204.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 33.78 ms. Allocated memory is still 222.3 MB. Free memory was 203.2 MB in the beginning and 201.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 14.49 ms. Allocated memory is still 222.3 MB. Free memory was 201.5 MB in the beginning and 200.6 MB in the end (delta: 838.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 285.03 ms. Allocated memory is still 222.3 MB. Free memory was 200.5 MB in the beginning and 187.8 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1576.09 ms. Allocated memory was 222.3 MB in the beginning and 267.4 MB in the end (delta: 45.1 MB). Free memory was 187.4 MB in the beginning and 208.2 MB in the end (delta: -20.8 MB). Peak memory consumption was 24.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 35, positive: 28, positive conditional: 28, positive unconditional: 0, negative: 7, negative conditional: 7, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.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] , 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: 61, positive: 57, positive conditional: 0, positive unconditional: 57, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 30, positive: 0, positive conditional: 0, positive unconditional: 0, 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: 5 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 1221, positive: 990, positive conditional: 990, positive unconditional: 0, negative: 231, negative conditional: 231, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1065, positive: 990, positive conditional: 0, positive unconditional: 990, negative: 75, negative conditional: 0, negative unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 132, positive: 117, positive conditional: 0, positive unconditional: 117, 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: 132, positive: 105, positive conditional: 0, positive unconditional: 105, 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: 127, positive: 57, positive conditional: 0, positive unconditional: 57, negative: 70, negative conditional: 0, negative unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1065, positive: 873, positive conditional: 0, positive unconditional: 873, negative: 60, negative conditional: 0, negative unconditional: 60, unknown: 132, unknown conditional: 0, unknown unconditional: 132] , Statistics on independence cache: Total cache size (in pairs): 132, Positive cache size: 117, Positive conditional cache size: 0, Positive unconditional cache size: 117, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Independence queries for same thread: 156 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 1122, positive: 910, positive conditional: 910, positive unconditional: 0, negative: 212, negative conditional: 212, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 984, positive: 910, positive conditional: 0, positive unconditional: 910, negative: 74, negative conditional: 0, negative unconditional: 74, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 124, positive: 111, positive conditional: 0, positive unconditional: 111, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 124, positive: 100, positive conditional: 0, positive unconditional: 100, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 24, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 54, positive: 34, positive conditional: 0, positive unconditional: 34, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 984, positive: 799, positive conditional: 0, positive unconditional: 799, negative: 61, negative conditional: 0, negative unconditional: 61, unknown: 124, unknown conditional: 0, unknown unconditional: 124] , Statistics on independence cache: Total cache size (in pairs): 124, Positive cache size: 111, Positive conditional cache size: 0, Positive unconditional cache size: 111, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Independence queries for same thread: 138 - 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: 159.8ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 6.3ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 149.9ms, PartialOrderReductionTime: 137.8ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred 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: 808.0ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 7.1ms, AutomataDifference: 179.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 255.3ms, PartialOrderReductionTime: 254.2ms, HoareTripleCheckerStatistics: 89 SDtfs, 83 SDslu, 74 SDs, 0 SdLazy, 49 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 67.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 67.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=300occurred in iteration=2, 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: 72.9ms AutomataMinimizationTime, 4 MinimizatonAttempts, 29 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 5.4ms SsaConstructionTime, 26.6ms SatisfiabilityAnalysisTime, 165.5ms 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: 494.9ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 7.8ms, AutomataDifference: 138.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 97.4ms, PartialOrderReductionTime: 96.4ms, HoareTripleCheckerStatistics: 88 SDtfs, 83 SDslu, 74 SDs, 0 SdLazy, 49 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 81.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 53.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=275occurred 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: 60.2ms AutomataMinimizationTime, 4 MinimizatonAttempts, 28 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2.5ms SsaConstructionTime, 10.6ms SatisfiabilityAnalysisTime, 150.1ms 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...