/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/bluetooth-serverassert02.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-1c3aa5735269c4be989a50fc1da9ea7b9492ef29-1c3aa57 [2021-07-01 10:04:31,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-01 10:04:31,188 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-01 10:04:31,222 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-01 10:04:31,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-01 10:04:31,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-01 10:04:31,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-01 10:04:31,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-01 10:04:31,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-01 10:04:31,247 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-01 10:04:31,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-01 10:04:31,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-01 10:04:31,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-01 10:04:31,254 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-01 10:04:31,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-01 10:04:31,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-01 10:04:31,257 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-01 10:04:31,265 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 [2021-07-01 10:04:31,294 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-01 10:04:31,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-01 10:04:31,296 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-01 10:04:31,296 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-01 10:04:31,296 INFO L138 SettingsManager]: * Use SBE=true [2021-07-01 10:04:31,297 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-01 10:04:31,297 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-01 10:04:31,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-01 10:04:31,297 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-01 10:04:31,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-01 10:04:31,298 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-01 10:04:31,298 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-01 10:04:31,298 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-01 10:04:31,298 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-01 10:04:31,298 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-01 10:04:31,298 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-01 10:04:31,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-01 10:04:31,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-01 10:04:31,299 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-01 10:04:31,299 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-01 10:04:31,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-01 10:04:31,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-01 10:04:31,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-01 10:04:31,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-01 10:04:31,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-01 10:04:31,300 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-01 10:04:31,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-01 10:04:31,300 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-01 10:04:31,300 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-01 10:04:31,300 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-07-01 10:04:31,300 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-01 10:04:31,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-01 10:04:31,590 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-01 10:04:31,592 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-01 10:04:31,592 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-01 10:04:31,600 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-01 10:04:31,601 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-serverassert02.bpl [2021-07-01 10:04:31,601 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-serverassert02.bpl' [2021-07-01 10:04:31,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-01 10:04:31,635 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-01 10:04:31,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-01 10:04:31,653 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-01 10:04:31,653 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-01 10:04:31,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-serverassert02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:04:31" (1/1) ... [2021-07-01 10:04:31,670 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-serverassert02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:04:31" (1/1) ... [2021-07-01 10:04:31,687 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-01 10:04:31,688 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-01 10:04:31,688 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-01 10:04:31,688 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-01 10:04:31,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-serverassert02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:04:31" (1/1) ... [2021-07-01 10:04:31,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-serverassert02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:04:31" (1/1) ... [2021-07-01 10:04:31,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-serverassert02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:04:31" (1/1) ... [2021-07-01 10:04:31,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-serverassert02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:04:31" (1/1) ... [2021-07-01 10:04:31,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-serverassert02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:04:31" (1/1) ... [2021-07-01 10:04:31,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-serverassert02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:04:31" (1/1) ... [2021-07-01 10:04:31,700 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-serverassert02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:04:31" (1/1) ... [2021-07-01 10:04:31,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-01 10:04:31,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-01 10:04:31,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-01 10:04:31,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-01 10:04:31,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-serverassert02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:04:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-01 10:04:31,761 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-07-01 10:04:31,762 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-07-01 10:04:31,763 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-07-01 10:04:31,764 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-07-01 10:04:31,764 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-07-01 10:04:31,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-07-01 10:04:31,764 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-01 10:04:31,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-01 10:04:31,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-01 10:04:31,766 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-01 10:04:31,895 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-01 10:04:31,895 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-07-01 10:04:31,895 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-07-01 10:04:31,897 INFO L202 PluginConnector]: Adding new model bluetooth-serverassert02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:04:31 BoogieIcfgContainer [2021-07-01 10:04:31,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-01 10:04:31,898 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-01 10:04:31,898 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-01 10:04:31,900 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-01 10:04:31,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-serverassert02.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:04:31" (1/2) ... [2021-07-01 10:04:31,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51260a16 and model type bluetooth-serverassert02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:04:31, skipping insertion in model container [2021-07-01 10:04:31,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-serverassert02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:04:31" (2/2) ... [2021-07-01 10:04:31,902 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth-serverassert02.bpl [2021-07-01 10:04:31,906 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-01 10:04:31,906 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-01 10:04:31,906 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-01 10:04:31,906 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-01 10:04:31,931 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-01 10:04:31,945 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-01 10:04:31,958 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-01 10:04:31,958 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-01 10:04:31,958 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-01 10:04:31,958 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-01 10:04:31,958 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-01 10:04:31,958 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-01 10:04:31,958 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-01 10:04:31,958 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ServerThreadThread1of1ForFork0======== [2021-07-01 10:04:32,093 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 125 states have (on average 2.896) internal successors, (362), 136 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:32,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-07-01 10:04:32,098 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 10:04:32,098 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 10:04:32,099 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 10:04:32,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 10:04:32,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1717174572, now seen corresponding path program 1 times [2021-07-01 10:04:32,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 10:04:32,108 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564071141] [2021-07-01 10:04:32,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 10:04:32,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 10:04:32,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-01 10:04:32,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:32,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:32,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:32,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 10:04:32,207 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 10:04:32,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564071141] [2021-07-01 10:04:32,208 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564071141] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 10:04:32,208 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 10:04:32,208 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-01 10:04:32,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969818324] [2021-07-01 10:04:32,210 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-01 10:04:32,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 10:04:32,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-01 10:04:32,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-01 10:04:32,220 INFO L87 Difference]: Start difference. First operand has 137 states, 125 states have (on average 2.896) internal successors, (362), 136 states have internal predecessors, (362), 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 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:32,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-01 10:04:32,278 INFO L93 Difference]: Finished difference Result 277 states and 737 transitions. [2021-07-01 10:04:32,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 10:04:32,279 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-07-01 10:04:32,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-01 10:04:32,288 INFO L225 Difference]: With dead ends: 277 [2021-07-01 10:04:32,288 INFO L226 Difference]: Without dead ends: 253 [2021-07-01 10:04:32,289 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 16.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-01 10:04:32,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-07-01 10:04:32,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 221. [2021-07-01 10:04:32,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 219 states have (on average 2.7534246575342465) internal successors, (603), 220 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:32,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 603 transitions. [2021-07-01 10:04:32,329 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 603 transitions. Word has length 10 [2021-07-01 10:04:32,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-01 10:04:32,330 INFO L482 AbstractCegarLoop]: Abstraction has 221 states and 603 transitions. [2021-07-01 10:04:32,330 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:32,330 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 603 transitions. [2021-07-01 10:04:32,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-07-01 10:04:32,331 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 10:04:32,331 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 10:04:32,332 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-01 10:04:32,332 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 10:04:32,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 10:04:32,332 INFO L82 PathProgramCache]: Analyzing trace with hash -930082400, now seen corresponding path program 1 times [2021-07-01 10:04:32,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 10:04:32,333 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235784742] [2021-07-01 10:04:32,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 10:04:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 10:04:32,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-01 10:04:32,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-01 10:04:32,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-01 10:04:32,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 10:04:32,347 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 10:04:32,347 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235784742] [2021-07-01 10:04:32,347 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235784742] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 10:04:32,347 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 10:04:32,347 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-01 10:04:32,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348128780] [2021-07-01 10:04:32,348 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-01 10:04:32,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 10:04:32,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-01 10:04:32,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-01 10:04:32,350 INFO L87 Difference]: Start difference. First operand 221 states and 603 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) [2021-07-01 10:04:32,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-01 10:04:32,358 INFO L93 Difference]: Finished difference Result 221 states and 486 transitions. [2021-07-01 10:04:32,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 10:04:32,358 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 [2021-07-01 10:04:32,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-01 10:04:32,359 INFO L225 Difference]: With dead ends: 221 [2021-07-01 10:04:32,360 INFO L226 Difference]: Without dead ends: 177 [2021-07-01 10:04:32,360 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-01 10:04:32,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-07-01 10:04:32,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-07-01 10:04:32,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 175 states have (on average 2.2914285714285714) internal successors, (401), 176 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:32,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 401 transitions. [2021-07-01 10:04:32,371 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 401 transitions. Word has length 12 [2021-07-01 10:04:32,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-01 10:04:32,371 INFO L482 AbstractCegarLoop]: Abstraction has 177 states and 401 transitions. [2021-07-01 10:04:32,371 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) [2021-07-01 10:04:32,371 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 401 transitions. [2021-07-01 10:04:32,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-07-01 10:04:32,372 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 10:04:32,372 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 10:04:32,372 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-01 10:04:32,373 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 10:04:32,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 10:04:32,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1465671443, now seen corresponding path program 1 times [2021-07-01 10:04:32,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 10:04:32,373 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613423461] [2021-07-01 10:04:32,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 10:04:32,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 10:04:32,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:32,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:32,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:32,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:32,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:32,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:32,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 10:04:32,429 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 10:04:32,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613423461] [2021-07-01 10:04:32,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613423461] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 10:04:32,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 10:04:32,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-01 10:04:32,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322393083] [2021-07-01 10:04:32,429 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-01 10:04:32,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 10:04:32,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-01 10:04:32,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-07-01 10:04:32,430 INFO L87 Difference]: Start difference. First operand 177 states and 401 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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) [2021-07-01 10:04:32,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-01 10:04:32,476 INFO L93 Difference]: Finished difference Result 250 states and 546 transitions. [2021-07-01 10:04:32,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 10:04:32,476 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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 [2021-07-01 10:04:32,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-01 10:04:32,478 INFO L225 Difference]: With dead ends: 250 [2021-07-01 10:04:32,478 INFO L226 Difference]: Without dead ends: 172 [2021-07-01 10:04:32,478 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 24.2ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-07-01 10:04:32,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-07-01 10:04:32,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 152. [2021-07-01 10:04:32,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 150 states have (on average 2.2733333333333334) internal successors, (341), 151 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:32,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 341 transitions. [2021-07-01 10:04:32,486 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 341 transitions. Word has length 13 [2021-07-01 10:04:32,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-01 10:04:32,486 INFO L482 AbstractCegarLoop]: Abstraction has 152 states and 341 transitions. [2021-07-01 10:04:32,486 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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) [2021-07-01 10:04:32,486 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 341 transitions. [2021-07-01 10:04:32,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-01 10:04:32,487 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 10:04:32,487 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 10:04:32,488 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-01 10:04:32,488 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 10:04:32,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 10:04:32,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1450498446, now seen corresponding path program 1 times [2021-07-01 10:04:32,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 10:04:32,489 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125849750] [2021-07-01 10:04:32,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 10:04:32,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 10:04:32,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-01 10:04:32,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-01 10:04:32,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-01 10:04:32,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-01 10:04:32,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-01 10:04:32,537 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-07-01 10:04:32,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:32,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 10:04:32,545 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 10:04:32,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125849750] [2021-07-01 10:04:32,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125849750] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 10:04:32,545 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 10:04:32,545 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-01 10:04:32,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252801157] [2021-07-01 10:04:32,546 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-01 10:04:32,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 10:04:32,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-01 10:04:32,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-01 10:04:32,547 INFO L87 Difference]: Start difference. First operand 152 states and 341 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:32,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-01 10:04:32,589 INFO L93 Difference]: Finished difference Result 152 states and 335 transitions. [2021-07-01 10:04:32,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 10:04:32,589 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-07-01 10:04:32,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-01 10:04:32,590 INFO L225 Difference]: With dead ends: 152 [2021-07-01 10:04:32,590 INFO L226 Difference]: Without dead ends: 98 [2021-07-01 10:04:32,590 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.8ms TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-01 10:04:32,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-07-01 10:04:32,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-07-01 10:04:32,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 96 states have (on average 2.0104166666666665) internal successors, (193), 97 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:32,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 193 transitions. [2021-07-01 10:04:32,594 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 193 transitions. Word has length 16 [2021-07-01 10:04:32,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-01 10:04:32,597 INFO L482 AbstractCegarLoop]: Abstraction has 98 states and 193 transitions. [2021-07-01 10:04:32,597 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:32,597 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 193 transitions. [2021-07-01 10:04:32,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-07-01 10:04:32,600 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 10:04:32,601 INFO L504 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 10:04:32,601 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-01 10:04:32,601 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 10:04:32,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 10:04:32,601 INFO L82 PathProgramCache]: Analyzing trace with hash 957393091, now seen corresponding path program 2 times [2021-07-01 10:04:32,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 10:04:32,602 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83854259] [2021-07-01 10:04:32,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 10:04:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 10:04:32,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:32,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:32,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:32,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:32,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:32,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:32,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:32,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:32,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 10:04:32,716 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 10:04:32,716 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83854259] [2021-07-01 10:04:32,716 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83854259] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 10:04:32,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904858401] [2021-07-01 10:04:32,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 10:04:32,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-01 10:04:32,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-01 10:04:32,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-01 10:04:32,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 10:04:32,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:32,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:32,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:32,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:32,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:32,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:32,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:32,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:32,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:32,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:32,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:32,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:32,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:32,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:32,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:32,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:32,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:32,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:32,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:32,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:32,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:32,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:32,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:32,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:32,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:32,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:32,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:32,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:32,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:32,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:32,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-01 10:04:32,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:32,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:32,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-01 10:04:32,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:32,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:32,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:32,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:32,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-01 10:04:32,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:32,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:32,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-01 10:04:32,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:32,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:32,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:32,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:32,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-07-01 10:04:32,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:32,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:32,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-07-01 10:04:32,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,864 INFO L147 QuantifierPusher]: treesize reduction 11, result has 35.3 percent of original size 6 [2021-07-01 10:04:32,865 INFO L142 QuantifierPusher]: treesize reduction 11, result has 35.3 percent of original size [2021-07-01 10:04:32,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-01 10:04:32,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:32,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:32,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-07-01 10:04:32,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:32,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:32,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-01 10:04:32,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-07-01 10:04:32,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-07-01 10:04:32,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,888 INFO L732 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2021-07-01 10:04:32,895 INFO L739 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-01 10:04:32,898 INFO L142 QuantifierPusher]: treesize reduction 14, result has 33.3 percent of original size [2021-07-01 10:04:32,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:32,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:32,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:32,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:32,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:32,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:32,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:32,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:32,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:32,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:32,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-01 10:04:32,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-01 10:04:32,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-01 10:04:32,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-01 10:04:32,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-01 10:04:32,929 INFO L142 QuantifierPusher]: treesize reduction 10, result has 33.3 percent of original size [2021-07-01 10:04:32,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-01 10:04:32,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:32,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:32,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:32,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:32,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:32,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:32,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-01 10:04:32,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-01 10:04:32,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 10:04:32,935 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904858401] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 10:04:32,935 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 10:04:32,935 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-07-01 10:04:32,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83892444] [2021-07-01 10:04:32,936 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-01 10:04:32,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 10:04:32,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-01 10:04:32,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-07-01 10:04:32,937 INFO L87 Difference]: Start difference. First operand 98 states and 193 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:32,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-01 10:04:32,967 INFO L93 Difference]: Finished difference Result 60 states and 118 transitions. [2021-07-01 10:04:32,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 10:04:32,968 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 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 17 [2021-07-01 10:04:32,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-01 10:04:32,968 INFO L225 Difference]: With dead ends: 60 [2021-07-01 10:04:32,968 INFO L226 Difference]: Without dead ends: 0 [2021-07-01 10:04:32,968 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 41.2ms TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-07-01 10:04:32,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-01 10:04:32,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-01 10:04:32,968 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) [2021-07-01 10:04:32,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-01 10:04:32,969 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-07-01 10:04:32,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-01 10:04:32,969 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-01 10:04:32,969 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:32,969 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-01 10:04:32,969 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-01 10:04:33,189 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 10:04:33,189 INFO L301 ceAbstractionStarter]: Result for error location ServerThreadThread1of1ForFork0 was SAFE (1/2) [2021-07-01 10:04:33,191 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-07-01 10:04:33,195 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-01 10:04:33,196 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-01 10:04:33,196 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-01 10:04:33,196 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-01 10:04:33,196 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-01 10:04:33,196 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-01 10:04:33,196 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-01 10:04:33,196 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-01 10:04:33,220 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 36 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 10:04:33,221 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-01 10:04:33,221 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (2/2) [2021-07-01 10:04:33,221 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-01 10:04:33,223 INFO L202 PluginConnector]: Adding new model bluetooth-serverassert02.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 10:04:33 BasicIcfg [2021-07-01 10:04:33,223 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-01 10:04:33,223 INFO L168 Benchmark]: Toolchain (without parser) took 1588.15 ms. Allocated memory was 198.2 MB in the beginning and 283.1 MB in the end (delta: 84.9 MB). Free memory was 179.1 MB in the beginning and 215.5 MB in the end (delta: -36.4 MB). Peak memory consumption was 48.6 MB. Max. memory is 8.0 GB. [2021-07-01 10:04:33,223 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 198.2 MB. Free memory is still 180.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-01 10:04:33,224 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.41 ms. Allocated memory is still 198.2 MB. Free memory was 179.1 MB in the beginning and 177.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-01 10:04:33,224 INFO L168 Benchmark]: Boogie Preprocessor took 12.52 ms. Allocated memory is still 198.2 MB. Free memory was 177.2 MB in the beginning and 176.4 MB in the end (delta: 846.7 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-01 10:04:33,224 INFO L168 Benchmark]: RCFGBuilder took 195.54 ms. Allocated memory is still 198.2 MB. Free memory was 176.4 MB in the beginning and 163.6 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-07-01 10:04:33,224 INFO L168 Benchmark]: TraceAbstraction took 1324.91 ms. Allocated memory was 198.2 MB in the beginning and 283.1 MB in the end (delta: 84.9 MB). Free memory was 163.2 MB in the beginning and 215.5 MB in the end (delta: -52.3 MB). Peak memory consumption was 32.9 MB. Max. memory is 8.0 GB. [2021-07-01 10:04:33,225 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 0.13 ms. Allocated memory is still 198.2 MB. Free memory is still 180.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 34.41 ms. Allocated memory is still 198.2 MB. Free memory was 179.1 MB in the beginning and 177.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 12.52 ms. Allocated memory is still 198.2 MB. Free memory was 177.2 MB in the beginning and 176.4 MB in the end (delta: 846.7 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 195.54 ms. Allocated memory is still 198.2 MB. Free memory was 176.4 MB in the beginning and 163.6 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1324.91 ms. Allocated memory was 198.2 MB in the beginning and 283.1 MB in the end (delta: 84.9 MB). Free memory was 163.2 MB in the beginning and 215.5 MB in the end (delta: -52.3 MB). Peak memory consumption was 32.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 565, positive: 400, positive conditional: 400, positive unconditional: 0, negative: 165, negative conditional: 165, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 487, positive: 400, positive conditional: 0, positive unconditional: 400, negative: 87, negative conditional: 0, negative unconditional: 87, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 71, positive: 58, positive conditional: 0, positive unconditional: 58, 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: 71, positive: 53, positive conditional: 0, positive unconditional: 53, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 18, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 49, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 487, positive: 342, positive conditional: 0, positive unconditional: 342, negative: 74, negative conditional: 0, negative unconditional: 74, unknown: 71, unknown conditional: 0, unknown unconditional: 71] , Statistics on independence cache: Total cache size (in pairs): 71, Positive cache size: 58, Positive conditional cache size: 0, Positive unconditional cache size: 58, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Independence queries for same thread: 78 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 36, positive: 23, positive conditional: 23, positive unconditional: 0, negative: 13, negative conditional: 13, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 28, positive: 23, positive conditional: 0, positive unconditional: 23, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 28, positive: 23, positive conditional: 0, positive unconditional: 23, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 28, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 8, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 16, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 28, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 28, unknown conditional: 0, unknown unconditional: 28] , Statistics on independence cache: Total cache size (in pairs): 28, Positive cache size: 23, Positive conditional cache size: 0, Positive unconditional cache size: 23, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Independence queries for same thread: 8 - PositiveResult [Line: 71]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ServerThreadThread1of1ForFork0 with 1 thread instances CFG has 6 procedures, 37 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1233.3ms, OverallIterations: 5, TraceHistogramMax: 2, EmptinessCheckTime: 13.4ms, AutomataDifference: 213.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 132.7ms, PartialOrderReductionTime: 125.5ms, HoareTripleCheckerStatistics: 106 SDtfs, 119 SDslu, 199 SDs, 0 SdLazy, 186 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 109.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 105.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=221occurred in iteration=1, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 55.1ms AutomataMinimizationTime, 5 MinimizatonAttempts, 52 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 8.6ms SsaConstructionTime, 35.8ms SatisfiabilityAnalysisTime, 446.2ms InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 79 ConstructedInterpolants, 0 QuantifiedInterpolants, 351 SizeOfPredicates, 2 NumberOfNonLiveVariables, 35 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 6 procedures, 37 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 25.4ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.6ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 24.0ms, PartialOrderReductionTime: 23.3ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...