/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.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-customized05.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-1c3aa5735269c4be989a50fc1da9ea7b9492ef29-1c3aa57 [2021-07-01 09:25:03,185 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-01 09:25:03,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-01 09:25:03,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-01 09:25:03,212 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-01 09:25:03,212 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-01 09:25:03,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-01 09:25:03,214 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-01 09:25:03,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-01 09:25:03,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-01 09:25:03,216 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-01 09:25:03,217 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-01 09:25:03,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-01 09:25:03,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-01 09:25:03,219 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-01 09:25:03,220 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-01 09:25:03,221 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-01 09:25:03,228 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.epf [2021-07-01 09:25:03,251 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-01 09:25:03,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-01 09:25:03,252 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-01 09:25:03,252 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-01 09:25:03,253 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-01 09:25:03,253 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-01 09:25:03,253 INFO L138 SettingsManager]: * Use SBE=true [2021-07-01 09:25:03,253 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-01 09:25:03,253 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-01 09:25:03,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-01 09:25:03,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-01 09:25:03,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-01 09:25:03,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-01 09:25:03,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-01 09:25:03,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-01 09:25:03,254 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-01 09:25:03,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-01 09:25:03,254 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-01 09:25:03,254 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-01 09:25:03,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-01 09:25:03,254 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-01 09:25:03,254 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-01 09:25:03,254 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-01 09:25:03,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-01 09:25:03,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-01 09:25:03,255 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-01 09:25:03,255 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-01 09:25:03,255 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-01 09:25:03,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-01 09:25:03,255 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-01 09:25:03,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-01 09:25:03,255 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-01 09:25:03,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-01 09:25:03,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-01 09:25:03,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-01 09:25:03,613 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-01 09:25:03,616 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-01 09:25:03,616 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-customized05.bpl [2021-07-01 09:25:03,617 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-customized05.bpl' [2021-07-01 09:25:03,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-01 09:25:03,645 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-01 09:25:03,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-01 09:25:03,647 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-01 09:25:03,647 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-01 09:25:03,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-customized05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:03" (1/1) ... [2021-07-01 09:25:03,662 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-customized05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:03" (1/1) ... [2021-07-01 09:25:03,675 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-01 09:25:03,677 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-01 09:25:03,677 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-01 09:25:03,678 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-01 09:25:03,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-customized05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:03" (1/1) ... [2021-07-01 09:25:03,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-customized05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:03" (1/1) ... [2021-07-01 09:25:03,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-customized05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:03" (1/1) ... [2021-07-01 09:25:03,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-customized05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:03" (1/1) ... [2021-07-01 09:25:03,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-customized05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:03" (1/1) ... [2021-07-01 09:25:03,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-customized05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:03" (1/1) ... [2021-07-01 09:25:03,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-customized05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:03" (1/1) ... [2021-07-01 09:25:03,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-01 09:25:03,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-01 09:25:03,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-01 09:25:03,691 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-01 09:25:03,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-customized05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:03" (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 09:25:03,746 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThreadWithAssert given in one single declaration [2021-07-01 09:25:03,746 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThreadWithAssert [2021-07-01 09:25:03,746 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThreadWithAssert [2021-07-01 09:25:03,747 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-07-01 09:25:03,747 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-07-01 09:25:03,747 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-07-01 09:25:03,747 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-07-01 09:25:03,747 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-07-01 09:25:03,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-07-01 09:25:03,747 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-01 09:25:03,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-01 09:25:03,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-01 09:25:03,749 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 09:25:03,930 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-01 09:25:03,930 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-07-01 09:25:03,931 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadWithAssertEXIT is neither atomic block end nor error location. [2021-07-01 09:25:03,931 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-07-01 09:25:03,932 INFO L202 PluginConnector]: Adding new model bluetooth-customized05.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 09:25:03 BoogieIcfgContainer [2021-07-01 09:25:03,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-01 09:25:03,933 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-01 09:25:03,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-01 09:25:03,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-01 09:25:03,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-customized05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:03" (1/2) ... [2021-07-01 09:25:03,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a8a6742 and model type bluetooth-customized05.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 09:25:03, skipping insertion in model container [2021-07-01 09:25:03,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-customized05.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 09:25:03" (2/2) ... [2021-07-01 09:25:03,937 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth-customized05.bpl [2021-07-01 09:25:03,941 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-01 09:25:03,941 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-01 09:25:03,942 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-01 09:25:03,942 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-01 09:25:03,968 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-01 09:25:03,984 INFO L255 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-07-01 09:25:03,998 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-01 09:25:03,998 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-01 09:25:03,998 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-01 09:25:03,998 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-01 09:25:03,998 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-01 09:25:03,998 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-01 09:25:03,999 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-01 09:25:03,999 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-01 09:25:04,006 INFO L112 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 53 places, 39 transitions, 108 flow [2021-07-01 09:25:04,818 INFO L134 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 6071 states, 1209 states have (on average 4.686517783291976) internal successors, (5666), 1210 states have internal predecessors, (5666), 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 09:25:04,823 INFO L276 IsEmpty]: Start isEmpty. Operand has 6071 states, 1209 states have (on average 4.686517783291976) internal successors, (5666), 1210 states have internal predecessors, (5666), 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 09:25:04,843 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-01 09:25:04,843 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/2) [2021-07-01 09:25:04,845 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-01 09:25:04,856 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-01 09:25:04,856 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-01 09:25:04,856 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-01 09:25:04,856 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-01 09:25:04,856 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-01 09:25:04,856 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-01 09:25:04,856 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-01 09:25:04,857 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadWithAssertThread1of1ForFork1======== [2021-07-01 09:25:04,861 INFO L112 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 53 places, 39 transitions, 108 flow [2021-07-01 09:25:05,308 INFO L134 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 6071 states, 4858 states have (on average 6.135858377933306) internal successors, (29808), 4858 states have internal predecessors, (29808), 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 09:25:05,328 INFO L276 IsEmpty]: Start isEmpty. Operand has 6071 states, 4858 states have (on average 6.135858377933306) internal successors, (29808), 4858 states have internal predecessors, (29808), 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 09:25:05,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-07-01 09:25:05,329 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 09:25:05,329 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 09:25:05,330 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:25:05,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:25:05,334 INFO L82 PathProgramCache]: Analyzing trace with hash -851249942, now seen corresponding path program 1 times [2021-07-01 09:25:05,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:25:05,340 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095782828] [2021-07-01 09:25:05,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:25:05,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:25:05,430 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 09:25:05,431 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:25:05,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095782828] [2021-07-01 09:25:05,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095782828] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 09:25:05,431 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 09:25:05,432 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-01 09:25:05,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980476824] [2021-07-01 09:25:05,435 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-01 09:25:05,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:25:05,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-01 09:25:05,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-07-01 09:25:05,457 INFO L87 Difference]: Start difference. First operand has 6071 states, 4858 states have (on average 6.135858377933306) internal successors, (29808), 4858 states have internal predecessors, (29808), 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 4 states, 3 states have (on average 2.6666666666666665) 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) [2021-07-01 09:25:05,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-01 09:25:05,743 INFO L93 Difference]: Finished difference Result 10935 states and 67448 transitions. [2021-07-01 09:25:05,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-01 09:25:05,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) 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 [2021-07-01 09:25:05,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-01 09:25:05,878 INFO L225 Difference]: With dead ends: 10935 [2021-07-01 09:25:05,878 INFO L226 Difference]: Without dead ends: 10935 [2021-07-01 09:25:05,882 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-07-01 09:25:06,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10935 states. [2021-07-01 09:25:06,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10935 to 10743. [2021-07-01 09:25:06,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10743 states, 10742 states have (on average 6.201452243530069) internal successors, (66616), 10742 states have internal predecessors, (66616), 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 09:25:06,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10743 states to 10743 states and 66616 transitions. [2021-07-01 09:25:06,625 INFO L78 Accepts]: Start accepts. Automaton has 10743 states and 66616 transitions. Word has length 8 [2021-07-01 09:25:06,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-01 09:25:06,625 INFO L482 AbstractCegarLoop]: Abstraction has 10743 states and 66616 transitions. [2021-07-01 09:25:06,625 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 2.6666666666666665) 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) [2021-07-01 09:25:06,626 INFO L276 IsEmpty]: Start isEmpty. Operand 10743 states and 66616 transitions. [2021-07-01 09:25:06,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-07-01 09:25:06,626 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 09:25:06,626 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 09:25:06,627 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-01 09:25:06,627 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:25:06,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:25:06,633 INFO L82 PathProgramCache]: Analyzing trace with hash -2006913109, now seen corresponding path program 1 times [2021-07-01 09:25:06,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:25:06,635 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788555416] [2021-07-01 09:25:06,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:25:06,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:25:06,662 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 09:25:06,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:25:06,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788555416] [2021-07-01 09:25:06,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788555416] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 09:25:06,663 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 09:25:06,663 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-01 09:25:06,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617150476] [2021-07-01 09:25:06,664 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-01 09:25:06,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:25:06,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-01 09:25:06,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-01 09:25:06,666 INFO L87 Difference]: Start difference. First operand 10743 states and 66616 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:25:06,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-01 09:25:06,901 INFO L93 Difference]: Finished difference Result 9199 states and 46089 transitions. [2021-07-01 09:25:06,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 09:25:06,902 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-07-01 09:25:06,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-01 09:25:06,932 INFO L225 Difference]: With dead ends: 9199 [2021-07-01 09:25:06,936 INFO L226 Difference]: Without dead ends: 4911 [2021-07-01 09:25:06,937 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-01 09:25:06,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4911 states. [2021-07-01 09:25:07,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4911 to 4911. [2021-07-01 09:25:07,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4911 states, 4910 states have (on average 4.856415478615071) internal successors, (23845), 4910 states have internal predecessors, (23845), 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 09:25:07,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4911 states to 4911 states and 23845 transitions. [2021-07-01 09:25:07,141 INFO L78 Accepts]: Start accepts. Automaton has 4911 states and 23845 transitions. Word has length 10 [2021-07-01 09:25:07,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-01 09:25:07,141 INFO L482 AbstractCegarLoop]: Abstraction has 4911 states and 23845 transitions. [2021-07-01 09:25:07,141 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:25:07,141 INFO L276 IsEmpty]: Start isEmpty. Operand 4911 states and 23845 transitions. [2021-07-01 09:25:07,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-07-01 09:25:07,143 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 09:25:07,143 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 09:25:07,143 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-01 09:25:07,143 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:25:07,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:25:07,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1889909612, now seen corresponding path program 1 times [2021-07-01 09:25:07,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:25:07,145 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027926171] [2021-07-01 09:25:07,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:25:07,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:25:07,202 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 09:25:07,203 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:25:07,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027926171] [2021-07-01 09:25:07,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027926171] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 09:25:07,205 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 09:25:07,205 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-01 09:25:07,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427362099] [2021-07-01 09:25:07,209 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-01 09:25:07,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:25:07,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-01 09:25:07,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-07-01 09:25:07,211 INFO L87 Difference]: Start difference. First operand 4911 states and 23845 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 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 09:25:07,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-01 09:25:07,433 INFO L93 Difference]: Finished difference Result 10247 states and 49660 transitions. [2021-07-01 09:25:07,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:25:07,433 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 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 09:25:07,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-01 09:25:07,498 INFO L225 Difference]: With dead ends: 10247 [2021-07-01 09:25:07,499 INFO L226 Difference]: Without dead ends: 9025 [2021-07-01 09:25:07,499 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.5ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-07-01 09:25:07,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9025 states. [2021-07-01 09:25:07,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9025 to 5557. [2021-07-01 09:25:07,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5557 states, 5556 states have (on average 4.89056875449964) internal successors, (27172), 5556 states have internal predecessors, (27172), 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 09:25:07,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5557 states to 5557 states and 27172 transitions. [2021-07-01 09:25:07,765 INFO L78 Accepts]: Start accepts. Automaton has 5557 states and 27172 transitions. Word has length 13 [2021-07-01 09:25:07,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-01 09:25:07,766 INFO L482 AbstractCegarLoop]: Abstraction has 5557 states and 27172 transitions. [2021-07-01 09:25:07,767 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 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 09:25:07,767 INFO L276 IsEmpty]: Start isEmpty. Operand 5557 states and 27172 transitions. [2021-07-01 09:25:07,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-01 09:25:07,771 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 09:25:07,771 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 09:25:07,771 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-01 09:25:07,771 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:25:07,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:25:07,772 INFO L82 PathProgramCache]: Analyzing trace with hash -999040311, now seen corresponding path program 1 times [2021-07-01 09:25:07,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:25:07,772 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495330829] [2021-07-01 09:25:07,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:25:07,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:25:07,823 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 09:25:07,823 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:25:07,823 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495330829] [2021-07-01 09:25:07,823 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495330829] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 09:25:07,824 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 09:25:07,824 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-01 09:25:07,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906564105] [2021-07-01 09:25:07,824 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-01 09:25:07,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:25:07,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-01 09:25:07,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-07-01 09:25:07,825 INFO L87 Difference]: Start difference. First operand 5557 states and 27172 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 09:25:08,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-01 09:25:08,044 INFO L93 Difference]: Finished difference Result 12225 states and 59770 transitions. [2021-07-01 09:25:08,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 09:25:08,044 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 09:25:08,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-01 09:25:08,078 INFO L225 Difference]: With dead ends: 12225 [2021-07-01 09:25:08,078 INFO L226 Difference]: Without dead ends: 9602 [2021-07-01 09:25:08,078 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.5ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-07-01 09:25:08,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9602 states. [2021-07-01 09:25:08,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9602 to 5455. [2021-07-01 09:25:08,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5455 states, 5454 states have (on average 4.930876420975431) internal successors, (26893), 5454 states have internal predecessors, (26893), 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 09:25:08,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5455 states to 5455 states and 26893 transitions. [2021-07-01 09:25:08,335 INFO L78 Accepts]: Start accepts. Automaton has 5455 states and 26893 transitions. Word has length 16 [2021-07-01 09:25:08,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-01 09:25:08,336 INFO L482 AbstractCegarLoop]: Abstraction has 5455 states and 26893 transitions. [2021-07-01 09:25:08,336 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 09:25:08,336 INFO L276 IsEmpty]: Start isEmpty. Operand 5455 states and 26893 transitions. [2021-07-01 09:25:08,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-07-01 09:25:08,340 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 09:25:08,340 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 09:25:08,340 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-01 09:25:08,340 INFO L430 AbstractCegarLoop]: === Iteration 5 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:25:08,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:25:08,341 INFO L82 PathProgramCache]: Analyzing trace with hash -979695032, now seen corresponding path program 1 times [2021-07-01 09:25:08,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:25:08,341 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79951450] [2021-07-01 09:25:08,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:25:08,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:25:08,376 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 09:25:08,376 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:25:08,376 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79951450] [2021-07-01 09:25:08,376 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79951450] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 09:25:08,376 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 09:25:08,377 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-01 09:25:08,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419135936] [2021-07-01 09:25:08,377 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-01 09:25:08,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:25:08,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-01 09:25:08,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-07-01 09:25:08,377 INFO L87 Difference]: Start difference. First operand 5455 states and 26893 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 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 09:25:08,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-01 09:25:08,638 INFO L93 Difference]: Finished difference Result 10873 states and 53477 transitions. [2021-07-01 09:25:08,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:25:08,638 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 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 19 [2021-07-01 09:25:08,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-01 09:25:08,676 INFO L225 Difference]: With dead ends: 10873 [2021-07-01 09:25:08,677 INFO L226 Difference]: Without dead ends: 7158 [2021-07-01 09:25:08,677 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.5ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-07-01 09:25:08,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7158 states. [2021-07-01 09:25:08,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7158 to 4589. [2021-07-01 09:25:08,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4589 states, 4588 states have (on average 4.9553182214472535) internal successors, (22735), 4588 states have internal predecessors, (22735), 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 09:25:08,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4589 states to 4589 states and 22735 transitions. [2021-07-01 09:25:08,836 INFO L78 Accepts]: Start accepts. Automaton has 4589 states and 22735 transitions. Word has length 19 [2021-07-01 09:25:08,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-01 09:25:08,837 INFO L482 AbstractCegarLoop]: Abstraction has 4589 states and 22735 transitions. [2021-07-01 09:25:08,837 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 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 09:25:08,837 INFO L276 IsEmpty]: Start isEmpty. Operand 4589 states and 22735 transitions. [2021-07-01 09:25:08,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-07-01 09:25:08,840 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 09:25:08,840 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 09:25:08,840 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-01 09:25:08,840 INFO L430 AbstractCegarLoop]: === Iteration 6 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:25:08,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:25:08,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1039629269, now seen corresponding path program 1 times [2021-07-01 09:25:08,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:25:08,841 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249319502] [2021-07-01 09:25:08,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:25:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:25:08,970 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 09:25:08,970 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:25:08,970 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249319502] [2021-07-01 09:25:08,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249319502] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 09:25:08,970 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 09:25:08,971 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-01 09:25:08,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698634152] [2021-07-01 09:25:08,971 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-01 09:25:08,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:25:08,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-01 09:25:08,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-07-01 09:25:08,972 INFO L87 Difference]: Start difference. First operand 4589 states and 22735 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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 09:25:09,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-01 09:25:09,082 INFO L93 Difference]: Finished difference Result 3617 states and 17659 transitions. [2021-07-01 09:25:09,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-01 09:25:09,082 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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 22 [2021-07-01 09:25:09,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-01 09:25:09,083 INFO L225 Difference]: With dead ends: 3617 [2021-07-01 09:25:09,083 INFO L226 Difference]: Without dead ends: 0 [2021-07-01 09:25:09,083 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.8ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-07-01 09:25:09,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-01 09:25:09,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-01 09:25:09,083 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 09:25:09,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-01 09:25:09,084 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2021-07-01 09:25:09,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-01 09:25:09,084 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-01 09:25:09,084 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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 09:25:09,084 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-01 09:25:09,084 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-01 09:25:09,084 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-01 09:25:09,084 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadWithAssertThread1of1ForFork1 was SAFE (2/2) [2021-07-01 09:25:09,084 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-01 09:25:09,086 INFO L202 PluginConnector]: Adding new model bluetooth-customized05.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 09:25:09 BasicIcfg [2021-07-01 09:25:09,086 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-01 09:25:09,087 INFO L168 Benchmark]: Toolchain (without parser) took 5441.84 ms. Allocated memory was 179.3 MB in the beginning and 2.5 GB in the end (delta: 2.3 GB). Free memory was 158.2 MB in the beginning and 2.1 GB in the end (delta: -1.9 GB). Peak memory consumption was 363.9 MB. Max. memory is 8.0 GB. [2021-07-01 09:25:09,088 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 179.3 MB. Free memory is still 159.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-01 09:25:09,088 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.65 ms. Allocated memory is still 179.3 MB. Free memory was 158.0 MB in the beginning and 156.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-01 09:25:09,088 INFO L168 Benchmark]: Boogie Preprocessor took 13.38 ms. Allocated memory is still 179.3 MB. Free memory was 156.2 MB in the beginning and 155.4 MB in the end (delta: 880.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-01 09:25:09,088 INFO L168 Benchmark]: RCFGBuilder took 241.40 ms. Allocated memory is still 179.3 MB. Free memory was 155.2 MB in the beginning and 140.7 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-07-01 09:25:09,089 INFO L168 Benchmark]: TraceAbstraction took 5153.16 ms. Allocated memory was 179.3 MB in the beginning and 2.5 GB in the end (delta: 2.3 GB). Free memory was 140.2 MB in the beginning and 2.1 GB in the end (delta: -2.0 GB). Peak memory consumption was 346.0 MB. Max. memory is 8.0 GB. [2021-07-01 09:25:09,090 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 0.12 ms. Allocated memory is still 179.3 MB. Free memory is still 159.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 29.65 ms. Allocated memory is still 179.3 MB. Free memory was 158.0 MB in the beginning and 156.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 13.38 ms. Allocated memory is still 179.3 MB. Free memory was 156.2 MB in the beginning and 155.4 MB in the end (delta: 880.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 241.40 ms. Allocated memory is still 179.3 MB. Free memory was 155.2 MB in the beginning and 140.7 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5153.16 ms. Allocated memory was 179.3 MB in the beginning and 2.5 GB in the end (delta: 2.3 GB). Free memory was 140.2 MB in the beginning and 2.1 GB in the end (delta: -2.0 GB). Peak memory consumption was 346.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 38]: 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 10 procedures, 55 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 847.2ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 23.9ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 820.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=6071occurred 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: DeviceThreadWithAssertThread1of1ForFork1 with 1 thread instances CFG has 10 procedures, 55 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4228.3ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 33.4ms, AutomataDifference: 1671.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 451.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 249 SDtfs, 310 SDslu, 336 SDs, 0 SdLazy, 478 SolverSat, 168 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 332.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 79.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=10743occurred in iteration=1, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1618.1ms AutomataMinimizationTime, 6 MinimizatonAttempts, 10376 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 11.2ms SsaConstructionTime, 60.7ms SatisfiabilityAnalysisTime, 263.2ms InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 228 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...