/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-correct08.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-1c3aa5735269c4be989a50fc1da9ea7b9492ef29-1c3aa57 [2021-07-01 09:25:02,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-01 09:25:02,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-01 09:25:02,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-01 09:25:02,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-01 09:25:02,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-01 09:25:02,846 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-01 09:25:02,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-01 09:25:02,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-01 09:25:02,857 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-01 09:25:02,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-01 09:25:02,858 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-01 09:25:02,858 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-01 09:25:02,860 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-01 09:25:02,861 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-01 09:25:02,862 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-01 09:25:02,864 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-01 09:25:02,865 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-01 09:25:02,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-01 09:25:02,874 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-01 09:25:02,875 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-01 09:25:02,877 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-01 09:25:02,879 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-01 09:25:02,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-01 09:25:02,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-01 09:25:02,881 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-01 09:25:02,881 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-01 09:25:02,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-01 09:25:02,882 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-01 09:25:02,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-01 09:25:02,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-01 09:25:02,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-01 09:25:02,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-01 09:25:02,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-01 09:25:02,885 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-01 09:25:02,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-01 09:25:02,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-01 09:25:02,886 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-01 09:25:02,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-01 09:25:02,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-01 09:25:02,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-01 09:25:02,891 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 09:25:02,943 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-01 09:25:02,944 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-01 09:25:02,944 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-01 09:25:02,944 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-01 09:25:02,946 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-01 09:25:02,946 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-01 09:25:02,946 INFO L138 SettingsManager]: * Use SBE=true [2021-07-01 09:25:02,946 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-01 09:25:02,947 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-01 09:25:02,947 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-01 09:25:02,947 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-01 09:25:02,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-01 09:25:02,948 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-01 09:25:02,948 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-01 09:25:02,948 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-01 09:25:02,948 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-01 09:25:02,948 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-01 09:25:02,948 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-01 09:25:02,948 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-01 09:25:02,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-01 09:25:02,948 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-01 09:25:02,948 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-01 09:25:02,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-01 09:25:02,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-01 09:25:02,949 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-01 09:25:02,956 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-01 09:25:02,957 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-01 09:25:02,957 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-01 09:25:02,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-01 09:25:02,957 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-01 09:25:02,957 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-01 09:25:02,957 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-01 09:25:03,284 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-01 09:25:03,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-01 09:25:03,394 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-01 09:25:03,395 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-01 09:25:03,395 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-01 09:25:03,396 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-correct08.bpl [2021-07-01 09:25:03,396 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-correct08.bpl' [2021-07-01 09:25:03,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-01 09:25:03,416 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-01 09:25:03,419 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-01 09:25:03,419 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-01 09:25:03,419 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-01 09:25:03,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-correct08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:03" (1/1) ... [2021-07-01 09:25:03,434 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-correct08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:03" (1/1) ... [2021-07-01 09:25:03,444 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-01 09:25:03,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-01 09:25:03,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-01 09:25:03,446 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-01 09:25:03,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-correct08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:03" (1/1) ... [2021-07-01 09:25:03,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-correct08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:03" (1/1) ... [2021-07-01 09:25:03,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-correct08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:03" (1/1) ... [2021-07-01 09:25:03,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-correct08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:03" (1/1) ... [2021-07-01 09:25:03,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-correct08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:03" (1/1) ... [2021-07-01 09:25:03,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-correct08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:03" (1/1) ... [2021-07-01 09:25:03,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-correct08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:03" (1/1) ... [2021-07-01 09:25:03,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-01 09:25:03,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-01 09:25:03,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-01 09:25:03,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-01 09:25:03,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-correct08.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 09:25:03,526 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThreadWithAssert given in one single declaration [2021-07-01 09:25:03,527 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThreadWithAssert [2021-07-01 09:25:03,527 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThreadWithAssert [2021-07-01 09:25:03,527 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-07-01 09:25:03,527 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-07-01 09:25:03,527 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-07-01 09:25:03,527 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-07-01 09:25:03,527 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-07-01 09:25:03,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-07-01 09:25:03,528 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-01 09:25:03,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-01 09:25:03,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-01 09:25:03,529 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 09:25:03,736 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-01 09:25:03,737 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-07-01 09:25:03,737 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadWithAssertEXIT is neither atomic block end nor error location. [2021-07-01 09:25:03,738 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-07-01 09:25:03,739 INFO L202 PluginConnector]: Adding new model bluetooth-correct08.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 09:25:03 BoogieIcfgContainer [2021-07-01 09:25:03,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-01 09:25:03,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-01 09:25:03,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-01 09:25:03,742 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-01 09:25:03,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-correct08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:03" (1/2) ... [2021-07-01 09:25:03,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@239cb609 and model type bluetooth-correct08.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 09:25:03, skipping insertion in model container [2021-07-01 09:25:03,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-correct08.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 09:25:03" (2/2) ... [2021-07-01 09:25:03,744 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth-correct08.bpl [2021-07-01 09:25:03,748 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-01 09:25:03,748 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-01 09:25:03,748 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-01 09:25:03,749 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-01 09:25:03,801 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-01 09:25:03,816 INFO L255 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-07-01 09:25:03,835 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-01 09:25:03,836 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-01 09:25:03,836 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-01 09:25:03,836 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-01 09:25:03,836 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-01 09:25:03,836 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-01 09:25:03,836 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-01 09:25:03,836 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-01 09:25:03,849 INFO L112 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 74 places, 54 transitions, 153 flow [2021-07-01 09:30:03,774 INFO L134 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 164021 states, 32799 states have (on average 7.667947193511997) internal successors, (251501), 32800 states have internal predecessors, (251501), 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 09:30:03,882 INFO L276 IsEmpty]: Start isEmpty. Operand has 164021 states, 32799 states have (on average 7.667947193511997) internal successors, (251501), 32800 states have internal predecessors, (251501), 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 09:30:04,315 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-01 09:30:04,316 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/2) [2021-07-01 09:30:04,318 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-01 09:30:04,328 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-01 09:30:04,328 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-01 09:30:04,328 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-01 09:30:04,328 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-01 09:30:04,328 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-01 09:30:04,328 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-01 09:30:04,329 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-01 09:30:04,329 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadWithAssertThread1of1ForFork1======== [2021-07-01 09:30:04,334 INFO L112 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 74 places, 54 transitions, 153 flow [2021-07-01 09:35:17,106 INFO L134 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 164021 states, 131218 states have (on average 9.133472541876877) internal successors, (1198476), 131218 states have internal predecessors, (1198476), 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 09:35:17,363 INFO L276 IsEmpty]: Start isEmpty. Operand has 164021 states, 131218 states have (on average 9.133472541876877) internal successors, (1198476), 131218 states have internal predecessors, (1198476), 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 09:35:17,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-07-01 09:35:17,363 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 09:35:17,364 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 09:35:17,364 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:35:17,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:35:17,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1804539990, now seen corresponding path program 1 times [2021-07-01 09:35:17,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:35:17,373 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988553001] [2021-07-01 09:35:17,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:35:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:35:17,455 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 09:35:17,456 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:35:17,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988553001] [2021-07-01 09:35:17,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988553001] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 09:35:17,456 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 09:35:17,457 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-01 09:35:17,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414702034] [2021-07-01 09:35:17,459 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-01 09:35:17,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:35:17,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-01 09:35:17,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-01 09:35:17,724 INFO L87 Difference]: Start difference. First operand has 164021 states, 131218 states have (on average 9.133472541876877) internal successors, (1198476), 131218 states have internal predecessors, (1198476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:35:21,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-01 09:35:21,023 INFO L93 Difference]: Finished difference Result 142153 states and 1283769 transitions. [2021-07-01 09:35:21,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 09:35:21,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-07-01 09:35:21,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-01 09:35:22,616 INFO L225 Difference]: With dead ends: 142153 [2021-07-01 09:35:22,617 INFO L226 Difference]: Without dead ends: 109351 [2021-07-01 09:35:22,618 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-01 09:35:27,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109351 states. [2021-07-01 09:35:32,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109351 to 109351. [2021-07-01 09:35:32,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109351 states, 109350 states have (on average 9.000036579789667) internal successors, (984154), 109350 states have internal predecessors, (984154), 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 09:35:34,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109351 states to 109351 states and 984154 transitions. [2021-07-01 09:35:34,345 INFO L78 Accepts]: Start accepts. Automaton has 109351 states and 984154 transitions. Word has length 8 [2021-07-01 09:35:34,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-01 09:35:34,345 INFO L482 AbstractCegarLoop]: Abstraction has 109351 states and 984154 transitions. [2021-07-01 09:35:34,346 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:35:34,346 INFO L276 IsEmpty]: Start isEmpty. Operand 109351 states and 984154 transitions. [2021-07-01 09:35:34,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-07-01 09:35:34,347 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 09:35:34,347 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 09:35:34,348 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-01 09:35:34,348 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:35:34,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:35:34,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1634833880, now seen corresponding path program 1 times [2021-07-01 09:35:34,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:35:34,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384390401] [2021-07-01 09:35:34,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:35:34,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:35:34,438 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 09:35:34,438 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:35:34,439 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384390401] [2021-07-01 09:35:34,439 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384390401] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 09:35:34,439 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 09:35:34,439 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-01 09:35:34,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714055637] [2021-07-01 09:35:34,440 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-01 09:35:34,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:35:34,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-01 09:35:34,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-07-01 09:35:34,441 INFO L87 Difference]: Start difference. First operand 109351 states and 984154 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:35:38,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-01 09:35:38,155 INFO L93 Difference]: Finished difference Result 204200 states and 1837155 transitions. [2021-07-01 09:35:38,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:35:38,156 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-07-01 09:35:38,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-01 09:35:40,643 INFO L225 Difference]: With dead ends: 204200 [2021-07-01 09:35:40,656 INFO L226 Difference]: Without dead ends: 204200 [2021-07-01 09:35:40,657 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 19.1ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-07-01 09:35:46,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204200 states. [2021-07-01 09:35:55,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204200 to 203184. [2021-07-01 09:35:55,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203184 states, 203183 states have (on average 9.01200887869556) internal successors, (1831087), 203183 states have internal predecessors, (1831087), 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 09:35:58,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203184 states to 203184 states and 1831087 transitions. [2021-07-01 09:35:58,687 INFO L78 Accepts]: Start accepts. Automaton has 203184 states and 1831087 transitions. Word has length 12 [2021-07-01 09:35:58,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-01 09:35:58,688 INFO L482 AbstractCegarLoop]: Abstraction has 203184 states and 1831087 transitions. [2021-07-01 09:35:58,688 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:35:58,688 INFO L276 IsEmpty]: Start isEmpty. Operand 203184 states and 1831087 transitions. [2021-07-01 09:35:58,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-07-01 09:35:58,689 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 09:35:58,689 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 09:35:58,690 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-01 09:35:58,690 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:35:58,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:35:58,690 INFO L82 PathProgramCache]: Analyzing trace with hash -918956150, now seen corresponding path program 2 times [2021-07-01 09:35:58,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:35:58,691 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922389120] [2021-07-01 09:35:58,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:35:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:35:58,704 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 09:35:58,704 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:35:58,704 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922389120] [2021-07-01 09:35:58,704 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922389120] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 09:35:58,704 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 09:35:58,705 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-01 09:35:58,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150868740] [2021-07-01 09:35:58,705 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-01 09:35:58,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:35:58,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-01 09:35:58,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-01 09:35:58,706 INFO L87 Difference]: Start difference. First operand 203184 states and 1831087 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 09:36:02,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-01 09:36:02,399 INFO L93 Difference]: Finished difference Result 189139 states and 1356100 transitions. [2021-07-01 09:36:02,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 09:36:02,404 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 09:36:02,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-01 09:36:03,991 INFO L225 Difference]: With dead ends: 189139 [2021-07-01 09:36:03,992 INFO L226 Difference]: Without dead ends: 101925 [2021-07-01 09:36:03,993 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-01 09:36:06,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101925 states.