/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-correct06.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-13 20:51:36,389 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-13 20:51:36,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-13 20:51:36,421 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-13 20:51:36,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-13 20:51:36,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-13 20:51:36,467 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-13 20:51:36,470 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 [2021-07-13 20:51:36,498 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-13 20:51:36,499 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-13 20:51:36,499 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-13 20:51:36,499 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-13 20:51:36,501 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-13 20:51:36,501 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-13 20:51:36,501 INFO L138 SettingsManager]: * Use SBE=true [2021-07-13 20:51:36,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-13 20:51:36,502 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-13 20:51:36,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-13 20:51:36,502 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-13 20:51:36,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-13 20:51:36,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-13 20:51:36,503 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-13 20:51:36,503 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-13 20:51:36,503 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-13 20:51:36,503 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-13 20:51:36,503 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-13 20:51:36,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-13 20:51:36,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-13 20:51:36,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-13 20:51:36,504 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-13 20:51:36,504 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-13 20:51:36,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-13 20:51:36,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-13 20:51:36,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-13 20:51:36,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-13 20:51:36,504 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-13 20:51:36,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-13 20:51:36,504 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-13 20:51:36,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-13 20:51:36,505 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-13 20:51:36,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-13 20:51:36,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-13 20:51:36,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-13 20:51:36,735 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-13 20:51:36,736 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-13 20:51:36,737 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-correct06.bpl [2021-07-13 20:51:36,737 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-correct06.bpl' [2021-07-13 20:51:36,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-13 20:51:36,755 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-13 20:51:36,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-13 20:51:36,755 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-13 20:51:36,755 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-13 20:51:36,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-correct06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:51:36" (1/1) ... [2021-07-13 20:51:36,768 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-correct06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:51:36" (1/1) ... [2021-07-13 20:51:36,778 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-13 20:51:36,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-13 20:51:36,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-13 20:51:36,779 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-13 20:51:36,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-correct06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:51:36" (1/1) ... [2021-07-13 20:51:36,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-correct06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:51:36" (1/1) ... [2021-07-13 20:51:36,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-correct06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:51:36" (1/1) ... [2021-07-13 20:51:36,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-correct06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:51:36" (1/1) ... [2021-07-13 20:51:36,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-correct06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:51:36" (1/1) ... [2021-07-13 20:51:36,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-correct06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:51:36" (1/1) ... [2021-07-13 20:51:36,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-correct06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:51:36" (1/1) ... [2021-07-13 20:51:36,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-13 20:51:36,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-13 20:51:36,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-13 20:51:36,789 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-13 20:51:36,789 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-correct06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:51:36" (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 [2021-07-13 20:51:36,846 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThreadWithAssert given in one single declaration [2021-07-13 20:51:36,846 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThreadWithAssert [2021-07-13 20:51:36,846 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThreadWithAssert [2021-07-13 20:51:36,847 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-07-13 20:51:36,847 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-07-13 20:51:36,847 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-07-13 20:51:36,847 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-07-13 20:51:36,847 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-07-13 20:51:36,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-07-13 20:51:36,847 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-13 20:51:36,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-13 20:51:36,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-13 20:51:36,848 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-13 20:51:36,992 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-13 20:51:36,992 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-07-13 20:51:36,992 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadWithAssertEXIT is neither atomic block end nor error location. [2021-07-13 20:51:36,993 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-07-13 20:51:36,994 INFO L202 PluginConnector]: Adding new model bluetooth-correct06.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:51:36 BoogieIcfgContainer [2021-07-13 20:51:36,994 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-13 20:51:36,995 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-13 20:51:36,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-13 20:51:36,997 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-13 20:51:36,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-correct06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:51:36" (1/2) ... [2021-07-13 20:51:36,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44d77ded and model type bluetooth-correct06.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:51:36, skipping insertion in model container [2021-07-13 20:51:36,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-correct06.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:51:36" (2/2) ... [2021-07-13 20:51:36,998 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth-correct06.bpl [2021-07-13 20:51:37,002 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-13 20:51:37,002 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-13 20:51:37,002 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-13 20:51:37,003 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-13 20:51:37,029 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-13 20:51:37,044 INFO L255 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-07-13 20:51:37,056 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 20:51:37,056 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 20:51:37,056 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 20:51:37,056 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 20:51:37,057 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 20:51:37,057 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 20:51:37,057 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 20:51:37,057 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-13 20:51:37,064 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 60 places, 44 transitions, 123 flow [2021-07-13 20:51:37,281 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3641 states, 3639 states have (on average 5.6749106897499315) internal successors, (20651), 3640 states have internal predecessors, (20651), 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) [2021-07-13 20:51:37,298 INFO L276 IsEmpty]: Start isEmpty. Operand has 3641 states, 3639 states have (on average 5.6749106897499315) internal successors, (20651), 3640 states have internal predecessors, (20651), 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) [2021-07-13 20:51:37,332 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-13 20:51:37,333 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/2) [2021-07-13 20:51:37,334 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-13 20:51:37,345 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 20:51:37,345 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 20:51:37,345 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 20:51:37,345 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 20:51:37,346 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 20:51:37,346 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 20:51:37,346 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 20:51:37,346 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadWithAssertThread1of1ForFork1======== [2021-07-13 20:51:37,350 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 60 places, 44 transitions, 123 flow [2021-07-13 20:51:37,970 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 14579 states, 14578 states have (on average 7.134311976951571) internal successors, (104004), 14578 states have internal predecessors, (104004), 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) [2021-07-13 20:51:38,072 INFO L276 IsEmpty]: Start isEmpty. Operand has 14579 states, 14578 states have (on average 7.134311976951571) internal successors, (104004), 14578 states have internal predecessors, (104004), 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) [2021-07-13 20:51:38,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-07-13 20:51:38,073 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:38,074 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:51:38,074 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:38,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:38,077 INFO L82 PathProgramCache]: Analyzing trace with hash 529119306, now seen corresponding path program 1 times [2021-07-13 20:51:38,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:38,083 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782852637] [2021-07-13 20:51:38,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:38,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:38,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:51:38,163 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:38,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782852637] [2021-07-13 20:51:38,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782852637] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:38,164 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:38,164 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-13 20:51:38,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150843250] [2021-07-13 20:51:38,167 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-13 20:51:38,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:38,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-13 20:51:38,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 20:51:38,222 INFO L87 Difference]: Start difference. First operand has 14579 states, 14578 states have (on average 7.134311976951571) internal successors, (104004), 14578 states have internal predecessors, (104004), 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) [2021-07-13 20:51:38,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:38,688 INFO L93 Difference]: Finished difference Result 15793 states and 111051 transitions. [2021-07-13 20:51:38,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 20:51:38,689 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 [2021-07-13 20:51:38,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:38,936 INFO L225 Difference]: With dead ends: 15793 [2021-07-13 20:51:38,937 INFO L226 Difference]: Without dead ends: 12151 [2021-07-13 20:51:38,938 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 20:51:39,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12151 states. [2021-07-13 20:51:39,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12151 to 12151. [2021-07-13 20:51:39,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12151 states, 12150 states have (on average 7.000329218106996) internal successors, (85054), 12150 states have internal predecessors, (85054), 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) [2021-07-13 20:51:39,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12151 states to 12151 states and 85054 transitions. [2021-07-13 20:51:39,775 INFO L78 Accepts]: Start accepts. Automaton has 12151 states and 85054 transitions. Word has length 8 [2021-07-13 20:51:39,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:39,775 INFO L482 AbstractCegarLoop]: Abstraction has 12151 states and 85054 transitions. [2021-07-13 20:51:39,775 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) [2021-07-13 20:51:39,775 INFO L276 IsEmpty]: Start isEmpty. Operand 12151 states and 85054 transitions. [2021-07-13 20:51:39,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-07-13 20:51:39,776 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:39,777 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:51:39,777 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-13 20:51:39,777 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:39,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:39,778 INFO L82 PathProgramCache]: Analyzing trace with hash -733943480, now seen corresponding path program 1 times [2021-07-13 20:51:39,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:39,778 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287494992] [2021-07-13 20:51:39,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:39,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:51:39,804 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:39,804 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287494992] [2021-07-13 20:51:39,805 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287494992] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:39,805 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:39,805 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-13 20:51:39,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406242086] [2021-07-13 20:51:39,806 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-13 20:51:39,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:39,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-13 20:51:39,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 20:51:39,808 INFO L87 Difference]: Start difference. First operand 12151 states and 85054 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) [2021-07-13 20:51:40,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:40,071 INFO L93 Difference]: Finished difference Result 12151 states and 65835 transitions. [2021-07-13 20:51:40,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 20:51:40,071 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 [2021-07-13 20:51:40,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:40,102 INFO L225 Difference]: With dead ends: 12151 [2021-07-13 20:51:40,103 INFO L226 Difference]: Without dead ends: 6076 [2021-07-13 20:51:40,103 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 20:51:40,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6076 states. [2021-07-13 20:51:40,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6076 to 6076. [2021-07-13 20:51:40,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6076 states, 6075 states have (on average 5.303539094650206) internal successors, (32219), 6075 states have internal predecessors, (32219), 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) [2021-07-13 20:51:40,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6076 states to 6076 states and 32219 transitions. [2021-07-13 20:51:40,395 INFO L78 Accepts]: Start accepts. Automaton has 6076 states and 32219 transitions. Word has length 12 [2021-07-13 20:51:40,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:40,396 INFO L482 AbstractCegarLoop]: Abstraction has 6076 states and 32219 transitions. [2021-07-13 20:51:40,396 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:51:40,396 INFO L276 IsEmpty]: Start isEmpty. Operand 6076 states and 32219 transitions. [2021-07-13 20:51:40,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-07-13 20:51:40,397 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:40,397 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:51:40,397 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-13 20:51:40,397 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:40,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:40,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1496623944, now seen corresponding path program 2 times [2021-07-13 20:51:40,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:40,398 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641589805] [2021-07-13 20:51:40,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:40,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:40,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:51:40,538 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:40,540 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641589805] [2021-07-13 20:51:40,540 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641589805] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:40,540 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:40,541 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-13 20:51:40,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078808396] [2021-07-13 20:51:40,545 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 20:51:40,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:40,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 20:51:40,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-07-13 20:51:40,546 INFO L87 Difference]: Start difference. First operand 6076 states and 32219 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) [2021-07-13 20:51:40,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:40,719 INFO L93 Difference]: Finished difference Result 11413 states and 63710 transitions. [2021-07-13 20:51:40,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 20:51:40,720 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 [2021-07-13 20:51:40,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:40,776 INFO L225 Difference]: With dead ends: 11413 [2021-07-13 20:51:40,777 INFO L226 Difference]: Without dead ends: 11217 [2021-07-13 20:51:40,777 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 21.5ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-07-13 20:51:40,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11217 states. [2021-07-13 20:51:41,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11217 to 10493. [2021-07-13 20:51:41,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10493 states, 10492 states have (on average 5.675467022493328) internal successors, (59547), 10492 states have internal predecessors, (59547), 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) [2021-07-13 20:51:41,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10493 states to 10493 states and 59547 transitions. [2021-07-13 20:51:41,227 INFO L78 Accepts]: Start accepts. Automaton has 10493 states and 59547 transitions. Word has length 12 [2021-07-13 20:51:41,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:41,228 INFO L482 AbstractCegarLoop]: Abstraction has 10493 states and 59547 transitions. [2021-07-13 20:51:41,228 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) [2021-07-13 20:51:41,228 INFO L276 IsEmpty]: Start isEmpty. Operand 10493 states and 59547 transitions. [2021-07-13 20:51:41,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-07-13 20:51:41,235 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:41,235 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:51:41,235 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-13 20:51:41,236 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:41,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:41,237 INFO L82 PathProgramCache]: Analyzing trace with hash -971976774, now seen corresponding path program 1 times [2021-07-13 20:51:41,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:41,237 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366503399] [2021-07-13 20:51:41,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:41,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:41,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:51:41,319 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:41,319 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366503399] [2021-07-13 20:51:41,320 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366503399] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:41,320 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:41,320 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 20:51:41,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692188458] [2021-07-13 20:51:41,320 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-13 20:51:41,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:41,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-13 20:51:41,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-07-13 20:51:41,321 INFO L87 Difference]: Start difference. First operand 10493 states and 59547 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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) [2021-07-13 20:51:41,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:41,673 INFO L93 Difference]: Finished difference Result 18006 states and 103556 transitions. [2021-07-13 20:51:41,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-13 20:51:41,674 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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 15 [2021-07-13 20:51:41,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:41,869 INFO L225 Difference]: With dead ends: 18006 [2021-07-13 20:51:41,869 INFO L226 Difference]: Without dead ends: 16818 [2021-07-13 20:51:41,869 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 24.4ms TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-07-13 20:51:41,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16818 states. [2021-07-13 20:51:42,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16818 to 12243. [2021-07-13 20:51:42,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12243 states, 12242 states have (on average 5.727658879268094) internal successors, (70118), 12242 states have internal predecessors, (70118), 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) [2021-07-13 20:51:42,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12243 states to 12243 states and 70118 transitions. [2021-07-13 20:51:42,413 INFO L78 Accepts]: Start accepts. Automaton has 12243 states and 70118 transitions. Word has length 15 [2021-07-13 20:51:42,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:42,414 INFO L482 AbstractCegarLoop]: Abstraction has 12243 states and 70118 transitions. [2021-07-13 20:51:42,414 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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) [2021-07-13 20:51:42,414 INFO L276 IsEmpty]: Start isEmpty. Operand 12243 states and 70118 transitions. [2021-07-13 20:51:42,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-13 20:51:42,429 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:42,429 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:51:42,429 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-13 20:51:42,430 INFO L430 AbstractCegarLoop]: === Iteration 5 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:42,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:42,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1965293578, now seen corresponding path program 1 times [2021-07-13 20:51:42,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:42,430 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991500094] [2021-07-13 20:51:42,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:42,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:51:42,494 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:42,495 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991500094] [2021-07-13 20:51:42,495 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991500094] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:42,495 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:42,495 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 20:51:42,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750689618] [2021-07-13 20:51:42,495 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-13 20:51:42,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:42,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-13 20:51:42,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-07-13 20:51:42,496 INFO L87 Difference]: Start difference. First operand 12243 states and 70118 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 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) [2021-07-13 20:51:42,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:42,783 INFO L93 Difference]: Finished difference Result 20430 states and 118161 transitions. [2021-07-13 20:51:42,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-13 20:51:42,783 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 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 18 [2021-07-13 20:51:42,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:43,008 INFO L225 Difference]: With dead ends: 20430 [2021-07-13 20:51:43,008 INFO L226 Difference]: Without dead ends: 17793 [2021-07-13 20:51:43,009 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 25.8ms TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-07-13 20:51:43,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17793 states. [2021-07-13 20:51:43,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17793 to 12413. [2021-07-13 20:51:43,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12413 states, 12412 states have (on average 5.745085401224621) internal successors, (71308), 12412 states have internal predecessors, (71308), 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) [2021-07-13 20:51:43,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12413 states to 12413 states and 71308 transitions. [2021-07-13 20:51:43,538 INFO L78 Accepts]: Start accepts. Automaton has 12413 states and 71308 transitions. Word has length 18 [2021-07-13 20:51:43,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:43,538 INFO L482 AbstractCegarLoop]: Abstraction has 12413 states and 71308 transitions. [2021-07-13 20:51:43,538 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 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) [2021-07-13 20:51:43,538 INFO L276 IsEmpty]: Start isEmpty. Operand 12413 states and 71308 transitions. [2021-07-13 20:51:43,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-07-13 20:51:43,555 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:43,555 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:51:43,556 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-13 20:51:43,556 INFO L430 AbstractCegarLoop]: === Iteration 6 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:43,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:43,556 INFO L82 PathProgramCache]: Analyzing trace with hash -991679032, now seen corresponding path program 1 times [2021-07-13 20:51:43,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:43,556 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057327240] [2021-07-13 20:51:43,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:43,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:43,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:51:43,624 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:43,624 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057327240] [2021-07-13 20:51:43,624 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057327240] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:43,624 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:43,624 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-13 20:51:43,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970872720] [2021-07-13 20:51:43,625 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-13 20:51:43,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:43,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-13 20:51:43,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=37, Unknown=0, NotChecked=0, Total=72 [2021-07-13 20:51:43,625 INFO L87 Difference]: Start difference. First operand 12413 states and 71308 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 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) [2021-07-13 20:51:44,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:44,031 INFO L93 Difference]: Finished difference Result 19476 states and 112941 transitions. [2021-07-13 20:51:44,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-13 20:51:44,032 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 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 21 [2021-07-13 20:51:44,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:44,105 INFO L225 Difference]: With dead ends: 19476 [2021-07-13 20:51:44,105 INFO L226 Difference]: Without dead ends: 15094 [2021-07-13 20:51:44,105 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 31.1ms TimeCoverageRelationStatistics Valid=35, Invalid=37, Unknown=0, NotChecked=0, Total=72 [2021-07-13 20:51:44,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15094 states. [2021-07-13 20:51:44,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15094 to 10733. [2021-07-13 20:51:44,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10733 states, 10732 states have (on average 5.706205739843459) internal successors, (61239), 10732 states have internal predecessors, (61239), 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) [2021-07-13 20:51:44,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10733 states to 10733 states and 61239 transitions. [2021-07-13 20:51:44,580 INFO L78 Accepts]: Start accepts. Automaton has 10733 states and 61239 transitions. Word has length 21 [2021-07-13 20:51:44,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:44,580 INFO L482 AbstractCegarLoop]: Abstraction has 10733 states and 61239 transitions. [2021-07-13 20:51:44,580 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 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) [2021-07-13 20:51:44,581 INFO L276 IsEmpty]: Start isEmpty. Operand 10733 states and 61239 transitions. [2021-07-13 20:51:44,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-07-13 20:51:44,595 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:44,596 INFO L508 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, 1, 1] [2021-07-13 20:51:44,596 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-13 20:51:44,596 INFO L430 AbstractCegarLoop]: === Iteration 7 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:44,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:44,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1414486712, now seen corresponding path program 1 times [2021-07-13 20:51:44,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:44,596 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355023619] [2021-07-13 20:51:44,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:44,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:44,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:51:44,815 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:44,815 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355023619] [2021-07-13 20:51:44,815 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355023619] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:44,815 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:44,815 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-13 20:51:44,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538465500] [2021-07-13 20:51:44,816 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-13 20:51:44,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:44,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-13 20:51:44,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=46, Unknown=0, NotChecked=0, Total=90 [2021-07-13 20:51:44,816 INFO L87 Difference]: Start difference. First operand 10733 states and 61239 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 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) [2021-07-13 20:51:45,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:45,131 INFO L93 Difference]: Finished difference Result 15052 states and 86958 transitions. [2021-07-13 20:51:45,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-13 20:51:45,132 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 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 24 [2021-07-13 20:51:45,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:45,190 INFO L225 Difference]: With dead ends: 15052 [2021-07-13 20:51:45,190 INFO L226 Difference]: Without dead ends: 9504 [2021-07-13 20:51:45,192 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 42.7ms TimeCoverageRelationStatistics Valid=44, Invalid=46, Unknown=0, NotChecked=0, Total=90 [2021-07-13 20:51:45,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9504 states. [2021-07-13 20:51:45,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9504 to 7381. [2021-07-13 20:51:45,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7381 states, 7380 states have (on average 5.612059620596206) internal successors, (41417), 7380 states have internal predecessors, (41417), 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) [2021-07-13 20:51:45,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7381 states to 7381 states and 41417 transitions. [2021-07-13 20:51:45,599 INFO L78 Accepts]: Start accepts. Automaton has 7381 states and 41417 transitions. Word has length 24 [2021-07-13 20:51:45,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:45,599 INFO L482 AbstractCegarLoop]: Abstraction has 7381 states and 41417 transitions. [2021-07-13 20:51:45,599 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 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) [2021-07-13 20:51:45,600 INFO L276 IsEmpty]: Start isEmpty. Operand 7381 states and 41417 transitions. [2021-07-13 20:51:45,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-07-13 20:51:45,608 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:45,608 INFO L508 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, 1, 1, 1, 1, 1] [2021-07-13 20:51:45,608 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-13 20:51:45,608 INFO L430 AbstractCegarLoop]: === Iteration 8 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:45,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:45,608 INFO L82 PathProgramCache]: Analyzing trace with hash -59412474, now seen corresponding path program 1 times [2021-07-13 20:51:45,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:45,609 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590702817] [2021-07-13 20:51:45,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:45,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:45,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 20:51:45,701 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:45,701 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590702817] [2021-07-13 20:51:45,701 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590702817] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:45,701 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:45,701 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-13 20:51:45,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556306286] [2021-07-13 20:51:45,702 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-13 20:51:45,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:45,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-13 20:51:45,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=56, Unknown=0, NotChecked=0, Total=110 [2021-07-13 20:51:45,702 INFO L87 Difference]: Start difference. First operand 7381 states and 41417 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 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) [2021-07-13 20:51:45,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:45,855 INFO L93 Difference]: Finished difference Result 4951 states and 29186 transitions. [2021-07-13 20:51:45,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-13 20:51:45,856 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 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 27 [2021-07-13 20:51:45,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:45,856 INFO L225 Difference]: With dead ends: 4951 [2021-07-13 20:51:45,856 INFO L226 Difference]: Without dead ends: 0 [2021-07-13 20:51:45,856 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 54.3ms TimeCoverageRelationStatistics Valid=54, Invalid=56, Unknown=0, NotChecked=0, Total=110 [2021-07-13 20:51:45,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-13 20:51:45,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-13 20:51:45,857 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) [2021-07-13 20:51:45,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-13 20:51:45,857 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2021-07-13 20:51:45,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:45,857 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-13 20:51:45,857 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 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) [2021-07-13 20:51:45,857 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-13 20:51:45,857 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-13 20:51:45,857 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-13 20:51:45,857 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadWithAssertThread1of1ForFork1 was SAFE (2/2) [2021-07-13 20:51:45,857 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-13 20:51:45,867 INFO L202 PluginConnector]: Adding new model bluetooth-correct06.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 08:51:45 BasicIcfg [2021-07-13 20:51:45,867 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-13 20:51:45,868 INFO L168 Benchmark]: Toolchain (without parser) took 9113.31 ms. Allocated memory was 191.9 MB in the beginning and 5.7 GB in the end (delta: 5.5 GB). Free memory was 171.5 MB in the beginning and 5.2 GB in the end (delta: -5.0 GB). Peak memory consumption was 500.9 MB. Max. memory is 8.0 GB. [2021-07-13 20:51:45,868 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 191.9 MB. Free memory is still 172.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-13 20:51:45,868 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.08 ms. Allocated memory is still 191.9 MB. Free memory was 171.4 MB in the beginning and 169.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-13 20:51:45,869 INFO L168 Benchmark]: Boogie Preprocessor took 9.12 ms. Allocated memory is still 191.9 MB. Free memory was 169.6 MB in the beginning and 168.6 MB in the end (delta: 950.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-13 20:51:45,869 INFO L168 Benchmark]: RCFGBuilder took 205.27 ms. Allocated memory is still 191.9 MB. Free memory was 168.5 MB in the beginning and 153.5 MB in the end (delta: 15.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-07-13 20:51:45,869 INFO L168 Benchmark]: TraceAbstraction took 8872.55 ms. Allocated memory was 191.9 MB in the beginning and 5.7 GB in the end (delta: 5.5 GB). Free memory was 153.1 MB in the beginning and 5.2 GB in the end (delta: -5.1 GB). Peak memory consumption was 482.0 MB. Max. memory is 8.0 GB. [2021-07-13 20:51:45,870 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 0.11 ms. Allocated memory is still 191.9 MB. Free memory is still 172.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 23.08 ms. Allocated memory is still 191.9 MB. Free memory was 171.4 MB in the beginning and 169.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 9.12 ms. Allocated memory is still 191.9 MB. Free memory was 169.6 MB in the beginning and 168.6 MB in the end (delta: 950.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * RCFGBuilder took 205.27 ms. Allocated memory is still 191.9 MB. Free memory was 168.5 MB in the beginning and 153.5 MB in the end (delta: 15.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 8872.55 ms. Allocated memory was 191.9 MB in the beginning and 5.7 GB in the end (delta: 5.5 GB). Free memory was 153.1 MB in the beginning and 5.2 GB in the end (delta: -5.1 GB). Peak memory consumption was 482.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: 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 11 procedures, 60 locations, 9 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 277.9ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 49.5ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 225.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3641occurred 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 11 procedures, 60 locations, 9 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8512.6ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 166.8ms, AutomataDifference: 3370.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 624.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 406 SDtfs, 520 SDslu, 629 SDs, 0 SdLazy, 779 SolverSat, 343 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 490.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 210.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=14579occurred in iteration=0, InterpolantAutomatonStates: 51, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 3520.4ms AutomataMinimizationTime, 8 MinimizatonAttempts, 17163 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 10.8ms SsaConstructionTime, 52.8ms SatisfiabilityAnalysisTime, 654.0ms InterpolantComputationTime, 137 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 129 ConstructedInterpolants, 0 QuantifiedInterpolants, 570 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...