/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/bluetooth06.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d310483fe8b4879eee5de19363f50e4b839cc4ec-d310483 [2021-06-24 17:53:21,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-24 17:53:21,297 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-24 17:53:21,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-24 17:53:21,384 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 [2021-06-24 17:53:21,427 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-24 17:53:21,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-24 17:53:21,428 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-24 17:53:21,428 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-24 17:53:21,430 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-24 17:53:21,430 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-24 17:53:21,430 INFO L138 SettingsManager]: * Use SBE=true [2021-06-24 17:53:21,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-24 17:53:21,430 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-24 17:53:21,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-24 17:53:21,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-24 17:53:21,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-24 17:53:21,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-24 17:53:21,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-24 17:53:21,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-24 17:53:21,432 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-24 17:53:21,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-24 17:53:21,432 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-24 17:53:21,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-24 17:53:21,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-24 17:53:21,432 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-24 17:53:21,432 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-24 17:53:21,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-24 17:53:21,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 17:53:21,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-24 17:53:21,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-24 17:53:21,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-24 17:53:21,433 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-24 17:53:21,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-24 17:53:21,433 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-24 17:53:21,433 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-24 17:53:21,433 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-24 17:53:21,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-24 17:53:21,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-24 17:53:21,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-24 17:53:21,818 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-24 17:53:21,819 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-24 17:53:21,819 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth06.bpl [2021-06-24 17:53:21,819 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth06.bpl' [2021-06-24 17:53:21,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-24 17:53:21,875 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-24 17:53:21,876 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-24 17:53:21,876 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-24 17:53:21,876 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-24 17:53:21,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 05:53:21" (1/1) ... [2021-06-24 17:53:21,893 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 05:53:21" (1/1) ... [2021-06-24 17:53:21,903 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-24 17:53:21,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-24 17:53:21,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-24 17:53:21,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-24 17:53:21,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 05:53:21" (1/1) ... [2021-06-24 17:53:21,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 05:53:21" (1/1) ... [2021-06-24 17:53:21,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 05:53:21" (1/1) ... [2021-06-24 17:53:21,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 05:53:21" (1/1) ... [2021-06-24 17:53:21,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 05:53:21" (1/1) ... [2021-06-24 17:53:21,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 05:53:21" (1/1) ... [2021-06-24 17:53:21,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 05:53:21" (1/1) ... [2021-06-24 17:53:21,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-24 17:53:21,917 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-24 17:53:21,917 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-24 17:53:21,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-24 17:53:21,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 05:53:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 17:53:22,020 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-06-24 17:53:22,021 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-06-24 17:53:22,022 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-06-24 17:53:22,022 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-06-24 17:53:22,022 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-06-24 17:53:22,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-06-24 17:53:22,022 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-24 17:53:22,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-24 17:53:22,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-24 17:53:22,023 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-24 17:53:22,281 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-24 17:53:22,281 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-06-24 17:53:22,282 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-06-24 17:53:22,283 INFO L202 PluginConnector]: Adding new model bluetooth06.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 05:53:22 BoogieIcfgContainer [2021-06-24 17:53:22,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-24 17:53:22,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-24 17:53:22,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-24 17:53:22,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-24 17:53:22,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 05:53:21" (1/2) ... [2021-06-24 17:53:22,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33e633d5 and model type bluetooth06.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 05:53:22, skipping insertion in model container [2021-06-24 17:53:22,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth06.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 05:53:22" (2/2) ... [2021-06-24 17:53:22,288 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth06.bpl [2021-06-24 17:53:22,291 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-24 17:53:22,292 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-24 17:53:22,292 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-24 17:53:22,308 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-24 17:53:22,366 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-24 17:53:22,398 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-24 17:53:22,427 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 17:53:22,428 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 17:53:22,428 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 17:53:22,428 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 17:53:22,428 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 17:53:22,428 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 17:53:22,428 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 17:53:22,428 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork6======== [2021-06-24 17:53:22,445 INFO L112 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 70 places, 54 transitions, 143 flow [2021-06-24 17:59:53,818 INFO L134 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 210941 states, 173409 states have (on average 7.233194355540946) internal successors, (1254301), 173440 states have internal predecessors, (1254301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 17:59:54,250 INFO L276 IsEmpty]: Start isEmpty. Operand has 210941 states, 173409 states have (on average 7.233194355540946) internal successors, (1254301), 173440 states have internal predecessors, (1254301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 17:59:54,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-06-24 17:59:54,273 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 17:59:54,274 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 17:59:54,274 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 17:59:54,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 17:59:54,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1682967909, now seen corresponding path program 1 times [2021-06-24 17:59:54,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 17:59:54,287 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840697304] [2021-06-24 17:59:54,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 17:59:54,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 17:59:54,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 17:59:54,388 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 17:59:54,389 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840697304] [2021-06-24 17:59:54,389 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840697304] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 17:59:54,389 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 17:59:54,389 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-24 17:59:54,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402334604] [2021-06-24 17:59:54,392 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 17:59:54,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 17:59:54,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 17:59:54,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 17:59:55,125 INFO L87 Difference]: Start difference. First operand has 210941 states, 173409 states have (on average 7.233194355540946) internal successors, (1254301), 173440 states have internal predecessors, (1254301), 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 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 17:59:58,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 17:59:58,377 INFO L93 Difference]: Finished difference Result 145649 states and 948445 transitions. [2021-06-24 17:59:58,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 17:59:58,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-06-24 17:59:58,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 18:00:00,131 INFO L225 Difference]: With dead ends: 145649 [2021-06-24 18:00:00,131 INFO L226 Difference]: Without dead ends: 100349 [2021-06-24 18:00:00,132 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 18:00:04,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100349 states. [2021-06-24 18:00:09,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100349 to 100225. [2021-06-24 18:00:09,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100225 states, 100193 states have (on average 6.233080155300271) internal successors, (624511), 100224 states have internal predecessors, (624511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:00:11,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100225 states to 100225 states and 624511 transitions. [2021-06-24 18:00:11,165 INFO L78 Accepts]: Start accepts. Automaton has 100225 states and 624511 transitions. Word has length 13 [2021-06-24 18:00:11,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 18:00:11,165 INFO L482 AbstractCegarLoop]: Abstraction has 100225 states and 624511 transitions. [2021-06-24 18:00:11,166 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:00:11,166 INFO L276 IsEmpty]: Start isEmpty. Operand 100225 states and 624511 transitions. [2021-06-24 18:00:11,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-24 18:00:11,199 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:00:11,199 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:00:11,199 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-24 18:00:11,199 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:00:11,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:00:11,200 INFO L82 PathProgramCache]: Analyzing trace with hash 2012015079, now seen corresponding path program 1 times [2021-06-24 18:00:11,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:00:11,200 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972377331] [2021-06-24 18:00:11,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:00:11,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 18:00:11,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 18:00:11,244 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 18:00:11,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972377331] [2021-06-24 18:00:11,244 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972377331] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 18:00:11,244 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 18:00:11,244 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 18:00:11,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808858369] [2021-06-24 18:00:11,246 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 18:00:11,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 18:00:11,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 18:00:11,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 18:00:11,247 INFO L87 Difference]: Start difference. First operand 100225 states and 624511 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:00:13,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 18:00:13,101 INFO L93 Difference]: Finished difference Result 100101 states and 507682 transitions. [2021-06-24 18:00:13,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 18:00:13,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-24 18:00:13,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 18:00:13,622 INFO L225 Difference]: With dead ends: 100101 [2021-06-24 18:00:13,622 INFO L226 Difference]: Without dead ends: 50906 [2021-06-24 18:00:13,628 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 18:00:15,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50906 states. [2021-06-24 18:00:16,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50906 to 46938. [2021-06-24 18:00:16,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46938 states, 46906 states have (on average 5.163561164882958) internal successors, (242202), 46937 states have internal predecessors, (242202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:00:17,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46938 states to 46938 states and 242202 transitions. [2021-06-24 18:00:17,676 INFO L78 Accepts]: Start accepts. Automaton has 46938 states and 242202 transitions. Word has length 17 [2021-06-24 18:00:17,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 18:00:17,676 INFO L482 AbstractCegarLoop]: Abstraction has 46938 states and 242202 transitions. [2021-06-24 18:00:17,677 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:00:17,677 INFO L276 IsEmpty]: Start isEmpty. Operand 46938 states and 242202 transitions. [2021-06-24 18:00:17,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-24 18:00:17,702 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:00:17,702 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:00:17,703 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-24 18:00:17,703 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:00:17,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:00:17,703 INFO L82 PathProgramCache]: Analyzing trace with hash 2060176035, now seen corresponding path program 2 times [2021-06-24 18:00:17,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:00:17,704 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116969248] [2021-06-24 18:00:17,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:00:17,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 18:00:17,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 18:00:17,768 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 18:00:17,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116969248] [2021-06-24 18:00:17,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116969248] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 18:00:17,769 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 18:00:17,769 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-24 18:00:17,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536147522] [2021-06-24 18:00:17,769 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-24 18:00:17,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 18:00:17,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-24 18:00:17,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-24 18:00:17,770 INFO L87 Difference]: Start difference. First operand 46938 states and 242202 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:00:18,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 18:00:18,773 INFO L93 Difference]: Finished difference Result 67714 states and 369474 transitions. [2021-06-24 18:00:18,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 18:00:18,774 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-24 18:00:18,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 18:00:19,271 INFO L225 Difference]: With dead ends: 67714 [2021-06-24 18:00:19,272 INFO L226 Difference]: Without dead ends: 67579 [2021-06-24 18:00:19,273 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 21.7ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-24 18:00:21,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67579 states. [2021-06-24 18:00:22,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67579 to 64751. [2021-06-24 18:00:23,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64751 states, 64719 states have (on average 5.474327477247794) internal successors, (354293), 64750 states have internal predecessors, (354293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:00:23,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64751 states to 64751 states and 354293 transitions. [2021-06-24 18:00:23,998 INFO L78 Accepts]: Start accepts. Automaton has 64751 states and 354293 transitions. Word has length 17 [2021-06-24 18:00:23,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 18:00:23,999 INFO L482 AbstractCegarLoop]: Abstraction has 64751 states and 354293 transitions. [2021-06-24 18:00:23,999 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:00:24,000 INFO L276 IsEmpty]: Start isEmpty. Operand 64751 states and 354293 transitions. [2021-06-24 18:00:24,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-24 18:00:24,060 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:00:24,060 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:00:24,061 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-24 18:00:24,061 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:00:24,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:00:24,061 INFO L82 PathProgramCache]: Analyzing trace with hash -671102262, now seen corresponding path program 1 times [2021-06-24 18:00:24,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:00:24,061 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361683161] [2021-06-24 18:00:24,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:00:24,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 18:00:24,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 18:00:24,108 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 18:00:24,108 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361683161] [2021-06-24 18:00:24,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361683161] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 18:00:24,108 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 18:00:24,109 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-24 18:00:24,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353413238] [2021-06-24 18:00:24,109 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-24 18:00:24,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 18:00:24,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-24 18:00:24,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-06-24 18:00:24,110 INFO L87 Difference]: Start difference. First operand 64751 states and 354293 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:00:25,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 18:00:25,292 INFO L93 Difference]: Finished difference Result 94559 states and 534933 transitions. [2021-06-24 18:00:25,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 18:00:25,293 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 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 20 [2021-06-24 18:00:25,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 18:00:26,095 INFO L225 Difference]: With dead ends: 94559 [2021-06-24 18:00:26,095 INFO L226 Difference]: Without dead ends: 92882 [2021-06-24 18:00:26,096 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 19.3ms TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-06-24 18:00:28,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92882 states. [2021-06-24 18:00:30,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92882 to 73677. [2021-06-24 18:00:31,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73677 states, 73645 states have (on average 5.539289836377215) internal successors, (407941), 73676 states have internal predecessors, (407941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:00:32,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73677 states to 73677 states and 407941 transitions. [2021-06-24 18:00:32,086 INFO L78 Accepts]: Start accepts. Automaton has 73677 states and 407941 transitions. Word has length 20 [2021-06-24 18:00:32,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 18:00:32,087 INFO L482 AbstractCegarLoop]: Abstraction has 73677 states and 407941 transitions. [2021-06-24 18:00:32,087 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:00:32,087 INFO L276 IsEmpty]: Start isEmpty. Operand 73677 states and 407941 transitions. [2021-06-24 18:00:32,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-06-24 18:00:32,169 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:00:32,170 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:00:32,170 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-24 18:00:32,170 INFO L430 AbstractCegarLoop]: === Iteration 5 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:00:32,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:00:32,171 INFO L82 PathProgramCache]: Analyzing trace with hash -862829522, now seen corresponding path program 1 times [2021-06-24 18:00:32,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:00:32,171 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193283889] [2021-06-24 18:00:32,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:00:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 18:00:32,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 18:00:32,241 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 18:00:32,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193283889] [2021-06-24 18:00:32,241 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193283889] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 18:00:32,241 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 18:00:32,241 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-24 18:00:32,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826924912] [2021-06-24 18:00:32,243 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-24 18:00:32,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 18:00:32,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-24 18:00:32,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-06-24 18:00:32,246 INFO L87 Difference]: Start difference. First operand 73677 states and 407941 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:00:34,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 18:00:34,346 INFO L93 Difference]: Finished difference Result 107117 states and 609413 transitions. [2021-06-24 18:00:34,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-24 18:00:34,346 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 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 23 [2021-06-24 18:00:34,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 18:00:35,620 INFO L225 Difference]: With dead ends: 107117 [2021-06-24 18:00:35,621 INFO L226 Difference]: Without dead ends: 101212 [2021-06-24 18:00:35,622 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 30.8ms TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-06-24 18:00:37,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101212 states. [2021-06-24 18:00:40,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101212 to 76346. [2021-06-24 18:00:40,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76346 states, 76314 states have (on average 5.547854915218702) internal successors, (423379), 76345 states have internal predecessors, (423379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:00:40,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76346 states to 76346 states and 423379 transitions. [2021-06-24 18:00:40,687 INFO L78 Accepts]: Start accepts. Automaton has 76346 states and 423379 transitions. Word has length 23 [2021-06-24 18:00:40,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 18:00:40,687 INFO L482 AbstractCegarLoop]: Abstraction has 76346 states and 423379 transitions. [2021-06-24 18:00:40,687 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:00:40,687 INFO L276 IsEmpty]: Start isEmpty. Operand 76346 states and 423379 transitions. [2021-06-24 18:00:41,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-24 18:00:41,394 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:00:41,394 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:00:41,394 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-24 18:00:41,394 INFO L430 AbstractCegarLoop]: === Iteration 6 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:00:41,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:00:41,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1768963291, now seen corresponding path program 1 times [2021-06-24 18:00:41,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:00:41,395 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108739190] [2021-06-24 18:00:41,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:00:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 18:00:41,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 18:00:41,473 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 18:00:41,473 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108739190] [2021-06-24 18:00:41,473 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108739190] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 18:00:41,473 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 18:00:41,473 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-24 18:00:41,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408378085] [2021-06-24 18:00:41,474 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-24 18:00:41,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 18:00:41,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-24 18:00:41,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=37, Unknown=0, NotChecked=0, Total=72 [2021-06-24 18:00:41,474 INFO L87 Difference]: Start difference. First operand 76346 states and 423379 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:00:42,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 18:00:42,897 INFO L93 Difference]: Finished difference Result 106106 states and 602291 transitions. [2021-06-24 18:00:42,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-24 18:00:42,897 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 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 26 [2021-06-24 18:00:42,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 18:00:44,041 INFO L225 Difference]: With dead ends: 106106 [2021-06-24 18:00:44,042 INFO L226 Difference]: Without dead ends: 92639 [2021-06-24 18:00:44,042 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 36.4ms TimeCoverageRelationStatistics Valid=35, Invalid=37, Unknown=0, NotChecked=0, Total=72 [2021-06-24 18:00:45,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92639 states. [2021-06-24 18:00:47,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92639 to 70232. [2021-06-24 18:00:47,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70232 states, 70200 states have (on average 5.486609686609687) internal successors, (385160), 70231 states have internal predecessors, (385160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:00:49,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70232 states to 70232 states and 385160 transitions. [2021-06-24 18:00:49,090 INFO L78 Accepts]: Start accepts. Automaton has 70232 states and 385160 transitions. Word has length 26 [2021-06-24 18:00:49,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 18:00:49,105 INFO L482 AbstractCegarLoop]: Abstraction has 70232 states and 385160 transitions. [2021-06-24 18:00:49,108 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:00:49,108 INFO L276 IsEmpty]: Start isEmpty. Operand 70232 states and 385160 transitions. [2021-06-24 18:00:49,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-06-24 18:00:49,265 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:00:49,265 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:00:49,270 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-24 18:00:49,270 INFO L430 AbstractCegarLoop]: === Iteration 7 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:00:49,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:00:49,276 INFO L82 PathProgramCache]: Analyzing trace with hash -205997901, now seen corresponding path program 1 times [2021-06-24 18:00:49,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:00:49,285 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923945644] [2021-06-24 18:00:49,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:00:49,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 18:00:49,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 18:00:49,530 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 18:00:49,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923945644] [2021-06-24 18:00:49,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923945644] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 18:00:49,530 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 18:00:49,530 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-24 18:00:49,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533247507] [2021-06-24 18:00:49,531 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-24 18:00:49,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 18:00:49,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-24 18:00:49,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=46, Unknown=0, NotChecked=0, Total=90 [2021-06-24 18:00:49,531 INFO L87 Difference]: Start difference. First operand 70232 states and 385160 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:00:50,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 18:00:50,866 INFO L93 Difference]: Finished difference Result 90328 states and 505768 transitions. [2021-06-24 18:00:50,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-24 18:00:50,866 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 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 29 [2021-06-24 18:00:50,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 18:00:51,790 INFO L225 Difference]: With dead ends: 90328 [2021-06-24 18:00:51,790 INFO L226 Difference]: Without dead ends: 69026 [2021-06-24 18:00:51,793 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 95.4ms TimeCoverageRelationStatistics Valid=44, Invalid=46, Unknown=0, NotChecked=0, Total=90 [2021-06-24 18:00:53,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69026 states. [2021-06-24 18:00:55,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69026 to 57311. [2021-06-24 18:00:55,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57311 states, 57279 states have (on average 5.336737722376438) internal successors, (305683), 57310 states have internal predecessors, (305683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:00:55,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57311 states to 57311 states and 305683 transitions. [2021-06-24 18:00:55,483 INFO L78 Accepts]: Start accepts. Automaton has 57311 states and 305683 transitions. Word has length 29 [2021-06-24 18:00:55,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 18:00:55,484 INFO L482 AbstractCegarLoop]: Abstraction has 57311 states and 305683 transitions. [2021-06-24 18:00:55,484 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:00:55,484 INFO L276 IsEmpty]: Start isEmpty. Operand 57311 states and 305683 transitions. [2021-06-24 18:00:55,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-06-24 18:00:55,526 INFO L496 BasicCegarLoop]: Found error trace [2021-06-24 18:00:55,526 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-24 18:00:55,526 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-24 18:00:55,526 INFO L430 AbstractCegarLoop]: === Iteration 8 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 18:00:55,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 18:00:55,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1355477786, now seen corresponding path program 1 times [2021-06-24 18:00:55,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 18:00:55,529 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277624950] [2021-06-24 18:00:55,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 18:00:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 18:00:55,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 18:00:55,663 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 18:00:55,663 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277624950] [2021-06-24 18:00:55,663 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277624950] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 18:00:55,663 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 18:00:55,663 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-06-24 18:00:55,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136655291] [2021-06-24 18:00:55,663 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-24 18:00:55,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 18:00:55,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-24 18:00:55,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=56, Unknown=0, NotChecked=0, Total=110 [2021-06-24 18:00:55,664 INFO L87 Difference]: Start difference. First operand 57311 states and 305683 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:00:56,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-24 18:00:56,344 INFO L93 Difference]: Finished difference Result 21983 states and 132663 transitions. [2021-06-24 18:00:56,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-24 18:00:56,345 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 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 32 [2021-06-24 18:00:56,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-24 18:00:56,345 INFO L225 Difference]: With dead ends: 21983 [2021-06-24 18:00:56,346 INFO L226 Difference]: Without dead ends: 0 [2021-06-24 18:00:56,346 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 53.4ms TimeCoverageRelationStatistics Valid=54, Invalid=56, Unknown=0, NotChecked=0, Total=110 [2021-06-24 18:00:56,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-24 18:00:56,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-24 18:00:56,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:00:56,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-24 18:00:56,346 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2021-06-24 18:00:56,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-24 18:00:56,346 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-24 18:00:56,347 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:00:56,347 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-24 18:00:56,347 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-24 18:00:56,347 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-24 18:00:56,347 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadThread1of1ForFork6 was SAFE (1/7) [2021-06-24 18:00:56,349 INFO L255 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-06-24 18:00:56,349 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 18:00:56,349 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 18:00:56,349 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 18:00:56,349 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 18:00:56,349 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 18:00:56,349 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 18:00:56,349 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 18:00:56,349 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-24 18:00:56,351 INFO L112 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 70 places, 54 transitions, 143 flow [2021-06-24 18:06:00,566 INFO L134 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 210941 states, 23409 states have (on average 5.790550642915118) internal successors, (135551), 23440 states have internal predecessors, (135551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:06:00,596 INFO L276 IsEmpty]: Start isEmpty. Operand has 210941 states, 23409 states have (on average 5.790550642915118) internal successors, (135551), 23440 states have internal predecessors, (135551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 18:06:00,679 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-24 18:06:00,679 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (2/7) [2021-06-24 18:06:00,680 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-24 18:06:00,695 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 18:06:00,695 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 18:06:00,695 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 18:06:00,695 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 18:06:00,695 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 18:06:00,695 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 18:06:00,695 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 18:06:00,695 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork4======== [2021-06-24 18:06:00,696 INFO L112 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 70 places, 54 transitions, 143 flow Received shutdown request... [2021-06-24 18:07:33,539 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-24 18:07:33,539 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadThread1of1ForFork4 was TIMEOUT (3/7) [2021-06-24 18:07:33,540 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-24 18:07:33,543 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 18:07:33,543 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 18:07:33,543 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 18:07:33,543 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 18:07:33,543 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 18:07:33,543 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 18:07:33,543 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 18:07:33,543 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork5======== [2021-06-24 18:07:33,549 INFO L112 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 70 places, 54 transitions, 143 flow [2021-06-24 18:07:33,549 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-24 18:07:33,549 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadThread1of1ForFork5 was TIMEOUT (4/7) [2021-06-24 18:07:33,549 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-24 18:07:33,550 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 18:07:33,550 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 18:07:33,550 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 18:07:33,550 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 18:07:33,550 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 18:07:33,550 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 18:07:33,550 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 18:07:33,550 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork2======== [2021-06-24 18:07:33,552 INFO L112 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 70 places, 54 transitions, 143 flow [2021-06-24 18:07:33,552 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-24 18:07:33,552 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadThread1of1ForFork2 was TIMEOUT (5/7) [2021-06-24 18:07:33,553 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-24 18:07:33,554 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 18:07:33,554 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 18:07:33,554 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 18:07:33,554 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 18:07:33,554 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 18:07:33,554 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 18:07:33,554 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 18:07:33,554 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork3======== [2021-06-24 18:07:33,555 INFO L112 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 70 places, 54 transitions, 143 flow [2021-06-24 18:07:33,555 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-24 18:07:33,556 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadThread1of1ForFork3 was TIMEOUT (6/7) [2021-06-24 18:07:33,559 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-24 18:07:33,571 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 18:07:33,571 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 18:07:33,571 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 18:07:33,571 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 18:07:33,571 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 18:07:33,571 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 18:07:33,571 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 18:07:33,571 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork1======== [2021-06-24 18:07:33,572 INFO L112 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 70 places, 54 transitions, 143 flow [2021-06-24 18:07:33,572 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-24 18:07:33,572 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadThread1of1ForFork1 was TIMEOUT (7/7) [2021-06-24 18:07:33,572 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-24 18:07:33,592 WARN L196 ceAbstractionStarter]: Timeout [2021-06-24 18:07:33,592 INFO L202 PluginConnector]: Adding new model bluetooth06.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 06:07:33 BasicIcfg [2021-06-24 18:07:33,592 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-24 18:07:33,592 INFO L168 Benchmark]: Toolchain (without parser) took 851739.81 ms. Allocated memory was 192.9 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 173.4 MB in the beginning and 7.0 GB in the end (delta: -6.9 GB). Peak memory consumption was 932.2 MB. Max. memory is 8.0 GB. [2021-06-24 18:07:33,593 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 192.9 MB. Free memory is still 174.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-24 18:07:33,593 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.90 ms. Allocated memory is still 192.9 MB. Free memory was 173.2 MB in the beginning and 171.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-24 18:07:33,594 INFO L168 Benchmark]: Boogie Preprocessor took 12.04 ms. Allocated memory is still 192.9 MB. Free memory was 171.5 MB in the beginning and 170.5 MB in the end (delta: 940.8 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-24 18:07:33,595 INFO L168 Benchmark]: RCFGBuilder took 366.75 ms. Allocated memory is still 192.9 MB. Free memory was 170.5 MB in the beginning and 157.8 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-06-24 18:07:33,596 INFO L168 Benchmark]: TraceAbstraction took 851307.60 ms. Allocated memory was 192.9 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 157.3 MB in the beginning and 7.0 GB in the end (delta: -6.9 GB). Peak memory consumption was 914.4 MB. Max. memory is 8.0 GB. [2021-06-24 18:07:33,601 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 192.9 MB. Free memory is still 174.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 26.90 ms. Allocated memory is still 192.9 MB. Free memory was 173.2 MB in the beginning and 171.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 12.04 ms. Allocated memory is still 192.9 MB. Free memory was 171.5 MB in the beginning and 170.5 MB in the end (delta: 940.8 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 366.75 ms. Allocated memory is still 192.9 MB. Free memory was 170.5 MB in the beginning and 157.8 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 851307.60 ms. Allocated memory was 192.9 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 157.3 MB in the beginning and 7.0 GB in the end (delta: -6.9 GB). Peak memory consumption was 914.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 37]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing initial abstraction,while PetriNet2FiniteAutomaton was constructing automaton for Petri net that has has 70 places, 54 transitions, 143 flow. Already constructed 141707 states. Currently 31082 states in worklist.. - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: DeviceThreadThread1of1ForFork6 with 1 thread instances CFG has 10 procedures, 67 locations, 14 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 453921.6ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 1562.3ms, AutomataDifference: 20497.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 391390.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 556 SDtfs, 870 SDslu, 957 SDs, 0 SdLazy, 822 SolverSat, 413 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1268.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 271.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=210941occurred 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: 39588.7ms AutomataMinimizationTime, 8 MinimizatonAttempts, 85113 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.5ms SsaConstructionTime, 106.7ms SatisfiabilityAnalysisTime, 594.0ms InterpolantComputationTime, 177 NumberOfCodeBlocks, 177 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 169 ConstructedInterpolants, 0 QuantifiedInterpolants, 765 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 - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 10 procedures, 67 locations, 14 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 304330.0ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 112.7ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 304216.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=210941occurred 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: DeviceThreadThread1of1ForFork4 with 1 thread instances CFG has 10 procedures, 67 locations, 14 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 92857.5ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 92844.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, 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: DeviceThreadThread1of1ForFork5 with 1 thread instances CFG has 10 procedures, 67 locations, 14 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 6.1ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: DeviceThreadThread1of1ForFork2 with 1 thread instances CFG has 10 procedures, 67 locations, 14 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 2.7ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, 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: DeviceThreadThread1of1ForFork3 with 1 thread instances CFG has 10 procedures, 67 locations, 14 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 1.8ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, 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: DeviceThreadThread1of1ForFork1 with 1 thread instances CFG has 10 procedures, 67 locations, 14 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 1.2ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown