/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-correct03.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-13 20:51:32,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-13 20:51:32,429 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-13 20:51:32,461 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-13 20:51:32,514 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 20:51:32,543 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-13 20:51:32,543 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-13 20:51:32,543 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-13 20:51:32,544 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-13 20:51:32,545 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-13 20:51:32,545 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-13 20:51:32,546 INFO L138 SettingsManager]: * Use SBE=true [2021-07-13 20:51:32,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-13 20:51:32,546 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-13 20:51:32,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-13 20:51:32,547 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-13 20:51:32,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-13 20:51:32,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-13 20:51:32,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-13 20:51:32,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-13 20:51:32,547 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-13 20:51:32,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-13 20:51:32,548 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-13 20:51:32,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-13 20:51:32,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-13 20:51:32,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-13 20:51:32,548 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-13 20:51:32,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-13 20:51:32,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-13 20:51:32,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-13 20:51:32,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-13 20:51:32,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-13 20:51:32,549 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-13 20:51:32,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-13 20:51:32,549 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-13 20:51:32,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-13 20:51:32,549 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-13 20:51:32,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-13 20:51:32,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-13 20:51:32,816 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-13 20:51:32,817 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-13 20:51:32,818 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-13 20:51:32,818 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-correct03.bpl [2021-07-13 20:51:32,818 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-correct03.bpl' [2021-07-13 20:51:32,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-13 20:51:32,834 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-13 20:51:32,834 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-13 20:51:32,834 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-13 20:51:32,835 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-13 20:51:32,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:51:32" (1/1) ... [2021-07-13 20:51:32,846 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:51:32" (1/1) ... [2021-07-13 20:51:32,858 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-13 20:51:32,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-13 20:51:32,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-13 20:51:32,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-13 20:51:32,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:51:32" (1/1) ... [2021-07-13 20:51:32,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:51:32" (1/1) ... [2021-07-13 20:51:32,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:51:32" (1/1) ... [2021-07-13 20:51:32,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:51:32" (1/1) ... [2021-07-13 20:51:32,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:51:32" (1/1) ... [2021-07-13 20:51:32,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:51:32" (1/1) ... [2021-07-13 20:51:32,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:51:32" (1/1) ... [2021-07-13 20:51:32,870 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-13 20:51:32,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-13 20:51:32,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-13 20:51:32,871 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-13 20:51:32,872 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:51:32" (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 20:51:32,920 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThreadWithAssert given in one single declaration [2021-07-13 20:51:32,920 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThreadWithAssert [2021-07-13 20:51:32,920 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThreadWithAssert [2021-07-13 20:51:32,920 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-07-13 20:51:32,920 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-07-13 20:51:32,920 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-07-13 20:51:32,920 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-07-13 20:51:32,920 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-07-13 20:51:32,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-07-13 20:51:32,921 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-13 20:51:32,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-13 20:51:32,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-13 20:51:32,921 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 20:51:33,124 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-13 20:51:33,124 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-07-13 20:51:33,125 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadWithAssertEXIT is neither atomic block end nor error location. [2021-07-13 20:51:33,125 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-07-13 20:51:33,126 INFO L202 PluginConnector]: Adding new model bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:51:33 BoogieIcfgContainer [2021-07-13 20:51:33,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-13 20:51:33,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-13 20:51:33,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-13 20:51:33,129 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-13 20:51:33,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:51:32" (1/2) ... [2021-07-13 20:51:33,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f0f22a2 and model type bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:51:33, skipping insertion in model container [2021-07-13 20:51:33,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:51:33" (2/2) ... [2021-07-13 20:51:33,131 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth-correct03.bpl [2021-07-13 20:51:33,134 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-13 20:51:33,134 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-13 20:51:33,135 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-13 20:51:33,135 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-13 20:51:33,154 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-13 20:51:33,168 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-07-13 20:51:33,180 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 20:51:33,180 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 20:51:33,180 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 20:51:33,180 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 20:51:33,181 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 20:51:33,181 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 20:51:33,181 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 20:51:33,181 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-13 20:51:33,187 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 29 transitions, 78 flow [2021-07-13 20:51:33,228 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 131 states, 129 states have (on average 2.75968992248062) internal successors, (356), 130 states have internal predecessors, (356), 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 20:51:33,231 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 129 states have (on average 2.75968992248062) internal successors, (356), 130 states have internal predecessors, (356), 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 20:51:33,237 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-13 20:51:33,237 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/2) [2021-07-13 20:51:33,239 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-13 20:51:33,242 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 20:51:33,243 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 20:51:33,243 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 20:51:33,243 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 20:51:33,243 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 20:51:33,243 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 20:51:33,243 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 20:51:33,243 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadWithAssertThread1of1ForFork1======== [2021-07-13 20:51:33,244 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 29 transitions, 78 flow [2021-07-13 20:51:33,285 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 539 states, 538 states have (on average 4.148698884758364) internal successors, (2232), 538 states have internal predecessors, (2232), 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 20:51:33,286 INFO L276 IsEmpty]: Start isEmpty. Operand has 539 states, 538 states have (on average 4.148698884758364) internal successors, (2232), 538 states have internal predecessors, (2232), 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 20:51:33,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-07-13 20:51:33,289 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:33,289 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:51:33,289 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:33,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:33,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1868001698, now seen corresponding path program 1 times [2021-07-13 20:51:33,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:33,301 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388296363] [2021-07-13 20:51:33,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:33,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:33,392 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 20:51:33,392 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:33,393 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388296363] [2021-07-13 20:51:33,394 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388296363] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:33,394 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:33,394 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-13 20:51:33,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716340673] [2021-07-13 20:51:33,397 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-13 20:51:33,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:33,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-13 20:51:33,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 20:51:33,409 INFO L87 Difference]: Start difference. First operand has 539 states, 538 states have (on average 4.148698884758364) internal successors, (2232), 538 states have internal predecessors, (2232), 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 20:51:33,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:33,456 INFO L93 Difference]: Finished difference Result 583 states and 2358 transitions. [2021-07-13 20:51:33,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 20:51:33,459 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 20:51:33,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:33,480 INFO L225 Difference]: With dead ends: 583 [2021-07-13 20:51:33,480 INFO L226 Difference]: Without dead ends: 451 [2021-07-13 20:51:33,482 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 20:51:33,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-07-13 20:51:33,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 451. [2021-07-13 20:51:33,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 450 states have (on average 4.0088888888888885) internal successors, (1804), 450 states have internal predecessors, (1804), 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 20:51:33,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 1804 transitions. [2021-07-13 20:51:33,563 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 1804 transitions. Word has length 8 [2021-07-13 20:51:33,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:33,564 INFO L482 AbstractCegarLoop]: Abstraction has 451 states and 1804 transitions. [2021-07-13 20:51:33,564 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 20:51:33,564 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 1804 transitions. [2021-07-13 20:51:33,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-07-13 20:51:33,565 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:33,565 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:51:33,565 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-13 20:51:33,565 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:33,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:33,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1060968860, now seen corresponding path program 1 times [2021-07-13 20:51:33,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:33,566 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480772006] [2021-07-13 20:51:33,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:33,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:33,594 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 20:51:33,594 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:33,594 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480772006] [2021-07-13 20:51:33,594 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480772006] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:33,595 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:33,595 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-13 20:51:33,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551791839] [2021-07-13 20:51:33,596 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-13 20:51:33,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:33,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-13 20:51:33,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 20:51:33,599 INFO L87 Difference]: Start difference. First operand 451 states and 1804 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 20:51:33,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:33,615 INFO L93 Difference]: Finished difference Result 451 states and 1473 transitions. [2021-07-13 20:51:33,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 20:51:33,615 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 20:51:33,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:33,616 INFO L225 Difference]: With dead ends: 451 [2021-07-13 20:51:33,616 INFO L226 Difference]: Without dead ends: 226 [2021-07-13 20:51:33,617 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 20:51:33,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-07-13 20:51:33,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2021-07-13 20:51:33,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 3.008888888888889) internal successors, (677), 225 states have internal predecessors, (677), 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 20:51:33,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 677 transitions. [2021-07-13 20:51:33,623 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 677 transitions. Word has length 12 [2021-07-13 20:51:33,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:33,624 INFO L482 AbstractCegarLoop]: Abstraction has 226 states and 677 transitions. [2021-07-13 20:51:33,624 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 20:51:33,624 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 677 transitions. [2021-07-13 20:51:33,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-07-13 20:51:33,624 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:33,625 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:51:33,625 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-13 20:51:33,625 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:33,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:33,625 INFO L82 PathProgramCache]: Analyzing trace with hash -745768932, now seen corresponding path program 2 times [2021-07-13 20:51:33,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:33,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642655656] [2021-07-13 20:51:33,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:33,668 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 20:51:33,668 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:33,668 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642655656] [2021-07-13 20:51:33,668 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642655656] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:33,668 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:33,668 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-13 20:51:33,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71252799] [2021-07-13 20:51:33,669 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 20:51:33,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:33,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 20:51:33,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-07-13 20:51:33,669 INFO L87 Difference]: Start difference. First operand 226 states and 677 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 20:51:33,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:33,708 INFO L93 Difference]: Finished difference Result 391 states and 1229 transitions. [2021-07-13 20:51:33,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 20:51:33,708 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 20:51:33,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:33,710 INFO L225 Difference]: With dead ends: 391 [2021-07-13 20:51:33,710 INFO L226 Difference]: Without dead ends: 363 [2021-07-13 20:51:33,711 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 15.6ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-07-13 20:51:33,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2021-07-13 20:51:33,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 333. [2021-07-13 20:51:33,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 332 states have (on average 3.2319277108433737) internal successors, (1073), 332 states have internal predecessors, (1073), 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 20:51:33,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 1073 transitions. [2021-07-13 20:51:33,719 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 1073 transitions. Word has length 12 [2021-07-13 20:51:33,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:33,719 INFO L482 AbstractCegarLoop]: Abstraction has 333 states and 1073 transitions. [2021-07-13 20:51:33,719 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 20:51:33,719 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 1073 transitions. [2021-07-13 20:51:33,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-07-13 20:51:33,721 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:33,721 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:51:33,721 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-13 20:51:33,721 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:33,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:33,722 INFO L82 PathProgramCache]: Analyzing trace with hash -292397881, now seen corresponding path program 1 times [2021-07-13 20:51:33,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:33,722 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688080733] [2021-07-13 20:51:33,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:33,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:33,769 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 20:51:33,769 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:33,770 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688080733] [2021-07-13 20:51:33,770 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688080733] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:33,770 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:33,770 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 20:51:33,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392615929] [2021-07-13 20:51:33,770 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-13 20:51:33,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:33,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-13 20:51:33,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-07-13 20:51:33,771 INFO L87 Difference]: Start difference. First operand 333 states and 1073 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 20:51:33,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:33,820 INFO L93 Difference]: Finished difference Result 474 states and 1544 transitions. [2021-07-13 20:51:33,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-13 20:51:33,821 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 20:51:33,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:33,823 INFO L225 Difference]: With dead ends: 474 [2021-07-13 20:51:33,823 INFO L226 Difference]: Without dead ends: 344 [2021-07-13 20:51:33,823 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 22.7ms TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-07-13 20:51:33,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-07-13 20:51:33,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 277. [2021-07-13 20:51:33,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 3.213768115942029) internal successors, (887), 276 states have internal predecessors, (887), 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 20:51:33,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 887 transitions. [2021-07-13 20:51:33,831 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 887 transitions. Word has length 15 [2021-07-13 20:51:33,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:33,831 INFO L482 AbstractCegarLoop]: Abstraction has 277 states and 887 transitions. [2021-07-13 20:51:33,832 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 20:51:33,832 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 887 transitions. [2021-07-13 20:51:33,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-13 20:51:33,832 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:33,833 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 20:51:33,833 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-13 20:51:33,833 INFO L430 AbstractCegarLoop]: === Iteration 5 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:33,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:33,833 INFO L82 PathProgramCache]: Analyzing trace with hash 647772506, now seen corresponding path program 1 times [2021-07-13 20:51:33,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:33,834 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143029380] [2021-07-13 20:51:33,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:33,888 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 20:51:33,889 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:33,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143029380] [2021-07-13 20:51:33,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143029380] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:33,889 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:33,889 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 20:51:33,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254213667] [2021-07-13 20:51:33,890 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-13 20:51:33,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:33,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-13 20:51:33,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-07-13 20:51:33,890 INFO L87 Difference]: Start difference. First operand 277 states and 887 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 20:51:33,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:33,947 INFO L93 Difference]: Finished difference Result 187 states and 614 transitions. [2021-07-13 20:51:33,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-13 20:51:33,947 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 20:51:33,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:33,948 INFO L225 Difference]: With dead ends: 187 [2021-07-13 20:51:33,948 INFO L226 Difference]: Without dead ends: 0 [2021-07-13 20:51:33,948 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 27.7ms TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-07-13 20:51:33,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-13 20:51:33,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-13 20:51:33,949 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 20:51:33,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-13 20:51:33,949 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-07-13 20:51:33,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:33,950 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-13 20:51:33,950 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 20:51:33,951 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-13 20:51:33,951 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-13 20:51:33,951 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-13 20:51:33,951 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadWithAssertThread1of1ForFork1 was SAFE (2/2) [2021-07-13 20:51:33,951 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-13 20:51:33,953 INFO L202 PluginConnector]: Adding new model bluetooth-correct03.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 08:51:33 BasicIcfg [2021-07-13 20:51:33,953 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-13 20:51:33,954 INFO L168 Benchmark]: Toolchain (without parser) took 1120.06 ms. Allocated memory is still 164.6 MB. Free memory was 143.4 MB in the beginning and 136.5 MB in the end (delta: 6.9 MB). Peak memory consumption was 8.0 MB. Max. memory is 8.0 GB. [2021-07-13 20:51:33,954 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 164.6 MB. Free memory is still 144.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-13 20:51:33,955 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.92 ms. Allocated memory is still 164.6 MB. Free memory was 143.3 MB in the beginning and 141.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-13 20:51:33,956 INFO L168 Benchmark]: Boogie Preprocessor took 11.06 ms. Allocated memory is still 164.6 MB. Free memory was 141.5 MB in the beginning and 140.6 MB in the end (delta: 869.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-13 20:51:33,959 INFO L168 Benchmark]: RCFGBuilder took 256.00 ms. Allocated memory is still 164.6 MB. Free memory was 140.5 MB in the beginning and 125.6 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-07-13 20:51:33,959 INFO L168 Benchmark]: TraceAbstraction took 825.94 ms. Allocated memory is still 164.6 MB. Free memory was 125.1 MB in the beginning and 136.5 MB in the end (delta: -11.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-13 20:51:33,961 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 164.6 MB. Free memory is still 144.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 23.92 ms. Allocated memory is still 164.6 MB. Free memory was 143.3 MB in the beginning and 141.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 11.06 ms. Allocated memory is still 164.6 MB. Free memory was 141.5 MB in the beginning and 140.6 MB in the end (delta: 869.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 256.00 ms. Allocated memory is still 164.6 MB. Free memory was 140.5 MB in the beginning and 125.6 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 825.94 ms. Allocated memory is still 164.6 MB. Free memory was 125.1 MB in the beginning and 136.5 MB in the end (delta: -11.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 36]: 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 8 procedures, 45 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 58.5ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 8.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 47.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=131occurred 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 8 procedures, 45 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 708.4ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 7.4ms, AutomataDifference: 256.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 42.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 128 SDtfs, 109 SDslu, 154 SDs, 0 SdLazy, 140 SolverSat, 49 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 119.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 80.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=539occurred in iteration=0, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 96.1ms AutomataMinimizationTime, 5 MinimizatonAttempts, 97 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 16.7ms SsaConstructionTime, 26.9ms SatisfiabilityAnalysisTime, 171.8ms InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 216 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...