/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-correct07.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-13 20:51:42,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-13 20:51:42,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-13 20:51:42,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-13 20:51:42,542 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 20:51:42,567 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-13 20:51:42,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-13 20:51:42,568 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-13 20:51:42,568 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-13 20:51:42,569 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-13 20:51:42,570 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-13 20:51:42,570 INFO L138 SettingsManager]: * Use SBE=true [2021-07-13 20:51:42,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-13 20:51:42,570 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-13 20:51:42,570 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-13 20:51:42,571 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-13 20:51:42,571 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-13 20:51:42,571 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-13 20:51:42,571 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-13 20:51:42,571 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-13 20:51:42,571 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-13 20:51:42,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-13 20:51:42,571 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-13 20:51:42,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-13 20:51:42,572 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-13 20:51:42,572 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-13 20:51:42,572 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-13 20:51:42,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-13 20:51:42,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-13 20:51:42,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-13 20:51:42,572 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-13 20:51:42,572 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-13 20:51:42,572 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-13 20:51:42,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-13 20:51:42,573 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-13 20:51:42,573 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-13 20:51:42,573 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-13 20:51:42,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-13 20:51:42,863 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-13 20:51:42,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-13 20:51:42,865 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-13 20:51:42,866 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-13 20:51:42,867 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-correct07.bpl [2021-07-13 20:51:42,867 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-correct07.bpl' [2021-07-13 20:51:42,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-13 20:51:42,885 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-13 20:51:42,885 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-13 20:51:42,886 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-13 20:51:42,886 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-13 20:51:42,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-correct07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:51:42" (1/1) ... [2021-07-13 20:51:42,900 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-correct07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:51:42" (1/1) ... [2021-07-13 20:51:42,911 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-13 20:51:42,913 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-13 20:51:42,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-13 20:51:42,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-13 20:51:42,918 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-correct07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:51:42" (1/1) ... [2021-07-13 20:51:42,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-correct07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:51:42" (1/1) ... [2021-07-13 20:51:42,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-correct07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:51:42" (1/1) ... [2021-07-13 20:51:42,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-correct07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:51:42" (1/1) ... [2021-07-13 20:51:42,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-correct07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:51:42" (1/1) ... [2021-07-13 20:51:42,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-correct07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:51:42" (1/1) ... [2021-07-13 20:51:42,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-correct07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:51:42" (1/1) ... [2021-07-13 20:51:42,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-13 20:51:42,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-13 20:51:42,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-13 20:51:42,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-13 20:51:42,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-correct07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:51:42" (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 20:51:42,973 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThreadWithAssert given in one single declaration [2021-07-13 20:51:42,974 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThreadWithAssert [2021-07-13 20:51:42,974 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThreadWithAssert [2021-07-13 20:51:42,974 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-07-13 20:51:42,974 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-07-13 20:51:42,974 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-07-13 20:51:42,974 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-07-13 20:51:42,974 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-07-13 20:51:42,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-07-13 20:51:42,975 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-13 20:51:42,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-13 20:51:42,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-13 20:51:42,976 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 20:51:43,137 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-13 20:51:43,137 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-07-13 20:51:43,138 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadWithAssertEXIT is neither atomic block end nor error location. [2021-07-13 20:51:43,138 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-07-13 20:51:43,139 INFO L202 PluginConnector]: Adding new model bluetooth-correct07.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:51:43 BoogieIcfgContainer [2021-07-13 20:51:43,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-13 20:51:43,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-13 20:51:43,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-13 20:51:43,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-13 20:51:43,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-correct07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.07 08:51:42" (1/2) ... [2021-07-13 20:51:43,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@844b411 and model type bluetooth-correct07.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:51:43, skipping insertion in model container [2021-07-13 20:51:43,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-correct07.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:51:43" (2/2) ... [2021-07-13 20:51:43,143 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth-correct07.bpl [2021-07-13 20:51:43,147 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-13 20:51:43,147 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-13 20:51:43,147 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-13 20:51:43,148 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-13 20:51:43,180 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-13 20:51:43,195 INFO L255 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-07-13 20:51:43,207 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 20:51:43,207 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 20:51:43,207 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 20:51:43,207 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 20:51:43,207 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 20:51:43,207 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 20:51:43,207 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 20:51:43,207 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-13 20:51:43,214 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 67 places, 49 transitions, 138 flow [2021-07-13 20:51:43,868 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 10931 states, 10929 states have (on average 6.669960655137707) internal successors, (72896), 10930 states have internal predecessors, (72896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:51:43,907 INFO L276 IsEmpty]: Start isEmpty. Operand has 10931 states, 10929 states have (on average 6.669960655137707) internal successors, (72896), 10930 states have internal predecessors, (72896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:51:43,999 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-13 20:51:44,000 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/2) [2021-07-13 20:51:44,002 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-13 20:51:44,012 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 20:51:44,013 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 20:51:44,013 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 20:51:44,013 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 20:51:44,013 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 20:51:44,013 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 20:51:44,013 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 20:51:44,013 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadWithAssertThread1of1ForFork1======== [2021-07-13 20:51:44,070 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 67 places, 49 transitions, 138 flow [2021-07-13 20:51:46,100 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 43739 states, 43738 states have (on average 8.133705244867164) internal successors, (355752), 43738 states have internal predecessors, (355752), 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 20:51:46,311 INFO L276 IsEmpty]: Start isEmpty. Operand has 43739 states, 43738 states have (on average 8.133705244867164) internal successors, (355752), 43738 states have internal predecessors, (355752), 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 20:51:46,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-07-13 20:51:46,312 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:46,325 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:51:46,325 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:46,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:46,330 INFO L82 PathProgramCache]: Analyzing trace with hash -111411383, now seen corresponding path program 1 times [2021-07-13 20:51:46,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:46,348 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827478967] [2021-07-13 20:51:46,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:46,535 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 20:51:46,536 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:46,536 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827478967] [2021-07-13 20:51:46,536 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827478967] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:46,536 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:46,536 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-13 20:51:46,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74420767] [2021-07-13 20:51:46,539 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-13 20:51:46,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:46,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-13 20:51:46,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 20:51:46,748 INFO L87 Difference]: Start difference. First operand has 43739 states, 43738 states have (on average 8.133705244867164) internal successors, (355752), 43738 states have internal predecessors, (355752), 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 20:51:48,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:48,966 INFO L93 Difference]: Finished difference Result 47383 states and 380538 transitions. [2021-07-13 20:51:48,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 20:51:48,969 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 20:51:48,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:49,882 INFO L225 Difference]: With dead ends: 47383 [2021-07-13 20:51:49,883 INFO L226 Difference]: Without dead ends: 36451 [2021-07-13 20:51:49,884 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 20:51:51,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36451 states. [2021-07-13 20:51:52,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36451 to 36451. [2021-07-13 20:51:52,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36451 states, 36450 states have (on average 8.000109739368998) internal successors, (291604), 36450 states have internal predecessors, (291604), 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 20:51:53,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36451 states to 36451 states and 291604 transitions. [2021-07-13 20:51:53,484 INFO L78 Accepts]: Start accepts. Automaton has 36451 states and 291604 transitions. Word has length 8 [2021-07-13 20:51:53,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:51:53,484 INFO L482 AbstractCegarLoop]: Abstraction has 36451 states and 291604 transitions. [2021-07-13 20:51:53,484 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 20:51:53,484 INFO L276 IsEmpty]: Start isEmpty. Operand 36451 states and 291604 transitions. [2021-07-13 20:51:53,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-07-13 20:51:53,486 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:51:53,486 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:51:53,487 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-13 20:51:53,487 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:51:53,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:51:53,493 INFO L82 PathProgramCache]: Analyzing trace with hash -492176761, now seen corresponding path program 1 times [2021-07-13 20:51:53,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:51:53,494 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206654378] [2021-07-13 20:51:53,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:51:53,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:51:53,571 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 20:51:53,571 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:51:53,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206654378] [2021-07-13 20:51:53,572 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206654378] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:51:53,572 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:51:53,572 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-13 20:51:53,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10974563] [2021-07-13 20:51:53,573 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 20:51:53,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:51:53,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 20:51:53,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-07-13 20:51:53,575 INFO L87 Difference]: Start difference. First operand 36451 states and 291604 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 20:51:55,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:51:55,278 INFO L93 Difference]: Finished difference Result 67550 states and 540565 transitions. [2021-07-13 20:51:55,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-13 20:51:55,293 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 20:51:55,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:51:56,190 INFO L225 Difference]: With dead ends: 67550 [2021-07-13 20:51:56,191 INFO L226 Difference]: Without dead ends: 67550 [2021-07-13 20:51:56,191 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 24.5ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-07-13 20:51:57,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67550 states. [2021-07-13 20:52:00,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67550 to 67046. [2021-07-13 20:52:00,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67046 states, 67045 states have (on average 8.021731672757104) internal successors, (537817), 67045 states have internal predecessors, (537817), 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 20:52:01,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67046 states to 67046 states and 537817 transitions. [2021-07-13 20:52:01,765 INFO L78 Accepts]: Start accepts. Automaton has 67046 states and 537817 transitions. Word has length 12 [2021-07-13 20:52:01,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:52:01,766 INFO L482 AbstractCegarLoop]: Abstraction has 67046 states and 537817 transitions. [2021-07-13 20:52:01,766 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 20:52:01,766 INFO L276 IsEmpty]: Start isEmpty. Operand 67046 states and 537817 transitions. [2021-07-13 20:52:01,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-07-13 20:52:01,768 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:52:01,768 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:52:01,769 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-13 20:52:01,769 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:52:01,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:52:01,770 INFO L82 PathProgramCache]: Analyzing trace with hash 137902889, now seen corresponding path program 2 times [2021-07-13 20:52:01,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:52:01,784 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154923726] [2021-07-13 20:52:01,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:52:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:52:01,810 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 20:52:01,811 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:52:01,813 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154923726] [2021-07-13 20:52:01,814 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154923726] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:52:01,814 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:52:01,815 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-13 20:52:01,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935358822] [2021-07-13 20:52:01,820 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-13 20:52:01,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:52:01,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-13 20:52:01,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 20:52:01,821 INFO L87 Difference]: Start difference. First operand 67046 states and 537817 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 20:52:03,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:52:03,543 INFO L93 Difference]: Finished difference Result 62656 states and 402418 transitions. [2021-07-13 20:52:03,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-13 20:52:03,544 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 20:52:03,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:52:03,968 INFO L225 Difference]: With dead ends: 62656 [2021-07-13 20:52:03,968 INFO L226 Difference]: Without dead ends: 33633 [2021-07-13 20:52:03,968 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-13 20:52:04,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33633 states. [2021-07-13 20:52:05,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33633 to 31945. [2021-07-13 20:52:05,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31945 states, 31944 states have (on average 6.497088655146507) internal successors, (207543), 31944 states have internal predecessors, (207543), 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 20:52:06,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31945 states to 31945 states and 207543 transitions. [2021-07-13 20:52:06,101 INFO L78 Accepts]: Start accepts. Automaton has 31945 states and 207543 transitions. Word has length 12 [2021-07-13 20:52:06,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:52:06,101 INFO L482 AbstractCegarLoop]: Abstraction has 31945 states and 207543 transitions. [2021-07-13 20:52:06,101 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 20:52:06,102 INFO L276 IsEmpty]: Start isEmpty. Operand 31945 states and 207543 transitions. [2021-07-13 20:52:06,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-07-13 20:52:06,468 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:52:06,469 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:52:06,469 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-13 20:52:06,469 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:52:06,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:52:06,469 INFO L82 PathProgramCache]: Analyzing trace with hash -375127944, now seen corresponding path program 1 times [2021-07-13 20:52:06,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:52:06,469 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125194799] [2021-07-13 20:52:06,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:52:06,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:52:06,602 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 20:52:06,602 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:52:06,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125194799] [2021-07-13 20:52:06,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125194799] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:52:06,602 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:52:06,603 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 20:52:06,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364939965] [2021-07-13 20:52:06,603 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-13 20:52:06,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:52:06,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-13 20:52:06,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-07-13 20:52:06,604 INFO L87 Difference]: Start difference. First operand 31945 states and 207543 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 20:52:07,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:52:07,718 INFO L93 Difference]: Finished difference Result 55538 states and 366050 transitions. [2021-07-13 20:52:07,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-13 20:52:07,719 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 20:52:07,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:52:08,253 INFO L225 Difference]: With dead ends: 55538 [2021-07-13 20:52:08,254 INFO L226 Difference]: Without dead ends: 52912 [2021-07-13 20:52:08,254 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 32.5ms TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-07-13 20:52:08,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52912 states. [2021-07-13 20:52:10,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52912 to 38337. [2021-07-13 20:52:10,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38337 states, 38336 states have (on average 6.553657136894825) internal successors, (251241), 38336 states have internal predecessors, (251241), 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 20:52:10,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38337 states to 38337 states and 251241 transitions. [2021-07-13 20:52:10,905 INFO L78 Accepts]: Start accepts. Automaton has 38337 states and 251241 transitions. Word has length 15 [2021-07-13 20:52:10,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:52:10,906 INFO L482 AbstractCegarLoop]: Abstraction has 38337 states and 251241 transitions. [2021-07-13 20:52:10,906 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 20:52:10,906 INFO L276 IsEmpty]: Start isEmpty. Operand 38337 states and 251241 transitions. [2021-07-13 20:52:10,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-13 20:52:10,945 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:52:10,945 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 20:52:10,946 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-13 20:52:10,946 INFO L430 AbstractCegarLoop]: === Iteration 5 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:52:10,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:52:10,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1792738209, now seen corresponding path program 1 times [2021-07-13 20:52:10,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:52:10,946 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937762595] [2021-07-13 20:52:10,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:52:10,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:52:11,069 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 20:52:11,069 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:52:11,069 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937762595] [2021-07-13 20:52:11,069 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937762595] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:52:11,069 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:52:11,069 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 20:52:11,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703250661] [2021-07-13 20:52:11,070 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-13 20:52:11,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:52:11,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-13 20:52:11,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-07-13 20:52:11,071 INFO L87 Difference]: Start difference. First operand 38337 states and 251241 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 20:52:12,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:52:12,573 INFO L93 Difference]: Finished difference Result 65964 states and 436782 transitions. [2021-07-13 20:52:12,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-13 20:52:12,576 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 20:52:12,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:52:13,033 INFO L225 Difference]: With dead ends: 65964 [2021-07-13 20:52:13,033 INFO L226 Difference]: Without dead ends: 59950 [2021-07-13 20:52:13,034 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 39.1ms TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-07-13 20:52:13,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59950 states. [2021-07-13 20:52:15,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59950 to 41041. [2021-07-13 20:52:15,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41041 states, 41040 states have (on average 6.58874269005848) internal successors, (270402), 41040 states have internal predecessors, (270402), 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 20:52:16,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41041 states to 41041 states and 270402 transitions. [2021-07-13 20:52:16,335 INFO L78 Accepts]: Start accepts. Automaton has 41041 states and 270402 transitions. Word has length 18 [2021-07-13 20:52:16,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:52:16,335 INFO L482 AbstractCegarLoop]: Abstraction has 41041 states and 270402 transitions. [2021-07-13 20:52:16,335 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 20:52:16,336 INFO L276 IsEmpty]: Start isEmpty. Operand 41041 states and 270402 transitions. [2021-07-13 20:52:16,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-07-13 20:52:16,389 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:52:16,389 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:52:16,389 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-13 20:52:16,389 INFO L430 AbstractCegarLoop]: === Iteration 6 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:52:16,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:52:16,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1145885724, now seen corresponding path program 1 times [2021-07-13 20:52:16,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:52:16,390 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506064145] [2021-07-13 20:52:16,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:52:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:52:16,447 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 20:52:16,447 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:52:16,447 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506064145] [2021-07-13 20:52:16,448 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506064145] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:52:16,448 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:52:16,448 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-13 20:52:16,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835282028] [2021-07-13 20:52:16,448 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-13 20:52:16,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:52:16,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-13 20:52:16,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=37, Unknown=0, NotChecked=0, Total=72 [2021-07-13 20:52:16,449 INFO L87 Difference]: Start difference. First operand 41041 states and 270402 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:52:17,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:52:17,979 INFO L93 Difference]: Finished difference Result 68144 states and 452773 transitions. [2021-07-13 20:52:17,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-13 20:52:17,980 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-07-13 20:52:17,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:52:18,428 INFO L225 Difference]: With dead ends: 68144 [2021-07-13 20:52:18,428 INFO L226 Difference]: Without dead ends: 57829 [2021-07-13 20:52:18,429 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 29.8ms TimeCoverageRelationStatistics Valid=35, Invalid=37, Unknown=0, NotChecked=0, Total=72 [2021-07-13 20:52:19,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57829 states. [2021-07-13 20:52:20,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57829 to 39147. [2021-07-13 20:52:20,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39147 states, 39146 states have (on average 6.575077913452205) internal successors, (257388), 39146 states have internal predecessors, (257388), 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 20:52:20,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39147 states to 39147 states and 257388 transitions. [2021-07-13 20:52:20,973 INFO L78 Accepts]: Start accepts. Automaton has 39147 states and 257388 transitions. Word has length 21 [2021-07-13 20:52:20,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:52:20,973 INFO L482 AbstractCegarLoop]: Abstraction has 39147 states and 257388 transitions. [2021-07-13 20:52:20,973 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:52:20,973 INFO L276 IsEmpty]: Start isEmpty. Operand 39147 states and 257388 transitions. [2021-07-13 20:52:21,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-07-13 20:52:21,031 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:52:21,031 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:52:21,031 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-13 20:52:21,031 INFO L430 AbstractCegarLoop]: === Iteration 7 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:52:21,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:52:21,032 INFO L82 PathProgramCache]: Analyzing trace with hash -583088595, now seen corresponding path program 1 times [2021-07-13 20:52:21,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:52:21,032 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810823268] [2021-07-13 20:52:21,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:52:21,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:52:21,103 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 20:52:21,103 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:52:21,103 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810823268] [2021-07-13 20:52:21,103 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810823268] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:52:21,103 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:52:21,103 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-13 20:52:21,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297176021] [2021-07-13 20:52:21,103 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-13 20:52:21,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:52:21,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-13 20:52:21,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=46, Unknown=0, NotChecked=0, Total=90 [2021-07-13 20:52:21,104 INFO L87 Difference]: Start difference. First operand 39147 states and 257388 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:52:22,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:52:22,542 INFO L93 Difference]: Finished difference Result 61196 states and 406285 transitions. [2021-07-13 20:52:22,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-13 20:52:22,549 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-07-13 20:52:22,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:52:22,852 INFO L225 Difference]: With dead ends: 61196 [2021-07-13 20:52:22,852 INFO L226 Difference]: Without dead ends: 46310 [2021-07-13 20:52:22,853 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 39.3ms TimeCoverageRelationStatistics Valid=44, Invalid=46, Unknown=0, NotChecked=0, Total=90 [2021-07-13 20:52:23,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46310 states. [2021-07-13 20:52:24,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46310 to 32559. [2021-07-13 20:52:24,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32559 states, 32558 states have (on average 6.510688617236931) internal successors, (211975), 32558 states have internal predecessors, (211975), 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 20:52:24,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32559 states to 32559 states and 211975 transitions. [2021-07-13 20:52:24,805 INFO L78 Accepts]: Start accepts. Automaton has 32559 states and 211975 transitions. Word has length 24 [2021-07-13 20:52:24,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:52:24,806 INFO L482 AbstractCegarLoop]: Abstraction has 32559 states and 211975 transitions. [2021-07-13 20:52:24,806 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:52:24,806 INFO L276 IsEmpty]: Start isEmpty. Operand 32559 states and 211975 transitions. [2021-07-13 20:52:24,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-07-13 20:52:24,864 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:52:24,864 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:52:24,864 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-13 20:52:24,864 INFO L430 AbstractCegarLoop]: === Iteration 8 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:52:24,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:52:24,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1231246728, now seen corresponding path program 1 times [2021-07-13 20:52:24,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:52:24,865 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286786960] [2021-07-13 20:52:24,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:52:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:52:25,234 WARN L205 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2021-07-13 20:52:25,281 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 20:52:25,281 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:52:25,282 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286786960] [2021-07-13 20:52:25,282 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286786960] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:52:25,282 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:52:25,282 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-07-13 20:52:25,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915125978] [2021-07-13 20:52:25,282 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-13 20:52:25,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:52:25,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-13 20:52:25,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=56, Unknown=0, NotChecked=0, Total=110 [2021-07-13 20:52:25,284 INFO L87 Difference]: Start difference. First operand 32559 states and 211975 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:52:26,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:52:26,540 INFO L93 Difference]: Finished difference Result 45660 states and 301470 transitions. [2021-07-13 20:52:26,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-13 20:52:26,541 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-07-13 20:52:26,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:52:26,710 INFO L225 Difference]: With dead ends: 45660 [2021-07-13 20:52:26,710 INFO L226 Difference]: Without dead ends: 28584 [2021-07-13 20:52:26,710 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 363.8ms TimeCoverageRelationStatistics Valid=54, Invalid=56, Unknown=0, NotChecked=0, Total=110 [2021-07-13 20:52:27,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28584 states. [2021-07-13 20:52:27,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28584 to 22057. [2021-07-13 20:52:27,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22057 states, 22056 states have (on average 6.404379760609358) internal successors, (141255), 22056 states have internal predecessors, (141255), 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 20:52:27,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22057 states to 22057 states and 141255 transitions. [2021-07-13 20:52:27,871 INFO L78 Accepts]: Start accepts. Automaton has 22057 states and 141255 transitions. Word has length 27 [2021-07-13 20:52:27,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:52:27,872 INFO L482 AbstractCegarLoop]: Abstraction has 22057 states and 141255 transitions. [2021-07-13 20:52:27,872 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 20:52:27,872 INFO L276 IsEmpty]: Start isEmpty. Operand 22057 states and 141255 transitions. [2021-07-13 20:52:27,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-07-13 20:52:27,897 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 20:52:27,897 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 20:52:27,897 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-13 20:52:27,897 INFO L430 AbstractCegarLoop]: === Iteration 9 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-13 20:52:27,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 20:52:27,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1521852535, now seen corresponding path program 1 times [2021-07-13 20:52:27,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 20:52:27,898 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651166071] [2021-07-13 20:52:27,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 20:52:27,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 20:52:28,271 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 20:52:28,271 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 20:52:28,271 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651166071] [2021-07-13 20:52:28,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651166071] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 20:52:28,271 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 20:52:28,271 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-07-13 20:52:28,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585326901] [2021-07-13 20:52:28,272 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-13 20:52:28,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 20:52:28,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-13 20:52:28,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=67, Unknown=0, NotChecked=0, Total=132 [2021-07-13 20:52:28,272 INFO L87 Difference]: Start difference. First operand 22057 states and 141255 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 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 20:52:28,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 20:52:28,592 INFO L93 Difference]: Finished difference Result 14767 states and 99702 transitions. [2021-07-13 20:52:28,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-13 20:52:28,593 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 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 30 [2021-07-13 20:52:28,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 20:52:28,593 INFO L225 Difference]: With dead ends: 14767 [2021-07-13 20:52:28,593 INFO L226 Difference]: Without dead ends: 0 [2021-07-13 20:52:28,594 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 294.3ms TimeCoverageRelationStatistics Valid=65, Invalid=67, Unknown=0, NotChecked=0, Total=132 [2021-07-13 20:52:28,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-13 20:52:28,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-13 20:52:28,594 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 20:52:28,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-13 20:52:28,594 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2021-07-13 20:52:28,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 20:52:28,594 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-13 20:52:28,594 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 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 20:52:28,594 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-13 20:52:28,595 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-13 20:52:28,595 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-13 20:52:28,595 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadWithAssertThread1of1ForFork1 was SAFE (2/2) [2021-07-13 20:52:28,595 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-13 20:52:28,598 INFO L202 PluginConnector]: Adding new model bluetooth-correct07.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 08:52:28 BasicIcfg [2021-07-13 20:52:28,598 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-13 20:52:28,599 INFO L168 Benchmark]: Toolchain (without parser) took 45714.47 ms. Allocated memory was 163.6 MB in the beginning and 7.9 GB in the end (delta: 7.7 GB). Free memory was 143.4 MB in the beginning and 4.1 GB in the end (delta: -4.0 GB). Peak memory consumption was 3.7 GB. Max. memory is 8.0 GB. [2021-07-13 20:52:28,600 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 163.6 MB. Free memory is still 144.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-13 20:52:28,600 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.33 ms. Allocated memory is still 163.6 MB. Free memory was 143.4 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 20:52:28,602 INFO L168 Benchmark]: Boogie Preprocessor took 10.83 ms. Allocated memory is still 163.6 MB. Free memory was 141.6 MB in the beginning and 140.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-13 20:52:28,602 INFO L168 Benchmark]: RCFGBuilder took 214.98 ms. Allocated memory is still 163.6 MB. Free memory was 140.6 MB in the beginning and 124.7 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-07-13 20:52:28,603 INFO L168 Benchmark]: TraceAbstraction took 45458.49 ms. Allocated memory was 163.6 MB in the beginning and 7.9 GB in the end (delta: 7.7 GB). Free memory was 124.1 MB in the beginning and 4.1 GB in the end (delta: -4.0 GB). Peak memory consumption was 3.7 GB. Max. memory is 8.0 GB. [2021-07-13 20:52:28,609 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 163.6 MB. Free memory is still 144.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 26.33 ms. Allocated memory is still 163.6 MB. Free memory was 143.4 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 10.83 ms. Allocated memory is still 163.6 MB. Free memory was 141.6 MB in the beginning and 140.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 214.98 ms. Allocated memory is still 163.6 MB. Free memory was 140.6 MB in the beginning and 124.7 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 45458.49 ms. Allocated memory was 163.6 MB in the beginning and 7.9 GB in the end (delta: 7.7 GB). Free memory was 124.1 MB in the beginning and 4.1 GB in the end (delta: -4.0 GB). Peak memory consumption was 3.7 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 40]: 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 12 procedures, 65 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 794.2ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 130.8ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 660.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=10931occurred 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 12 procedures, 65 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 44582.7ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 814.8ms, AutomataDifference: 17202.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2086.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 561 SDtfs, 714 SDslu, 958 SDs, 0 SdLazy, 1223 SolverSat, 509 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 779.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 863.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=67046occurred in iteration=2, InterpolantAutomatonStates: 62, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 22907.2ms AutomataMinimizationTime, 9 MinimizatonAttempts, 74636 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 32.2ms SsaConstructionTime, 114.0ms SatisfiabilityAnalysisTime, 1211.0ms InterpolantComputationTime, 167 NumberOfCodeBlocks, 167 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 158 ConstructedInterpolants, 0 QuantifiedInterpolants, 724 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...