/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-customized07.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-1c3aa5735269c4be989a50fc1da9ea7b9492ef29-1c3aa57 [2021-07-01 09:25:06,661 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-01 09:25:06,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-01 09:25:06,705 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-01 09:25:06,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-01 09:25:06,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-01 09:25:06,729 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-01 09:25:06,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-01 09:25:06,732 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-01 09:25:06,733 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-01 09:25:06,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-01 09:25:06,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-01 09:25:06,742 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-01 09:25:06,757 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-01 09:25:06,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-01 09:25:06,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-01 09:25:06,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-01 09:25:06,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-01 09:25:06,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-01 09:25:06,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-01 09:25:06,773 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-07-01 09:25:06,800 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-01 09:25:06,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-01 09:25:06,800 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-01 09:25:06,800 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-01 09:25:06,801 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-01 09:25:06,801 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-01 09:25:06,801 INFO L138 SettingsManager]: * Use SBE=true [2021-07-01 09:25:06,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-01 09:25:06,802 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-01 09:25:06,802 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-01 09:25:06,802 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-01 09:25:06,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-01 09:25:06,802 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-01 09:25:06,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-01 09:25:06,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-01 09:25:06,802 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-01 09:25:06,802 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-01 09:25:06,802 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-01 09:25:06,803 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-01 09:25:06,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-01 09:25:06,803 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-01 09:25:06,803 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-01 09:25:06,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-01 09:25:06,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-01 09:25:06,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-01 09:25:06,803 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-01 09:25:06,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-01 09:25:06,804 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-01 09:25:06,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-01 09:25:06,804 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-01 09:25:06,804 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-01 09:25:06,804 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-01 09:25:07,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-01 09:25:07,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-01 09:25:07,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-01 09:25:07,129 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-01 09:25:07,129 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-01 09:25:07,130 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-customized07.bpl [2021-07-01 09:25:07,130 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-customized07.bpl' [2021-07-01 09:25:07,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-01 09:25:07,148 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-01 09:25:07,165 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-01 09:25:07,165 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-01 09:25:07,165 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-01 09:25:07,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:07" (1/1) ... [2021-07-01 09:25:07,187 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:07" (1/1) ... [2021-07-01 09:25:07,203 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-01 09:25:07,205 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-01 09:25:07,205 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-01 09:25:07,205 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-01 09:25:07,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:07" (1/1) ... [2021-07-01 09:25:07,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:07" (1/1) ... [2021-07-01 09:25:07,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:07" (1/1) ... [2021-07-01 09:25:07,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:07" (1/1) ... [2021-07-01 09:25:07,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:07" (1/1) ... [2021-07-01 09:25:07,213 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:07" (1/1) ... [2021-07-01 09:25:07,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:07" (1/1) ... [2021-07-01 09:25:07,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-01 09:25:07,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-01 09:25:07,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-01 09:25:07,215 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-01 09:25:07,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-01 09:25:07,293 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThreadWithAssert given in one single declaration [2021-07-01 09:25:07,293 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThreadWithAssert [2021-07-01 09:25:07,294 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThreadWithAssert [2021-07-01 09:25:07,294 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-07-01 09:25:07,294 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-07-01 09:25:07,294 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-07-01 09:25:07,294 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-07-01 09:25:07,294 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-07-01 09:25:07,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-07-01 09:25:07,294 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-01 09:25:07,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-01 09:25:07,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-01 09:25:07,295 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-01 09:25:07,528 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-01 09:25:07,528 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-07-01 09:25:07,529 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadWithAssertEXIT is neither atomic block end nor error location. [2021-07-01 09:25:07,529 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-07-01 09:25:07,530 INFO L202 PluginConnector]: Adding new model bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 09:25:07 BoogieIcfgContainer [2021-07-01 09:25:07,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-01 09:25:07,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-01 09:25:07,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-01 09:25:07,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-01 09:25:07,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 09:25:07" (1/2) ... [2021-07-01 09:25:07,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff14a4d and model type bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 09:25:07, skipping insertion in model container [2021-07-01 09:25:07,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 09:25:07" (2/2) ... [2021-07-01 09:25:07,537 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth-customized07.bpl [2021-07-01 09:25:07,541 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-01 09:25:07,541 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-01 09:25:07,541 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-01 09:25:07,542 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-01 09:25:07,583 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-01 09:25:07,603 INFO L255 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-07-01 09:25:07,619 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-01 09:25:07,620 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-01 09:25:07,620 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-01 09:25:07,620 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-01 09:25:07,620 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-01 09:25:07,620 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-01 09:25:07,620 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-01 09:25:07,620 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-01 09:25:07,630 INFO L112 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 67 places, 49 transitions, 138 flow [2021-07-01 09:25:21,454 INFO L134 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 54671 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) [2021-07-01 09:25:21,490 INFO L276 IsEmpty]: Start isEmpty. Operand has 54671 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) [2021-07-01 09:25:21,561 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-01 09:25:21,562 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/2) [2021-07-01 09:25:21,564 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-01 09:25:21,574 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-01 09:25:21,574 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-01 09:25:21,574 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-01 09:25:21,574 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-01 09:25:21,574 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-01 09:25:21,574 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-01 09:25:21,575 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-01 09:25:21,575 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadWithAssertThread1of1ForFork1======== [2021-07-01 09:25:21,578 INFO L112 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 67 places, 49 transitions, 138 flow [2021-07-01 09:25:35,135 INFO L134 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 54671 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) [2021-07-01 09:25:35,230 INFO L276 IsEmpty]: Start isEmpty. Operand has 54671 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) [2021-07-01 09:25:35,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-07-01 09:25:35,231 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 09:25:35,232 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 09:25:35,232 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:25:35,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:25:35,236 INFO L82 PathProgramCache]: Analyzing trace with hash 2133900617, now seen corresponding path program 1 times [2021-07-01 09:25:35,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:25:35,242 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978949949] [2021-07-01 09:25:35,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:25:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:25:35,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 09:25:35,366 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:25:35,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978949949] [2021-07-01 09:25:35,367 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978949949] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 09:25:35,367 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 09:25:35,367 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-01 09:25:35,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45329574] [2021-07-01 09:25:35,370 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-01 09:25:35,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:25:35,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-01 09:25:35,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-07-01 09:25:35,478 INFO L87 Difference]: Start difference. First operand has 54671 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 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:25:36,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-01 09:25:36,976 INFO L93 Difference]: Finished difference Result 103811 states and 845966 transitions. [2021-07-01 09:25:36,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-01 09:25:36,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-07-01 09:25:36,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-01 09:25:38,798 INFO L225 Difference]: With dead ends: 103811 [2021-07-01 09:25:38,798 INFO L226 Difference]: Without dead ends: 103811 [2021-07-01 09:25:38,799 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-07-01 09:25:40,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103811 states. [2021-07-01 09:25:44,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103811 to 103043. [2021-07-01 09:25:45,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103043 states, 103042 states have (on average 8.170163622600493) internal successors, (841870), 103042 states have internal predecessors, (841870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:25:46,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103043 states to 103043 states and 841870 transitions. [2021-07-01 09:25:46,389 INFO L78 Accepts]: Start accepts. Automaton has 103043 states and 841870 transitions. Word has length 8 [2021-07-01 09:25:46,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-01 09:25:46,389 INFO L482 AbstractCegarLoop]: Abstraction has 103043 states and 841870 transitions. [2021-07-01 09:25:46,389 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:25:46,389 INFO L276 IsEmpty]: Start isEmpty. Operand 103043 states and 841870 transitions. [2021-07-01 09:25:46,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-07-01 09:25:46,390 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 09:25:46,390 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 09:25:46,390 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-01 09:25:46,390 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:25:46,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:25:46,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1972420648, now seen corresponding path program 1 times [2021-07-01 09:25:46,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:25:46,391 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661812574] [2021-07-01 09:25:46,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:25:46,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:25:46,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 09:25:46,408 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:25:46,408 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661812574] [2021-07-01 09:25:46,409 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661812574] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 09:25:46,409 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 09:25:46,409 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-01 09:25:46,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075869543] [2021-07-01 09:25:46,410 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-01 09:25:46,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:25:46,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-01 09:25:46,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-01 09:25:46,411 INFO L87 Difference]: Start difference. First operand 103043 states and 841870 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:25:47,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-01 09:25:47,755 INFO L93 Difference]: Finished difference Result 85515 states and 551917 transitions. [2021-07-01 09:25:47,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 09:25:47,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2021-07-01 09:25:47,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-01 09:25:48,551 INFO L225 Difference]: With dead ends: 85515 [2021-07-01 09:25:48,551 INFO L226 Difference]: Without dead ends: 46067 [2021-07-01 09:25:48,552 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-01 09:25:49,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46067 states. [2021-07-01 09:25:50,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46067 to 46067. [2021-07-01 09:25:50,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46067 states, 46066 states have (on average 6.407914731038076) internal successors, (295187), 46066 states have internal predecessors, (295187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:25:50,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46067 states to 46067 states and 295187 transitions. [2021-07-01 09:25:50,967 INFO L78 Accepts]: Start accepts. Automaton has 46067 states and 295187 transitions. Word has length 10 [2021-07-01 09:25:50,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-01 09:25:50,967 INFO L482 AbstractCegarLoop]: Abstraction has 46067 states and 295187 transitions. [2021-07-01 09:25:50,968 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:25:50,968 INFO L276 IsEmpty]: Start isEmpty. Operand 46067 states and 295187 transitions. [2021-07-01 09:25:50,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-07-01 09:25:50,970 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 09:25:50,970 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 09:25:50,970 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-01 09:25:50,970 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:25:50,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:25:50,970 INFO L82 PathProgramCache]: Analyzing trace with hash 548574293, now seen corresponding path program 1 times [2021-07-01 09:25:50,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:25:50,971 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234740096] [2021-07-01 09:25:50,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:25:50,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:25:51,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 09:25:51,012 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:25:51,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234740096] [2021-07-01 09:25:51,014 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234740096] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 09:25:51,014 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 09:25:51,014 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-01 09:25:51,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218438385] [2021-07-01 09:25:51,014 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-01 09:25:51,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:25:51,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-01 09:25:51,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-07-01 09:25:51,015 INFO L87 Difference]: Start difference. First operand 46067 states and 295187 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:25:52,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-01 09:25:52,655 INFO L93 Difference]: Finished difference Result 100969 states and 648265 transitions. [2021-07-01 09:25:52,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-01 09:25:52,655 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-07-01 09:25:52,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-01 09:25:53,189 INFO L225 Difference]: With dead ends: 100969 [2021-07-01 09:25:53,189 INFO L226 Difference]: Without dead ends: 94503 [2021-07-01 09:25:53,189 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.6ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-07-01 09:25:54,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94503 states. [2021-07-01 09:25:56,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94503 to 55905. [2021-07-01 09:25:56,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55905 states, 55904 states have (on average 6.422134373211219) internal successors, (359023), 55904 states have internal predecessors, (359023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:25:56,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55905 states to 55905 states and 359023 transitions. [2021-07-01 09:25:56,503 INFO L78 Accepts]: Start accepts. Automaton has 55905 states and 359023 transitions. Word has length 13 [2021-07-01 09:25:56,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-01 09:25:56,504 INFO L482 AbstractCegarLoop]: Abstraction has 55905 states and 359023 transitions. [2021-07-01 09:25:56,504 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:25:56,504 INFO L276 IsEmpty]: Start isEmpty. Operand 55905 states and 359023 transitions. [2021-07-01 09:25:56,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-07-01 09:25:56,514 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 09:25:56,514 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 09:25:56,514 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-01 09:25:56,514 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:25:56,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:25:56,515 INFO L82 PathProgramCache]: Analyzing trace with hash 893506178, now seen corresponding path program 1 times [2021-07-01 09:25:56,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:25:56,515 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909392174] [2021-07-01 09:25:56,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:25:56,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:25:56,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 09:25:56,545 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:25:56,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909392174] [2021-07-01 09:25:56,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909392174] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 09:25:56,545 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 09:25:56,545 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-01 09:25:56,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300721885] [2021-07-01 09:25:56,545 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-01 09:25:56,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:25:56,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-01 09:25:56,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-07-01 09:25:56,546 INFO L87 Difference]: Start difference. First operand 55905 states and 359023 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:25:58,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-01 09:25:58,593 INFO L93 Difference]: Finished difference Result 139825 states and 900052 transitions. [2021-07-01 09:25:58,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 09:25:58,593 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-07-01 09:25:58,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-01 09:25:59,317 INFO L225 Difference]: With dead ends: 139825 [2021-07-01 09:25:59,317 INFO L226 Difference]: Without dead ends: 122740 [2021-07-01 09:25:59,317 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.9ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-07-01 09:26:00,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122740 states. [2021-07-01 09:26:02,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122740 to 60711. [2021-07-01 09:26:02,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60711 states, 60710 states have (on average 6.456613408005271) internal successors, (391981), 60710 states have internal predecessors, (391981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:26:03,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60711 states to 60711 states and 391981 transitions. [2021-07-01 09:26:03,738 INFO L78 Accepts]: Start accepts. Automaton has 60711 states and 391981 transitions. Word has length 16 [2021-07-01 09:26:03,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-01 09:26:03,738 INFO L482 AbstractCegarLoop]: Abstraction has 60711 states and 391981 transitions. [2021-07-01 09:26:03,738 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:26:03,738 INFO L276 IsEmpty]: Start isEmpty. Operand 60711 states and 391981 transitions. [2021-07-01 09:26:03,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-07-01 09:26:03,823 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 09:26:03,823 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 09:26:03,823 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-01 09:26:03,824 INFO L430 AbstractCegarLoop]: === Iteration 5 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:26:03,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:26:03,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1491802297, now seen corresponding path program 1 times [2021-07-01 09:26:03,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:26:03,824 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666564742] [2021-07-01 09:26:03,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:26:03,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:26:03,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 09:26:03,902 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:26:03,902 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666564742] [2021-07-01 09:26:03,902 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666564742] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 09:26:03,902 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 09:26:03,902 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-01 09:26:03,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491684858] [2021-07-01 09:26:03,903 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-01 09:26:03,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:26:03,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-01 09:26:03,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-07-01 09:26:03,903 INFO L87 Difference]: Start difference. First operand 60711 states and 391981 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:26:06,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-01 09:26:06,231 INFO L93 Difference]: Finished difference Result 158165 states and 1024251 transitions. [2021-07-01 09:26:06,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 09:26:06,231 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 19 [2021-07-01 09:26:06,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-01 09:26:07,735 INFO L225 Difference]: With dead ends: 158165 [2021-07-01 09:26:07,735 INFO L226 Difference]: Without dead ends: 129132 [2021-07-01 09:26:07,735 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.0ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-07-01 09:26:08,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129132 states. [2021-07-01 09:26:11,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129132 to 60933. [2021-07-01 09:26:11,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60933 states, 60932 states have (on average 6.48014179741351) internal successors, (394848), 60932 states have internal predecessors, (394848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:26:12,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60933 states to 60933 states and 394848 transitions. [2021-07-01 09:26:12,197 INFO L78 Accepts]: Start accepts. Automaton has 60933 states and 394848 transitions. Word has length 19 [2021-07-01 09:26:12,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-01 09:26:12,197 INFO L482 AbstractCegarLoop]: Abstraction has 60933 states and 394848 transitions. [2021-07-01 09:26:12,197 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:26:12,197 INFO L276 IsEmpty]: Start isEmpty. Operand 60933 states and 394848 transitions. [2021-07-01 09:26:12,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-07-01 09:26:12,247 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 09:26:12,247 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 09:26:12,247 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-01 09:26:12,247 INFO L430 AbstractCegarLoop]: === Iteration 6 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:26:12,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:26:12,248 INFO L82 PathProgramCache]: Analyzing trace with hash -60345478, now seen corresponding path program 1 times [2021-07-01 09:26:12,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:26:12,248 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012479351] [2021-07-01 09:26:12,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:26:12,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:26:12,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 09:26:12,293 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:26:12,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012479351] [2021-07-01 09:26:12,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012479351] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 09:26:12,293 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 09:26:12,293 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-01 09:26:12,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540079885] [2021-07-01 09:26:12,294 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-01 09:26:12,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:26:12,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-01 09:26:12,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-07-01 09:26:12,294 INFO L87 Difference]: Start difference. First operand 60933 states and 394848 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:26:14,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-01 09:26:14,151 INFO L93 Difference]: Finished difference Result 152163 states and 989410 transitions. [2021-07-01 09:26:14,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-01 09:26:14,153 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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 22 [2021-07-01 09:26:14,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-01 09:26:15,157 INFO L225 Difference]: With dead ends: 152163 [2021-07-01 09:26:15,158 INFO L226 Difference]: Without dead ends: 112890 [2021-07-01 09:26:15,158 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.2ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-07-01 09:26:16,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112890 states. [2021-07-01 09:26:17,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112890 to 57399. [2021-07-01 09:26:18,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57399 states, 57398 states have (on average 6.501115021429318) internal successors, (373151), 57398 states have internal predecessors, (373151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:26:18,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57399 states to 57399 states and 373151 transitions. [2021-07-01 09:26:18,849 INFO L78 Accepts]: Start accepts. Automaton has 57399 states and 373151 transitions. Word has length 22 [2021-07-01 09:26:18,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-01 09:26:18,849 INFO L482 AbstractCegarLoop]: Abstraction has 57399 states and 373151 transitions. [2021-07-01 09:26:18,849 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:26:18,849 INFO L276 IsEmpty]: Start isEmpty. Operand 57399 states and 373151 transitions. [2021-07-01 09:26:18,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-07-01 09:26:18,887 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 09:26:18,887 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 09:26:18,887 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-01 09:26:18,888 INFO L430 AbstractCegarLoop]: === Iteration 7 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:26:18,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:26:18,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1071094347, now seen corresponding path program 1 times [2021-07-01 09:26:18,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:26:18,888 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308170940] [2021-07-01 09:26:18,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:26:18,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:26:18,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 09:26:18,946 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:26:18,946 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308170940] [2021-07-01 09:26:18,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308170940] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 09:26:18,946 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 09:26:18,946 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-01 09:26:18,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956104529] [2021-07-01 09:26:18,946 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-01 09:26:18,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:26:18,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-01 09:26:18,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-07-01 09:26:18,947 INFO L87 Difference]: Start difference. First operand 57399 states and 373151 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:26:20,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-01 09:26:20,933 INFO L93 Difference]: Finished difference Result 122725 states and 798907 transitions. [2021-07-01 09:26:20,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-01 09:26:20,933 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 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 25 [2021-07-01 09:26:20,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-01 09:26:21,703 INFO L225 Difference]: With dead ends: 122725 [2021-07-01 09:26:21,703 INFO L226 Difference]: Without dead ends: 78358 [2021-07-01 09:26:21,703 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.2ms TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-07-01 09:26:22,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78358 states. [2021-07-01 09:26:23,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78358 to 48557. [2021-07-01 09:26:23,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48557 states, 48556 states have (on average 6.5208625092676495) internal successors, (316627), 48556 states have internal predecessors, (316627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:26:24,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48557 states to 48557 states and 316627 transitions. [2021-07-01 09:26:24,446 INFO L78 Accepts]: Start accepts. Automaton has 48557 states and 316627 transitions. Word has length 25 [2021-07-01 09:26:24,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-01 09:26:24,446 INFO L482 AbstractCegarLoop]: Abstraction has 48557 states and 316627 transitions. [2021-07-01 09:26:24,446 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:26:24,446 INFO L276 IsEmpty]: Start isEmpty. Operand 48557 states and 316627 transitions. [2021-07-01 09:26:24,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-07-01 09:26:24,487 INFO L496 BasicCegarLoop]: Found error trace [2021-07-01 09:26:24,488 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-01 09:26:24,488 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-01 09:26:24,488 INFO L430 AbstractCegarLoop]: === Iteration 8 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 09:26:24,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 09:26:24,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1724417986, now seen corresponding path program 1 times [2021-07-01 09:26:24,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 09:26:24,509 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042513885] [2021-07-01 09:26:24,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 09:26:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 09:26:24,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 09:26:24,636 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 09:26:24,636 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042513885] [2021-07-01 09:26:24,637 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042513885] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 09:26:24,637 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 09:26:24,637 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-01 09:26:24,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962236871] [2021-07-01 09:26:24,637 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-01 09:26:24,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 09:26:24,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-01 09:26:24,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-07-01 09:26:24,638 INFO L87 Difference]: Start difference. First operand 48557 states and 316627 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:26:25,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-01 09:26:25,082 INFO L93 Difference]: Finished difference Result 39809 states and 258307 transitions. [2021-07-01 09:26:25,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-01 09:26:25,083 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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 28 [2021-07-01 09:26:25,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-01 09:26:25,083 INFO L225 Difference]: With dead ends: 39809 [2021-07-01 09:26:25,083 INFO L226 Difference]: Without dead ends: 0 [2021-07-01 09:26:25,083 INFO L760 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.7ms TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-07-01 09:26:25,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-01 09:26:25,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-01 09:26:25,083 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) [2021-07-01 09:26:25,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-01 09:26:25,084 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2021-07-01 09:26:25,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-01 09:26:25,084 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-01 09:26:25,084 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-01 09:26:25,084 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-01 09:26:25,084 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-01 09:26:25,084 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-01 09:26:25,084 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadWithAssertThread1of1ForFork1 was SAFE (2/2) [2021-07-01 09:26:25,084 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-01 09:26:25,086 INFO L202 PluginConnector]: Adding new model bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.07 09:26:25 BasicIcfg [2021-07-01 09:26:25,086 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-01 09:26:25,087 INFO L168 Benchmark]: Toolchain (without parser) took 77938.56 ms. Allocated memory was 192.9 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 172.6 MB in the beginning and 5.9 GB in the end (delta: -5.8 GB). Peak memory consumption was 2.0 GB. Max. memory is 8.0 GB. [2021-07-01 09:26:25,087 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 192.9 MB. Free memory is still 173.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-01 09:26:25,087 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.59 ms. Allocated memory is still 192.9 MB. Free memory was 172.5 MB in the beginning and 170.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-01 09:26:25,088 INFO L168 Benchmark]: Boogie Preprocessor took 9.25 ms. Allocated memory is still 192.9 MB. Free memory was 170.7 MB in the beginning and 169.8 MB in the end (delta: 931.5 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-01 09:26:25,088 INFO L168 Benchmark]: RCFGBuilder took 316.01 ms. Allocated memory is still 192.9 MB. Free memory was 169.7 MB in the beginning and 155.3 MB in the end (delta: 14.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-07-01 09:26:25,088 INFO L168 Benchmark]: TraceAbstraction took 77554.16 ms. Allocated memory was 192.9 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 154.8 MB in the beginning and 5.9 GB in the end (delta: -5.8 GB). Peak memory consumption was 2.0 GB. Max. memory is 8.0 GB. [2021-07-01 09:26:25,089 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 0.09 ms. Allocated memory is still 192.9 MB. Free memory is still 173.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 38.59 ms. Allocated memory is still 192.9 MB. Free memory was 172.5 MB in the beginning and 170.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 9.25 ms. Allocated memory is still 192.9 MB. Free memory was 170.7 MB in the beginning and 169.8 MB in the end (delta: 931.5 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 316.01 ms. Allocated memory is still 192.9 MB. Free memory was 169.7 MB in the beginning and 155.3 MB in the end (delta: 14.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 77554.16 ms. Allocated memory was 192.9 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 154.8 MB in the beginning and 5.9 GB in the end (delta: -5.8 GB). Peak memory consumption was 2.0 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: 13944.9ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 106.7ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13834.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=54671occurred 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: 63510.2ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 321.8ms, AutomataDifference: 20416.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13560.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 502 SDtfs, 732 SDslu, 697 SDs, 0 SdLazy, 1121 SolverSat, 430 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1080.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 163.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=103043occurred in iteration=1, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 28624.5ms AutomataMinimizationTime, 8 MinimizatonAttempts, 254886 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 14.5ms SsaConstructionTime, 90.9ms SatisfiabilityAnalysisTime, 358.5ms InterpolantComputationTime, 141 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 133 ConstructedInterpolants, 0 QuantifiedInterpolants, 381 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...