/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-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-correct05.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-14 02:10:59,292 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-14 02:10:59,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-14 02:10:59,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-14 02:10:59,324 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-14 02:10:59,327 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-14 02:10:59,329 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-14 02:10:59,333 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-14 02:10:59,335 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-14 02:10:59,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-14 02:10:59,339 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-14 02:10:59,340 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-14 02:10:59,340 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-14 02:10:59,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-14 02:10:59,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-14 02:10:59,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-14 02:10:59,347 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-14 02:10:59,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-14 02:10:59,349 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-14 02:10:59,353 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-14 02:10:59,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-14 02:10:59,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-14 02:10:59,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-14 02:10:59,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-14 02:10:59,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-14 02:10:59,362 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-14 02:10:59,362 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-14 02:10:59,382 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-14 02:10:59,382 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-14 02:10:59,384 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-14 02:10:59,384 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-14 02:10:59,385 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-14 02:10:59,386 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-14 02:10:59,386 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-14 02:10:59,387 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-14 02:10:59,387 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-14 02:10:59,388 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-14 02:10:59,388 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-14 02:10:59,388 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-14 02:10:59,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-14 02:10:59,389 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-14 02:10:59,389 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-Delay.epf [2021-07-14 02:10:59,421 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-14 02:10:59,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-14 02:10:59,423 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-14 02:10:59,423 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-14 02:10:59,423 INFO L138 SettingsManager]: * Use SBE=true [2021-07-14 02:10:59,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-14 02:10:59,423 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-14 02:10:59,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-14 02:10:59,424 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-14 02:10:59,424 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-14 02:10:59,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-14 02:10:59,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-14 02:10:59,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-14 02:10:59,425 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-14 02:10:59,425 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-14 02:10:59,425 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-14 02:10:59,425 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-14 02:10:59,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-14 02:10:59,425 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-14 02:10:59,425 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-14 02:10:59,426 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-14 02:10:59,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 02:10:59,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-14 02:10:59,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-14 02:10:59,426 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-14 02:10:59,426 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-14 02:10:59,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-14 02:10:59,426 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-14 02:10:59,427 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-14 02:10:59,427 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-07-14 02:10:59,427 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-14 02:10:59,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-14 02:10:59,750 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-14 02:10:59,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-14 02:10:59,753 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-14 02:10:59,754 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-14 02:10:59,755 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-correct05.bpl [2021-07-14 02:10:59,755 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-correct05.bpl' [2021-07-14 02:10:59,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-14 02:10:59,778 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-14 02:10:59,779 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-14 02:10:59,779 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-14 02:10:59,779 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-14 02:10:59,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-correct05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:10:59" (1/1) ... [2021-07-14 02:10:59,797 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-correct05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:10:59" (1/1) ... [2021-07-14 02:10:59,811 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-14 02:10:59,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-14 02:10:59,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-14 02:10:59,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-14 02:10:59,819 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-correct05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:10:59" (1/1) ... [2021-07-14 02:10:59,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-correct05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:10:59" (1/1) ... [2021-07-14 02:10:59,820 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-correct05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:10:59" (1/1) ... [2021-07-14 02:10:59,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-correct05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:10:59" (1/1) ... [2021-07-14 02:10:59,822 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-correct05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:10:59" (1/1) ... [2021-07-14 02:10:59,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-correct05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:10:59" (1/1) ... [2021-07-14 02:10:59,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-correct05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:10:59" (1/1) ... [2021-07-14 02:10:59,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-14 02:10:59,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-14 02:10:59,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-14 02:10:59,826 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-14 02:10:59,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-correct05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:10:59" (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 [2021-07-14 02:10:59,945 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThreadWithAssert given in one single declaration [2021-07-14 02:10:59,946 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThreadWithAssert [2021-07-14 02:10:59,947 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThreadWithAssert [2021-07-14 02:10:59,947 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-07-14 02:10:59,947 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-07-14 02:10:59,947 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-07-14 02:10:59,947 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-07-14 02:10:59,947 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-07-14 02:10:59,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-07-14 02:10:59,948 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-14 02:10:59,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-14 02:10:59,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-14 02:10:59,949 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-14 02:11:00,150 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-14 02:11:00,150 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-07-14 02:11:00,151 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadWithAssertEXIT is neither atomic block end nor error location. [2021-07-14 02:11:00,151 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-07-14 02:11:00,152 INFO L202 PluginConnector]: Adding new model bluetooth-correct05.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:11:00 BoogieIcfgContainer [2021-07-14 02:11:00,153 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-14 02:11:00,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-14 02:11:00,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-14 02:11:00,156 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-14 02:11:00,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-correct05.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:10:59" (1/2) ... [2021-07-14 02:11:00,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4703e4 and model type bluetooth-correct05.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 02:11:00, skipping insertion in model container [2021-07-14 02:11:00,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-correct05.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:11:00" (2/2) ... [2021-07-14 02:11:00,157 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth-correct05.bpl [2021-07-14 02:11:00,161 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-14 02:11:00,161 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-14 02:11:00,161 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-14 02:11:00,162 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-14 02:11:00,229 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-14 02:11:00,248 INFO L255 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-07-14 02:11:00,264 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 02:11:00,264 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 02:11:00,264 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 02:11:00,264 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 02:11:00,264 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 02:11:00,265 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 02:11:00,265 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 02:11:00,265 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-14 02:11:00,680 INFO L276 IsEmpty]: Start isEmpty. Operand has 1211 states, 1010 states have (on average 2.281188118811881) internal successors, (2304), 1210 states have internal predecessors, (2304), 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) [2021-07-14 02:11:00,718 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-14 02:11:00,719 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/2) [2021-07-14 02:11:00,723 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-14 02:11:00,725 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 02:11:00,725 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 02:11:00,725 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 02:11:00,725 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 02:11:00,725 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 02:11:00,725 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 02:11:00,725 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 02:11:00,725 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadWithAssertThread1of1ForFork1======== [2021-07-14 02:11:01,686 INFO L276 IsEmpty]: Start isEmpty. Operand has 4859 states, 4835 states have (on average 5.80124095139607) internal successors, (28049), 4858 states have internal predecessors, (28049), 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) [2021-07-14 02:11:01,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-07-14 02:11:01,688 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 02:11:01,689 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 02:11:01,689 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 02:11:01,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 02:11:01,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1198405354, now seen corresponding path program 1 times [2021-07-14 02:11:01,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 02:11:01,701 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529848935] [2021-07-14 02:11:01,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 02:11:01,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 02:11:01,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:01,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 02:11:01,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:01,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-14 02:11:01,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 02:11:01,802 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 02:11:01,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529848935] [2021-07-14 02:11:01,803 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529848935] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 02:11:01,803 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 02:11:01,804 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-14 02:11:01,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763974467] [2021-07-14 02:11:01,806 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-14 02:11:01,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 02:11:01,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-14 02:11:01,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-14 02:11:01,858 INFO L87 Difference]: Start difference. First operand has 4859 states, 4835 states have (on average 5.80124095139607) internal successors, (28049), 4858 states have internal predecessors, (28049), 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) [2021-07-14 02:11:01,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 02:11:01,974 INFO L93 Difference]: Finished difference Result 5263 states and 29811 transitions. [2021-07-14 02:11:01,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 02:11:01,976 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 [2021-07-14 02:11:01,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 02:11:02,037 INFO L225 Difference]: With dead ends: 5263 [2021-07-14 02:11:02,038 INFO L226 Difference]: Without dead ends: 4009 [2021-07-14 02:11:02,039 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-14 02:11:02,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4009 states. [2021-07-14 02:11:02,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4009 to 4009. [2021-07-14 02:11:02,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4009 states, 4003 states have (on average 5.666000499625281) internal successors, (22681), 4008 states have internal predecessors, (22681), 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) [2021-07-14 02:11:02,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4009 states to 4009 states and 22681 transitions. [2021-07-14 02:11:02,300 INFO L78 Accepts]: Start accepts. Automaton has 4009 states and 22681 transitions. Word has length 8 [2021-07-14 02:11:02,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 02:11:02,301 INFO L482 AbstractCegarLoop]: Abstraction has 4009 states and 22681 transitions. [2021-07-14 02:11:02,301 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) [2021-07-14 02:11:02,301 INFO L276 IsEmpty]: Start isEmpty. Operand 4009 states and 22681 transitions. [2021-07-14 02:11:02,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-07-14 02:11:02,303 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 02:11:02,303 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 02:11:02,303 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-14 02:11:02,303 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 02:11:02,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 02:11:02,304 INFO L82 PathProgramCache]: Analyzing trace with hash -414434776, now seen corresponding path program 1 times [2021-07-14 02:11:02,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 02:11:02,304 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431440187] [2021-07-14 02:11:02,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 02:11:02,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 02:11:02,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:02,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 02:11:02,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:02,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-14 02:11:02,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:02,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-14 02:11:02,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:02,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-14 02:11:02,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:02,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 02:11:02,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 02:11:02,517 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 02:11:02,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431440187] [2021-07-14 02:11:02,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431440187] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 02:11:02,518 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 02:11:02,518 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-14 02:11:02,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073309810] [2021-07-14 02:11:02,520 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-14 02:11:02,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 02:11:02,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-14 02:11:02,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-07-14 02:11:02,523 INFO L87 Difference]: Start difference. First operand 4009 states and 22681 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) [2021-07-14 02:11:02,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 02:11:02,714 INFO L93 Difference]: Finished difference Result 7252 states and 41129 transitions. [2021-07-14 02:11:02,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 02:11:02,715 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 [2021-07-14 02:11:02,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 02:11:02,794 INFO L225 Difference]: With dead ends: 7252 [2021-07-14 02:11:02,794 INFO L226 Difference]: Without dead ends: 7252 [2021-07-14 02:11:02,795 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 22.0ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-07-14 02:11:02,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7252 states. [2021-07-14 02:11:03,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7252 to 7100. [2021-07-14 02:11:03,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7100 states, 7094 states have (on average 5.730899351564703) internal successors, (40655), 7099 states have internal predecessors, (40655), 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) [2021-07-14 02:11:03,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7100 states to 7100 states and 40655 transitions. [2021-07-14 02:11:03,231 INFO L78 Accepts]: Start accepts. Automaton has 7100 states and 40655 transitions. Word has length 12 [2021-07-14 02:11:03,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 02:11:03,231 INFO L482 AbstractCegarLoop]: Abstraction has 7100 states and 40655 transitions. [2021-07-14 02:11:03,231 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) [2021-07-14 02:11:03,232 INFO L276 IsEmpty]: Start isEmpty. Operand 7100 states and 40655 transitions. [2021-07-14 02:11:03,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-07-14 02:11:03,234 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 02:11:03,235 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 02:11:03,235 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-14 02:11:03,238 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 02:11:03,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 02:11:03,240 INFO L82 PathProgramCache]: Analyzing trace with hash 44585324, now seen corresponding path program 2 times [2021-07-14 02:11:03,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 02:11:03,244 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016383904] [2021-07-14 02:11:03,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 02:11:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 02:11:03,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:03,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 02:11:03,275 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:03,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 02:11:03,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:03,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 02:11:03,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 02:11:03,278 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 02:11:03,278 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016383904] [2021-07-14 02:11:03,279 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016383904] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 02:11:03,279 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 02:11:03,279 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-14 02:11:03,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919843987] [2021-07-14 02:11:03,279 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-14 02:11:03,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 02:11:03,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-14 02:11:03,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-14 02:11:03,280 INFO L87 Difference]: Start difference. First operand 7100 states and 40655 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) [2021-07-14 02:11:03,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 02:11:03,353 INFO L93 Difference]: Finished difference Result 6706 states and 30943 transitions. [2021-07-14 02:11:03,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 02:11:03,354 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 [2021-07-14 02:11:03,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 02:11:03,378 INFO L225 Difference]: With dead ends: 6706 [2021-07-14 02:11:03,378 INFO L226 Difference]: Without dead ends: 3543 [2021-07-14 02:11:03,379 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-14 02:11:03,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3543 states. [2021-07-14 02:11:03,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3543 to 3379. [2021-07-14 02:11:03,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3379 states, 3373 states have (on average 4.535724873999407) internal successors, (15299), 3378 states have internal predecessors, (15299), 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) [2021-07-14 02:11:03,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3379 states to 3379 states and 15299 transitions. [2021-07-14 02:11:03,595 INFO L78 Accepts]: Start accepts. Automaton has 3379 states and 15299 transitions. Word has length 12 [2021-07-14 02:11:03,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 02:11:03,595 INFO L482 AbstractCegarLoop]: Abstraction has 3379 states and 15299 transitions. [2021-07-14 02:11:03,595 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) [2021-07-14 02:11:03,595 INFO L276 IsEmpty]: Start isEmpty. Operand 3379 states and 15299 transitions. [2021-07-14 02:11:03,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-07-14 02:11:03,599 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 02:11:03,599 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 02:11:03,600 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-14 02:11:03,600 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 02:11:03,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 02:11:03,603 INFO L82 PathProgramCache]: Analyzing trace with hash -645346953, now seen corresponding path program 1 times [2021-07-14 02:11:03,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 02:11:03,603 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802449099] [2021-07-14 02:11:03,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 02:11:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 02:11:03,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:03,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 02:11:03,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:03,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-14 02:11:03,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:03,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-14 02:11:03,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:03,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-14 02:11:03,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:03,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-14 02:11:03,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:03,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-14 02:11:03,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:03,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 02:11:03,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 02:11:03,745 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 02:11:03,745 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802449099] [2021-07-14 02:11:03,745 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802449099] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 02:11:03,745 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 02:11:03,745 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-14 02:11:03,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510122990] [2021-07-14 02:11:03,746 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 02:11:03,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 02:11:03,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 02:11:03,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-07-14 02:11:03,746 INFO L87 Difference]: Start difference. First operand 3379 states and 15299 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) [2021-07-14 02:11:03,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 02:11:03,873 INFO L93 Difference]: Finished difference Result 5660 states and 25945 transitions. [2021-07-14 02:11:03,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-14 02:11:03,874 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 [2021-07-14 02:11:03,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 02:11:03,895 INFO L225 Difference]: With dead ends: 5660 [2021-07-14 02:11:03,895 INFO L226 Difference]: Without dead ends: 5138 [2021-07-14 02:11:03,896 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 90.7ms TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-07-14 02:11:03,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5138 states. [2021-07-14 02:11:03,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5138 to 3773. [2021-07-14 02:11:04,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3773 states, 3767 states have (on average 4.578444385452615) internal successors, (17247), 3772 states have internal predecessors, (17247), 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) [2021-07-14 02:11:04,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3773 states to 3773 states and 17247 transitions. [2021-07-14 02:11:04,021 INFO L78 Accepts]: Start accepts. Automaton has 3773 states and 17247 transitions. Word has length 15 [2021-07-14 02:11:04,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 02:11:04,022 INFO L482 AbstractCegarLoop]: Abstraction has 3773 states and 17247 transitions. [2021-07-14 02:11:04,022 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) [2021-07-14 02:11:04,022 INFO L276 IsEmpty]: Start isEmpty. Operand 3773 states and 17247 transitions. [2021-07-14 02:11:04,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-07-14 02:11:04,028 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 02:11:04,029 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-14 02:11:04,029 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-14 02:11:04,029 INFO L430 AbstractCegarLoop]: === Iteration 5 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 02:11:04,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 02:11:04,029 INFO L82 PathProgramCache]: Analyzing trace with hash 164372072, now seen corresponding path program 1 times [2021-07-14 02:11:04,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 02:11:04,029 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45080027] [2021-07-14 02:11:04,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 02:11:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 02:11:04,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:04,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 02:11:04,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:04,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-14 02:11:04,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:04,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-14 02:11:04,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:04,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-14 02:11:04,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:04,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-14 02:11:04,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:04,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-14 02:11:04,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:04,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-14 02:11:04,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:04,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-14 02:11:04,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:04,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 02:11:04,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 02:11:04,167 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 02:11:04,168 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45080027] [2021-07-14 02:11:04,169 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45080027] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 02:11:04,169 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 02:11:04,169 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-14 02:11:04,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820209368] [2021-07-14 02:11:04,169 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-14 02:11:04,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 02:11:04,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-14 02:11:04,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-07-14 02:11:04,170 INFO L87 Difference]: Start difference. First operand 3773 states and 17247 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) [2021-07-14 02:11:04,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 02:11:04,336 INFO L93 Difference]: Finished difference Result 5952 states and 27472 transitions. [2021-07-14 02:11:04,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-14 02:11:04,337 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 [2021-07-14 02:11:04,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 02:11:04,366 INFO L225 Difference]: With dead ends: 5952 [2021-07-14 02:11:04,366 INFO L226 Difference]: Without dead ends: 4790 [2021-07-14 02:11:04,367 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 92.0ms TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-07-14 02:11:04,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4790 states. [2021-07-14 02:11:04,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4790 to 3469. [2021-07-14 02:11:04,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3469 states, 3463 states have (on average 4.57204735778227) internal successors, (15833), 3468 states have internal predecessors, (15833), 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) [2021-07-14 02:11:04,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3469 states to 3469 states and 15833 transitions. [2021-07-14 02:11:04,522 INFO L78 Accepts]: Start accepts. Automaton has 3469 states and 15833 transitions. Word has length 18 [2021-07-14 02:11:04,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 02:11:04,522 INFO L482 AbstractCegarLoop]: Abstraction has 3469 states and 15833 transitions. [2021-07-14 02:11:04,522 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) [2021-07-14 02:11:04,522 INFO L276 IsEmpty]: Start isEmpty. Operand 3469 states and 15833 transitions. [2021-07-14 02:11:04,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-07-14 02:11:04,530 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 02:11:04,530 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] [2021-07-14 02:11:04,530 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-14 02:11:04,530 INFO L430 AbstractCegarLoop]: === Iteration 6 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 02:11:04,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 02:11:04,531 INFO L82 PathProgramCache]: Analyzing trace with hash 415498593, now seen corresponding path program 1 times [2021-07-14 02:11:04,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 02:11:04,531 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482952135] [2021-07-14 02:11:04,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 02:11:04,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 02:11:04,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:04,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 02:11:04,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:04,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-14 02:11:04,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:04,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-14 02:11:04,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:04,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-14 02:11:04,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:04,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-14 02:11:04,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:04,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-14 02:11:04,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:04,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-14 02:11:04,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:04,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-14 02:11:04,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:04,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-14 02:11:04,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:04,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-14 02:11:04,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:04,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 02:11:04,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 02:11:04,605 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 02:11:04,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482952135] [2021-07-14 02:11:04,605 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482952135] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 02:11:04,605 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 02:11:04,605 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-14 02:11:04,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016144255] [2021-07-14 02:11:04,606 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-07-14 02:11:04,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 02:11:04,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-07-14 02:11:04,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=37, Unknown=0, NotChecked=0, Total=72 [2021-07-14 02:11:04,606 INFO L87 Difference]: Start difference. First operand 3469 states and 15833 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) [2021-07-14 02:11:04,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 02:11:04,787 INFO L93 Difference]: Finished difference Result 4862 states and 22329 transitions. [2021-07-14 02:11:04,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 02:11:04,788 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 [2021-07-14 02:11:04,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 02:11:04,801 INFO L225 Difference]: With dead ends: 4862 [2021-07-14 02:11:04,801 INFO L226 Difference]: Without dead ends: 3134 [2021-07-14 02:11:04,801 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 39.5ms TimeCoverageRelationStatistics Valid=35, Invalid=37, Unknown=0, NotChecked=0, Total=72 [2021-07-14 02:11:04,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3134 states. [2021-07-14 02:11:04,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3134 to 2447. [2021-07-14 02:11:04,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2447 states, 2441 states have (on average 4.455551003687013) internal successors, (10876), 2446 states have internal predecessors, (10876), 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) [2021-07-14 02:11:04,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2447 states to 2447 states and 10876 transitions. [2021-07-14 02:11:04,868 INFO L78 Accepts]: Start accepts. Automaton has 2447 states and 10876 transitions. Word has length 21 [2021-07-14 02:11:04,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 02:11:04,868 INFO L482 AbstractCegarLoop]: Abstraction has 2447 states and 10876 transitions. [2021-07-14 02:11:04,868 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) [2021-07-14 02:11:04,868 INFO L276 IsEmpty]: Start isEmpty. Operand 2447 states and 10876 transitions. [2021-07-14 02:11:04,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-07-14 02:11:04,872 INFO L500 BasicCegarLoop]: Found error trace [2021-07-14 02:11:04,872 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] [2021-07-14 02:11:04,872 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-14 02:11:04,872 INFO L430 AbstractCegarLoop]: === Iteration 7 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 02:11:04,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 02:11:04,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1835394668, now seen corresponding path program 1 times [2021-07-14 02:11:04,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 02:11:04,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878863518] [2021-07-14 02:11:04,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 02:11:04,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 02:11:04,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:04,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-14 02:11:04,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:04,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-14 02:11:04,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:04,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-14 02:11:04,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:04,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-14 02:11:04,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:04,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-14 02:11:04,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:04,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-14 02:11:04,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:04,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-14 02:11:04,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:04,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-14 02:11:04,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:04,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-14 02:11:04,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:04,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-14 02:11:04,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:04,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-07-14 02:11:04,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:04,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-07-14 02:11:04,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 02:11:04,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-14 02:11:04,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 02:11:04,978 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 02:11:04,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878863518] [2021-07-14 02:11:04,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878863518] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 02:11:04,978 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 02:11:04,978 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-07-14 02:11:04,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375893524] [2021-07-14 02:11:04,978 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-07-14 02:11:04,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 02:11:04,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-07-14 02:11:04,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=46, Unknown=0, NotChecked=0, Total=90 [2021-07-14 02:11:04,979 INFO L87 Difference]: Start difference. First operand 2447 states and 10876 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) [2021-07-14 02:11:05,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-14 02:11:05,109 INFO L93 Difference]: Finished difference Result 1643 states and 7668 transitions. [2021-07-14 02:11:05,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 02:11:05,111 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 [2021-07-14 02:11:05,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-14 02:11:05,112 INFO L225 Difference]: With dead ends: 1643 [2021-07-14 02:11:05,112 INFO L226 Difference]: Without dead ends: 0 [2021-07-14 02:11:05,112 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 38.2ms TimeCoverageRelationStatistics Valid=44, Invalid=46, Unknown=0, NotChecked=0, Total=90 [2021-07-14 02:11:05,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-14 02:11:05,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-14 02:11:05,112 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) [2021-07-14 02:11:05,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-14 02:11:05,113 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2021-07-14 02:11:05,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-14 02:11:05,113 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-14 02:11:05,113 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) [2021-07-14 02:11:05,113 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-14 02:11:05,113 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-14 02:11:05,113 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-14 02:11:05,113 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadWithAssertThread1of1ForFork1 was SAFE (2/2) [2021-07-14 02:11:05,114 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-14 02:11:05,115 INFO L202 PluginConnector]: Adding new model bluetooth-correct05.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.07 02:11:05 BasicIcfg [2021-07-14 02:11:05,115 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-14 02:11:05,116 INFO L168 Benchmark]: Toolchain (without parser) took 5338.46 ms. Allocated memory was 216.0 MB in the beginning and 1.1 GB in the end (delta: 933.2 MB). Free memory was 195.7 MB in the beginning and 856.0 MB in the end (delta: -660.3 MB). Peak memory consumption was 274.0 MB. Max. memory is 8.0 GB. [2021-07-14 02:11:05,116 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.53 ms. Allocated memory is still 216.0 MB. Free memory is still 196.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-14 02:11:05,117 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.53 ms. Allocated memory is still 216.0 MB. Free memory was 195.6 MB in the beginning and 193.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-14 02:11:05,117 INFO L168 Benchmark]: Boogie Preprocessor took 12.93 ms. Allocated memory is still 216.0 MB. Free memory was 193.8 MB in the beginning and 192.8 MB in the end (delta: 966.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-14 02:11:05,117 INFO L168 Benchmark]: RCFGBuilder took 326.57 ms. Allocated memory is still 216.0 MB. Free memory was 192.8 MB in the beginning and 177.6 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-07-14 02:11:05,117 INFO L168 Benchmark]: TraceAbstraction took 4961.72 ms. Allocated memory was 216.0 MB in the beginning and 1.1 GB in the end (delta: 933.2 MB). Free memory was 177.1 MB in the beginning and 856.0 MB in the end (delta: -678.8 MB). Peak memory consumption was 255.1 MB. Max. memory is 8.0 GB. [2021-07-14 02:11:05,118 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 0.53 ms. Allocated memory is still 216.0 MB. Free memory is still 196.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 32.53 ms. Allocated memory is still 216.0 MB. Free memory was 195.6 MB in the beginning and 193.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 12.93 ms. Allocated memory is still 216.0 MB. Free memory was 193.8 MB in the beginning and 192.8 MB in the end (delta: 966.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 326.57 ms. Allocated memory is still 216.0 MB. Free memory was 192.8 MB in the beginning and 177.6 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4961.72 ms. Allocated memory was 216.0 MB in the beginning and 1.1 GB in the end (delta: 933.2 MB). Free memory was 177.1 MB in the beginning and 856.0 MB in the end (delta: -678.8 MB). Peak memory consumption was 255.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 6549, positive: 5508, positive conditional: 5508, positive unconditional: 0, negative: 1041, negative conditional: 1041, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 6070, positive: 5508, positive conditional: 0, positive unconditional: 5508, negative: 562, negative conditional: 0, negative unconditional: 562, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 210, positive: 187, positive conditional: 0, positive unconditional: 187, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 210, positive: 162, positive conditional: 0, positive unconditional: 162, negative: 48, negative conditional: 0, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 48, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 160, positive: 114, positive conditional: 0, positive unconditional: 114, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 6070, positive: 5321, positive conditional: 0, positive unconditional: 5321, negative: 539, negative conditional: 0, negative unconditional: 539, unknown: 210, unknown conditional: 0, unknown unconditional: 210] , Statistics on independence cache: Total cache size (in pairs): 210, Positive cache size: 187, Positive conditional cache size: 0, Positive unconditional cache size: 187, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Independence queries for same thread: 479 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 84881, positive: 67568, positive conditional: 67568, positive unconditional: 0, negative: 17313, negative conditional: 17313, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 77773, positive: 67568, positive conditional: 0, positive unconditional: 67568, negative: 10205, negative conditional: 0, negative unconditional: 10205, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 399, positive: 341, positive conditional: 0, positive unconditional: 341, negative: 58, negative conditional: 0, negative unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 399, positive: 300, positive conditional: 0, positive unconditional: 300, negative: 99, negative conditional: 0, negative unconditional: 99, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 99, positive: 41, positive conditional: 0, positive unconditional: 41, negative: 58, negative conditional: 0, negative unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 202, positive: 89, positive conditional: 0, positive unconditional: 89, negative: 113, negative conditional: 0, negative unconditional: 113, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 77773, positive: 67227, positive conditional: 0, positive unconditional: 67227, negative: 10147, negative conditional: 0, negative unconditional: 10147, unknown: 399, unknown conditional: 0, unknown unconditional: 399] , Statistics on independence cache: Total cache size (in pairs): 399, Positive cache size: 341, Positive conditional cache size: 0, Positive unconditional cache size: 341, Negative cache size: 58, Negative conditional cache size: 0, Negative unconditional cache size: 58, Independence queries for same thread: 7108 - PositiveResult [Line: 38]: 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 10 procedures, 55 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 457.1ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 46.5ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 407.1ms, PartialOrderReductionTime: 395.2ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1211occurred 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 10 procedures, 55 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4388.6ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 52.7ms, AutomataDifference: 1282.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 935.0ms, PartialOrderReductionTime: 933.9ms, HoareTripleCheckerStatistics: 286 SDtfs, 383 SDslu, 379 SDs, 0 SdLazy, 449 SolverSat, 234 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 381.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 293.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=7100occurred in iteration=2, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1250.8ms AutomataMinimizationTime, 7 MinimizatonAttempts, 3689 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 9.6ms SsaConstructionTime, 115.3ms SatisfiabilityAnalysisTime, 619.1ms InterpolantComputationTime, 110 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 103 ConstructedInterpolants, 0 QuantifiedInterpolants, 434 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...