/usr/bin/java -Xmx16000000000 -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-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/spaghetti.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 05:04:58,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 05:04:58,586 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 05:04:58,622 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 05:04:58,622 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 05:04:58,625 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 05:04:58,627 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 05:04:58,632 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 05:04:58,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 05:04:58,638 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 05:04:58,639 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 05:04:58,640 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 05:04:58,641 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 05:04:58,642 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 05:04:58,644 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 05:04:58,645 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 05:04:58,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 05:04:58,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 05:04:58,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 05:04:58,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 05:04:58,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 05:04:58,660 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 05:04:58,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 05:04:58,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 05:04:58,668 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-11 05:04:58,668 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-11 05:04:58,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-11 05:04:58,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-11 05:04:58,670 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-11 05:04:58,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-11 05:04:58,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 05:04:58,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 05:04:58,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 05:04:58,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 05:04:58,675 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 05:04:58,675 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 05:04:58,676 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 05:04:58,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 05:04:58,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 05:04:58,677 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 05:04:58,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 05:04:58,681 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-PN-NoLbe.epf [2021-03-11 05:04:58,715 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 05:04:58,715 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 05:04:58,718 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 05:04:58,718 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 05:04:58,718 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 05:04:58,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 05:04:58,719 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 05:04:58,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 05:04:58,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 05:04:58,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 05:04:58,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 05:04:58,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 05:04:58,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 05:04:58,720 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 05:04:58,720 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 05:04:58,721 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 05:04:58,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 05:04:58,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 05:04:58,721 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 05:04:58,721 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 05:04:58,721 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 05:04:58,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 05:04:58,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 05:04:58,722 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 05:04:58,722 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 05:04:58,722 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 05:04:58,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 05:04:58,722 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-11 05:04:58,723 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 05:04:58,723 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 05:04:59,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 05:04:59,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 05:04:59,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 05:04:59,033 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-11 05:04:59,035 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-11 05:04:59,036 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/spaghetti.wvr.bpl [2021-03-11 05:04:59,036 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/spaghetti.wvr.bpl' [2021-03-11 05:04:59,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 05:04:59,080 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-11 05:04:59,082 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 05:04:59,082 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 05:04:59,082 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 05:04:59,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 05:04:59" (1/1) ... [2021-03-11 05:04:59,098 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 05:04:59" (1/1) ... [2021-03-11 05:04:59,104 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 05:04:59,106 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 05:04:59,106 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 05:04:59,106 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 05:04:59,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 05:04:59" (1/1) ... [2021-03-11 05:04:59,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 05:04:59" (1/1) ... [2021-03-11 05:04:59,114 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 05:04:59" (1/1) ... [2021-03-11 05:04:59,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 05:04:59" (1/1) ... [2021-03-11 05:04:59,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 05:04:59" (1/1) ... [2021-03-11 05:04:59,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 05:04:59" (1/1) ... [2021-03-11 05:04:59,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 05:04:59" (1/1) ... [2021-03-11 05:04:59,121 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 05:04:59,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 05:04:59,122 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 05:04:59,122 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 05:04:59,123 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 05:04:59" (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 [2021-03-11 05:04:59,180 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-11 05:04:59,180 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-11 05:04:59,181 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-11 05:04:59,181 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-11 05:04:59,181 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-11 05:04:59,181 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-11 05:04:59,181 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-11 05:04:59,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 05:04:59,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 05:04:59,182 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-11 05:04:59,182 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-11 05:04:59,182 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-11 05:04:59,182 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-03-11 05:04:59,182 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-03-11 05:04:59,182 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-03-11 05:04:59,183 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 05:04:59,350 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 05:04:59,351 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-11 05:04:59,352 INFO L202 PluginConnector]: Adding new model spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 05:04:59 BoogieIcfgContainer [2021-03-11 05:04:59,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 05:04:59,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 05:04:59,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 05:04:59,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 05:04:59,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 05:04:59" (1/2) ... [2021-03-11 05:04:59,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e3375ae and model type spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 05:04:59, skipping insertion in model container [2021-03-11 05:04:59,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 05:04:59" (2/2) ... [2021-03-11 05:04:59,357 INFO L111 eAbstractionObserver]: Analyzing ICFG spaghetti.wvr.bpl [2021-03-11 05:04:59,361 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 05:04:59,364 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 05:04:59,365 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 05:04:59,405 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-03-11 05:04:59,420 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-11 05:04:59,435 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 05:04:59,436 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 05:04:59,436 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 05:04:59,436 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 05:04:59,436 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 05:04:59,436 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 05:04:59,436 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 05:04:59,436 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 05:04:59,460 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 43 places, 34 transitions, 100 flow [2021-03-11 05:04:59,497 INFO L129 PetriNetUnfolder]: 4/30 cut-off events. [2021-03-11 05:04:59,498 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-11 05:04:59,501 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 30 events. 4/30 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 60 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2021-03-11 05:04:59,501 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 34 transitions, 100 flow [2021-03-11 05:04:59,505 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 28 transitions, 80 flow [2021-03-11 05:04:59,527 INFO L129 PetriNetUnfolder]: 4/27 cut-off events. [2021-03-11 05:04:59,527 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-11 05:04:59,527 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 05:04:59,528 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 05:04:59,528 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 05:04:59,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 05:04:59,532 INFO L82 PathProgramCache]: Analyzing trace with hash -823872310, now seen corresponding path program 1 times [2021-03-11 05:04:59,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 05:04:59,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629703663] [2021-03-11 05:04:59,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 05:04:59,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 05:04:59,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 05:04:59,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 05:04:59,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 05:04:59,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 05:04:59,746 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-11 05:04:59,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 05:04:59,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 05:04:59,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 05:04:59,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 05:04:59,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629703663] [2021-03-11 05:04:59,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 05:04:59,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 05:04:59,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279599844] [2021-03-11 05:04:59,779 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 05:04:59,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 05:04:59,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 05:04:59,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 05:04:59,792 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 34 [2021-03-11 05:04:59,795 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2021-03-11 05:04:59,795 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 05:04:59,795 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 34 [2021-03-11 05:04:59,796 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 05:04:59,912 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([87] L47-->thread4FINAL: Formula: (= v_x_1_12 0) InVars {} OutVars{x_1=v_x_1_12} AuxVars[] AssignedVars[x_1][15], [17#thread1FINALtrue, 49#(and (<= 0 x_1) (<= x_1 0)), 7#thread4FINALtrue, thread4Thread1of1ForFork2InUse, thread2Thread1of1ForFork0InUse, 10#L60true, 28#L26true, thread3Thread1of1ForFork1InUse, 29#L36true, thread1Thread1of1ForFork3InUse]) [2021-03-11 05:04:59,912 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-03-11 05:04:59,912 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-03-11 05:04:59,912 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-03-11 05:04:59,912 INFO L387 tUnfolder$Statistics]: existing Event has 6 ancestors and is cut-off event [2021-03-11 05:04:59,913 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([86] L47-->L49: Formula: (= v_x_1_8 (* v_x_1_9 10)) InVars {x_1=v_x_1_9} OutVars{x_1=v_x_1_8} AuxVars[] AssignedVars[x_1][16], [17#thread1FINALtrue, thread4Thread1of1ForFork2InUse, thread2Thread1of1ForFork0InUse, 10#L60true, 11#L49true, 28#L26true, thread3Thread1of1ForFork1InUse, 29#L36true, thread1Thread1of1ForFork3InUse, 47#true]) [2021-03-11 05:04:59,913 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-03-11 05:04:59,913 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-03-11 05:04:59,913 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-03-11 05:04:59,913 INFO L387 tUnfolder$Statistics]: existing Event has 6 ancestors and is cut-off event [2021-03-11 05:04:59,930 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([87] L47-->thread4FINAL: Formula: (= v_x_1_12 0) InVars {} OutVars{x_1=v_x_1_12} AuxVars[] AssignedVars[x_1][15], [49#(and (<= 0 x_1) (<= x_1 0)), 7#thread4FINALtrue, thread4Thread1of1ForFork2InUse, thread2Thread1of1ForFork0InUse, 10#L60true, 28#L26true, thread3Thread1of1ForFork1InUse, 29#L36true, thread1Thread1of1ForFork3InUse, 15#L17true]) [2021-03-11 05:04:59,931 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-03-11 05:04:59,931 INFO L387 tUnfolder$Statistics]: existing Event has 6 ancestors and is cut-off event [2021-03-11 05:04:59,931 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-03-11 05:04:59,931 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-03-11 05:04:59,931 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([86] L47-->L49: Formula: (= v_x_1_8 (* v_x_1_9 10)) InVars {x_1=v_x_1_9} OutVars{x_1=v_x_1_8} AuxVars[] AssignedVars[x_1][16], [thread4Thread1of1ForFork2InUse, thread2Thread1of1ForFork0InUse, 10#L60true, 11#L49true, 28#L26true, thread3Thread1of1ForFork1InUse, 29#L36true, thread1Thread1of1ForFork3InUse, 47#true, 15#L17true]) [2021-03-11 05:04:59,931 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-03-11 05:04:59,931 INFO L387 tUnfolder$Statistics]: existing Event has 6 ancestors and is cut-off event [2021-03-11 05:04:59,931 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-03-11 05:04:59,931 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-03-11 05:04:59,988 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([87] L47-->thread4FINAL: Formula: (= v_x_1_12 0) InVars {} OutVars{x_1=v_x_1_12} AuxVars[] AssignedVars[x_1][15], [49#(and (<= 0 x_1) (<= x_1 0)), 34#L18true, 7#thread4FINALtrue, thread4Thread1of1ForFork2InUse, thread2Thread1of1ForFork0InUse, 10#L60true, 28#L26true, thread3Thread1of1ForFork1InUse, 29#L36true, thread1Thread1of1ForFork3InUse]) [2021-03-11 05:04:59,988 INFO L384 tUnfolder$Statistics]: this new event has 10 ancestors and is cut-off event [2021-03-11 05:04:59,988 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-03-11 05:04:59,988 INFO L387 tUnfolder$Statistics]: existing Event has 7 ancestors and is cut-off event [2021-03-11 05:04:59,988 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-03-11 05:04:59,989 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([86] L47-->L49: Formula: (= v_x_1_8 (* v_x_1_9 10)) InVars {x_1=v_x_1_9} OutVars{x_1=v_x_1_8} AuxVars[] AssignedVars[x_1][16], [34#L18true, thread4Thread1of1ForFork2InUse, thread2Thread1of1ForFork0InUse, 10#L60true, 11#L49true, 28#L26true, thread3Thread1of1ForFork1InUse, 29#L36true, thread1Thread1of1ForFork3InUse, 47#true]) [2021-03-11 05:04:59,989 INFO L384 tUnfolder$Statistics]: this new event has 10 ancestors and is cut-off event [2021-03-11 05:04:59,989 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-03-11 05:04:59,989 INFO L387 tUnfolder$Statistics]: existing Event has 7 ancestors and is cut-off event [2021-03-11 05:04:59,989 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-03-11 05:05:00,076 INFO L129 PetriNetUnfolder]: 837/1304 cut-off events. [2021-03-11 05:05:00,076 INFO L130 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2021-03-11 05:05:00,082 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2473 conditions, 1304 events. 837/1304 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 6618 event pairs, 250 based on Foata normal form. 1/935 useless extension candidates. Maximal degree in co-relation 2448. Up to 627 conditions per place. [2021-03-11 05:05:00,093 INFO L132 encePairwiseOnDemand]: 25/34 looper letters, 29 selfloop transitions, 10 changer transitions 4/56 dead transitions. [2021-03-11 05:05:00,093 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 56 transitions, 222 flow [2021-03-11 05:05:00,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 05:05:00,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 05:05:00,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2021-03-11 05:05:00,103 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8529411764705882 [2021-03-11 05:05:00,103 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 116 transitions. [2021-03-11 05:05:00,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 116 transitions. [2021-03-11 05:05:00,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 05:05:00,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 116 transitions. [2021-03-11 05:05:00,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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) [2021-03-11 05:05:00,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 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) [2021-03-11 05:05:00,111 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 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) [2021-03-11 05:05:00,112 INFO L185 Difference]: Start difference. First operand has 37 places, 28 transitions, 80 flow. Second operand 4 states and 116 transitions. [2021-03-11 05:05:00,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 56 transitions, 222 flow [2021-03-11 05:05:00,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 56 transitions, 206 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-03-11 05:05:00,120 INFO L241 Difference]: Finished difference. Result has 35 places, 38 transitions, 142 flow [2021-03-11 05:05:00,122 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=35, PETRI_TRANSITIONS=38} [2021-03-11 05:05:00,122 INFO L335 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2021-03-11 05:05:00,123 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 38 transitions, 142 flow [2021-03-11 05:05:00,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2021-03-11 05:05:00,123 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 05:05:00,123 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 05:05:00,123 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 05:05:00,124 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 05:05:00,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 05:05:00,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1542987992, now seen corresponding path program 2 times [2021-03-11 05:05:00,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 05:05:00,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643825491] [2021-03-11 05:05:00,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 05:05:00,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 05:05:00,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 05:05:00,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 05:05:00,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 05:05:00,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 05:05:00,177 INFO L142 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-03-11 05:05:00,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 05:05:00,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 05:05:00,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 05:05:00,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 05:05:00,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643825491] [2021-03-11 05:05:00,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 05:05:00,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 05:05:00,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071975063] [2021-03-11 05:05:00,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 05:05:00,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 05:05:00,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 05:05:00,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 05:05:00,195 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 34 [2021-03-11 05:05:00,195 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 38 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2021-03-11 05:05:00,195 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 05:05:00,195 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 34 [2021-03-11 05:05:00,195 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 05:05:00,300 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([86] L47-->L49: Formula: (= v_x_1_8 (* v_x_1_9 10)) InVars {x_1=v_x_1_9} OutVars{x_1=v_x_1_8} AuxVars[] AssignedVars[x_1][27], [17#thread1FINALtrue, Black: 49#(and (<= 0 x_1) (<= x_1 0)), Black: 52#(and (<= 0 x_1) (< x_0 (+ x_1 1)) (<= x_1 x_0) (<= x_1 0)), 10#L60true, 11#L49true, 60#(and (<= x_0 0) (<= 0 x_0)), 28#L26true, 29#L36true, 47#true]) [2021-03-11 05:05:00,300 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-03-11 05:05:00,300 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-03-11 05:05:00,300 INFO L387 tUnfolder$Statistics]: existing Event has 6 ancestors and is cut-off event [2021-03-11 05:05:00,300 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-03-11 05:05:00,300 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([87] L47-->thread4FINAL: Formula: (= v_x_1_12 0) InVars {} OutVars{x_1=v_x_1_12} AuxVars[] AssignedVars[x_1][29], [49#(and (<= 0 x_1) (<= x_1 0)), 17#thread1FINALtrue, 7#thread4FINALtrue, Black: 52#(and (<= 0 x_1) (< x_0 (+ x_1 1)) (<= x_1 x_0) (<= x_1 0)), Black: 47#true, 10#L60true, 28#L26true, 29#L36true, 63#(and (<= x_0 x_1) (<= x_0 0) (<= 0 x_0) (< x_1 (+ x_0 1)))]) [2021-03-11 05:05:00,301 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-03-11 05:05:00,301 INFO L387 tUnfolder$Statistics]: existing Event has 6 ancestors and is cut-off event [2021-03-11 05:05:00,301 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-03-11 05:05:00,301 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-03-11 05:05:00,309 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([86] L47-->L49: Formula: (= v_x_1_8 (* v_x_1_9 10)) InVars {x_1=v_x_1_9} OutVars{x_1=v_x_1_8} AuxVars[] AssignedVars[x_1][26], [Black: 49#(and (<= 0 x_1) (<= x_1 0)), Black: 52#(and (<= 0 x_1) (< x_0 (+ x_1 1)) (<= x_1 x_0) (<= x_1 0)), 58#true, 10#L60true, 11#L49true, 28#L26true, 29#L36true, 15#L17true, 47#true]) [2021-03-11 05:05:00,309 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-03-11 05:05:00,309 INFO L387 tUnfolder$Statistics]: existing Event has 6 ancestors and is cut-off event [2021-03-11 05:05:00,309 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-03-11 05:05:00,310 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-03-11 05:05:00,310 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([87] L47-->thread4FINAL: Formula: (= v_x_1_12 0) InVars {} OutVars{x_1=v_x_1_12} AuxVars[] AssignedVars[x_1][28], [49#(and (<= 0 x_1) (<= x_1 0)), 7#thread4FINALtrue, Black: 52#(and (<= 0 x_1) (< x_0 (+ x_1 1)) (<= x_1 x_0) (<= x_1 0)), Black: 47#true, 10#L60true, 58#true, 28#L26true, 29#L36true, 15#L17true]) [2021-03-11 05:05:00,310 INFO L384 tUnfolder$Statistics]: this new event has 9 ancestors and is cut-off event [2021-03-11 05:05:00,310 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-03-11 05:05:00,310 INFO L387 tUnfolder$Statistics]: existing Event has 6 ancestors and is cut-off event [2021-03-11 05:05:00,310 INFO L387 tUnfolder$Statistics]: existing Event has 8 ancestors and is cut-off event [2021-03-11 05:05:00,334 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([86] L47-->L49: Formula: (= v_x_1_8 (* v_x_1_9 10)) InVars {x_1=v_x_1_9} OutVars{x_1=v_x_1_8} AuxVars[] AssignedVars[x_1][26], [34#L18true, Black: 49#(and (<= 0 x_1) (<= x_1 0)), Black: 52#(and (<= 0 x_1) (< x_0 (+ x_1 1)) (<= x_1 x_0) (<= x_1 0)), 58#true, 10#L60true, 11#L49true, 28#L26true, 29#L36true, 47#true]) [2021-03-11 05:05:00,335 INFO L384 tUnfolder$Statistics]: this new event has 10 ancestors and is cut-off event [2021-03-11 05:05:00,335 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-03-11 05:05:00,335 INFO L387 tUnfolder$Statistics]: existing Event has 7 ancestors and is cut-off event [2021-03-11 05:05:00,335 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-03-11 05:05:00,335 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([87] L47-->thread4FINAL: Formula: (= v_x_1_12 0) InVars {} OutVars{x_1=v_x_1_12} AuxVars[] AssignedVars[x_1][28], [49#(and (<= 0 x_1) (<= x_1 0)), 34#L18true, 7#thread4FINALtrue, Black: 52#(and (<= 0 x_1) (< x_0 (+ x_1 1)) (<= x_1 x_0) (<= x_1 0)), Black: 47#true, 58#true, 10#L60true, 28#L26true, 29#L36true]) [2021-03-11 05:05:00,335 INFO L384 tUnfolder$Statistics]: this new event has 10 ancestors and is cut-off event [2021-03-11 05:05:00,336 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-03-11 05:05:00,336 INFO L387 tUnfolder$Statistics]: existing Event has 7 ancestors and is cut-off event [2021-03-11 05:05:00,336 INFO L387 tUnfolder$Statistics]: existing Event has 9 ancestors and is cut-off event [2021-03-11 05:05:00,393 INFO L129 PetriNetUnfolder]: 999/1627 cut-off events. [2021-03-11 05:05:00,393 INFO L130 PetriNetUnfolder]: For 790/865 co-relation queries the response was YES. [2021-03-11 05:05:00,396 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4055 conditions, 1627 events. 999/1627 cut-off events. For 790/865 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 9449 event pairs, 228 based on Foata normal form. 2/1605 useless extension candidates. Maximal degree in co-relation 3972. Up to 753 conditions per place. [2021-03-11 05:05:00,397 INFO L132 encePairwiseOnDemand]: 25/34 looper letters, 0 selfloop transitions, 0 changer transitions 72/72 dead transitions. [2021-03-11 05:05:00,397 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 72 transitions, 396 flow [2021-03-11 05:05:00,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 05:05:00,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 05:05:00,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2021-03-11 05:05:00,400 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8455882352941176 [2021-03-11 05:05:00,400 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 115 transitions. [2021-03-11 05:05:00,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 115 transitions. [2021-03-11 05:05:00,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 05:05:00,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 115 transitions. [2021-03-11 05:05:00,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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) [2021-03-11 05:05:00,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 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) [2021-03-11 05:05:00,402 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 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) [2021-03-11 05:05:00,402 INFO L185 Difference]: Start difference. First operand has 35 places, 38 transitions, 142 flow. Second operand 4 states and 115 transitions. [2021-03-11 05:05:00,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 72 transitions, 396 flow [2021-03-11 05:05:00,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 72 transitions, 396 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-11 05:05:00,405 INFO L241 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2021-03-11 05:05:00,405 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2021-03-11 05:05:00,406 INFO L335 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2021-03-11 05:05:00,406 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2021-03-11 05:05:00,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2021-03-11 05:05:00,406 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 05:05:00,410 INFO L202 PluginConnector]: Adding new model spaghetti.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 05:05:00 BasicIcfg [2021-03-11 05:05:00,410 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 05:05:00,411 INFO L168 Benchmark]: Toolchain (without parser) took 1334.56 ms. Allocated memory was 255.9 MB in the beginning and 348.1 MB in the end (delta: 92.3 MB). Free memory was 236.6 MB in the beginning and 320.0 MB in the end (delta: -83.3 MB). Peak memory consumption was 63.8 MB. Max. memory is 16.0 GB. [2021-03-11 05:05:00,412 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 05:05:00,412 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.30 ms. Allocated memory is still 255.9 MB. Free memory was 236.1 MB in the beginning and 234.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 05:05:00,413 INFO L168 Benchmark]: Boogie Preprocessor took 15.00 ms. Allocated memory is still 255.9 MB. Free memory was 234.7 MB in the beginning and 233.7 MB in the end (delta: 959.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 05:05:00,413 INFO L168 Benchmark]: RCFGBuilder took 230.08 ms. Allocated memory is still 255.9 MB. Free memory was 233.7 MB in the beginning and 237.2 MB in the end (delta: -3.5 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.0 GB. [2021-03-11 05:05:00,414 INFO L168 Benchmark]: TraceAbstraction took 1057.38 ms. Allocated memory was 255.9 MB in the beginning and 348.1 MB in the end (delta: 92.3 MB). Free memory was 236.7 MB in the beginning and 320.0 MB in the end (delta: -83.3 MB). Peak memory consumption was 62.4 MB. Max. memory is 16.0 GB. [2021-03-11 05:05:00,416 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.30 ms. Allocated memory is still 255.9 MB. Free memory was 236.1 MB in the beginning and 234.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 15.00 ms. Allocated memory is still 255.9 MB. Free memory was 234.7 MB in the beginning and 233.7 MB in the end (delta: 959.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 230.08 ms. Allocated memory is still 255.9 MB. Free memory was 233.7 MB in the beginning and 237.2 MB in the end (delta: -3.5 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1057.38 ms. Allocated memory was 255.9 MB in the beginning and 348.1 MB in the end (delta: 92.3 MB). Free memory was 236.7 MB in the beginning and 320.0 MB in the end (delta: -83.3 MB). Peak memory consumption was 62.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 66]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 21.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 974.6ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 547.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 68.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 60 SDtfs, 13 SDslu, 14 SDs, 0 SdLazy, 104 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 99.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 62.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=142occurred in iteration=1, InterpolantAutomatonStates: 8, 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: TRACE_CHECK: 12.7ms SsaConstructionTime, 21.7ms SatisfiabilityAnalysisTime, 201.0ms InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 190 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...