/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-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/min-max-1.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 09:32:56,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 09:32:56,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 09:32:56,332 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 09:32:56,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 09:32:56,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 09:32:56,339 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 09:32:56,345 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 09:32:56,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 09:32:56,353 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 09:32:56,354 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 09:32:56,355 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 09:32:56,356 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 09:32:56,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 09:32:56,359 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 09:32:56,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 09:32:56,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 09:32:56,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 09:32:56,367 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 09:32:56,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 09:32:56,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 09:32:56,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 09:32:56,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 09:32:56,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 09:32:56,384 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 09:32:56,386 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 09:32:56,387 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 09:32:56,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 09:32:56,388 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 09:32:56,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 09:32:56,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 09:32:56,389 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 09:32:56,390 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 09:32:56,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 09:32:56,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 09:32:56,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 09:32:56,393 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-RepeatedVariableLbe.epf [2021-03-25 09:32:56,428 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 09:32:56,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 09:32:56,430 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 09:32:56,430 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 09:32:56,430 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 09:32:56,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 09:32:56,430 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 09:32:56,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 09:32:56,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 09:32:56,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 09:32:56,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 09:32:56,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 09:32:56,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 09:32:56,431 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 09:32:56,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 09:32:56,432 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 09:32:56,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 09:32:56,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 09:32:56,432 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 09:32:56,432 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 09:32:56,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 09:32:56,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 09:32:56,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 09:32:56,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 09:32:56,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 09:32:56,433 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 09:32:56,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 09:32:56,433 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 09:32:56,433 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 09:32:56,434 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 09:32:56,434 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 09:32:56,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 09:32:56,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 09:32:56,758 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 09:32:56,759 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 09:32:56,760 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 09:32:56,762 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/min-max-1.wvr.bpl [2021-03-25 09:32:56,762 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/min-max-1.wvr.bpl' [2021-03-25 09:32:56,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 09:32:56,823 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 09:32:56,824 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 09:32:56,824 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 09:32:56,824 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 09:32:56,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:32:56" (1/1) ... [2021-03-25 09:32:56,842 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:32:56" (1/1) ... [2021-03-25 09:32:56,848 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 09:32:56,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 09:32:56,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 09:32:56,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 09:32:56,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:32:56" (1/1) ... [2021-03-25 09:32:56,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:32:56" (1/1) ... [2021-03-25 09:32:56,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:32:56" (1/1) ... [2021-03-25 09:32:56,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:32:56" (1/1) ... [2021-03-25 09:32:56,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:32:56" (1/1) ... [2021-03-25 09:32:56,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:32:56" (1/1) ... [2021-03-25 09:32:56,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:32:56" (1/1) ... [2021-03-25 09:32:56,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 09:32:56,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 09:32:56,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 09:32:56,875 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 09:32:56,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:32:56" (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 [2021-03-25 09:32:56,943 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-25 09:32:56,943 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-25 09:32:56,943 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-25 09:32:56,943 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-25 09:32:56,943 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-25 09:32:56,944 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-25 09:32:56,944 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 09:32:56,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 09:32:56,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 09:32:56,945 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-25 09:32:56,945 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-25 09:32:56,945 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-25 09:32:56,946 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 09:32:57,169 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 09:32:57,169 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-25 09:32:57,170 INFO L202 PluginConnector]: Adding new model min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 09:32:57 BoogieIcfgContainer [2021-03-25 09:32:57,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 09:32:57,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 09:32:57,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 09:32:57,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 09:32:57,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:32:56" (1/2) ... [2021-03-25 09:32:57,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a157249 and model type min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 09:32:57, skipping insertion in model container [2021-03-25 09:32:57,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 09:32:57" (2/2) ... [2021-03-25 09:32:57,189 INFO L111 eAbstractionObserver]: Analyzing ICFG min-max-1.wvr.bpl [2021-03-25 09:32:57,194 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 09:32:57,198 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 09:32:57,198 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 09:32:57,234 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-03-25 09:32:57,265 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 09:32:57,299 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 09:32:57,299 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 09:32:57,300 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 09:32:57,300 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 09:32:57,300 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 09:32:57,300 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 09:32:57,300 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 09:32:57,300 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 09:32:57,309 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 30 transitions, 84 flow [2021-03-25 09:32:57,347 INFO L129 PetriNetUnfolder]: 2/27 cut-off events. [2021-03-25 09:32:57,348 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 09:32:57,351 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 27 events. 2/27 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 45 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2021-03-25 09:32:57,351 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 30 transitions, 84 flow [2021-03-25 09:32:57,355 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 25 transitions, 68 flow [2021-03-25 09:32:57,356 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:32:57,372 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 33 places, 25 transitions, 68 flow [2021-03-25 09:32:57,375 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 33 places, 25 transitions, 68 flow [2021-03-25 09:32:57,376 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 33 places, 25 transitions, 68 flow [2021-03-25 09:32:57,386 INFO L129 PetriNetUnfolder]: 2/25 cut-off events. [2021-03-25 09:32:57,387 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 09:32:57,388 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 25 events. 2/25 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 44 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2021-03-25 09:32:57,390 INFO L142 LiptonReduction]: Number of co-enabled transitions 218 [2021-03-25 09:32:57,773 INFO L154 LiptonReduction]: Checked pairs total: 114 [2021-03-25 09:32:57,773 INFO L156 LiptonReduction]: Total number of compositions: 8 [2021-03-25 09:32:57,776 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 421 [2021-03-25 09:32:57,796 INFO L129 PetriNetUnfolder]: 2/16 cut-off events. [2021-03-25 09:32:57,797 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 09:32:57,797 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:32:57,798 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:32:57,798 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:32:57,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:32:57,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1416786500, now seen corresponding path program 1 times [2021-03-25 09:32:57,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:32:57,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195291916] [2021-03-25 09:32:57,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:32:57,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:32:57,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:32:57,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:32:57,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:32:57,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:32:57,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:32:57,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195291916] [2021-03-25 09:32:57,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:32:57,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 09:32:57,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722964617] [2021-03-25 09:32:57,961 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 09:32:57,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:32:57,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 09:32:57,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 09:32:57,974 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 38 [2021-03-25 09:32:57,976 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 52 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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) [2021-03-25 09:32:57,976 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:32:57,976 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 38 [2021-03-25 09:32:57,977 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:32:58,058 INFO L129 PetriNetUnfolder]: 32/88 cut-off events. [2021-03-25 09:32:58,059 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2021-03-25 09:32:58,061 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 88 events. 32/88 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 291 event pairs, 4 based on Foata normal form. 1/88 useless extension candidates. Maximal degree in co-relation 140. Up to 33 conditions per place. [2021-03-25 09:32:58,064 INFO L132 encePairwiseOnDemand]: 33/38 looper letters, 6 selfloop transitions, 3 changer transitions 7/26 dead transitions. [2021-03-25 09:32:58,064 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 26 transitions, 102 flow [2021-03-25 09:32:58,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 09:32:58,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 09:32:58,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2021-03-25 09:32:58,076 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7210526315789474 [2021-03-25 09:32:58,076 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 137 transitions. [2021-03-25 09:32:58,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 137 transitions. [2021-03-25 09:32:58,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:32:58,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 137 transitions. [2021-03-25 09:32:58,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 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) [2021-03-25 09:32:58,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 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) [2021-03-25 09:32:58,097 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 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) [2021-03-25 09:32:58,099 INFO L185 Difference]: Start difference. First operand has 25 places, 17 transitions, 52 flow. Second operand 5 states and 137 transitions. [2021-03-25 09:32:58,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 26 transitions, 102 flow [2021-03-25 09:32:58,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 26 transitions, 90 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-03-25 09:32:58,105 INFO L241 Difference]: Finished difference. Result has 26 places, 19 transitions, 65 flow [2021-03-25 09:32:58,107 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=65, PETRI_PLACES=26, PETRI_TRANSITIONS=19} [2021-03-25 09:32:58,107 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 1 predicate places. [2021-03-25 09:32:58,108 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:32:58,108 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 26 places, 19 transitions, 65 flow [2021-03-25 09:32:58,108 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 26 places, 19 transitions, 65 flow [2021-03-25 09:32:58,109 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 19 transitions, 65 flow [2021-03-25 09:32:58,116 INFO L129 PetriNetUnfolder]: 7/30 cut-off events. [2021-03-25 09:32:58,116 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 09:32:58,117 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 30 events. 7/30 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 60 event pairs, 1 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 48. Up to 10 conditions per place. [2021-03-25 09:32:58,117 INFO L142 LiptonReduction]: Number of co-enabled transitions 82 [2021-03-25 09:32:58,120 INFO L154 LiptonReduction]: Checked pairs total: 7 [2021-03-25 09:32:58,120 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 09:32:58,121 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 14 [2021-03-25 09:32:58,122 INFO L480 AbstractCegarLoop]: Abstraction has has 24 places, 19 transitions, 65 flow [2021-03-25 09:32:58,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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) [2021-03-25 09:32:58,122 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:32:58,122 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:32:58,122 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 09:32:58,123 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:32:58,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:32:58,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1144654602, now seen corresponding path program 2 times [2021-03-25 09:32:58,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:32:58,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737675967] [2021-03-25 09:32:58,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:32:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:32:58,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:32:58,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 09:32:58,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:32:58,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:32:58,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:32:58,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:32:58,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:32:58,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737675967] [2021-03-25 09:32:58,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:32:58,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 09:32:58,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164414590] [2021-03-25 09:32:58,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 09:32:58,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:32:58,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 09:32:58,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 09:32:58,195 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 38 [2021-03-25 09:32:58,195 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 19 transitions, 65 flow. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 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) [2021-03-25 09:32:58,196 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:32:58,196 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 38 [2021-03-25 09:32:58,196 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:32:58,288 INFO L129 PetriNetUnfolder]: 34/94 cut-off events. [2021-03-25 09:32:58,288 INFO L130 PetriNetUnfolder]: For 35/41 co-relation queries the response was YES. [2021-03-25 09:32:58,291 INFO L84 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 94 events. 34/94 cut-off events. For 35/41 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 327 event pairs, 0 based on Foata normal form. 3/96 useless extension candidates. Maximal degree in co-relation 181. Up to 21 conditions per place. [2021-03-25 09:32:58,293 INFO L132 encePairwiseOnDemand]: 33/38 looper letters, 13 selfloop transitions, 4 changer transitions 11/38 dead transitions. [2021-03-25 09:32:58,293 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 38 transitions, 189 flow [2021-03-25 09:32:58,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 09:32:58,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 09:32:58,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 197 transitions. [2021-03-25 09:32:58,299 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7406015037593985 [2021-03-25 09:32:58,299 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 197 transitions. [2021-03-25 09:32:58,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 197 transitions. [2021-03-25 09:32:58,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:32:58,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 197 transitions. [2021-03-25 09:32:58,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 28.142857142857142) internal successors, (197), 7 states have internal predecessors, (197), 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) [2021-03-25 09:32:58,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 38.0) internal successors, (304), 8 states have internal predecessors, (304), 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) [2021-03-25 09:32:58,302 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 38.0) internal successors, (304), 8 states have internal predecessors, (304), 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) [2021-03-25 09:32:58,302 INFO L185 Difference]: Start difference. First operand has 24 places, 19 transitions, 65 flow. Second operand 7 states and 197 transitions. [2021-03-25 09:32:58,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 38 transitions, 189 flow [2021-03-25 09:32:58,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 38 transitions, 166 flow, removed 10 selfloop flow, removed 3 redundant places. [2021-03-25 09:32:58,306 INFO L241 Difference]: Finished difference. Result has 31 places, 22 transitions, 87 flow [2021-03-25 09:32:58,306 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=87, PETRI_PLACES=31, PETRI_TRANSITIONS=22} [2021-03-25 09:32:58,307 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 6 predicate places. [2021-03-25 09:32:58,307 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:32:58,307 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 22 transitions, 87 flow [2021-03-25 09:32:58,307 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 22 transitions, 87 flow [2021-03-25 09:32:58,308 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 28 places, 22 transitions, 87 flow [2021-03-25 09:32:58,315 INFO L129 PetriNetUnfolder]: 13/54 cut-off events. [2021-03-25 09:32:58,316 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2021-03-25 09:32:58,316 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 54 events. 13/54 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 161 event pairs, 1 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 95. Up to 16 conditions per place. [2021-03-25 09:32:58,317 INFO L142 LiptonReduction]: Number of co-enabled transitions 110 [2021-03-25 09:32:58,319 INFO L154 LiptonReduction]: Checked pairs total: 16 [2021-03-25 09:32:58,319 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 09:32:58,319 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 12 [2021-03-25 09:32:58,320 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 87 flow [2021-03-25 09:32:58,320 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 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) [2021-03-25 09:32:58,320 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:32:58,320 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:32:58,320 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 09:32:58,320 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:32:58,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:32:58,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1748934858, now seen corresponding path program 1 times [2021-03-25 09:32:58,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:32:58,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144780357] [2021-03-25 09:32:58,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:32:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:32:58,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:32:58,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 09:32:58,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:32:58,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:32:58,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:32:58,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144780357] [2021-03-25 09:32:58,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:32:58,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 09:32:58,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137317152] [2021-03-25 09:32:58,358 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 09:32:58,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:32:58,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 09:32:58,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 09:32:58,361 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 38 [2021-03-25 09:32:58,362 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2021-03-25 09:32:58,362 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:32:58,362 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 38 [2021-03-25 09:32:58,362 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:32:58,372 INFO L129 PetriNetUnfolder]: 4/28 cut-off events. [2021-03-25 09:32:58,372 INFO L130 PetriNetUnfolder]: For 12/14 co-relation queries the response was YES. [2021-03-25 09:32:58,372 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 28 events. 4/28 cut-off events. For 12/14 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 55 event pairs, 0 based on Foata normal form. 3/31 useless extension candidates. Maximal degree in co-relation 49. Up to 8 conditions per place. [2021-03-25 09:32:58,372 INFO L132 encePairwiseOnDemand]: 36/38 looper letters, 1 selfloop transitions, 1 changer transitions 0/19 dead transitions. [2021-03-25 09:32:58,373 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 19 transitions, 76 flow [2021-03-25 09:32:58,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 09:32:58,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 09:32:58,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2021-03-25 09:32:58,378 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7894736842105263 [2021-03-25 09:32:58,378 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 90 transitions. [2021-03-25 09:32:58,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 90 transitions. [2021-03-25 09:32:58,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:32:58,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 90 transitions. [2021-03-25 09:32:58,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2021-03-25 09:32:58,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2021-03-25 09:32:58,381 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2021-03-25 09:32:58,381 INFO L185 Difference]: Start difference. First operand has 28 places, 22 transitions, 87 flow. Second operand 3 states and 90 transitions. [2021-03-25 09:32:58,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 19 transitions, 76 flow [2021-03-25 09:32:58,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 19 transitions, 70 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-03-25 09:32:58,383 INFO L241 Difference]: Finished difference. Result has 26 places, 19 transitions, 68 flow [2021-03-25 09:32:58,383 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=26, PETRI_TRANSITIONS=19} [2021-03-25 09:32:58,383 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 1 predicate places. [2021-03-25 09:32:58,384 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:32:58,384 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 26 places, 19 transitions, 68 flow [2021-03-25 09:32:58,387 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 26 places, 19 transitions, 68 flow [2021-03-25 09:32:58,388 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 26 places, 19 transitions, 68 flow [2021-03-25 09:32:58,396 INFO L129 PetriNetUnfolder]: 3/30 cut-off events. [2021-03-25 09:32:58,396 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 09:32:58,397 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 30 events. 3/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 60 event pairs, 1 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 44. Up to 8 conditions per place. [2021-03-25 09:32:58,397 INFO L142 LiptonReduction]: Number of co-enabled transitions 76 [2021-03-25 09:32:58,460 INFO L154 LiptonReduction]: Checked pairs total: 26 [2021-03-25 09:32:58,461 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 09:32:58,462 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 77 [2021-03-25 09:32:58,464 INFO L480 AbstractCegarLoop]: Abstraction has has 24 places, 17 transitions, 64 flow [2021-03-25 09:32:58,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2021-03-25 09:32:58,464 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:32:58,464 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:32:58,465 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 09:32:58,465 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:32:58,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:32:58,466 INFO L82 PathProgramCache]: Analyzing trace with hash 277322453, now seen corresponding path program 1 times [2021-03-25 09:32:58,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:32:58,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728158226] [2021-03-25 09:32:58,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:32:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:32:58,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:32:58,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 09:32:58,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:32:58,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:32:58,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:32:58,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728158226] [2021-03-25 09:32:58,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:32:58,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 09:32:58,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507265575] [2021-03-25 09:32:58,514 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 09:32:58,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:32:58,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 09:32:58,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 09:32:58,515 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 41 [2021-03-25 09:32:58,516 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 17 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2021-03-25 09:32:58,516 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:32:58,516 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 41 [2021-03-25 09:32:58,516 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:32:58,523 INFO L129 PetriNetUnfolder]: 1/13 cut-off events. [2021-03-25 09:32:58,523 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 09:32:58,525 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 13 events. 1/13 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 15 event pairs, 0 based on Foata normal form. 2/15 useless extension candidates. Maximal degree in co-relation 21. Up to 5 conditions per place. [2021-03-25 09:32:58,525 INFO L132 encePairwiseOnDemand]: 39/41 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2021-03-25 09:32:58,525 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 12 transitions, 48 flow [2021-03-25 09:32:58,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 09:32:58,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 09:32:58,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2021-03-25 09:32:58,529 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8048780487804879 [2021-03-25 09:32:58,530 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 99 transitions. [2021-03-25 09:32:58,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 99 transitions. [2021-03-25 09:32:58,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:32:58,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 99 transitions. [2021-03-25 09:32:58,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2021-03-25 09:32:58,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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) [2021-03-25 09:32:58,531 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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) [2021-03-25 09:32:58,531 INFO L185 Difference]: Start difference. First operand has 24 places, 17 transitions, 64 flow. Second operand 3 states and 99 transitions. [2021-03-25 09:32:58,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 12 transitions, 48 flow [2021-03-25 09:32:58,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 12 transitions, 45 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 09:32:58,532 INFO L241 Difference]: Finished difference. Result has 20 places, 0 transitions, 0 flow [2021-03-25 09:32:58,532 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=20, PETRI_TRANSITIONS=0} [2021-03-25 09:32:58,532 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, -5 predicate places. [2021-03-25 09:32:58,532 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:32:58,532 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 20 places, 0 transitions, 0 flow [2021-03-25 09:32:58,543 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 20 places, 0 transitions, 0 flow [2021-03-25 09:32:58,543 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 09:32:58,543 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 09:32:58,544 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 09:32:58,544 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-25 09:32:58,544 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 09:32:58,544 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 09:32:58,544 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 09:32:58,544 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 12 [2021-03-25 09:32:58,545 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 09:32:58,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2021-03-25 09:32:58,545 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 09:32:58,548 INFO L202 PluginConnector]: Adding new model min-max-1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 09:32:58 BasicIcfg [2021-03-25 09:32:58,548 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 09:32:58,549 INFO L168 Benchmark]: Toolchain (without parser) took 1726.05 ms. Allocated memory was 255.9 MB in the beginning and 350.2 MB in the end (delta: 94.4 MB). Free memory was 236.5 MB in the beginning and 334.4 MB in the end (delta: -97.9 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 09:32:58,550 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.56 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.6 MB in the end (delta: 80.7 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 09:32:58,550 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.05 ms. Allocated memory is still 255.9 MB. Free memory was 236.4 MB in the beginning and 234.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 09:32:58,550 INFO L168 Benchmark]: Boogie Preprocessor took 22.60 ms. Allocated memory is still 255.9 MB. Free memory was 234.9 MB in the beginning and 234.0 MB in the end (delta: 944.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 09:32:58,551 INFO L168 Benchmark]: RCFGBuilder took 296.00 ms. Allocated memory is still 255.9 MB. Free memory was 233.9 MB in the beginning and 237.0 MB in the end (delta: -3.1 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.0 GB. [2021-03-25 09:32:58,551 INFO L168 Benchmark]: TraceAbstraction took 1376.65 ms. Allocated memory was 255.9 MB in the beginning and 350.2 MB in the end (delta: 94.4 MB). Free memory was 236.6 MB in the beginning and 334.4 MB in the end (delta: -97.9 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 09:32:58,553 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 0.56 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.6 MB in the end (delta: 80.7 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 25.05 ms. Allocated memory is still 255.9 MB. Free memory was 236.4 MB in the beginning and 234.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 22.60 ms. Allocated memory is still 255.9 MB. Free memory was 234.9 MB in the beginning and 234.0 MB in the end (delta: 944.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 296.00 ms. Allocated memory is still 255.9 MB. Free memory was 233.9 MB in the beginning and 237.0 MB in the end (delta: -3.1 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1376.65 ms. Allocated memory was 255.9 MB in the beginning and 350.2 MB in the end (delta: 94.4 MB). Free memory was 236.6 MB in the beginning and 334.4 MB in the end (delta: -97.9 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 398.5ms, 33 PlacesBefore, 25 PlacesAfterwards, 25 TransitionsBefore, 17 TransitionsAfterwards, 218 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 7 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 8 TotalNumberOfCompositions, 114 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 85, positive: 82, positive conditional: 0, positive unconditional: 82, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 74, positive: 71, positive conditional: 0, positive unconditional: 71, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 74, positive: 71, positive conditional: 0, positive unconditional: 71, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 85, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 74, unknown conditional: 0, unknown unconditional: 74] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.3ms, 26 PlacesBefore, 24 PlacesAfterwards, 19 TransitionsBefore, 19 TransitionsAfterwards, 82 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 7 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 3, Positive conditional cache size: 0, Positive unconditional cache size: 3, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.4ms, 31 PlacesBefore, 28 PlacesAfterwards, 22 TransitionsBefore, 22 TransitionsAfterwards, 110 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 16 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 14, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 6, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 6, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 14, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 6, unknown conditional: 0, unknown unconditional: 6] , Statistics on independence cache: Total cache size (in pairs): 10, Positive cache size: 8, Positive conditional cache size: 0, Positive unconditional cache size: 8, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 73.6ms, 26 PlacesBefore, 24 PlacesAfterwards, 19 TransitionsBefore, 17 TransitionsAfterwards, 76 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 26 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 26, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 9, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 9, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 26, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 9, unknown conditional: 0, unknown unconditional: 9] , Statistics on independence cache: Total cache size (in pairs): 1, Positive cache size: 1, Positive conditional cache size: 0, Positive unconditional cache size: 1, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.9ms, 20 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 1, Positive cache size: 1, Positive conditional cache size: 0, Positive unconditional cache size: 1, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 58]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 15.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1266.4ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 292.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 480.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 16 SDtfs, 14 SDslu, 8 SDs, 0 SdLazy, 48 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 42.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 42.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=2, InterpolantAutomatonStates: 18, 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: 8.9ms SsaConstructionTime, 52.1ms SatisfiabilityAnalysisTime, 159.3ms InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 110 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 2/2 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...