/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/bakery-2.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 09:28:38,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 09:28:38,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 09:28:38,905 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 09:28:38,906 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 09:28:38,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 09:28:38,910 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 09:28:38,915 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 09:28:38,917 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 09:28:38,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 09:28:38,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 09:28:38,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 09:28:38,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 09:28:38,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 09:28:38,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 09:28:38,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 09:28:38,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 09:28:38,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 09:28:38,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 09:28:38,940 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 09:28:38,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 09:28:38,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 09:28:38,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 09:28:38,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 09:28:38,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 09:28:38,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 09:28:38,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 09:28:38,952 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 09:28:38,952 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 09:28:38,953 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 09:28:38,953 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 09:28:38,954 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 09:28:38,955 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 09:28:38,956 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 09:28:38,957 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 09:28:38,957 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 09:28:38,957 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 09:28:38,957 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 09:28:38,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 09:28:38,958 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 09:28:38,959 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 09:28:38,960 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 09:28:39,002 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 09:28:39,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 09:28:39,005 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 09:28:39,005 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 09:28:39,006 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 09:28:39,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 09:28:39,006 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 09:28:39,006 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 09:28:39,006 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 09:28:39,006 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 09:28:39,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 09:28:39,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 09:28:39,007 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 09:28:39,008 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 09:28:39,008 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 09:28:39,008 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 09:28:39,008 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 09:28:39,008 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 09:28:39,008 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 09:28:39,008 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 09:28:39,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 09:28:39,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 09:28:39,009 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 09:28:39,009 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 09:28:39,009 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 09:28:39,009 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 09:28:39,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 09:28:39,010 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 09:28:39,010 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 09:28:39,010 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 09:28:39,010 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 09:28:39,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 09:28:39,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 09:28:39,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 09:28:39,313 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 09:28:39,314 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 09:28:39,315 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-2.wvr.bpl [2021-03-25 09:28:39,324 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-2.wvr.bpl' [2021-03-25 09:28:39,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 09:28:39,353 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 09:28:39,354 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 09:28:39,354 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 09:28:39,354 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 09:28:39,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:28:39" (1/1) ... [2021-03-25 09:28:39,371 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:28:39" (1/1) ... [2021-03-25 09:28:39,378 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 09:28:39,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 09:28:39,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 09:28:39,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 09:28:39,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:28:39" (1/1) ... [2021-03-25 09:28:39,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:28:39" (1/1) ... [2021-03-25 09:28:39,388 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:28:39" (1/1) ... [2021-03-25 09:28:39,388 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:28:39" (1/1) ... [2021-03-25 09:28:39,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:28:39" (1/1) ... [2021-03-25 09:28:39,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:28:39" (1/1) ... [2021-03-25 09:28:39,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:28:39" (1/1) ... [2021-03-25 09:28:39,398 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 09:28:39,399 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 09:28:39,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 09:28:39,399 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 09:28:39,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:28:39" (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 09:28:39,464 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-25 09:28:39,465 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-25 09:28:39,465 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-25 09:28:39,465 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-25 09:28:39,465 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-25 09:28:39,465 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-25 09:28:39,465 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 09:28:39,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 09:28:39,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 09:28:39,466 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 09:28:39,642 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 09:28:39,642 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-25 09:28:39,643 INFO L202 PluginConnector]: Adding new model bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 09:28:39 BoogieIcfgContainer [2021-03-25 09:28:39,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 09:28:39,645 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 09:28:39,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 09:28:39,647 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 09:28:39,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:28:39" (1/2) ... [2021-03-25 09:28:39,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63192863 and model type bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 09:28:39, skipping insertion in model container [2021-03-25 09:28:39,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 09:28:39" (2/2) ... [2021-03-25 09:28:39,649 INFO L111 eAbstractionObserver]: Analyzing ICFG bakery-2.wvr.bpl [2021-03-25 09:28:39,653 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 09:28:39,656 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 09:28:39,656 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 09:28:39,681 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-03-25 09:28:39,695 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-25 09:28:39,712 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 09:28:39,712 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 09:28:39,713 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 09:28:39,713 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 09:28:39,713 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 09:28:39,713 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 09:28:39,713 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 09:28:39,713 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 09:28:39,721 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 78 flow [2021-03-25 09:28:39,742 INFO L129 PetriNetUnfolder]: 0/29 cut-off events. [2021-03-25 09:28:39,742 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 09:28:39,743 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 29 events. 0/29 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 22 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 09:28:39,743 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 78 flow [2021-03-25 09:28:39,746 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 27 transitions, 66 flow [2021-03-25 09:28:39,748 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:28:39,755 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 27 transitions, 66 flow [2021-03-25 09:28:39,757 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 27 transitions, 66 flow [2021-03-25 09:28:39,758 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 27 transitions, 66 flow [2021-03-25 09:28:39,766 INFO L129 PetriNetUnfolder]: 0/27 cut-off events. [2021-03-25 09:28:39,766 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 09:28:39,766 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 27 events. 0/27 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 09:28:39,768 INFO L142 LiptonReduction]: Number of co-enabled transitions 240 [2021-03-25 09:28:39,821 INFO L154 LiptonReduction]: Checked pairs total: 716 [2021-03-25 09:28:39,821 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 09:28:39,823 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 76 [2021-03-25 09:28:39,832 INFO L129 PetriNetUnfolder]: 0/23 cut-off events. [2021-03-25 09:28:39,833 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 09:28:39,833 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:28:39,833 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:28:39,834 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:28:39,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:28:39,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1020421601, now seen corresponding path program 1 times [2021-03-25 09:28:39,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:28:39,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909065387] [2021-03-25 09:28:39,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:28:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:28:40,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:40,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:40,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:40,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:40,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:40,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:40,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:40,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:40,118 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 09:28:40,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:40,134 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 09:28:40,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909065387] [2021-03-25 09:28:40,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:28:40,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 09:28:40,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107623605] [2021-03-25 09:28:40,144 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 09:28:40,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:28:40,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 09:28:40,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-25 09:28:40,164 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 34 [2021-03-25 09:28:40,166 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 60 flow. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 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 09:28:40,166 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:28:40,166 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 34 [2021-03-25 09:28:40,167 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:28:40,270 INFO L129 PetriNetUnfolder]: 1/48 cut-off events. [2021-03-25 09:28:40,270 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-03-25 09:28:40,271 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 48 events. 1/48 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 119 event pairs, 0 based on Foata normal form. 1/48 useless extension candidates. Maximal degree in co-relation 56. Up to 5 conditions per place. [2021-03-25 09:28:40,272 INFO L132 encePairwiseOnDemand]: 28/34 looper letters, 7 selfloop transitions, 7 changer transitions 2/34 dead transitions. [2021-03-25 09:28:40,272 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 34 transitions, 112 flow [2021-03-25 09:28:40,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 09:28:40,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 09:28:40,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 225 transitions. [2021-03-25 09:28:40,288 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8272058823529411 [2021-03-25 09:28:40,289 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 225 transitions. [2021-03-25 09:28:40,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 225 transitions. [2021-03-25 09:28:40,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:28:40,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 225 transitions. [2021-03-25 09:28:40,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 28.125) internal successors, (225), 8 states have internal predecessors, (225), 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 09:28:40,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 34.0) internal successors, (306), 9 states have internal predecessors, (306), 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 09:28:40,300 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 34.0) internal successors, (306), 9 states have internal predecessors, (306), 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 09:28:40,302 INFO L185 Difference]: Start difference. First operand has 31 places, 24 transitions, 60 flow. Second operand 8 states and 225 transitions. [2021-03-25 09:28:40,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 34 transitions, 112 flow [2021-03-25 09:28:40,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 34 transitions, 104 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 09:28:40,307 INFO L241 Difference]: Finished difference. Result has 37 places, 29 transitions, 90 flow [2021-03-25 09:28:40,308 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=90, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2021-03-25 09:28:40,309 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 6 predicate places. [2021-03-25 09:28:40,309 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:28:40,310 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 29 transitions, 90 flow [2021-03-25 09:28:40,310 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 29 transitions, 90 flow [2021-03-25 09:28:40,311 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 29 transitions, 90 flow [2021-03-25 09:28:40,317 INFO L129 PetriNetUnfolder]: 0/41 cut-off events. [2021-03-25 09:28:40,317 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 09:28:40,318 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 41 events. 0/41 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-25 09:28:40,318 INFO L142 LiptonReduction]: Number of co-enabled transitions 194 [2021-03-25 09:28:40,375 INFO L154 LiptonReduction]: Checked pairs total: 576 [2021-03-25 09:28:40,375 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 09:28:40,376 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 67 [2021-03-25 09:28:40,377 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 95 flow [2021-03-25 09:28:40,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 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 09:28:40,378 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:28:40,378 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:28:40,378 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 09:28:40,379 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:28:40,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:28:40,380 INFO L82 PathProgramCache]: Analyzing trace with hash 672930461, now seen corresponding path program 2 times [2021-03-25 09:28:40,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:28:40,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012886401] [2021-03-25 09:28:40,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:28:40,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:28:40,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:40,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:40,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:40,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:40,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:40,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:40,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:40,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:40,454 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 09:28:40,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:40,463 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 09:28:40,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012886401] [2021-03-25 09:28:40,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:28:40,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 09:28:40,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384823749] [2021-03-25 09:28:40,465 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 09:28:40,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:28:40,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 09:28:40,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-25 09:28:40,467 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 37 [2021-03-25 09:28:40,467 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 95 flow. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 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 09:28:40,468 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:28:40,468 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 37 [2021-03-25 09:28:40,468 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:28:40,576 INFO L129 PetriNetUnfolder]: 1/42 cut-off events. [2021-03-25 09:28:40,576 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2021-03-25 09:28:40,577 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 42 events. 1/42 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 90 event pairs, 0 based on Foata normal form. 1/43 useless extension candidates. Maximal degree in co-relation 76. Up to 7 conditions per place. [2021-03-25 09:28:40,577 INFO L132 encePairwiseOnDemand]: 29/37 looper letters, 4 selfloop transitions, 5 changer transitions 5/32 dead transitions. [2021-03-25 09:28:40,577 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 32 transitions, 138 flow [2021-03-25 09:28:40,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 09:28:40,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 09:28:40,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 249 transitions. [2021-03-25 09:28:40,583 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7477477477477478 [2021-03-25 09:28:40,583 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 249 transitions. [2021-03-25 09:28:40,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 249 transitions. [2021-03-25 09:28:40,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:28:40,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 249 transitions. [2021-03-25 09:28:40,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 27.666666666666668) internal successors, (249), 9 states have internal predecessors, (249), 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 09:28:40,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 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 09:28:40,590 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 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 09:28:40,590 INFO L185 Difference]: Start difference. First operand has 35 places, 29 transitions, 95 flow. Second operand 9 states and 249 transitions. [2021-03-25 09:28:40,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 32 transitions, 138 flow [2021-03-25 09:28:40,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 32 transitions, 134 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-03-25 09:28:40,593 INFO L241 Difference]: Finished difference. Result has 43 places, 26 transitions, 90 flow [2021-03-25 09:28:40,593 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=90, PETRI_PLACES=43, PETRI_TRANSITIONS=26} [2021-03-25 09:28:40,595 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 12 predicate places. [2021-03-25 09:28:40,595 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:28:40,595 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 43 places, 26 transitions, 90 flow [2021-03-25 09:28:40,595 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 43 places, 26 transitions, 90 flow [2021-03-25 09:28:40,596 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 26 transitions, 90 flow [2021-03-25 09:28:40,605 INFO L129 PetriNetUnfolder]: 0/31 cut-off events. [2021-03-25 09:28:40,605 INFO L130 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2021-03-25 09:28:40,605 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 31 events. 0/31 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-25 09:28:40,607 INFO L142 LiptonReduction]: Number of co-enabled transitions 122 [2021-03-25 09:28:40,765 INFO L154 LiptonReduction]: Checked pairs total: 303 [2021-03-25 09:28:40,766 INFO L156 LiptonReduction]: Total number of compositions: 6 [2021-03-25 09:28:40,766 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 171 [2021-03-25 09:28:40,766 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 24 transitions, 86 flow [2021-03-25 09:28:40,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 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 09:28:40,767 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:28:40,767 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:28:40,767 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 09:28:40,767 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:28:40,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:28:40,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1186556961, now seen corresponding path program 1 times [2021-03-25 09:28:40,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:28:40,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184822589] [2021-03-25 09:28:40,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:28:40,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:28:40,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:40,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:40,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:40,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:40,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:40,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 09:28:40,853 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 09:28:40,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:40,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:40,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 09:28:40,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:40,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:28:40,868 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 09:28:40,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184822589] [2021-03-25 09:28:40,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:28:40,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 09:28:40,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267681612] [2021-03-25 09:28:40,869 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 09:28:40,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:28:40,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 09:28:40,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-25 09:28:40,870 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 43 [2021-03-25 09:28:40,870 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 24 transitions, 86 flow. Second operand has 6 states, 6 states have (on average 26.5) internal successors, (159), 6 states have internal predecessors, (159), 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 09:28:40,870 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:28:40,870 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 43 [2021-03-25 09:28:40,870 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:28:40,972 INFO L129 PetriNetUnfolder]: 20/102 cut-off events. [2021-03-25 09:28:40,972 INFO L130 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2021-03-25 09:28:40,974 INFO L84 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 102 events. 20/102 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 442 event pairs, 7 based on Foata normal form. 8/108 useless extension candidates. Maximal degree in co-relation 221. Up to 31 conditions per place. [2021-03-25 09:28:40,975 INFO L132 encePairwiseOnDemand]: 33/43 looper letters, 19 selfloop transitions, 6 changer transitions 4/40 dead transitions. [2021-03-25 09:28:40,975 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 40 transitions, 206 flow [2021-03-25 09:28:40,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 09:28:40,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 09:28:40,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 183 transitions. [2021-03-25 09:28:40,977 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7093023255813954 [2021-03-25 09:28:40,977 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 183 transitions. [2021-03-25 09:28:40,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 183 transitions. [2021-03-25 09:28:40,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:28:40,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 183 transitions. [2021-03-25 09:28:40,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 30.5) internal successors, (183), 6 states have internal predecessors, (183), 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 09:28:40,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 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 09:28:40,979 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 43.0) internal successors, (301), 7 states have internal predecessors, (301), 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 09:28:40,979 INFO L185 Difference]: Start difference. First operand has 38 places, 24 transitions, 86 flow. Second operand 6 states and 183 transitions. [2021-03-25 09:28:40,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 40 transitions, 206 flow [2021-03-25 09:28:40,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 40 transitions, 162 flow, removed 5 selfloop flow, removed 9 redundant places. [2021-03-25 09:28:40,988 INFO L241 Difference]: Finished difference. Result has 38 places, 28 transitions, 110 flow [2021-03-25 09:28:40,988 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=110, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2021-03-25 09:28:40,988 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2021-03-25 09:28:40,988 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:28:40,991 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 28 transitions, 110 flow [2021-03-25 09:28:40,992 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 28 transitions, 110 flow [2021-03-25 09:28:40,993 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 28 transitions, 110 flow [2021-03-25 09:28:41,003 INFO L129 PetriNetUnfolder]: 2/46 cut-off events. [2021-03-25 09:28:41,004 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 09:28:41,004 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 46 events. 2/46 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 108 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 32. Up to 9 conditions per place. [2021-03-25 09:28:41,004 INFO L142 LiptonReduction]: Number of co-enabled transitions 104 [2021-03-25 09:28:41,009 INFO L154 LiptonReduction]: Checked pairs total: 168 [2021-03-25 09:28:41,010 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 09:28:41,010 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 22 [2021-03-25 09:28:41,010 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 110 flow [2021-03-25 09:28:41,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 26.5) internal successors, (159), 6 states have internal predecessors, (159), 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 09:28:41,011 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:28:41,011 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:28:41,011 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 09:28:41,011 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:28:41,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:28:41,011 INFO L82 PathProgramCache]: Analyzing trace with hash 811959414, now seen corresponding path program 1 times [2021-03-25 09:28:41,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:28:41,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790005183] [2021-03-25 09:28:41,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:28:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:28:41,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:41,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:28:41,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:41,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:28:41,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:41,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:28:41,027 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 09:28:41,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790005183] [2021-03-25 09:28:41,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:28:41,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 09:28:41,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179646870] [2021-03-25 09:28:41,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 09:28:41,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:28:41,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 09:28:41,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 09:28:41,029 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 43 [2021-03-25 09:28:41,029 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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 09:28:41,029 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:28:41,029 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 43 [2021-03-25 09:28:41,029 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:28:41,037 INFO L129 PetriNetUnfolder]: 3/54 cut-off events. [2021-03-25 09:28:41,037 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-03-25 09:28:41,037 INFO L84 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 54 events. 3/54 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 146 event pairs, 1 based on Foata normal form. 2/49 useless extension candidates. Maximal degree in co-relation 71. Up to 10 conditions per place. [2021-03-25 09:28:41,038 INFO L132 encePairwiseOnDemand]: 40/43 looper letters, 2 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2021-03-25 09:28:41,038 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 28 transitions, 118 flow [2021-03-25 09:28:41,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 09:28:41,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 09:28:41,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2021-03-25 09:28:41,039 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9224806201550387 [2021-03-25 09:28:41,039 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 119 transitions. [2021-03-25 09:28:41,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 119 transitions. [2021-03-25 09:28:41,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:28:41,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 119 transitions. [2021-03-25 09:28:41,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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 09:28:41,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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 09:28:41,040 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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 09:28:41,041 INFO L185 Difference]: Start difference. First operand has 36 places, 28 transitions, 110 flow. Second operand 3 states and 119 transitions. [2021-03-25 09:28:41,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 28 transitions, 118 flow [2021-03-25 09:28:41,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 28 transitions, 106 flow, removed 4 selfloop flow, removed 3 redundant places. [2021-03-25 09:28:41,042 INFO L241 Difference]: Finished difference. Result has 36 places, 28 transitions, 106 flow [2021-03-25 09:28:41,042 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2021-03-25 09:28:41,042 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2021-03-25 09:28:41,042 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:28:41,043 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 28 transitions, 106 flow [2021-03-25 09:28:41,043 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 28 transitions, 106 flow [2021-03-25 09:28:41,043 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 28 transitions, 106 flow [2021-03-25 09:28:41,047 INFO L129 PetriNetUnfolder]: 3/54 cut-off events. [2021-03-25 09:28:41,047 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-03-25 09:28:41,047 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 54 events. 3/54 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 143 event pairs, 1 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 52. Up to 10 conditions per place. [2021-03-25 09:28:41,047 INFO L142 LiptonReduction]: Number of co-enabled transitions 96 [2021-03-25 09:28:41,078 INFO L154 LiptonReduction]: Checked pairs total: 210 [2021-03-25 09:28:41,078 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 09:28:41,078 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 36 [2021-03-25 09:28:41,079 INFO L480 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 107 flow [2021-03-25 09:28:41,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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 09:28:41,079 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:28:41,079 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:28:41,079 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 09:28:41,079 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:28:41,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:28:41,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1080799743, now seen corresponding path program 1 times [2021-03-25 09:28:41,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:28:41,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700165105] [2021-03-25 09:28:41,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:28:41,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:28:41,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:41,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:41,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:41,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:41,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:41,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 09:28:41,118 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 09:28:41,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:41,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:41,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 09:28:41,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:41,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:28:41,138 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 09:28:41,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700165105] [2021-03-25 09:28:41,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:28:41,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 09:28:41,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261466217] [2021-03-25 09:28:41,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 09:28:41,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:28:41,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 09:28:41,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-25 09:28:41,143 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 45 [2021-03-25 09:28:41,143 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 107 flow. Second operand has 6 states, 6 states have (on average 26.5) internal successors, (159), 6 states have internal predecessors, (159), 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 09:28:41,143 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:28:41,143 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 45 [2021-03-25 09:28:41,143 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:28:41,230 INFO L129 PetriNetUnfolder]: 18/96 cut-off events. [2021-03-25 09:28:41,231 INFO L130 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2021-03-25 09:28:41,231 INFO L84 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 96 events. 18/96 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 401 event pairs, 12 based on Foata normal form. 4/81 useless extension candidates. Maximal degree in co-relation 78. Up to 29 conditions per place. [2021-03-25 09:28:41,232 INFO L132 encePairwiseOnDemand]: 36/45 looper letters, 17 selfloop transitions, 6 changer transitions 8/41 dead transitions. [2021-03-25 09:28:41,233 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 41 transitions, 211 flow [2021-03-25 09:28:41,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 09:28:41,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 09:28:41,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2021-03-25 09:28:41,234 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.674074074074074 [2021-03-25 09:28:41,234 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 182 transitions. [2021-03-25 09:28:41,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 182 transitions. [2021-03-25 09:28:41,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:28:41,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 182 transitions. [2021-03-25 09:28:41,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 30.333333333333332) internal successors, (182), 6 states have internal predecessors, (182), 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 09:28:41,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 45.0) internal successors, (315), 7 states have internal predecessors, (315), 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 09:28:41,237 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 45.0) internal successors, (315), 7 states have internal predecessors, (315), 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 09:28:41,237 INFO L185 Difference]: Start difference. First operand has 35 places, 27 transitions, 107 flow. Second operand 6 states and 182 transitions. [2021-03-25 09:28:41,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 41 transitions, 211 flow [2021-03-25 09:28:41,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 41 transitions, 203 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 09:28:41,241 INFO L241 Difference]: Finished difference. Result has 41 places, 29 transitions, 139 flow [2021-03-25 09:28:41,241 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=139, PETRI_PLACES=41, PETRI_TRANSITIONS=29} [2021-03-25 09:28:41,241 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2021-03-25 09:28:41,242 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:28:41,242 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 29 transitions, 139 flow [2021-03-25 09:28:41,243 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 29 transitions, 139 flow [2021-03-25 09:28:41,243 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 39 places, 29 transitions, 139 flow [2021-03-25 09:28:41,246 INFO L129 PetriNetUnfolder]: 2/49 cut-off events. [2021-03-25 09:28:41,247 INFO L130 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2021-03-25 09:28:41,247 INFO L84 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 49 events. 2/49 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 130 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 51. Up to 10 conditions per place. [2021-03-25 09:28:41,249 INFO L142 LiptonReduction]: Number of co-enabled transitions 64 [2021-03-25 09:28:41,491 INFO L154 LiptonReduction]: Checked pairs total: 240 [2021-03-25 09:28:41,491 INFO L156 LiptonReduction]: Total number of compositions: 6 [2021-03-25 09:28:41,492 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 250 [2021-03-25 09:28:41,492 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 137 flow [2021-03-25 09:28:41,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 26.5) internal successors, (159), 6 states have internal predecessors, (159), 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 09:28:41,492 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:28:41,493 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:28:41,493 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 09:28:41,493 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:28:41,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:28:41,493 INFO L82 PathProgramCache]: Analyzing trace with hash -311877721, now seen corresponding path program 1 times [2021-03-25 09:28:41,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:28:41,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798130827] [2021-03-25 09:28:41,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:28:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:28:41,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:41,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:28:41,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:41,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:28:41,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:41,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:28:41,530 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 09:28:41,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798130827] [2021-03-25 09:28:41,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:28:41,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 09:28:41,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764878661] [2021-03-25 09:28:41,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 09:28:41,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:28:41,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 09:28:41,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 09:28:41,533 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 51 [2021-03-25 09:28:41,533 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 137 flow. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 09:28:41,533 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:28:41,533 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 51 [2021-03-25 09:28:41,533 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:28:41,545 INFO L129 PetriNetUnfolder]: 2/43 cut-off events. [2021-03-25 09:28:41,545 INFO L130 PetriNetUnfolder]: For 26/28 co-relation queries the response was YES. [2021-03-25 09:28:41,545 INFO L84 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 43 events. 2/43 cut-off events. For 26/28 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 108 event pairs, 0 based on Foata normal form. 3/42 useless extension candidates. Maximal degree in co-relation 50. Up to 10 conditions per place. [2021-03-25 09:28:41,546 INFO L132 encePairwiseOnDemand]: 48/51 looper letters, 2 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2021-03-25 09:28:41,546 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 26 transitions, 145 flow [2021-03-25 09:28:41,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 09:28:41,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 09:28:41,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2021-03-25 09:28:41,547 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.934640522875817 [2021-03-25 09:28:41,547 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 143 transitions. [2021-03-25 09:28:41,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 143 transitions. [2021-03-25 09:28:41,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:28:41,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 143 transitions. [2021-03-25 09:28:41,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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 09:28:41,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 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 09:28:41,548 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 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 09:28:41,548 INFO L185 Difference]: Start difference. First operand has 36 places, 26 transitions, 137 flow. Second operand 3 states and 143 transitions. [2021-03-25 09:28:41,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 26 transitions, 145 flow [2021-03-25 09:28:41,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 26 transitions, 135 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-03-25 09:28:41,551 INFO L241 Difference]: Finished difference. Result has 37 places, 26 transitions, 135 flow [2021-03-25 09:28:41,551 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=37, PETRI_TRANSITIONS=26} [2021-03-25 09:28:41,552 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 6 predicate places. [2021-03-25 09:28:41,552 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:28:41,552 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 26 transitions, 135 flow [2021-03-25 09:28:41,552 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 26 transitions, 135 flow [2021-03-25 09:28:41,552 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 26 transitions, 135 flow [2021-03-25 09:28:41,556 INFO L129 PetriNetUnfolder]: 2/43 cut-off events. [2021-03-25 09:28:41,557 INFO L130 PetriNetUnfolder]: For 28/30 co-relation queries the response was YES. [2021-03-25 09:28:41,557 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 43 events. 2/43 cut-off events. For 28/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 99 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 50. Up to 9 conditions per place. [2021-03-25 09:28:41,557 INFO L142 LiptonReduction]: Number of co-enabled transitions 32 [2021-03-25 09:28:41,731 INFO L154 LiptonReduction]: Checked pairs total: 25 [2021-03-25 09:28:41,731 INFO L156 LiptonReduction]: Total number of compositions: 6 [2021-03-25 09:28:41,732 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 180 [2021-03-25 09:28:41,733 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 23 transitions, 134 flow [2021-03-25 09:28:41,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 09:28:41,734 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:28:41,734 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:28:41,734 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 09:28:41,734 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:28:41,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:28:41,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1593126037, now seen corresponding path program 1 times [2021-03-25 09:28:41,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:28:41,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856776343] [2021-03-25 09:28:41,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:28:41,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:28:41,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:41,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:28:41,799 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:41,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:41,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:41,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:41,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:41,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 09:28:41,818 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 09:28:41,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:41,840 INFO L142 QuantifierPusher]: treesize reduction 16, result has 40.7 percent of original size [2021-03-25 09:28:41,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 09:28:41,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:41,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:28:41,859 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 09:28:41,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856776343] [2021-03-25 09:28:41,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:28:41,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 09:28:41,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764090285] [2021-03-25 09:28:41,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 09:28:41,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:28:41,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 09:28:41,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-25 09:28:41,861 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 57 [2021-03-25 09:28:41,861 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 23 transitions, 134 flow. Second operand has 7 states, 7 states have (on average 26.142857142857142) internal successors, (183), 7 states have internal predecessors, (183), 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 09:28:41,861 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:28:41,861 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 57 [2021-03-25 09:28:41,861 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:28:41,915 INFO L129 PetriNetUnfolder]: 2/34 cut-off events. [2021-03-25 09:28:41,916 INFO L130 PetriNetUnfolder]: For 45/47 co-relation queries the response was YES. [2021-03-25 09:28:41,916 INFO L84 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 34 events. 2/34 cut-off events. For 45/47 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 67 event pairs, 2 based on Foata normal form. 4/37 useless extension candidates. Maximal degree in co-relation 54. Up to 11 conditions per place. [2021-03-25 09:28:41,916 INFO L132 encePairwiseOnDemand]: 45/57 looper letters, 5 selfloop transitions, 6 changer transitions 5/22 dead transitions. [2021-03-25 09:28:41,916 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 22 transitions, 154 flow [2021-03-25 09:28:41,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 09:28:41,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 09:28:41,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 220 transitions. [2021-03-25 09:28:41,919 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2021-03-25 09:28:41,919 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 220 transitions. [2021-03-25 09:28:41,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 220 transitions. [2021-03-25 09:28:41,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:28:41,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 220 transitions. [2021-03-25 09:28:41,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 27.5) internal successors, (220), 8 states have internal predecessors, (220), 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 09:28:41,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 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 09:28:41,920 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 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 09:28:41,921 INFO L185 Difference]: Start difference. First operand has 34 places, 23 transitions, 134 flow. Second operand 8 states and 220 transitions. [2021-03-25 09:28:41,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 22 transitions, 154 flow [2021-03-25 09:28:41,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 22 transitions, 140 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-03-25 09:28:41,922 INFO L241 Difference]: Finished difference. Result has 41 places, 17 transitions, 98 flow [2021-03-25 09:28:41,922 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=98, PETRI_PLACES=41, PETRI_TRANSITIONS=17} [2021-03-25 09:28:41,923 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2021-03-25 09:28:41,923 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:28:41,923 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 17 transitions, 98 flow [2021-03-25 09:28:41,923 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 17 transitions, 98 flow [2021-03-25 09:28:41,923 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 17 transitions, 98 flow [2021-03-25 09:28:41,926 INFO L129 PetriNetUnfolder]: 1/24 cut-off events. [2021-03-25 09:28:41,926 INFO L130 PetriNetUnfolder]: For 40/41 co-relation queries the response was YES. [2021-03-25 09:28:41,926 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 24 events. 1/24 cut-off events. For 40/41 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 25 event pairs, 1 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 65. Up to 6 conditions per place. [2021-03-25 09:28:41,926 INFO L142 LiptonReduction]: Number of co-enabled transitions 12 [2021-03-25 09:28:41,946 INFO L154 LiptonReduction]: Checked pairs total: 5 [2021-03-25 09:28:41,946 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 09:28:41,946 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 23 [2021-03-25 09:28:41,947 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 17 transitions, 104 flow [2021-03-25 09:28:41,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 26.142857142857142) internal successors, (183), 7 states have internal predecessors, (183), 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 09:28:41,947 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:28:41,947 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:28:41,948 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 09:28:41,948 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:28:41,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:28:41,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1711102140, now seen corresponding path program 1 times [2021-03-25 09:28:41,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:28:41,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780357734] [2021-03-25 09:28:41,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:28:41,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:28:41,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:41,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 09:28:41,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:41,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:28:41,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:41,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:41,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:41,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:42,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:42,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:42,009 INFO L142 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-03-25 09:28:42,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:42,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:42,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:28:42,019 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 09:28:42,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780357734] [2021-03-25 09:28:42,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:28:42,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 09:28:42,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546648794] [2021-03-25 09:28:42,019 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 09:28:42,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:28:42,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 09:28:42,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-03-25 09:28:42,020 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 58 [2021-03-25 09:28:42,021 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 17 transitions, 104 flow. Second operand has 8 states, 8 states have (on average 26.0) internal successors, (208), 8 states have internal predecessors, (208), 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 09:28:42,021 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:28:42,021 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 58 [2021-03-25 09:28:42,021 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:28:42,060 INFO L129 PetriNetUnfolder]: 1/21 cut-off events. [2021-03-25 09:28:42,060 INFO L130 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2021-03-25 09:28:42,061 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 21 events. 1/21 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 1 based on Foata normal form. 2/23 useless extension candidates. Maximal degree in co-relation 75. Up to 6 conditions per place. [2021-03-25 09:28:42,061 INFO L132 encePairwiseOnDemand]: 49/58 looper letters, 3 selfloop transitions, 5 changer transitions 3/16 dead transitions. [2021-03-25 09:28:42,061 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 16 transitions, 121 flow [2021-03-25 09:28:42,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 09:28:42,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 09:28:42,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2021-03-25 09:28:42,062 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4630541871921182 [2021-03-25 09:28:42,062 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 188 transitions. [2021-03-25 09:28:42,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 188 transitions. [2021-03-25 09:28:42,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:28:42,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 188 transitions. [2021-03-25 09:28:42,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 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 09:28:42,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 58.0) internal successors, (464), 8 states have internal predecessors, (464), 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 09:28:42,064 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 58.0) internal successors, (464), 8 states have internal predecessors, (464), 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 09:28:42,064 INFO L185 Difference]: Start difference. First operand has 37 places, 17 transitions, 104 flow. Second operand 7 states and 188 transitions. [2021-03-25 09:28:42,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 16 transitions, 121 flow [2021-03-25 09:28:42,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 16 transitions, 79 flow, removed 7 selfloop flow, removed 13 redundant places. [2021-03-25 09:28:42,065 INFO L241 Difference]: Finished difference. Result has 30 places, 13 transitions, 53 flow [2021-03-25 09:28:42,065 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=53, PETRI_PLACES=30, PETRI_TRANSITIONS=13} [2021-03-25 09:28:42,065 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, -1 predicate places. [2021-03-25 09:28:42,066 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:28:42,066 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 13 transitions, 53 flow [2021-03-25 09:28:42,066 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 13 transitions, 53 flow [2021-03-25 09:28:42,066 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 26 places, 13 transitions, 53 flow [2021-03-25 09:28:42,067 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-03-25 09:28:42,067 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-03-25 09:28:42,067 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 15 events. 0/15 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-25 09:28:42,068 INFO L142 LiptonReduction]: Number of co-enabled transitions 8 [2021-03-25 09:28:42,068 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-25 09:28:42,068 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 09:28:42,068 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-03-25 09:28:42,069 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 13 transitions, 53 flow [2021-03-25 09:28:42,069 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.0) internal successors, (208), 8 states have internal predecessors, (208), 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 09:28:42,069 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:28:42,069 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 09:28:42,069 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 09:28:42,069 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:28:42,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:28:42,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1827458524, now seen corresponding path program 1 times [2021-03-25 09:28:42,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:28:42,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516696521] [2021-03-25 09:28:42,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:28:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:28:42,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:42,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 09:28:42,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:42,097 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:28:42,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:42,106 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:42,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:42,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:42,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:42,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:42,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:42,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:42,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:42,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:28:42,138 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 09:28:42,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516696521] [2021-03-25 09:28:42,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:28:42,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 09:28:42,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969772313] [2021-03-25 09:28:42,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 09:28:42,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:28:42,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 09:28:42,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-03-25 09:28:42,139 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 58 [2021-03-25 09:28:42,140 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 13 transitions, 53 flow. Second operand has 8 states, 8 states have (on average 26.0) internal successors, (208), 8 states have internal predecessors, (208), 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 09:28:42,140 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:28:42,140 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 58 [2021-03-25 09:28:42,140 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:28:42,172 INFO L129 PetriNetUnfolder]: 1/12 cut-off events. [2021-03-25 09:28:42,172 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2021-03-25 09:28:42,172 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 12 events. 1/12 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 9 event pairs, 1 based on Foata normal form. 1/13 useless extension candidates. Maximal degree in co-relation 29. Up to 5 conditions per place. [2021-03-25 09:28:42,173 INFO L132 encePairwiseOnDemand]: 53/58 looper letters, 0 selfloop transitions, 0 changer transitions 9/9 dead transitions. [2021-03-25 09:28:42,173 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 9 transitions, 59 flow [2021-03-25 09:28:42,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 09:28:42,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 09:28:42,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2021-03-25 09:28:42,174 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4540229885057471 [2021-03-25 09:28:42,174 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 158 transitions. [2021-03-25 09:28:42,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 158 transitions. [2021-03-25 09:28:42,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:28:42,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 158 transitions. [2021-03-25 09:28:42,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 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 09:28:42,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 58.0) internal successors, (406), 7 states have internal predecessors, (406), 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 09:28:42,177 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 58.0) internal successors, (406), 7 states have internal predecessors, (406), 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 09:28:42,177 INFO L185 Difference]: Start difference. First operand has 26 places, 13 transitions, 53 flow. Second operand 6 states and 158 transitions. [2021-03-25 09:28:42,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 9 transitions, 59 flow [2021-03-25 09:28:42,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 9 transitions, 46 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-03-25 09:28:42,178 INFO L241 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2021-03-25 09:28:42,179 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2021-03-25 09:28:42,179 INFO L343 CegarLoopForPetriNet]: 31 programPoint places, -12 predicate places. [2021-03-25 09:28:42,179 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:28:42,179 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 19 places, 0 transitions, 0 flow [2021-03-25 09:28:42,179 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 19 places, 0 transitions, 0 flow [2021-03-25 09:28:42,179 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 09:28:42,179 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 09:28:42,179 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 09:28:42,180 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 09:28:42,180 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 09:28:42,180 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 09:28:42,180 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 09:28:42,180 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 09:28:42,180 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 09:28:42,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 26.0) internal successors, (208), 8 states have internal predecessors, (208), 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 09:28:42,181 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 09:28:42,185 INFO L202 PluginConnector]: Adding new model bakery-2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 09:28:42 BasicIcfg [2021-03-25 09:28:42,185 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 09:28:42,187 INFO L168 Benchmark]: Toolchain (without parser) took 2832.70 ms. Allocated memory was 255.9 MB in the beginning and 423.6 MB in the end (delta: 167.8 MB). Free memory was 236.4 MB in the beginning and 335.1 MB in the end (delta: -98.7 MB). Peak memory consumption was 67.6 MB. Max. memory is 16.0 GB. [2021-03-25 09:28:42,188 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.55 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 09:28:42,188 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.22 ms. Allocated memory is still 255.9 MB. Free memory was 236.3 MB in the beginning and 234.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 09:28:42,188 INFO L168 Benchmark]: Boogie Preprocessor took 19.04 ms. Allocated memory is still 255.9 MB. Free memory was 234.8 MB in the beginning and 233.8 MB in the end (delta: 961.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 09:28:42,188 INFO L168 Benchmark]: RCFGBuilder took 244.43 ms. Allocated memory is still 255.9 MB. Free memory was 233.7 MB in the beginning and 237.6 MB in the end (delta: -3.9 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.0 GB. [2021-03-25 09:28:42,189 INFO L168 Benchmark]: TraceAbstraction took 2540.50 ms. Allocated memory was 255.9 MB in the beginning and 423.6 MB in the end (delta: 167.8 MB). Free memory was 237.1 MB in the beginning and 335.1 MB in the end (delta: -98.0 MB). Peak memory consumption was 66.6 MB. Max. memory is 16.0 GB. [2021-03-25 09:28:42,189 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 0.55 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 24.22 ms. Allocated memory is still 255.9 MB. Free memory was 236.3 MB in the beginning and 234.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 19.04 ms. Allocated memory is still 255.9 MB. Free memory was 234.8 MB in the beginning and 233.8 MB in the end (delta: 961.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 244.43 ms. Allocated memory is still 255.9 MB. Free memory was 233.7 MB in the beginning and 237.6 MB in the end (delta: -3.9 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2540.50 ms. Allocated memory was 255.9 MB in the beginning and 423.6 MB in the end (delta: 167.8 MB). Free memory was 237.1 MB in the beginning and 335.1 MB in the end (delta: -98.0 MB). Peak memory consumption was 66.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 63.8ms, 34 PlacesBefore, 31 PlacesAfterwards, 27 TransitionsBefore, 24 TransitionsAfterwards, 240 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 716 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 279, positive: 213, positive conditional: 0, positive unconditional: 213, negative: 66, negative conditional: 0, negative unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 84, positive: 68, positive conditional: 0, positive unconditional: 68, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 84, positive: 68, positive conditional: 0, positive unconditional: 68, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 279, positive: 145, positive conditional: 0, positive unconditional: 145, negative: 50, negative conditional: 0, negative unconditional: 50, unknown: 84, unknown conditional: 0, unknown unconditional: 84] , Statistics on independence cache: Total cache size (in pairs): 57, Positive cache size: 44, Positive conditional cache size: 0, Positive unconditional cache size: 44, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 65.6ms, 37 PlacesBefore, 35 PlacesAfterwards, 29 TransitionsBefore, 29 TransitionsAfterwards, 194 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 576 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 204, positive: 146, positive conditional: 0, positive unconditional: 146, negative: 58, negative conditional: 0, negative unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 13, positive: 13, positive conditional: 0, positive unconditional: 13, 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: 13, positive: 13, positive conditional: 0, positive unconditional: 13, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 204, positive: 133, positive conditional: 0, positive unconditional: 133, negative: 58, negative conditional: 0, negative unconditional: 58, unknown: 13, unknown conditional: 0, unknown unconditional: 13] , Statistics on independence cache: Total cache size (in pairs): 62, Positive cache size: 52, Positive conditional cache size: 0, Positive unconditional cache size: 52, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 170.3ms, 43 PlacesBefore, 38 PlacesAfterwards, 26 TransitionsBefore, 24 TransitionsAfterwards, 122 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 6 TotalNumberOfCompositions, 303 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 132, positive: 92, positive conditional: 0, positive unconditional: 92, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, 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: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 132, positive: 90, positive conditional: 0, positive unconditional: 90, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 37, Positive cache size: 29, Positive conditional cache size: 0, Positive unconditional cache size: 29, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 17.6ms, 38 PlacesBefore, 36 PlacesAfterwards, 28 TransitionsBefore, 28 TransitionsAfterwards, 104 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 168 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 81, positive: 56, positive conditional: 0, positive unconditional: 56, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 12, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 12, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 81, positive: 48, positive conditional: 0, positive unconditional: 48, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 12, unknown conditional: 0, unknown unconditional: 12] , Statistics on independence cache: Total cache size (in pairs): 49, Positive cache size: 37, Positive conditional cache size: 0, Positive unconditional cache size: 37, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 35.0ms, 36 PlacesBefore, 35 PlacesAfterwards, 28 TransitionsBefore, 27 TransitionsAfterwards, 96 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 210 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 100, positive: 68, positive conditional: 0, positive unconditional: 68, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 6, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 6, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 100, positive: 66, positive conditional: 0, positive unconditional: 66, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 6, unknown conditional: 0, unknown unconditional: 6] , Statistics on independence cache: Total cache size (in pairs): 38, Positive cache size: 29, Positive conditional cache size: 0, Positive unconditional cache size: 29, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 248.8ms, 41 PlacesBefore, 36 PlacesAfterwards, 29 TransitionsBefore, 26 TransitionsAfterwards, 64 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 6 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 6 TotalNumberOfCompositions, 240 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 95, positive: 52, positive conditional: 0, positive unconditional: 52, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 6, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 6, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 95, positive: 50, positive conditional: 0, positive unconditional: 50, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 6, unknown conditional: 0, unknown unconditional: 6] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 13, Positive conditional cache size: 0, Positive unconditional cache size: 13, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 179.5ms, 37 PlacesBefore, 34 PlacesAfterwards, 26 TransitionsBefore, 23 TransitionsAfterwards, 32 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 6 TotalNumberOfCompositions, 25 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 22, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 11, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 11, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 22, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 11, unknown conditional: 0, unknown unconditional: 11] , Statistics on independence cache: Total cache size (in pairs): 10, Positive cache size: 6, Positive conditional cache size: 0, Positive unconditional cache size: 6, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 23.3ms, 41 PlacesBefore, 37 PlacesAfterwards, 17 TransitionsBefore, 17 TransitionsAfterwards, 12 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 5 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5, positive: 3, positive conditional: 0, positive unconditional: 3, 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: 1, positive: 1, positive conditional: 0, positive unconditional: 1, 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: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 8, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4ms, 30 PlacesBefore, 26 PlacesAfterwards, 13 TransitionsBefore, 13 TransitionsAfterwards, 8 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 2 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, 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: 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: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 8, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.7ms, 19 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): 8, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - PositiveResult [Line: 54]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 5.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2472.1ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 684.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 113.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 41 SDtfs, 56 SDslu, 8 SDs, 0 SdLazy, 334 SolverSat, 57 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 217.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 382.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=139occurred in iteration=5, InterpolantAutomatonStates: 56, 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: 18.0ms SsaConstructionTime, 131.8ms SatisfiabilityAnalysisTime, 592.0ms InterpolantComputationTime, 171 NumberOfCodeBlocks, 171 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 162 ConstructedInterpolants, 0 QuantifiedInterpolants, 838 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...