/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-RepeatedSemanticLbeWithDisjunctivePredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/showcase/NonAtomicIncrement_2Threads.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 13:22:39,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 13:22:39,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 13:22:39,440 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 13:22:39,441 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 13:22:39,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 13:22:39,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 13:22:39,451 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 13:22:39,453 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 13:22:39,457 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 13:22:39,458 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 13:22:39,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 13:22:39,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 13:22:39,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 13:22:39,463 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 13:22:39,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 13:22:39,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 13:22:39,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 13:22:39,469 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 13:22:39,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 13:22:39,473 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 13:22:39,481 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 13:22:39,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 13:22:39,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 13:22:39,489 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-26 13:22:39,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 13:22:39,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 13:22:39,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 13:22:39,503 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-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2021-03-26 13:22:39,537 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 13:22:39,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 13:22:39,540 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 13:22:39,541 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 13:22:39,541 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 13:22:39,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 13:22:39,541 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 13:22:39,541 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 13:22:39,541 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 13:22:39,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 13:22:39,542 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 13:22:39,542 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 13:22:39,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 13:22:39,543 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 13:22:39,543 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 13:22:39,543 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 13:22:39,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 13:22:39,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 13:22:39,543 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 13:22:39,544 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 13:22:39,544 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 13:22:39,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 13:22:39,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 13:22:39,544 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 13:22:39,544 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 13:22:39,545 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 13:22:39,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 13:22:39,545 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES_DISJUNCTIVE [2021-03-26 13:22:39,545 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 13:22:39,545 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 13:22:39,545 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 13:22:39,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 13:22:39,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 13:22:39,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 13:22:39,878 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-26 13:22:39,879 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-26 13:22:39,879 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/NonAtomicIncrement_2Threads.bpl [2021-03-26 13:22:39,880 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/NonAtomicIncrement_2Threads.bpl' [2021-03-26 13:22:39,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 13:22:39,924 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-26 13:22:39,925 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 13:22:39,925 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 13:22:39,925 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 13:22:39,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:22:39" (1/1) ... [2021-03-26 13:22:39,943 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:22:39" (1/1) ... [2021-03-26 13:22:39,950 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 13:22:39,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 13:22:39,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 13:22:39,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 13:22:39,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:22:39" (1/1) ... [2021-03-26 13:22:39,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:22:39" (1/1) ... [2021-03-26 13:22:39,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:22:39" (1/1) ... [2021-03-26 13:22:39,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:22:39" (1/1) ... [2021-03-26 13:22:39,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:22:39" (1/1) ... [2021-03-26 13:22:39,964 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:22:39" (1/1) ... [2021-03-26 13:22:39,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:22:39" (1/1) ... [2021-03-26 13:22:39,965 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 13:22:39,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 13:22:39,966 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 13:22:39,966 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 13:22:39,968 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:22:39" (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 [2021-03-26 13:22:40,038 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-26 13:22:40,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 13:22:40,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 13:22:40,040 INFO L124 BoogieDeclarations]: Specification and implementation of procedure IncrementProcess1 given in one single declaration [2021-03-26 13:22:40,040 INFO L130 BoogieDeclarations]: Found specification of procedure IncrementProcess1 [2021-03-26 13:22:40,040 INFO L138 BoogieDeclarations]: Found implementation of procedure IncrementProcess1 [2021-03-26 13:22:40,040 INFO L124 BoogieDeclarations]: Specification and implementation of procedure IncrementProcess2 given in one single declaration [2021-03-26 13:22:40,040 INFO L130 BoogieDeclarations]: Found specification of procedure IncrementProcess2 [2021-03-26 13:22:40,040 INFO L138 BoogieDeclarations]: Found implementation of procedure IncrementProcess2 [2021-03-26 13:22:40,041 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 13:22:40,201 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 13:22:40,202 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-26 13:22:40,203 INFO L202 PluginConnector]: Adding new model NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 01:22:40 BoogieIcfgContainer [2021-03-26 13:22:40,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 13:22:40,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 13:22:40,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 13:22:40,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 13:22:40,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.03 01:22:39" (1/2) ... [2021-03-26 13:22:40,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@782997e4 and model type NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 01:22:40, skipping insertion in model container [2021-03-26 13:22:40,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 01:22:40" (2/2) ... [2021-03-26 13:22:40,209 INFO L111 eAbstractionObserver]: Analyzing ICFG NonAtomicIncrement_2Threads.bpl [2021-03-26 13:22:40,228 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 13:22:40,231 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 13:22:40,242 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 13:22:40,258 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:40,258 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:40,259 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:40,259 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:40,259 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:40,259 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:40,259 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:40,260 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:40,260 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:40,260 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:40,260 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:40,260 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:40,261 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:40,261 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:40,261 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:40,261 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:40,262 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:40,262 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:40,262 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:40,262 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:40,262 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:40,262 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:40,263 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:40,263 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:40,264 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess1Thread1of1ForFork0_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:40,268 WARN L313 ript$VariableManager]: TermVariabe IncrementProcess2Thread1of1ForFork1_localx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:22:40,272 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-03-26 13:22:40,287 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-26 13:22:40,304 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 13:22:40,304 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 13:22:40,304 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 13:22:40,304 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 13:22:40,304 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 13:22:40,304 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 13:22:40,305 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 13:22:40,305 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 13:22:40,313 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 26 transitions, 74 flow [2021-03-26 13:22:40,331 INFO L129 PetriNetUnfolder]: 1/24 cut-off events. [2021-03-26 13:22:40,332 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-26 13:22:40,334 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 24 events. 1/24 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 19 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 9. Up to 3 conditions per place. [2021-03-26 13:22:40,334 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 26 transitions, 74 flow [2021-03-26 13:22:40,338 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 22 transitions, 62 flow [2021-03-26 13:22:40,339 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:22:40,352 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 27 places, 22 transitions, 62 flow [2021-03-26 13:22:40,355 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 27 places, 22 transitions, 62 flow [2021-03-26 13:22:40,356 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 27 places, 22 transitions, 62 flow [2021-03-26 13:22:40,365 INFO L129 PetriNetUnfolder]: 1/22 cut-off events. [2021-03-26 13:22:40,365 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-26 13:22:40,365 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 22 events. 1/22 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 18 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 9. Up to 3 conditions per place. [2021-03-26 13:22:40,367 INFO L142 LiptonReduction]: Number of co-enabled transitions 140 [2021-03-26 13:22:40,539 INFO L154 LiptonReduction]: Checked pairs total: 354 [2021-03-26 13:22:40,539 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 13:22:40,541 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 203 [2021-03-26 13:22:40,554 INFO L129 PetriNetUnfolder]: 1/19 cut-off events. [2021-03-26 13:22:40,554 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-26 13:22:40,555 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:22:40,558 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:22:40,559 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:22:40,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:22:40,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1717627251, now seen corresponding path program 1 times [2021-03-26 13:22:40,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:22:40,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391598432] [2021-03-26 13:22:40,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:22:40,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:22:40,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:40,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:40,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:40,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:40,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:40,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:40,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:40,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:40,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:40,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:40,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:40,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:40,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:40,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:40,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:40,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:40,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:40,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:40,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:40,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:40,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:40,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:40,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:40,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:40,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:40,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:40,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:22:40,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391598432] [2021-03-26 13:22:40,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:22:40,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-03-26 13:22:40,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39308832] [2021-03-26 13:22:40,916 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-26 13:22:40,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:22:40,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-26 13:22:40,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-03-26 13:22:40,946 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 28 [2021-03-26 13:22:40,954 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 58 flow. Second operand has 15 states, 15 states have (on average 10.066666666666666) internal successors, (151), 15 states have internal predecessors, (151), 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) [2021-03-26 13:22:40,954 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:22:40,954 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 28 [2021-03-26 13:22:40,955 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:22:41,427 INFO L129 PetriNetUnfolder]: 79/236 cut-off events. [2021-03-26 13:22:41,428 INFO L130 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2021-03-26 13:22:41,431 INFO L84 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 236 events. 79/236 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1080 event pairs, 25 based on Foata normal form. 4/240 useless extension candidates. Maximal degree in co-relation 428. Up to 81 conditions per place. [2021-03-26 13:22:41,434 INFO L132 encePairwiseOnDemand]: 14/28 looper letters, 41 selfloop transitions, 27 changer transitions 14/86 dead transitions. [2021-03-26 13:22:41,434 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 86 transitions, 357 flow [2021-03-26 13:22:41,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-26 13:22:41,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-03-26 13:22:41,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 248 transitions. [2021-03-26 13:22:41,451 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2021-03-26 13:22:41,452 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 248 transitions. [2021-03-26 13:22:41,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 248 transitions. [2021-03-26 13:22:41,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:22:41,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 248 transitions. [2021-03-26 13:22:41,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 13.777777777777779) internal successors, (248), 18 states have internal predecessors, (248), 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) [2021-03-26 13:22:41,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 28.0) internal successors, (532), 19 states have internal predecessors, (532), 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) [2021-03-26 13:22:41,469 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 28.0) internal successors, (532), 19 states have internal predecessors, (532), 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) [2021-03-26 13:22:41,470 INFO L185 Difference]: Start difference. First operand has 25 places, 20 transitions, 58 flow. Second operand 18 states and 248 transitions. [2021-03-26 13:22:41,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 86 transitions, 357 flow [2021-03-26 13:22:41,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 86 transitions, 343 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-26 13:22:41,484 INFO L241 Difference]: Finished difference. Result has 50 places, 48 transitions, 240 flow [2021-03-26 13:22:41,486 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=240, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2021-03-26 13:22:41,487 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 25 predicate places. [2021-03-26 13:22:41,489 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:22:41,490 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 50 places, 48 transitions, 240 flow [2021-03-26 13:22:41,491 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 50 places, 48 transitions, 240 flow [2021-03-26 13:22:41,491 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 44 places, 48 transitions, 240 flow [2021-03-26 13:22:41,519 INFO L129 PetriNetUnfolder]: 28/123 cut-off events. [2021-03-26 13:22:41,520 INFO L130 PetriNetUnfolder]: For 195/195 co-relation queries the response was YES. [2021-03-26 13:22:41,522 INFO L84 FinitePrefix]: Finished finitePrefix Result has 348 conditions, 123 events. 28/123 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 554 event pairs, 5 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 324. Up to 28 conditions per place. [2021-03-26 13:22:41,524 INFO L142 LiptonReduction]: Number of co-enabled transitions 138 [2021-03-26 13:22:41,686 INFO L154 LiptonReduction]: Checked pairs total: 843 [2021-03-26 13:22:41,686 INFO L156 LiptonReduction]: Total number of compositions: 8 [2021-03-26 13:22:41,686 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 197 [2021-03-26 13:22:41,687 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 48 transitions, 255 flow [2021-03-26 13:22:41,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 10.066666666666666) internal successors, (151), 15 states have internal predecessors, (151), 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) [2021-03-26 13:22:41,687 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:22:41,688 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:22:41,688 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 13:22:41,688 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:22:41,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:22:41,688 INFO L82 PathProgramCache]: Analyzing trace with hash 515928769, now seen corresponding path program 2 times [2021-03-26 13:22:41,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:22:41,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284038349] [2021-03-26 13:22:41,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:22:41,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:22:41,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:41,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:41,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:41,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:41,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:41,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:41,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:41,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:41,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:41,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:41,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:41,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:41,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:41,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:41,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:41,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:41,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:41,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:41,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:22:41,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284038349] [2021-03-26 13:22:41,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:22:41,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-26 13:22:41,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992116340] [2021-03-26 13:22:41,760 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-26 13:22:41,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:22:41,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-26 13:22:41,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-03-26 13:22:41,761 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2021-03-26 13:22:41,761 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 48 transitions, 255 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:22:41,761 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:22:41,761 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2021-03-26 13:22:41,762 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:22:42,219 INFO L129 PetriNetUnfolder]: 122/417 cut-off events. [2021-03-26 13:22:42,220 INFO L130 PetriNetUnfolder]: For 1494/1494 co-relation queries the response was YES. [2021-03-26 13:22:42,221 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1604 conditions, 417 events. 122/417 cut-off events. For 1494/1494 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2699 event pairs, 7 based on Foata normal form. 2/419 useless extension candidates. Maximal degree in co-relation 1541. Up to 134 conditions per place. [2021-03-26 13:22:42,223 INFO L132 encePairwiseOnDemand]: 14/36 looper letters, 68 selfloop transitions, 68 changer transitions 8/148 dead transitions. [2021-03-26 13:22:42,223 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 148 transitions, 1209 flow [2021-03-26 13:22:42,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-03-26 13:22:42,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-03-26 13:22:42,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 302 transitions. [2021-03-26 13:22:42,226 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3994708994708995 [2021-03-26 13:22:42,226 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 302 transitions. [2021-03-26 13:22:42,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 302 transitions. [2021-03-26 13:22:42,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:22:42,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 302 transitions. [2021-03-26 13:22:42,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 14.380952380952381) internal successors, (302), 21 states have internal predecessors, (302), 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) [2021-03-26 13:22:42,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 36.0) internal successors, (792), 22 states have internal predecessors, (792), 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) [2021-03-26 13:22:42,230 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 36.0) internal successors, (792), 22 states have internal predecessors, (792), 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) [2021-03-26 13:22:42,230 INFO L185 Difference]: Start difference. First operand has 44 places, 48 transitions, 255 flow. Second operand 21 states and 302 transitions. [2021-03-26 13:22:42,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 148 transitions, 1209 flow [2021-03-26 13:22:42,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 148 transitions, 1039 flow, removed 85 selfloop flow, removed 6 redundant places. [2021-03-26 13:22:42,241 INFO L241 Difference]: Finished difference. Result has 72 places, 104 transitions, 851 flow [2021-03-26 13:22:42,241 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=851, PETRI_PLACES=72, PETRI_TRANSITIONS=104} [2021-03-26 13:22:42,242 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 47 predicate places. [2021-03-26 13:22:42,242 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:22:42,242 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 104 transitions, 851 flow [2021-03-26 13:22:42,242 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 104 transitions, 851 flow [2021-03-26 13:22:42,243 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 71 places, 104 transitions, 851 flow [2021-03-26 13:22:42,269 INFO L129 PetriNetUnfolder]: 60/303 cut-off events. [2021-03-26 13:22:42,269 INFO L130 PetriNetUnfolder]: For 1283/1296 co-relation queries the response was YES. [2021-03-26 13:22:42,270 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1204 conditions, 303 events. 60/303 cut-off events. For 1283/1296 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2138 event pairs, 0 based on Foata normal form. 7/305 useless extension candidates. Maximal degree in co-relation 1068. Up to 85 conditions per place. [2021-03-26 13:22:42,273 INFO L142 LiptonReduction]: Number of co-enabled transitions 214 [2021-03-26 13:22:42,388 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-26 13:22:42,389 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-26 13:22:42,389 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 147 [2021-03-26 13:22:42,394 INFO L480 AbstractCegarLoop]: Abstraction has has 71 places, 102 transitions, 848 flow [2021-03-26 13:22:42,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:22:42,395 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:22:42,395 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:22:42,395 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 13:22:42,395 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:22:42,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:22:42,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1292040641, now seen corresponding path program 1 times [2021-03-26 13:22:42,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:22:42,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391487745] [2021-03-26 13:22:42,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:22:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:22:42,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:42,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:22:42,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:42,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:42,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:42,426 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:22:42,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:22:42,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391487745] [2021-03-26 13:22:42,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:22:42,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-26 13:22:42,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295739449] [2021-03-26 13:22:42,428 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:22:42,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:22:42,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:22:42,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:22:42,429 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 39 [2021-03-26 13:22:42,430 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 102 transitions, 848 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2021-03-26 13:22:42,430 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:22:42,430 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 39 [2021-03-26 13:22:42,430 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:22:42,466 INFO L129 PetriNetUnfolder]: 46/267 cut-off events. [2021-03-26 13:22:42,466 INFO L130 PetriNetUnfolder]: For 1329/1342 co-relation queries the response was YES. [2021-03-26 13:22:42,467 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1181 conditions, 267 events. 46/267 cut-off events. For 1329/1342 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1780 event pairs, 0 based on Foata normal form. 29/291 useless extension candidates. Maximal degree in co-relation 1091. Up to 81 conditions per place. [2021-03-26 13:22:42,468 INFO L132 encePairwiseOnDemand]: 37/39 looper letters, 1 selfloop transitions, 1 changer transitions 0/100 dead transitions. [2021-03-26 13:22:42,468 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 100 transitions, 846 flow [2021-03-26 13:22:42,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:22:42,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:22:42,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2021-03-26 13:22:42,474 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9487179487179487 [2021-03-26 13:22:42,474 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 111 transitions. [2021-03-26 13:22:42,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 111 transitions. [2021-03-26 13:22:42,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:22:42,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 111 transitions. [2021-03-26 13:22:42,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2021-03-26 13:22:42,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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) [2021-03-26 13:22:42,477 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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) [2021-03-26 13:22:42,478 INFO L185 Difference]: Start difference. First operand has 71 places, 102 transitions, 848 flow. Second operand 3 states and 111 transitions. [2021-03-26 13:22:42,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 100 transitions, 846 flow [2021-03-26 13:22:42,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 100 transitions, 770 flow, removed 34 selfloop flow, removed 1 redundant places. [2021-03-26 13:22:42,493 INFO L241 Difference]: Finished difference. Result has 72 places, 100 transitions, 768 flow [2021-03-26 13:22:42,493 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=768, PETRI_PLACES=72, PETRI_TRANSITIONS=100} [2021-03-26 13:22:42,494 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 47 predicate places. [2021-03-26 13:22:42,494 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:22:42,494 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 100 transitions, 768 flow [2021-03-26 13:22:42,494 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 100 transitions, 768 flow [2021-03-26 13:22:42,495 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 100 transitions, 768 flow [2021-03-26 13:22:42,516 INFO L129 PetriNetUnfolder]: 45/265 cut-off events. [2021-03-26 13:22:42,516 INFO L130 PetriNetUnfolder]: For 1196/1209 co-relation queries the response was YES. [2021-03-26 13:22:42,517 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1111 conditions, 265 events. 45/265 cut-off events. For 1196/1209 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1807 event pairs, 0 based on Foata normal form. 7/267 useless extension candidates. Maximal degree in co-relation 1080. Up to 75 conditions per place. [2021-03-26 13:22:42,519 INFO L142 LiptonReduction]: Number of co-enabled transitions 184 [2021-03-26 13:22:42,532 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:22:42,532 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:22:42,532 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 38 [2021-03-26 13:22:42,533 INFO L480 AbstractCegarLoop]: Abstraction has has 72 places, 100 transitions, 768 flow [2021-03-26 13:22:42,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2021-03-26 13:22:42,533 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:22:42,533 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:22:42,533 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 13:22:42,534 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:22:42,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:22:42,534 INFO L82 PathProgramCache]: Analyzing trace with hash -2129733205, now seen corresponding path program 1 times [2021-03-26 13:22:42,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:22:42,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067523758] [2021-03-26 13:22:42,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:22:42,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:22:42,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:42,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:42,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:42,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:42,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:42,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:42,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:42,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:42,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:42,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:42,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:42,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:42,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:42,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:42,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:22:42,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067523758] [2021-03-26 13:22:42,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:22:42,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-26 13:22:42,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019440060] [2021-03-26 13:22:42,625 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:22:42,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:22:42,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:22:42,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:22:42,626 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 39 [2021-03-26 13:22:42,627 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 100 transitions, 768 flow. Second operand has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 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) [2021-03-26 13:22:42,627 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:22:42,627 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 39 [2021-03-26 13:22:42,627 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:22:42,767 INFO L129 PetriNetUnfolder]: 101/406 cut-off events. [2021-03-26 13:22:42,767 INFO L130 PetriNetUnfolder]: For 2133/2146 co-relation queries the response was YES. [2021-03-26 13:22:42,768 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2019 conditions, 406 events. 101/406 cut-off events. For 2133/2146 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2785 event pairs, 26 based on Foata normal form. 3/408 useless extension candidates. Maximal degree in co-relation 1985. Up to 285 conditions per place. [2021-03-26 13:22:42,770 INFO L132 encePairwiseOnDemand]: 26/39 looper letters, 93 selfloop transitions, 26 changer transitions 16/138 dead transitions. [2021-03-26 13:22:42,770 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 138 transitions, 1343 flow [2021-03-26 13:22:42,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-26 13:22:42,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-26 13:22:42,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 166 transitions. [2021-03-26 13:22:42,772 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.38694638694638694 [2021-03-26 13:22:42,772 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 166 transitions. [2021-03-26 13:22:42,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 166 transitions. [2021-03-26 13:22:42,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:22:42,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 166 transitions. [2021-03-26 13:22:42,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 15.090909090909092) internal successors, (166), 11 states have internal predecessors, (166), 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) [2021-03-26 13:22:42,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 39.0) internal successors, (468), 12 states have internal predecessors, (468), 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) [2021-03-26 13:22:42,774 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 39.0) internal successors, (468), 12 states have internal predecessors, (468), 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) [2021-03-26 13:22:42,774 INFO L185 Difference]: Start difference. First operand has 72 places, 100 transitions, 768 flow. Second operand 11 states and 166 transitions. [2021-03-26 13:22:42,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 138 transitions, 1343 flow [2021-03-26 13:22:42,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 138 transitions, 1342 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:22:42,786 INFO L241 Difference]: Finished difference. Result has 89 places, 114 transitions, 1023 flow [2021-03-26 13:22:42,786 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1023, PETRI_PLACES=89, PETRI_TRANSITIONS=114} [2021-03-26 13:22:42,786 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 64 predicate places. [2021-03-26 13:22:42,786 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:22:42,786 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 114 transitions, 1023 flow [2021-03-26 13:22:42,786 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 114 transitions, 1023 flow [2021-03-26 13:22:42,787 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 114 transitions, 1023 flow [2021-03-26 13:22:42,813 INFO L129 PetriNetUnfolder]: 46/281 cut-off events. [2021-03-26 13:22:42,813 INFO L130 PetriNetUnfolder]: For 1775/1791 co-relation queries the response was YES. [2021-03-26 13:22:42,814 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1348 conditions, 281 events. 46/281 cut-off events. For 1775/1791 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1981 event pairs, 0 based on Foata normal form. 7/281 useless extension candidates. Maximal degree in co-relation 1308. Up to 82 conditions per place. [2021-03-26 13:22:42,816 INFO L142 LiptonReduction]: Number of co-enabled transitions 188 [2021-03-26 13:22:42,891 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-26 13:22:42,891 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 13:22:42,892 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 106 [2021-03-26 13:22:42,894 INFO L480 AbstractCegarLoop]: Abstraction has has 88 places, 113 transitions, 1037 flow [2021-03-26 13:22:42,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 9 states have internal predecessors, (100), 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) [2021-03-26 13:22:42,894 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:22:42,894 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:22:42,895 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 13:22:42,895 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:22:42,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:22:42,895 INFO L82 PathProgramCache]: Analyzing trace with hash -311435340, now seen corresponding path program 1 times [2021-03-26 13:22:42,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:22:42,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757773562] [2021-03-26 13:22:42,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:22:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:22:42,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:42,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:42,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:42,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:42,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:42,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:42,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:42,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:42,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:42,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:42,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:42,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:42,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:42,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:42,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:42,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:42,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:22:42,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757773562] [2021-03-26 13:22:42,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:22:42,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-26 13:22:42,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967078443] [2021-03-26 13:22:42,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 13:22:42,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:22:42,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 13:22:42,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-03-26 13:22:42,973 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2021-03-26 13:22:42,973 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 113 transitions, 1037 flow. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 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) [2021-03-26 13:22:42,973 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:22:42,973 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2021-03-26 13:22:42,973 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:22:43,147 INFO L129 PetriNetUnfolder]: 95/377 cut-off events. [2021-03-26 13:22:43,147 INFO L130 PetriNetUnfolder]: For 2796/2809 co-relation queries the response was YES. [2021-03-26 13:22:43,170 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2141 conditions, 377 events. 95/377 cut-off events. For 2796/2809 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2498 event pairs, 26 based on Foata normal form. 1/377 useless extension candidates. Maximal degree in co-relation 2098. Up to 283 conditions per place. [2021-03-26 13:22:43,172 INFO L132 encePairwiseOnDemand]: 25/42 looper letters, 91 selfloop transitions, 24 changer transitions 8/126 dead transitions. [2021-03-26 13:22:43,172 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 126 transitions, 1404 flow [2021-03-26 13:22:43,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-26 13:22:43,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-26 13:22:43,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 185 transitions. [2021-03-26 13:22:43,174 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.33882783882783885 [2021-03-26 13:22:43,174 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 185 transitions. [2021-03-26 13:22:43,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 185 transitions. [2021-03-26 13:22:43,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:22:43,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 185 transitions. [2021-03-26 13:22:43,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 14.23076923076923) internal successors, (185), 13 states have internal predecessors, (185), 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) [2021-03-26 13:22:43,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 42.0) internal successors, (588), 14 states have internal predecessors, (588), 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) [2021-03-26 13:22:43,177 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 42.0) internal successors, (588), 14 states have internal predecessors, (588), 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) [2021-03-26 13:22:43,177 INFO L185 Difference]: Start difference. First operand has 88 places, 113 transitions, 1037 flow. Second operand 13 states and 185 transitions. [2021-03-26 13:22:43,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 126 transitions, 1404 flow [2021-03-26 13:22:43,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 126 transitions, 1338 flow, removed 31 selfloop flow, removed 2 redundant places. [2021-03-26 13:22:43,192 INFO L241 Difference]: Finished difference. Result has 104 places, 111 transitions, 1027 flow [2021-03-26 13:22:43,192 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=973, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1027, PETRI_PLACES=104, PETRI_TRANSITIONS=111} [2021-03-26 13:22:43,192 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 79 predicate places. [2021-03-26 13:22:43,192 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:22:43,193 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 111 transitions, 1027 flow [2021-03-26 13:22:43,199 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 111 transitions, 1027 flow [2021-03-26 13:22:43,200 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 101 places, 111 transitions, 1027 flow [2021-03-26 13:22:43,226 INFO L129 PetriNetUnfolder]: 45/281 cut-off events. [2021-03-26 13:22:43,227 INFO L130 PetriNetUnfolder]: For 1975/1993 co-relation queries the response was YES. [2021-03-26 13:22:43,228 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1410 conditions, 281 events. 45/281 cut-off events. For 1975/1993 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1984 event pairs, 0 based on Foata normal form. 7/282 useless extension candidates. Maximal degree in co-relation 1364. Up to 78 conditions per place. [2021-03-26 13:22:43,230 INFO L142 LiptonReduction]: Number of co-enabled transitions 184 [2021-03-26 13:22:43,235 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:22:43,235 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:22:43,235 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 43 [2021-03-26 13:22:43,238 INFO L480 AbstractCegarLoop]: Abstraction has has 101 places, 111 transitions, 1027 flow [2021-03-26 13:22:43,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 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) [2021-03-26 13:22:43,238 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:22:43,238 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:22:43,238 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-26 13:22:43,239 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:22:43,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:22:43,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1192029992, now seen corresponding path program 1 times [2021-03-26 13:22:43,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:22:43,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915669623] [2021-03-26 13:22:43,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:22:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:22:43,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:43,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:43,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:43,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:43,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:43,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:43,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:43,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:43,283 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:43,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:43,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:22:43,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915669623] [2021-03-26 13:22:43,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:22:43,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 13:22:43,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767438985] [2021-03-26 13:22:43,290 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:22:43,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:22:43,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:22:43,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:22:43,290 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2021-03-26 13:22:43,291 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 111 transitions, 1027 flow. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 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) [2021-03-26 13:22:43,291 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:22:43,291 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2021-03-26 13:22:43,291 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:22:43,423 INFO L129 PetriNetUnfolder]: 100/381 cut-off events. [2021-03-26 13:22:43,423 INFO L130 PetriNetUnfolder]: For 3102/3102 co-relation queries the response was YES. [2021-03-26 13:22:43,425 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2242 conditions, 381 events. 100/381 cut-off events. For 3102/3102 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2442 event pairs, 30 based on Foata normal form. 1/382 useless extension candidates. Maximal degree in co-relation 2148. Up to 292 conditions per place. [2021-03-26 13:22:43,427 INFO L132 encePairwiseOnDemand]: 31/42 looper letters, 95 selfloop transitions, 19 changer transitions 5/122 dead transitions. [2021-03-26 13:22:43,427 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 122 transitions, 1359 flow [2021-03-26 13:22:43,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-26 13:22:43,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-26 13:22:43,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2021-03-26 13:22:43,428 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2021-03-26 13:22:43,429 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 140 transitions. [2021-03-26 13:22:43,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 140 transitions. [2021-03-26 13:22:43,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:22:43,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 140 transitions. [2021-03-26 13:22:43,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 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) [2021-03-26 13:22:43,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 42.0) internal successors, (420), 10 states have internal predecessors, (420), 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) [2021-03-26 13:22:43,430 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 42.0) internal successors, (420), 10 states have internal predecessors, (420), 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) [2021-03-26 13:22:43,430 INFO L185 Difference]: Start difference. First operand has 101 places, 111 transitions, 1027 flow. Second operand 9 states and 140 transitions. [2021-03-26 13:22:43,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 122 transitions, 1359 flow [2021-03-26 13:22:43,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 122 transitions, 1263 flow, removed 13 selfloop flow, removed 15 redundant places. [2021-03-26 13:22:43,448 INFO L241 Difference]: Finished difference. Result has 97 places, 111 transitions, 995 flow [2021-03-26 13:22:43,448 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=945, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=995, PETRI_PLACES=97, PETRI_TRANSITIONS=111} [2021-03-26 13:22:43,449 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 72 predicate places. [2021-03-26 13:22:43,449 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:22:43,449 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 111 transitions, 995 flow [2021-03-26 13:22:43,449 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 111 transitions, 995 flow [2021-03-26 13:22:43,450 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 93 places, 111 transitions, 995 flow [2021-03-26 13:22:43,473 INFO L129 PetriNetUnfolder]: 44/275 cut-off events. [2021-03-26 13:22:43,474 INFO L130 PetriNetUnfolder]: For 1667/1682 co-relation queries the response was YES. [2021-03-26 13:22:43,475 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1308 conditions, 275 events. 44/275 cut-off events. For 1667/1682 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1935 event pairs, 1 based on Foata normal form. 6/273 useless extension candidates. Maximal degree in co-relation 1265. Up to 76 conditions per place. [2021-03-26 13:22:43,477 INFO L142 LiptonReduction]: Number of co-enabled transitions 180 [2021-03-26 13:22:43,498 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:22:43,499 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:22:43,499 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 50 [2021-03-26 13:22:43,499 INFO L480 AbstractCegarLoop]: Abstraction has has 92 places, 110 transitions, 989 flow [2021-03-26 13:22:43,499 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 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) [2021-03-26 13:22:43,499 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:22:43,500 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:22:43,500 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-26 13:22:43,500 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:22:43,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:22:43,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1312139756, now seen corresponding path program 1 times [2021-03-26 13:22:43,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:22:43,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545572648] [2021-03-26 13:22:43,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:22:43,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:22:43,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:43,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:43,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:43,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:43,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:43,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:43,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:43,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:43,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:43,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:43,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:43,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:43,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:43,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:43,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:22:43,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545572648] [2021-03-26 13:22:43,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:22:43,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-26 13:22:43,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750318080] [2021-03-26 13:22:43,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:22:43,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:22:43,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:22:43,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:22:43,572 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2021-03-26 13:22:43,572 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 110 transitions, 989 flow. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 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) [2021-03-26 13:22:43,573 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:22:43,573 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2021-03-26 13:22:43,573 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:22:43,724 INFO L129 PetriNetUnfolder]: 99/371 cut-off events. [2021-03-26 13:22:43,724 INFO L130 PetriNetUnfolder]: For 2583/2583 co-relation queries the response was YES. [2021-03-26 13:22:43,725 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2101 conditions, 371 events. 99/371 cut-off events. For 2583/2583 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2345 event pairs, 30 based on Foata normal form. 1/372 useless extension candidates. Maximal degree in co-relation 2043. Up to 291 conditions per place. [2021-03-26 13:22:43,727 INFO L132 encePairwiseOnDemand]: 32/43 looper letters, 94 selfloop transitions, 15 changer transitions 4/115 dead transitions. [2021-03-26 13:22:43,727 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 115 transitions, 1249 flow [2021-03-26 13:22:43,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-26 13:22:43,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-26 13:22:43,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 116 transitions. [2021-03-26 13:22:43,729 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3372093023255814 [2021-03-26 13:22:43,729 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 116 transitions. [2021-03-26 13:22:43,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 116 transitions. [2021-03-26 13:22:43,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:22:43,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 116 transitions. [2021-03-26 13:22:43,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:22:43,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 43.0) internal successors, (387), 9 states have internal predecessors, (387), 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) [2021-03-26 13:22:43,731 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 43.0) internal successors, (387), 9 states have internal predecessors, (387), 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) [2021-03-26 13:22:43,731 INFO L185 Difference]: Start difference. First operand has 92 places, 110 transitions, 989 flow. Second operand 8 states and 116 transitions. [2021-03-26 13:22:43,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 115 transitions, 1249 flow [2021-03-26 13:22:43,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 115 transitions, 1204 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-03-26 13:22:43,747 INFO L241 Difference]: Finished difference. Result has 96 places, 107 transitions, 941 flow [2021-03-26 13:22:43,747 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=944, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=941, PETRI_PLACES=96, PETRI_TRANSITIONS=107} [2021-03-26 13:22:43,747 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 71 predicate places. [2021-03-26 13:22:43,747 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:22:43,748 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 107 transitions, 941 flow [2021-03-26 13:22:43,748 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 107 transitions, 941 flow [2021-03-26 13:22:43,749 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 107 transitions, 941 flow [2021-03-26 13:22:43,772 INFO L129 PetriNetUnfolder]: 44/267 cut-off events. [2021-03-26 13:22:43,773 INFO L130 PetriNetUnfolder]: For 1622/1637 co-relation queries the response was YES. [2021-03-26 13:22:43,774 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1269 conditions, 267 events. 44/267 cut-off events. For 1622/1637 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1848 event pairs, 1 based on Foata normal form. 6/265 useless extension candidates. Maximal degree in co-relation 1226. Up to 74 conditions per place. [2021-03-26 13:22:43,776 INFO L142 LiptonReduction]: Number of co-enabled transitions 180 [2021-03-26 13:22:43,780 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:22:43,780 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:22:43,781 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 34 [2021-03-26 13:22:43,781 INFO L480 AbstractCegarLoop]: Abstraction has has 89 places, 107 transitions, 941 flow [2021-03-26 13:22:43,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 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) [2021-03-26 13:22:43,782 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:22:43,782 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:22:43,782 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-26 13:22:43,782 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:22:43,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:22:43,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1298784163, now seen corresponding path program 1 times [2021-03-26 13:22:43,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:22:43,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864234013] [2021-03-26 13:22:43,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:22:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:22:43,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:43,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:43,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:43,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:43,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:43,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:22:43,843 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-26 13:22:43,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:22:43,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:43,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:43,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:43,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:43,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:43,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:43,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:43,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:43,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:22:43,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864234013] [2021-03-26 13:22:43,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:22:43,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-26 13:22:43,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219198285] [2021-03-26 13:22:43,895 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 13:22:43,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:22:43,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 13:22:43,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-03-26 13:22:43,896 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2021-03-26 13:22:43,896 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 107 transitions, 941 flow. Second operand has 10 states, 10 states have (on average 10.1) internal successors, (101), 10 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:22:43,896 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:22:43,896 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2021-03-26 13:22:43,897 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:22:44,065 INFO L129 PetriNetUnfolder]: 98/368 cut-off events. [2021-03-26 13:22:44,065 INFO L130 PetriNetUnfolder]: For 2520/2520 co-relation queries the response was YES. [2021-03-26 13:22:44,067 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2068 conditions, 368 events. 98/368 cut-off events. For 2520/2520 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2311 event pairs, 31 based on Foata normal form. 1/369 useless extension candidates. Maximal degree in co-relation 2023. Up to 288 conditions per place. [2021-03-26 13:22:44,069 INFO L132 encePairwiseOnDemand]: 32/43 looper letters, 91 selfloop transitions, 14 changer transitions 6/113 dead transitions. [2021-03-26 13:22:44,069 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 113 transitions, 1208 flow [2021-03-26 13:22:44,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-26 13:22:44,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-26 13:22:44,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2021-03-26 13:22:44,070 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.32299741602067183 [2021-03-26 13:22:44,070 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 125 transitions. [2021-03-26 13:22:44,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 125 transitions. [2021-03-26 13:22:44,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:22:44,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 125 transitions. [2021-03-26 13:22:44,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:22:44,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 43.0) internal successors, (430), 10 states have internal predecessors, (430), 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) [2021-03-26 13:22:44,072 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 43.0) internal successors, (430), 10 states have internal predecessors, (430), 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) [2021-03-26 13:22:44,072 INFO L185 Difference]: Start difference. First operand has 89 places, 107 transitions, 941 flow. Second operand 9 states and 125 transitions. [2021-03-26 13:22:44,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 113 transitions, 1208 flow [2021-03-26 13:22:44,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 113 transitions, 1170 flow, removed 4 selfloop flow, removed 7 redundant places. [2021-03-26 13:22:44,086 INFO L241 Difference]: Finished difference. Result has 93 places, 103 transitions, 905 flow [2021-03-26 13:22:44,087 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=903, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=905, PETRI_PLACES=93, PETRI_TRANSITIONS=103} [2021-03-26 13:22:44,087 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 68 predicate places. [2021-03-26 13:22:44,087 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:22:44,087 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 103 transitions, 905 flow [2021-03-26 13:22:44,087 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 103 transitions, 905 flow [2021-03-26 13:22:44,088 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 103 transitions, 905 flow [2021-03-26 13:22:44,114 INFO L129 PetriNetUnfolder]: 44/262 cut-off events. [2021-03-26 13:22:44,114 INFO L130 PetriNetUnfolder]: For 1569/1584 co-relation queries the response was YES. [2021-03-26 13:22:44,115 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1241 conditions, 262 events. 44/262 cut-off events. For 1569/1584 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1781 event pairs, 1 based on Foata normal form. 6/261 useless extension candidates. Maximal degree in co-relation 1204. Up to 73 conditions per place. [2021-03-26 13:22:44,117 INFO L142 LiptonReduction]: Number of co-enabled transitions 180 [2021-03-26 13:22:44,121 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:22:44,122 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:22:44,122 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 35 [2021-03-26 13:22:44,122 INFO L480 AbstractCegarLoop]: Abstraction has has 85 places, 103 transitions, 905 flow [2021-03-26 13:22:44,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 10.1) internal successors, (101), 10 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:22:44,123 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:22:44,123 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:22:44,123 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-26 13:22:44,123 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:22:44,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:22:44,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1387254801, now seen corresponding path program 1 times [2021-03-26 13:22:44,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:22:44,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292241123] [2021-03-26 13:22:44,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:22:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:22:44,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:44,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:44,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:44,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:44,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:44,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:44,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:44,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:44,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:44,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:44,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:44,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:44,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:44,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:44,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:44,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:44,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:44,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:44,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:22:44,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292241123] [2021-03-26 13:22:44,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:22:44,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-26 13:22:44,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127337839] [2021-03-26 13:22:44,205 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-26 13:22:44,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:22:44,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-26 13:22:44,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-03-26 13:22:44,206 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2021-03-26 13:22:44,206 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 103 transitions, 905 flow. Second operand has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 11 states have internal predecessors, (111), 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) [2021-03-26 13:22:44,206 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:22:44,207 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2021-03-26 13:22:44,207 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:22:44,366 INFO L129 PetriNetUnfolder]: 97/365 cut-off events. [2021-03-26 13:22:44,367 INFO L130 PetriNetUnfolder]: For 2529/2529 co-relation queries the response was YES. [2021-03-26 13:22:44,368 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2049 conditions, 365 events. 97/365 cut-off events. For 2529/2529 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2282 event pairs, 31 based on Foata normal form. 1/366 useless extension candidates. Maximal degree in co-relation 2010. Up to 286 conditions per place. [2021-03-26 13:22:44,370 INFO L132 encePairwiseOnDemand]: 31/43 looper letters, 88 selfloop transitions, 12 changer transitions 8/110 dead transitions. [2021-03-26 13:22:44,370 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 110 transitions, 1188 flow [2021-03-26 13:22:44,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-26 13:22:44,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-26 13:22:44,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2021-03-26 13:22:44,371 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.29809725158562367 [2021-03-26 13:22:44,371 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 141 transitions. [2021-03-26 13:22:44,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 141 transitions. [2021-03-26 13:22:44,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:22:44,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 141 transitions. [2021-03-26 13:22:44,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 states have internal predecessors, (141), 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) [2021-03-26 13:22:44,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 43.0) internal successors, (516), 12 states have internal predecessors, (516), 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) [2021-03-26 13:22:44,373 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 43.0) internal successors, (516), 12 states have internal predecessors, (516), 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) [2021-03-26 13:22:44,374 INFO L185 Difference]: Start difference. First operand has 85 places, 103 transitions, 905 flow. Second operand 11 states and 141 transitions. [2021-03-26 13:22:44,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 110 transitions, 1188 flow [2021-03-26 13:22:44,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 110 transitions, 1148 flow, removed 6 selfloop flow, removed 8 redundant places. [2021-03-26 13:22:44,386 INFO L241 Difference]: Finished difference. Result has 91 places, 98 transitions, 853 flow [2021-03-26 13:22:44,387 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=853, PETRI_PLACES=91, PETRI_TRANSITIONS=98} [2021-03-26 13:22:44,387 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 66 predicate places. [2021-03-26 13:22:44,387 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:22:44,387 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 98 transitions, 853 flow [2021-03-26 13:22:44,387 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 98 transitions, 853 flow [2021-03-26 13:22:44,388 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 79 places, 98 transitions, 853 flow [2021-03-26 13:22:44,419 INFO L129 PetriNetUnfolder]: 41/258 cut-off events. [2021-03-26 13:22:44,419 INFO L130 PetriNetUnfolder]: For 1814/1827 co-relation queries the response was YES. [2021-03-26 13:22:44,420 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1263 conditions, 258 events. 41/258 cut-off events. For 1814/1827 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1804 event pairs, 2 based on Foata normal form. 6/258 useless extension candidates. Maximal degree in co-relation 1222. Up to 75 conditions per place. [2021-03-26 13:22:44,422 INFO L142 LiptonReduction]: Number of co-enabled transitions 180 [2021-03-26 13:22:44,443 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-26 13:22:44,443 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:22:44,443 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 56 [2021-03-26 13:22:44,444 INFO L480 AbstractCegarLoop]: Abstraction has has 79 places, 98 transitions, 857 flow [2021-03-26 13:22:44,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 11 states have internal predecessors, (111), 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) [2021-03-26 13:22:44,445 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:22:44,445 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:22:44,445 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-26 13:22:44,445 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:22:44,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:22:44,445 INFO L82 PathProgramCache]: Analyzing trace with hash 507451181, now seen corresponding path program 1 times [2021-03-26 13:22:44,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:22:44,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281170960] [2021-03-26 13:22:44,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:22:44,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:22:44,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:44,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:44,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:44,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:44,466 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:44,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:44,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:44,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:44,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:44,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:44,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:44,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:44,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:44,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:44,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:22:44,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281170960] [2021-03-26 13:22:44,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:22:44,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-26 13:22:44,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883427767] [2021-03-26 13:22:44,494 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:22:44,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:22:44,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:22:44,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:22:44,495 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2021-03-26 13:22:44,495 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 98 transitions, 857 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 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) [2021-03-26 13:22:44,495 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:22:44,495 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2021-03-26 13:22:44,495 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:22:44,668 INFO L129 PetriNetUnfolder]: 109/447 cut-off events. [2021-03-26 13:22:44,669 INFO L130 PetriNetUnfolder]: For 3743/3752 co-relation queries the response was YES. [2021-03-26 13:22:44,671 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2571 conditions, 447 events. 109/447 cut-off events. For 3743/3752 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3221 event pairs, 22 based on Foata normal form. 9/455 useless extension candidates. Maximal degree in co-relation 2527. Up to 273 conditions per place. [2021-03-26 13:22:44,673 INFO L132 encePairwiseOnDemand]: 28/44 looper letters, 93 selfloop transitions, 41 changer transitions 22/159 dead transitions. [2021-03-26 13:22:44,673 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 159 transitions, 1730 flow [2021-03-26 13:22:44,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-26 13:22:44,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-26 13:22:44,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2021-03-26 13:22:44,675 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.35537190082644626 [2021-03-26 13:22:44,675 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 172 transitions. [2021-03-26 13:22:44,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 172 transitions. [2021-03-26 13:22:44,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:22:44,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 172 transitions. [2021-03-26 13:22:44,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 15.636363636363637) internal successors, (172), 11 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) [2021-03-26 13:22:44,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 44.0) internal successors, (528), 12 states have internal predecessors, (528), 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) [2021-03-26 13:22:44,679 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 44.0) internal successors, (528), 12 states have internal predecessors, (528), 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) [2021-03-26 13:22:44,679 INFO L185 Difference]: Start difference. First operand has 79 places, 98 transitions, 857 flow. Second operand 11 states and 172 transitions. [2021-03-26 13:22:44,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 159 transitions, 1730 flow [2021-03-26 13:22:44,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 159 transitions, 1662 flow, removed 20 selfloop flow, removed 9 redundant places. [2021-03-26 13:22:44,697 INFO L241 Difference]: Finished difference. Result has 86 places, 118 transitions, 1182 flow [2021-03-26 13:22:44,698 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1182, PETRI_PLACES=86, PETRI_TRANSITIONS=118} [2021-03-26 13:22:44,698 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 61 predicate places. [2021-03-26 13:22:44,698 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:22:44,699 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 118 transitions, 1182 flow [2021-03-26 13:22:44,699 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 118 transitions, 1182 flow [2021-03-26 13:22:44,700 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 118 transitions, 1182 flow [2021-03-26 13:22:44,733 INFO L129 PetriNetUnfolder]: 49/320 cut-off events. [2021-03-26 13:22:44,733 INFO L130 PetriNetUnfolder]: For 2476/2498 co-relation queries the response was YES. [2021-03-26 13:22:44,734 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1644 conditions, 320 events. 49/320 cut-off events. For 2476/2498 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2425 event pairs, 1 based on Foata normal form. 13/329 useless extension candidates. Maximal degree in co-relation 1604. Up to 96 conditions per place. [2021-03-26 13:22:44,737 INFO L142 LiptonReduction]: Number of co-enabled transitions 186 [2021-03-26 13:22:44,812 INFO L154 LiptonReduction]: Checked pairs total: 3 [2021-03-26 13:22:44,812 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-26 13:22:44,812 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 114 [2021-03-26 13:22:44,813 INFO L480 AbstractCegarLoop]: Abstraction has has 86 places, 118 transitions, 1209 flow [2021-03-26 13:22:44,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 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) [2021-03-26 13:22:44,813 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:22:44,813 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:22:44,813 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-26 13:22:44,813 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:22:44,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:22:44,814 INFO L82 PathProgramCache]: Analyzing trace with hash 510076957, now seen corresponding path program 2 times [2021-03-26 13:22:44,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:22:44,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601817115] [2021-03-26 13:22:44,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:22:44,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:22:44,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:44,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:44,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:44,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:44,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:44,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:44,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:44,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:44,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:44,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:44,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:44,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:44,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:44,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:44,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:22:44,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601817115] [2021-03-26 13:22:44,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:22:44,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-26 13:22:44,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071483281] [2021-03-26 13:22:44,866 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:22:44,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:22:44,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:22:44,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:22:44,867 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 48 [2021-03-26 13:22:44,867 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 118 transitions, 1209 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 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) [2021-03-26 13:22:44,867 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:22:44,867 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 48 [2021-03-26 13:22:44,868 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:22:45,114 INFO L129 PetriNetUnfolder]: 103/460 cut-off events. [2021-03-26 13:22:45,114 INFO L130 PetriNetUnfolder]: For 3977/3977 co-relation queries the response was YES. [2021-03-26 13:22:45,116 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2718 conditions, 460 events. 103/460 cut-off events. For 3977/3977 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3384 event pairs, 28 based on Foata normal form. 5/465 useless extension candidates. Maximal degree in co-relation 2384. Up to 279 conditions per place. [2021-03-26 13:22:45,118 INFO L132 encePairwiseOnDemand]: 35/48 looper letters, 103 selfloop transitions, 35 changer transitions 25/165 dead transitions. [2021-03-26 13:22:45,119 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 165 transitions, 2112 flow [2021-03-26 13:22:45,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-26 13:22:45,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-03-26 13:22:45,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 203 transitions. [2021-03-26 13:22:45,121 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3020833333333333 [2021-03-26 13:22:45,121 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 203 transitions. [2021-03-26 13:22:45,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 203 transitions. [2021-03-26 13:22:45,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:22:45,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 203 transitions. [2021-03-26 13:22:45,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 14.5) internal successors, (203), 14 states have internal predecessors, (203), 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) [2021-03-26 13:22:45,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 48.0) internal successors, (720), 15 states have internal predecessors, (720), 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) [2021-03-26 13:22:45,125 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 48.0) internal successors, (720), 15 states have internal predecessors, (720), 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) [2021-03-26 13:22:45,125 INFO L185 Difference]: Start difference. First operand has 86 places, 118 transitions, 1209 flow. Second operand 14 states and 203 transitions. [2021-03-26 13:22:45,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 165 transitions, 2112 flow [2021-03-26 13:22:45,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 165 transitions, 1860 flow, removed 115 selfloop flow, removed 3 redundant places. [2021-03-26 13:22:45,147 INFO L241 Difference]: Finished difference. Result has 107 places, 126 transitions, 1356 flow [2021-03-26 13:22:45,147 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1111, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1356, PETRI_PLACES=107, PETRI_TRANSITIONS=126} [2021-03-26 13:22:45,147 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 82 predicate places. [2021-03-26 13:22:45,147 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:22:45,148 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 126 transitions, 1356 flow [2021-03-26 13:22:45,148 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 126 transitions, 1356 flow [2021-03-26 13:22:45,149 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 106 places, 126 transitions, 1356 flow [2021-03-26 13:22:45,180 INFO L129 PetriNetUnfolder]: 46/325 cut-off events. [2021-03-26 13:22:45,180 INFO L130 PetriNetUnfolder]: For 2764/2782 co-relation queries the response was YES. [2021-03-26 13:22:45,182 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1751 conditions, 325 events. 46/325 cut-off events. For 2764/2782 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2454 event pairs, 3 based on Foata normal form. 12/333 useless extension candidates. Maximal degree in co-relation 1701. Up to 89 conditions per place. [2021-03-26 13:22:45,185 INFO L142 LiptonReduction]: Number of co-enabled transitions 192 [2021-03-26 13:22:45,222 INFO L154 LiptonReduction]: Checked pairs total: 1 [2021-03-26 13:22:45,223 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 13:22:45,223 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 76 [2021-03-26 13:22:45,225 INFO L480 AbstractCegarLoop]: Abstraction has has 105 places, 125 transitions, 1362 flow [2021-03-26 13:22:45,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 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) [2021-03-26 13:22:45,225 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:22:45,226 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:22:45,226 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-26 13:22:45,226 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:22:45,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:22:45,226 INFO L82 PathProgramCache]: Analyzing trace with hash -102811392, now seen corresponding path program 1 times [2021-03-26 13:22:45,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:22:45,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927673550] [2021-03-26 13:22:45,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:22:45,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:22:45,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:45,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:45,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:45,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:45,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:45,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:45,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:45,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:45,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:45,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:45,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:45,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:45,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:45,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:45,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:45,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:45,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:22:45,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927673550] [2021-03-26 13:22:45,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:22:45,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-26 13:22:45,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307154553] [2021-03-26 13:22:45,289 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 13:22:45,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:22:45,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 13:22:45,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-03-26 13:22:45,290 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2021-03-26 13:22:45,290 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 125 transitions, 1362 flow. Second operand has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 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) [2021-03-26 13:22:45,290 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:22:45,290 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2021-03-26 13:22:45,290 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:22:45,459 INFO L129 PetriNetUnfolder]: 99/421 cut-off events. [2021-03-26 13:22:45,459 INFO L130 PetriNetUnfolder]: For 4089/4089 co-relation queries the response was YES. [2021-03-26 13:22:45,461 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2633 conditions, 421 events. 99/421 cut-off events. For 4089/4089 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2949 event pairs, 33 based on Foata normal form. 2/423 useless extension candidates. Maximal degree in co-relation 2531. Up to 313 conditions per place. [2021-03-26 13:22:45,463 INFO L132 encePairwiseOnDemand]: 30/50 looper letters, 92 selfloop transitions, 25 changer transitions 21/140 dead transitions. [2021-03-26 13:22:45,463 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 140 transitions, 1765 flow [2021-03-26 13:22:45,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-26 13:22:45,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-26 13:22:45,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 153 transitions. [2021-03-26 13:22:45,465 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2781818181818182 [2021-03-26 13:22:45,465 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 153 transitions. [2021-03-26 13:22:45,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 153 transitions. [2021-03-26 13:22:45,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:22:45,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 153 transitions. [2021-03-26 13:22:45,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 13.909090909090908) internal successors, (153), 11 states have internal predecessors, (153), 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) [2021-03-26 13:22:45,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 50.0) internal successors, (600), 12 states have internal predecessors, (600), 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) [2021-03-26 13:22:45,467 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 50.0) internal successors, (600), 12 states have internal predecessors, (600), 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) [2021-03-26 13:22:45,467 INFO L185 Difference]: Start difference. First operand has 105 places, 125 transitions, 1362 flow. Second operand 11 states and 153 transitions. [2021-03-26 13:22:45,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 140 transitions, 1765 flow [2021-03-26 13:22:45,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 140 transitions, 1655 flow, removed 40 selfloop flow, removed 6 redundant places. [2021-03-26 13:22:45,492 INFO L241 Difference]: Finished difference. Result has 113 places, 115 transitions, 1177 flow [2021-03-26 13:22:45,493 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1255, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1177, PETRI_PLACES=113, PETRI_TRANSITIONS=115} [2021-03-26 13:22:45,493 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 88 predicate places. [2021-03-26 13:22:45,493 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:22:45,493 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 115 transitions, 1177 flow [2021-03-26 13:22:45,494 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 115 transitions, 1177 flow [2021-03-26 13:22:45,494 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 107 places, 115 transitions, 1177 flow [2021-03-26 13:22:45,520 INFO L129 PetriNetUnfolder]: 42/298 cut-off events. [2021-03-26 13:22:45,520 INFO L130 PetriNetUnfolder]: For 1883/1898 co-relation queries the response was YES. [2021-03-26 13:22:45,521 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1495 conditions, 298 events. 42/298 cut-off events. For 1883/1898 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2197 event pairs, 2 based on Foata normal form. 9/301 useless extension candidates. Maximal degree in co-relation 1445. Up to 79 conditions per place. [2021-03-26 13:22:45,523 INFO L142 LiptonReduction]: Number of co-enabled transitions 188 [2021-03-26 13:22:45,548 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-26 13:22:45,548 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:22:45,548 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 55 [2021-03-26 13:22:45,549 INFO L480 AbstractCegarLoop]: Abstraction has has 106 places, 114 transitions, 1173 flow [2021-03-26 13:22:45,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 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) [2021-03-26 13:22:45,550 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:22:45,550 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:22:45,550 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-26 13:22:45,550 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:22:45,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:22:45,550 INFO L82 PathProgramCache]: Analyzing trace with hash 509423784, now seen corresponding path program 1 times [2021-03-26 13:22:45,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:22:45,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513466091] [2021-03-26 13:22:45,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:22:45,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:22:45,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:45,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:45,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:45,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:45,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:45,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:45,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:45,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:45,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:45,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:45,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:45,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:45,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:45,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:45,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:22:45,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513466091] [2021-03-26 13:22:45,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:22:45,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-26 13:22:45,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774377068] [2021-03-26 13:22:45,598 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:22:45,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:22:45,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:22:45,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:22:45,599 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 51 [2021-03-26 13:22:45,600 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 114 transitions, 1173 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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) [2021-03-26 13:22:45,600 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:22:45,600 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 51 [2021-03-26 13:22:45,600 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:22:45,810 INFO L129 PetriNetUnfolder]: 95/385 cut-off events. [2021-03-26 13:22:45,810 INFO L130 PetriNetUnfolder]: For 2926/2926 co-relation queries the response was YES. [2021-03-26 13:22:45,812 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2282 conditions, 385 events. 95/385 cut-off events. For 2926/2926 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2557 event pairs, 28 based on Foata normal form. 2/387 useless extension candidates. Maximal degree in co-relation 2224. Up to 269 conditions per place. [2021-03-26 13:22:45,814 INFO L132 encePairwiseOnDemand]: 37/51 looper letters, 89 selfloop transitions, 14 changer transitions 26/131 dead transitions. [2021-03-26 13:22:45,814 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 131 transitions, 1589 flow [2021-03-26 13:22:45,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-26 13:22:45,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-26 13:22:45,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 170 transitions. [2021-03-26 13:22:45,815 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2777777777777778 [2021-03-26 13:22:45,815 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 170 transitions. [2021-03-26 13:22:45,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 170 transitions. [2021-03-26 13:22:45,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:22:45,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 170 transitions. [2021-03-26 13:22:45,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 14.166666666666666) internal successors, (170), 12 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:22:45,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 51.0) internal successors, (663), 13 states have internal predecessors, (663), 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) [2021-03-26 13:22:45,816 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 51.0) internal successors, (663), 13 states have internal predecessors, (663), 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) [2021-03-26 13:22:45,816 INFO L185 Difference]: Start difference. First operand has 106 places, 114 transitions, 1173 flow. Second operand 12 states and 170 transitions. [2021-03-26 13:22:45,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 131 transitions, 1589 flow [2021-03-26 13:22:45,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 131 transitions, 1494 flow, removed 24 selfloop flow, removed 10 redundant places. [2021-03-26 13:22:45,835 INFO L241 Difference]: Finished difference. Result has 110 places, 100 transitions, 956 flow [2021-03-26 13:22:45,835 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=1092, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=956, PETRI_PLACES=110, PETRI_TRANSITIONS=100} [2021-03-26 13:22:45,836 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 85 predicate places. [2021-03-26 13:22:45,836 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:22:45,836 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 100 transitions, 956 flow [2021-03-26 13:22:45,836 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 100 transitions, 956 flow [2021-03-26 13:22:45,837 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 100 transitions, 956 flow [2021-03-26 13:22:45,859 INFO L129 PetriNetUnfolder]: 41/261 cut-off events. [2021-03-26 13:22:45,859 INFO L130 PetriNetUnfolder]: For 1725/1738 co-relation queries the response was YES. [2021-03-26 13:22:45,860 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1297 conditions, 261 events. 41/261 cut-off events. For 1725/1738 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1790 event pairs, 2 based on Foata normal form. 6/262 useless extension candidates. Maximal degree in co-relation 1250. Up to 69 conditions per place. [2021-03-26 13:22:45,862 INFO L142 LiptonReduction]: Number of co-enabled transitions 170 [2021-03-26 13:22:45,867 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:22:45,867 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:22:45,867 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 31 [2021-03-26 13:22:45,868 INFO L480 AbstractCegarLoop]: Abstraction has has 99 places, 100 transitions, 956 flow [2021-03-26 13:22:45,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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) [2021-03-26 13:22:45,868 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:22:45,868 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:22:45,868 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-26 13:22:45,868 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:22:45,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:22:45,869 INFO L82 PathProgramCache]: Analyzing trace with hash -182608333, now seen corresponding path program 1 times [2021-03-26 13:22:45,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:22:45,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044141010] [2021-03-26 13:22:45,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:22:45,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:22:45,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:45,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:45,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:45,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:45,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:45,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:45,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:45,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:45,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:45,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:45,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:45,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:45,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:45,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:45,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:45,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:45,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:22:45,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044141010] [2021-03-26 13:22:45,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:22:45,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-26 13:22:45,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384216004] [2021-03-26 13:22:45,917 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-26 13:22:45,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:22:45,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-26 13:22:45,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-03-26 13:22:45,918 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 51 [2021-03-26 13:22:45,918 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 100 transitions, 956 flow. Second operand has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 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) [2021-03-26 13:22:45,918 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:22:45,918 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 51 [2021-03-26 13:22:45,918 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:22:46,070 INFO L129 PetriNetUnfolder]: 88/346 cut-off events. [2021-03-26 13:22:46,070 INFO L130 PetriNetUnfolder]: For 2574/2574 co-relation queries the response was YES. [2021-03-26 13:22:46,072 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2020 conditions, 346 events. 88/346 cut-off events. For 2574/2574 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2192 event pairs, 23 based on Foata normal form. 1/347 useless extension candidates. Maximal degree in co-relation 1919. Up to 250 conditions per place. [2021-03-26 13:22:46,074 INFO L132 encePairwiseOnDemand]: 33/51 looper letters, 78 selfloop transitions, 29 changer transitions 4/113 dead transitions. [2021-03-26 13:22:46,074 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 113 transitions, 1285 flow [2021-03-26 13:22:46,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-26 13:22:46,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-26 13:22:46,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 152 transitions. [2021-03-26 13:22:46,075 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2709447415329768 [2021-03-26 13:22:46,075 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 152 transitions. [2021-03-26 13:22:46,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 152 transitions. [2021-03-26 13:22:46,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:22:46,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 152 transitions. [2021-03-26 13:22:46,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 13.818181818181818) internal successors, (152), 11 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:22:46,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 51.0) internal successors, (612), 12 states have internal predecessors, (612), 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) [2021-03-26 13:22:46,077 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 51.0) internal successors, (612), 12 states have internal predecessors, (612), 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) [2021-03-26 13:22:46,077 INFO L185 Difference]: Start difference. First operand has 99 places, 100 transitions, 956 flow. Second operand 11 states and 152 transitions. [2021-03-26 13:22:46,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 113 transitions, 1285 flow [2021-03-26 13:22:46,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 113 transitions, 1211 flow, removed 19 selfloop flow, removed 14 redundant places. [2021-03-26 13:22:46,092 INFO L241 Difference]: Finished difference. Result has 97 places, 100 transitions, 956 flow [2021-03-26 13:22:46,092 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=890, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=956, PETRI_PLACES=97, PETRI_TRANSITIONS=100} [2021-03-26 13:22:46,093 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 72 predicate places. [2021-03-26 13:22:46,093 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:22:46,093 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 100 transitions, 956 flow [2021-03-26 13:22:46,093 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 100 transitions, 956 flow [2021-03-26 13:22:46,094 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 95 places, 100 transitions, 956 flow [2021-03-26 13:22:46,115 INFO L129 PetriNetUnfolder]: 40/258 cut-off events. [2021-03-26 13:22:46,115 INFO L130 PetriNetUnfolder]: For 1323/1340 co-relation queries the response was YES. [2021-03-26 13:22:46,116 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1215 conditions, 258 events. 40/258 cut-off events. For 1323/1340 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1753 event pairs, 2 based on Foata normal form. 8/260 useless extension candidates. Maximal degree in co-relation 1175. Up to 68 conditions per place. [2021-03-26 13:22:46,118 INFO L142 LiptonReduction]: Number of co-enabled transitions 164 [2021-03-26 13:22:46,122 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:22:46,122 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:22:46,122 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 29 [2021-03-26 13:22:46,122 INFO L480 AbstractCegarLoop]: Abstraction has has 95 places, 100 transitions, 956 flow [2021-03-26 13:22:46,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 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) [2021-03-26 13:22:46,123 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:22:46,123 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:22:46,123 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-26 13:22:46,123 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:22:46,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:22:46,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1152305383, now seen corresponding path program 2 times [2021-03-26 13:22:46,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:22:46,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306873501] [2021-03-26 13:22:46,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:22:46,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:22:46,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:46,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:46,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:46,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:46,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:46,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:46,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:46,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:46,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:46,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:46,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:46,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:46,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:46,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:46,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:22:46,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306873501] [2021-03-26 13:22:46,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:22:46,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-26 13:22:46,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080678631] [2021-03-26 13:22:46,170 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:22:46,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:22:46,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:22:46,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:22:46,171 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 51 [2021-03-26 13:22:46,172 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 100 transitions, 956 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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) [2021-03-26 13:22:46,172 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:22:46,172 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 51 [2021-03-26 13:22:46,172 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:22:46,324 INFO L129 PetriNetUnfolder]: 86/344 cut-off events. [2021-03-26 13:22:46,324 INFO L130 PetriNetUnfolder]: For 2046/2046 co-relation queries the response was YES. [2021-03-26 13:22:46,325 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1910 conditions, 344 events. 86/344 cut-off events. For 2046/2046 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2170 event pairs, 24 based on Foata normal form. 2/346 useless extension candidates. Maximal degree in co-relation 1831. Up to 249 conditions per place. [2021-03-26 13:22:46,327 INFO L132 encePairwiseOnDemand]: 32/51 looper letters, 75 selfloop transitions, 21 changer transitions 14/112 dead transitions. [2021-03-26 13:22:46,327 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 112 transitions, 1272 flow [2021-03-26 13:22:46,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-26 13:22:46,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-26 13:22:46,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 154 transitions. [2021-03-26 13:22:46,328 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.27450980392156865 [2021-03-26 13:22:46,328 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 154 transitions. [2021-03-26 13:22:46,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 154 transitions. [2021-03-26 13:22:46,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:22:46,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 154 transitions. [2021-03-26 13:22:46,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 14.0) internal successors, (154), 11 states have internal predecessors, (154), 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) [2021-03-26 13:22:46,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 51.0) internal successors, (612), 12 states have internal predecessors, (612), 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) [2021-03-26 13:22:46,330 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 51.0) internal successors, (612), 12 states have internal predecessors, (612), 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) [2021-03-26 13:22:46,330 INFO L185 Difference]: Start difference. First operand has 95 places, 100 transitions, 956 flow. Second operand 11 states and 154 transitions. [2021-03-26 13:22:46,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 112 transitions, 1272 flow [2021-03-26 13:22:46,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 112 transitions, 1208 flow, removed 1 selfloop flow, removed 9 redundant places. [2021-03-26 13:22:46,344 INFO L241 Difference]: Finished difference. Result has 99 places, 91 transitions, 848 flow [2021-03-26 13:22:46,344 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=896, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=848, PETRI_PLACES=99, PETRI_TRANSITIONS=91} [2021-03-26 13:22:46,344 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 74 predicate places. [2021-03-26 13:22:46,344 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:22:46,345 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 91 transitions, 848 flow [2021-03-26 13:22:46,345 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 91 transitions, 848 flow [2021-03-26 13:22:46,345 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 90 places, 91 transitions, 848 flow [2021-03-26 13:22:46,364 INFO L129 PetriNetUnfolder]: 38/239 cut-off events. [2021-03-26 13:22:46,364 INFO L130 PetriNetUnfolder]: For 1289/1304 co-relation queries the response was YES. [2021-03-26 13:22:46,365 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1146 conditions, 239 events. 38/239 cut-off events. For 1289/1304 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1576 event pairs, 3 based on Foata normal form. 8/243 useless extension candidates. Maximal degree in co-relation 1106. Up to 69 conditions per place. [2021-03-26 13:22:46,367 INFO L142 LiptonReduction]: Number of co-enabled transitions 162 [2021-03-26 13:22:46,370 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:22:46,371 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:22:46,371 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 27 [2021-03-26 13:22:46,371 INFO L480 AbstractCegarLoop]: Abstraction has has 90 places, 91 transitions, 848 flow [2021-03-26 13:22:46,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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) [2021-03-26 13:22:46,371 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:22:46,372 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:22:46,372 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-26 13:22:46,372 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:22:46,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:22:46,372 INFO L82 PathProgramCache]: Analyzing trace with hash 724984290, now seen corresponding path program 1 times [2021-03-26 13:22:46,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:22:46,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264392981] [2021-03-26 13:22:46,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:22:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:22:46,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:46,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:46,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:46,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:46,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:46,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:46,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:46,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:46,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:46,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:46,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:46,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:46,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:46,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:46,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:22:46,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264392981] [2021-03-26 13:22:46,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:22:46,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-26 13:22:46,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180702150] [2021-03-26 13:22:46,413 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:22:46,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:22:46,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:22:46,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:22:46,414 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 51 [2021-03-26 13:22:46,414 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 91 transitions, 848 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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) [2021-03-26 13:22:46,414 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:22:46,414 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 51 [2021-03-26 13:22:46,414 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:22:46,569 INFO L129 PetriNetUnfolder]: 92/364 cut-off events. [2021-03-26 13:22:46,569 INFO L130 PetriNetUnfolder]: For 2348/2348 co-relation queries the response was YES. [2021-03-26 13:22:46,571 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2041 conditions, 364 events. 92/364 cut-off events. For 2348/2348 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2346 event pairs, 27 based on Foata normal form. 3/367 useless extension candidates. Maximal degree in co-relation 1972. Up to 238 conditions per place. [2021-03-26 13:22:46,572 INFO L132 encePairwiseOnDemand]: 32/51 looper letters, 73 selfloop transitions, 13 changer transitions 32/120 dead transitions. [2021-03-26 13:22:46,572 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 120 transitions, 1356 flow [2021-03-26 13:22:46,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-26 13:22:46,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-26 13:22:46,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 162 transitions. [2021-03-26 13:22:46,573 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2887700534759358 [2021-03-26 13:22:46,573 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 162 transitions. [2021-03-26 13:22:46,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 162 transitions. [2021-03-26 13:22:46,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:22:46,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 162 transitions. [2021-03-26 13:22:46,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 14.727272727272727) internal successors, (162), 11 states have internal predecessors, (162), 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) [2021-03-26 13:22:46,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 51.0) internal successors, (612), 12 states have internal predecessors, (612), 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) [2021-03-26 13:22:46,575 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 51.0) internal successors, (612), 12 states have internal predecessors, (612), 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) [2021-03-26 13:22:46,575 INFO L185 Difference]: Start difference. First operand has 90 places, 91 transitions, 848 flow. Second operand 11 states and 162 transitions. [2021-03-26 13:22:46,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 120 transitions, 1356 flow [2021-03-26 13:22:46,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 120 transitions, 1242 flow, removed 15 selfloop flow, removed 16 redundant places. [2021-03-26 13:22:46,589 INFO L241 Difference]: Finished difference. Result has 88 places, 80 transitions, 703 flow [2021-03-26 13:22:46,589 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=703, PETRI_PLACES=88, PETRI_TRANSITIONS=80} [2021-03-26 13:22:46,589 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 63 predicate places. [2021-03-26 13:22:46,589 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:22:46,590 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 80 transitions, 703 flow [2021-03-26 13:22:46,590 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 80 transitions, 703 flow [2021-03-26 13:22:46,590 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 79 places, 80 transitions, 703 flow [2021-03-26 13:22:46,607 INFO L129 PetriNetUnfolder]: 35/229 cut-off events. [2021-03-26 13:22:46,607 INFO L130 PetriNetUnfolder]: For 1208/1221 co-relation queries the response was YES. [2021-03-26 13:22:46,608 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1073 conditions, 229 events. 35/229 cut-off events. For 1208/1221 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1522 event pairs, 3 based on Foata normal form. 7/231 useless extension candidates. Maximal degree in co-relation 1037. Up to 68 conditions per place. [2021-03-26 13:22:46,609 INFO L142 LiptonReduction]: Number of co-enabled transitions 156 [2021-03-26 13:22:46,648 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:22:46,648 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 13:22:46,648 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 59 [2021-03-26 13:22:46,648 INFO L480 AbstractCegarLoop]: Abstraction has has 76 places, 78 transitions, 685 flow [2021-03-26 13:22:46,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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) [2021-03-26 13:22:46,649 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:22:46,649 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:22:46,649 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-26 13:22:46,649 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:22:46,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:22:46,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1230463126, now seen corresponding path program 1 times [2021-03-26 13:22:46,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:22:46,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917604540] [2021-03-26 13:22:46,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:22:46,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:22:46,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:46,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:46,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:46,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:46,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:46,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:46,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:46,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:46,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:46,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:46,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:46,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:46,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:46,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:46,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:22:46,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917604540] [2021-03-26 13:22:46,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:22:46,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-26 13:22:46,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245215212] [2021-03-26 13:22:46,704 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-26 13:22:46,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:22:46,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-26 13:22:46,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-03-26 13:22:46,705 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 53 [2021-03-26 13:22:46,705 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 78 transitions, 685 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 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) [2021-03-26 13:22:46,706 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:22:46,706 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 53 [2021-03-26 13:22:46,706 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:22:46,860 INFO L129 PetriNetUnfolder]: 90/370 cut-off events. [2021-03-26 13:22:46,860 INFO L130 PetriNetUnfolder]: For 2489/2494 co-relation queries the response was YES. [2021-03-26 13:22:46,861 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2035 conditions, 370 events. 90/370 cut-off events. For 2489/2494 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2533 event pairs, 6 based on Foata normal form. 10/380 useless extension candidates. Maximal degree in co-relation 1995. Up to 159 conditions per place. [2021-03-26 13:22:46,863 INFO L132 encePairwiseOnDemand]: 38/53 looper letters, 80 selfloop transitions, 40 changer transitions 34/157 dead transitions. [2021-03-26 13:22:46,863 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 157 transitions, 1711 flow [2021-03-26 13:22:46,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-26 13:22:46,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-26 13:22:46,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 200 transitions. [2021-03-26 13:22:46,864 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.29027576197387517 [2021-03-26 13:22:46,864 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 200 transitions. [2021-03-26 13:22:46,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 200 transitions. [2021-03-26 13:22:46,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:22:46,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 200 transitions. [2021-03-26 13:22:46,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 15.384615384615385) internal successors, (200), 13 states have internal predecessors, (200), 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) [2021-03-26 13:22:46,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 53.0) internal successors, (742), 14 states have internal predecessors, (742), 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) [2021-03-26 13:22:46,866 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 53.0) internal successors, (742), 14 states have internal predecessors, (742), 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) [2021-03-26 13:22:46,866 INFO L185 Difference]: Start difference. First operand has 76 places, 78 transitions, 685 flow. Second operand 13 states and 200 transitions. [2021-03-26 13:22:46,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 157 transitions, 1711 flow [2021-03-26 13:22:46,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 157 transitions, 1504 flow, removed 89 selfloop flow, removed 11 redundant places. [2021-03-26 13:22:46,879 INFO L241 Difference]: Finished difference. Result has 82 places, 91 transitions, 882 flow [2021-03-26 13:22:46,879 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=882, PETRI_PLACES=82, PETRI_TRANSITIONS=91} [2021-03-26 13:22:46,879 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 57 predicate places. [2021-03-26 13:22:46,879 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:22:46,879 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 91 transitions, 882 flow [2021-03-26 13:22:46,880 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 91 transitions, 882 flow [2021-03-26 13:22:46,880 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 77 places, 91 transitions, 882 flow [2021-03-26 13:22:46,897 INFO L129 PetriNetUnfolder]: 37/244 cut-off events. [2021-03-26 13:22:46,897 INFO L130 PetriNetUnfolder]: For 1588/1604 co-relation queries the response was YES. [2021-03-26 13:22:46,898 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1191 conditions, 244 events. 37/244 cut-off events. For 1588/1604 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1689 event pairs, 3 based on Foata normal form. 4/242 useless extension candidates. Maximal degree in co-relation 1156. Up to 75 conditions per place. [2021-03-26 13:22:46,899 INFO L142 LiptonReduction]: Number of co-enabled transitions 148 [2021-03-26 13:22:46,944 INFO L154 LiptonReduction]: Checked pairs total: 8 [2021-03-26 13:22:46,944 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-26 13:22:46,945 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 66 [2021-03-26 13:22:46,945 INFO L480 AbstractCegarLoop]: Abstraction has has 77 places, 91 transitions, 900 flow [2021-03-26 13:22:46,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 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) [2021-03-26 13:22:46,945 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:22:46,945 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:22:46,945 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-26 13:22:46,946 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:22:46,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:22:46,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1791837121, now seen corresponding path program 1 times [2021-03-26 13:22:46,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:22:46,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132155561] [2021-03-26 13:22:46,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:22:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:22:46,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:46,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:46,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:46,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:46,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:46,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:46,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:46,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:46,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:46,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:46,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:46,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:46,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:46,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:46,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:46,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:46,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:46,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:46,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:22:46,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132155561] [2021-03-26 13:22:46,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:22:46,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-26 13:22:46,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437751730] [2021-03-26 13:22:46,997 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-26 13:22:46,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:22:46,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-26 13:22:46,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-03-26 13:22:46,998 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 56 [2021-03-26 13:22:46,998 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 91 transitions, 900 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 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) [2021-03-26 13:22:46,998 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:22:46,998 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 56 [2021-03-26 13:22:46,998 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:22:47,186 INFO L129 PetriNetUnfolder]: 87/353 cut-off events. [2021-03-26 13:22:47,186 INFO L130 PetriNetUnfolder]: For 2710/2710 co-relation queries the response was YES. [2021-03-26 13:22:47,187 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2062 conditions, 353 events. 87/353 cut-off events. For 2710/2710 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2322 event pairs, 16 based on Foata normal form. 1/354 useless extension candidates. Maximal degree in co-relation 1957. Up to 176 conditions per place. [2021-03-26 13:22:47,189 INFO L132 encePairwiseOnDemand]: 39/56 looper letters, 73 selfloop transitions, 41 changer transitions 19/135 dead transitions. [2021-03-26 13:22:47,189 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 135 transitions, 1701 flow [2021-03-26 13:22:47,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-26 13:22:47,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-03-26 13:22:47,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 198 transitions. [2021-03-26 13:22:47,190 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.25255102040816324 [2021-03-26 13:22:47,191 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 198 transitions. [2021-03-26 13:22:47,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 198 transitions. [2021-03-26 13:22:47,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:22:47,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 198 transitions. [2021-03-26 13:22:47,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 14.142857142857142) internal successors, (198), 14 states have internal predecessors, (198), 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) [2021-03-26 13:22:47,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 56.0) internal successors, (840), 15 states have internal predecessors, (840), 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) [2021-03-26 13:22:47,193 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 56.0) internal successors, (840), 15 states have internal predecessors, (840), 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) [2021-03-26 13:22:47,193 INFO L185 Difference]: Start difference. First operand has 77 places, 91 transitions, 900 flow. Second operand 14 states and 198 transitions. [2021-03-26 13:22:47,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 135 transitions, 1701 flow [2021-03-26 13:22:47,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 135 transitions, 1400 flow, removed 127 selfloop flow, removed 8 redundant places. [2021-03-26 13:22:47,209 INFO L241 Difference]: Finished difference. Result has 88 places, 98 transitions, 946 flow [2021-03-26 13:22:47,209 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=743, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=946, PETRI_PLACES=88, PETRI_TRANSITIONS=98} [2021-03-26 13:22:47,209 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 63 predicate places. [2021-03-26 13:22:47,209 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:22:47,210 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 98 transitions, 946 flow [2021-03-26 13:22:47,210 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 98 transitions, 946 flow [2021-03-26 13:22:47,211 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 98 transitions, 946 flow [2021-03-26 13:22:47,228 INFO L129 PetriNetUnfolder]: 36/252 cut-off events. [2021-03-26 13:22:47,228 INFO L130 PetriNetUnfolder]: For 1238/1248 co-relation queries the response was YES. [2021-03-26 13:22:47,229 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1138 conditions, 252 events. 36/252 cut-off events. For 1238/1248 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1798 event pairs, 4 based on Foata normal form. 2/249 useless extension candidates. Maximal degree in co-relation 1101. Up to 52 conditions per place. [2021-03-26 13:22:47,231 INFO L142 LiptonReduction]: Number of co-enabled transitions 142 [2021-03-26 13:22:47,290 INFO L154 LiptonReduction]: Checked pairs total: 10 [2021-03-26 13:22:47,291 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-26 13:22:47,291 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 82 [2021-03-26 13:22:47,291 INFO L480 AbstractCegarLoop]: Abstraction has has 86 places, 98 transitions, 949 flow [2021-03-26 13:22:47,292 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 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) [2021-03-26 13:22:47,292 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:22:47,292 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:22:47,292 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-26 13:22:47,292 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:22:47,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:22:47,292 INFO L82 PathProgramCache]: Analyzing trace with hash -795697418, now seen corresponding path program 1 times [2021-03-26 13:22:47,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:22:47,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626608863] [2021-03-26 13:22:47,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:22:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:22:47,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:47,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:47,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:47,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:47,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:47,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:47,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:47,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:47,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:47,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:47,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:22:47,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:22:47,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:22:47,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626608863] [2021-03-26 13:22:47,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:22:47,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-26 13:22:47,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522434619] [2021-03-26 13:22:47,324 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-26 13:22:47,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:22:47,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-26 13:22:47,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-03-26 13:22:47,325 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 60 [2021-03-26 13:22:47,325 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 98 transitions, 949 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 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) [2021-03-26 13:22:47,325 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:22:47,325 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 60 [2021-03-26 13:22:47,325 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:22:47,546 INFO L129 PetriNetUnfolder]: 86/450 cut-off events. [2021-03-26 13:22:47,546 INFO L130 PetriNetUnfolder]: For 2915/2915 co-relation queries the response was YES. [2021-03-26 13:22:47,547 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2411 conditions, 450 events. 86/450 cut-off events. For 2915/2915 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3496 event pairs, 14 based on Foata normal form. 5/455 useless extension candidates. Maximal degree in co-relation 2336. Up to 126 conditions per place. [2021-03-26 13:22:47,550 INFO L132 encePairwiseOnDemand]: 37/60 looper letters, 65 selfloop transitions, 91 changer transitions 16/174 dead transitions. [2021-03-26 13:22:47,550 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 174 transitions, 2005 flow [2021-03-26 13:22:47,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-26 13:22:47,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-03-26 13:22:47,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 209 transitions. [2021-03-26 13:22:47,551 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2488095238095238 [2021-03-26 13:22:47,551 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 209 transitions. [2021-03-26 13:22:47,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 209 transitions. [2021-03-26 13:22:47,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:22:47,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 209 transitions. [2021-03-26 13:22:47,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 14.928571428571429) internal successors, (209), 14 states have internal predecessors, (209), 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) [2021-03-26 13:22:47,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 60.0) internal successors, (900), 15 states have internal predecessors, (900), 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) [2021-03-26 13:22:47,553 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 60.0) internal successors, (900), 15 states have internal predecessors, (900), 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) [2021-03-26 13:22:47,553 INFO L185 Difference]: Start difference. First operand has 86 places, 98 transitions, 949 flow. Second operand 14 states and 209 transitions. [2021-03-26 13:22:47,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 174 transitions, 2005 flow [2021-03-26 13:22:47,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 174 transitions, 1940 flow, removed 24 selfloop flow, removed 5 redundant places. [2021-03-26 13:22:47,571 INFO L241 Difference]: Finished difference. Result has 101 places, 132 transitions, 1610 flow [2021-03-26 13:22:47,571 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=909, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1610, PETRI_PLACES=101, PETRI_TRANSITIONS=132} [2021-03-26 13:22:47,571 INFO L343 CegarLoopForPetriNet]: 25 programPoint places, 76 predicate places. [2021-03-26 13:22:47,571 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:22:47,572 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 132 transitions, 1610 flow [2021-03-26 13:22:47,574 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 132 transitions, 1610 flow [2021-03-26 13:22:47,575 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 101 places, 132 transitions, 1610 flow [2021-03-26 13:22:47,624 INFO L129 PetriNetUnfolder]: 36/335 cut-off events. [2021-03-26 13:22:47,624 INFO L130 PetriNetUnfolder]: For 2324/2340 co-relation queries the response was YES. [2021-03-26 13:22:47,625 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1804 conditions, 335 events. 36/335 cut-off events. For 2324/2340 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2751 event pairs, 3 based on Foata normal form. 5/334 useless extension candidates. Maximal degree in co-relation 1763. Up to 80 conditions per place. [2021-03-26 13:22:47,628 INFO L142 LiptonReduction]: Number of co-enabled transitions 160 [2021-03-26 13:22:47,682 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-26 13:22:47,682 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 13:22:47,683 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 112 [2021-03-26 13:22:47,684 INFO L480 AbstractCegarLoop]: Abstraction has has 101 places, 132 transitions, 1618 flow [2021-03-26 13:22:47,684 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 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) [2021-03-26 13:22:47,684 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:22:47,684 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:22:47,684 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-26 13:22:47,685 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:22:47,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:22:47,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1652193364, now seen corresponding path program 2 times [2021-03-26 13:22:47,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:22:47,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953591172] [2021-03-26 13:22:47,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:22:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 13:22:47,689 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 13:22:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 13:22:47,692 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 13:22:47,707 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 13:22:47,707 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 13:22:47,708 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-26 13:22:47,728 INFO L202 PluginConnector]: Adding new model NonAtomicIncrement_2Threads.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.03 01:22:47 BasicIcfg [2021-03-26 13:22:47,728 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-26 13:22:47,729 INFO L168 Benchmark]: Toolchain (without parser) took 7805.21 ms. Allocated memory was 255.9 MB in the beginning and 503.3 MB in the end (delta: 247.5 MB). Free memory was 236.3 MB in the beginning and 457.5 MB in the end (delta: -221.2 MB). Peak memory consumption was 27.9 MB. Max. memory is 16.0 GB. [2021-03-26 13:22:47,729 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.51 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. [2021-03-26 13:22:47,730 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.75 ms. Allocated memory is still 255.9 MB. Free memory was 236.3 MB in the beginning and 234.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 13:22:47,730 INFO L168 Benchmark]: Boogie Preprocessor took 13.56 ms. Allocated memory is still 255.9 MB. Free memory was 234.7 MB in the beginning and 234.0 MB in the end (delta: 781.5 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 13:22:47,730 INFO L168 Benchmark]: RCFGBuilder took 236.76 ms. Allocated memory is still 255.9 MB. Free memory was 234.0 MB in the beginning and 240.2 MB in the end (delta: -6.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.0 GB. [2021-03-26 13:22:47,730 INFO L168 Benchmark]: TraceAbstraction took 7523.79 ms. Allocated memory was 255.9 MB in the beginning and 503.3 MB in the end (delta: 247.5 MB). Free memory was 239.8 MB in the beginning and 457.5 MB in the end (delta: -217.8 MB). Peak memory consumption was 30.7 MB. Max. memory is 16.0 GB. [2021-03-26 13:22:47,731 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 0.51 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 25.75 ms. Allocated memory is still 255.9 MB. Free memory was 236.3 MB in the beginning and 234.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.56 ms. Allocated memory is still 255.9 MB. Free memory was 234.7 MB in the beginning and 234.0 MB in the end (delta: 781.5 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 236.76 ms. Allocated memory is still 255.9 MB. Free memory was 234.0 MB in the beginning and 240.2 MB in the end (delta: -6.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 7523.79 ms. Allocated memory was 255.9 MB in the beginning and 503.3 MB in the end (delta: 247.5 MB). Free memory was 239.8 MB in the beginning and 457.5 MB in the end (delta: -217.8 MB). Peak memory consumption was 30.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 184.5ms, 27 PlacesBefore, 25 PlacesAfterwards, 22 TransitionsBefore, 20 TransitionsAfterwards, 140 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 354 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 70, positive: 28, positive conditional: 28, positive unconditional: 0, negative: 42, negative conditional: 42, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 70, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 70, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 44, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 44, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 22, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 102, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 102, negative conditional: 0, negative unconditional: 102, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 70, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 20, negative conditional: 0, negative unconditional: 20, unknown: 44, unknown conditional: 0, unknown unconditional: 44] , Statistics on independence cache: Total cache size (in pairs): 44, Positive cache size: 22, Positive conditional cache size: 0, Positive unconditional cache size: 22, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 195.3ms, 50 PlacesBefore, 44 PlacesAfterwards, 48 TransitionsBefore, 48 TransitionsAfterwards, 138 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 8 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 8 TotalNumberOfCompositions, 843 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 89, positive: 29, positive conditional: 29, positive unconditional: 0, negative: 60, negative conditional: 60, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 89, positive: 29, positive conditional: 23, positive unconditional: 6, negative: 60, negative conditional: 60, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 89, positive: 29, positive conditional: 23, positive unconditional: 6, negative: 60, negative conditional: 60, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 14, positive: 9, positive conditional: 8, positive unconditional: 1, negative: 5, negative conditional: 5, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 14, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 5, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 5, negative conditional: 5, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 26, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 26, negative conditional: 26, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 89, positive: 20, positive conditional: 15, positive unconditional: 5, negative: 55, negative conditional: 55, negative unconditional: 0, unknown: 14, unknown conditional: 13, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 58, Positive cache size: 31, Positive conditional cache size: 8, Positive unconditional cache size: 23, Negative cache size: 27, Negative conditional cache size: 5, Negative unconditional cache size: 22, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 146.2ms, 72 PlacesBefore, 71 PlacesAfterwards, 104 TransitionsBefore, 102 TransitionsAfterwards, 214 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 2 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 2, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ 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] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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: 1, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1, unknown conditional: 1, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 59, Positive cache size: 32, Positive conditional cache size: 9, Positive unconditional cache size: 23, Negative cache size: 27, Negative conditional cache size: 5, Negative unconditional cache size: 22, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 37.7ms, 72 PlacesBefore, 72 PlacesAfterwards, 100 TransitionsBefore, 100 TransitionsAfterwards, 184 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: 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: SemanticConditionEliminator.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] , SemanticConditionEliminator.Statistics on underlying relation: 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: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ 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] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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): 59, Positive cache size: 32, Positive conditional cache size: 9, Positive unconditional cache size: 23, Negative cache size: 27, Negative conditional cache size: 5, Negative unconditional cache size: 22, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 104.9ms, 89 PlacesBefore, 88 PlacesAfterwards, 114 TransitionsBefore, 113 TransitionsAfterwards, 188 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 2 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 2, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ 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] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 2, unknown conditional: 2, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 61, Positive cache size: 34, Positive conditional cache size: 11, Positive unconditional cache size: 23, Negative cache size: 27, Negative conditional cache size: 5, Negative unconditional cache size: 22, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 35.5ms, 104 PlacesBefore, 101 PlacesAfterwards, 111 TransitionsBefore, 111 TransitionsAfterwards, 184 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: 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: SemanticConditionEliminator.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] , SemanticConditionEliminator.Statistics on underlying relation: 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: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ 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] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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): 61, Positive cache size: 34, Positive conditional cache size: 11, Positive unconditional cache size: 23, Negative cache size: 27, Negative conditional cache size: 5, Negative unconditional cache size: 22, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 49.5ms, 97 PlacesBefore, 92 PlacesAfterwards, 111 TransitionsBefore, 110 TransitionsAfterwards, 180 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: 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: SemanticConditionEliminator.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] , SemanticConditionEliminator.Statistics on underlying relation: 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: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ 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] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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): 61, Positive cache size: 34, Positive conditional cache size: 11, Positive unconditional cache size: 23, Negative cache size: 27, Negative conditional cache size: 5, Negative unconditional cache size: 22, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 32.7ms, 96 PlacesBefore, 89 PlacesAfterwards, 107 TransitionsBefore, 107 TransitionsAfterwards, 180 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: 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: SemanticConditionEliminator.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] , SemanticConditionEliminator.Statistics on underlying relation: 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: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ 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] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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): 61, Positive cache size: 34, Positive conditional cache size: 11, Positive unconditional cache size: 23, Negative cache size: 27, Negative conditional cache size: 5, Negative unconditional cache size: 22, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 34.3ms, 93 PlacesBefore, 85 PlacesAfterwards, 103 TransitionsBefore, 103 TransitionsAfterwards, 180 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: 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: SemanticConditionEliminator.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] , SemanticConditionEliminator.Statistics on underlying relation: 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: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ 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] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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): 61, Positive cache size: 34, Positive conditional cache size: 11, Positive unconditional cache size: 23, Negative cache size: 27, Negative conditional cache size: 5, Negative unconditional cache size: 22, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 55.7ms, 91 PlacesBefore, 79 PlacesAfterwards, 98 TransitionsBefore, 98 TransitionsAfterwards, 180 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 3, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 3, positive: 3, positive conditional: 3, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 3, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 3, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 3, unknown conditional: 3, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 64, Positive cache size: 37, Positive conditional cache size: 14, Positive unconditional cache size: 23, Negative cache size: 27, Negative conditional cache size: 5, Negative unconditional cache size: 22, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 113.1ms, 86 PlacesBefore, 86 PlacesAfterwards, 118 TransitionsBefore, 118 TransitionsAfterwards, 186 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 3 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 3, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 3, positive: 3, positive conditional: 3, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 3, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ 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] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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: 3, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1, unknown conditional: 1, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 65, Positive cache size: 38, Positive conditional cache size: 15, Positive unconditional cache size: 23, Negative cache size: 27, Negative conditional cache size: 5, Negative unconditional cache size: 22, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 74.9ms, 107 PlacesBefore, 105 PlacesAfterwards, 126 TransitionsBefore, 125 TransitionsAfterwards, 192 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 1 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 1, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.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] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.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] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ 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] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 39, Positive conditional cache size: 15, Positive unconditional cache size: 24, Negative cache size: 27, Negative conditional cache size: 5, Negative unconditional cache size: 22, Eliminated conditions: 1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 54.5ms, 113 PlacesBefore, 106 PlacesAfterwards, 115 TransitionsBefore, 114 TransitionsAfterwards, 188 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 2 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 2, positive: 2, positive conditional: 1, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 1, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ 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] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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: 2, positive conditional: 1, positive unconditional: 1, 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): 66, Positive cache size: 39, Positive conditional cache size: 15, Positive unconditional cache size: 24, Negative cache size: 27, Negative conditional cache size: 5, Negative unconditional cache size: 22, Eliminated conditions: 1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 31.1ms, 110 PlacesBefore, 99 PlacesAfterwards, 100 TransitionsBefore, 100 TransitionsAfterwards, 170 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: 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: SemanticConditionEliminator.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] , SemanticConditionEliminator.Statistics on underlying relation: 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: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ 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] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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): 66, Positive cache size: 39, Positive conditional cache size: 15, Positive unconditional cache size: 24, Negative cache size: 27, Negative conditional cache size: 5, Negative unconditional cache size: 22, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 28.7ms, 97 PlacesBefore, 95 PlacesAfterwards, 100 TransitionsBefore, 100 TransitionsAfterwards, 164 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: 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: SemanticConditionEliminator.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] , SemanticConditionEliminator.Statistics on underlying relation: 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: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ 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] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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): 66, Positive cache size: 39, Positive conditional cache size: 15, Positive unconditional cache size: 24, Negative cache size: 27, Negative conditional cache size: 5, Negative unconditional cache size: 22, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 25.8ms, 99 PlacesBefore, 90 PlacesAfterwards, 91 TransitionsBefore, 91 TransitionsAfterwards, 162 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: 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: SemanticConditionEliminator.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] , SemanticConditionEliminator.Statistics on underlying relation: 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: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ 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] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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): 66, Positive cache size: 39, Positive conditional cache size: 15, Positive unconditional cache size: 24, Negative cache size: 27, Negative conditional cache size: 5, Negative unconditional cache size: 22, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 58.1ms, 88 PlacesBefore, 76 PlacesAfterwards, 80 TransitionsBefore, 78 TransitionsAfterwards, 156 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: 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: SemanticConditionEliminator.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] , SemanticConditionEliminator.Statistics on underlying relation: 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: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ 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] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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): 66, Positive cache size: 39, Positive conditional cache size: 15, Positive unconditional cache size: 24, Negative cache size: 27, Negative conditional cache size: 5, Negative unconditional cache size: 22, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 64.8ms, 82 PlacesBefore, 77 PlacesAfterwards, 91 TransitionsBefore, 91 TransitionsAfterwards, 148 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 8 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 8, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 8, positive: 8, positive conditional: 8, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 8, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 5, positive: 5, positive conditional: 5, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 5, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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: 8, positive: 3, positive conditional: 3, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 5, unknown conditional: 5, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 71, Positive cache size: 44, Positive conditional cache size: 20, Positive unconditional cache size: 24, Negative cache size: 27, Negative conditional cache size: 5, Negative unconditional cache size: 22, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 80.9ms, 88 PlacesBefore, 86 PlacesAfterwards, 98 TransitionsBefore, 98 TransitionsAfterwards, 142 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 10 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 10, positive: 10, positive conditional: 10, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 10, positive: 10, positive conditional: 10, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 10, positive: 10, positive conditional: 10, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 5, positive: 5, positive conditional: 5, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 5, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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: 10, positive: 5, positive conditional: 5, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 5, unknown conditional: 5, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 76, Positive cache size: 49, Positive conditional cache size: 25, Positive unconditional cache size: 24, Negative cache size: 27, Negative conditional cache size: 5, Negative unconditional cache size: 22, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 108.5ms, 101 PlacesBefore, 101 PlacesAfterwards, 132 TransitionsBefore, 132 TransitionsAfterwards, 160 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 2 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 2, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 2, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ 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] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 2, unknown conditional: 2, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 78, Positive cache size: 51, Positive conditional cache size: 27, Positive unconditional cache size: 24, Negative cache size: 27, Negative conditional cache size: 5, Negative unconditional cache size: 22, Eliminated conditions: 0 - CounterExampleResult [Line: 28]: assertion can be violated assertion can be violated We found a FailurePath: [L22] 0 x := 0; VAL [x=0] [L24] FORK 0 fork 1 IncrementProcess1(); VAL [x=0] [L25] FORK 0 fork 2 IncrementProcess2(); VAL [x=0] [L54] 2 localx := x; VAL [localx=0, x=0] [L38] 1 localx := x; [L39] 1 x := localx + 1; VAL [localx=0, localx=0, x=1] [L41] 1 localx := x; [L42] 1 x := localx + 1; VAL [localx=1, localx=0, x=2] [L55] 2 x := localx + 1; VAL [localx=1, localx=0, x=1] [L44] 1 localx := x; VAL [localx=1, localx=0, x=1] [L57] 2 localx := x; [L58] 2 x := localx + 1; VAL [localx=1, localx=1, x=2] [L60] 2 localx := x; [L61] 2 x := localx + 1; [L45] 1 x := localx + 1; [L26] JOIN 1 join 1; VAL [localx=1, localx=2, x=2] [L27] JOIN 2 join 2; VAL [localx=1, localx=2, x=2] [L28] 0 assert x >= 3; VAL [localx=1, localx=2, x=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 25 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: UNSAFE, OverallTime: 7408.1ms, OverallIterations: 20, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 4276.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 243.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 293 SDtfs, 451 SDslu, 316 SDs, 0 SdLazy, 2423 SolverSat, 873 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1310.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 256 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 254 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 1461.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1618occurred in iteration=19, InterpolantAutomatonStates: 225, 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: 25.8ms SsaConstructionTime, 114.9ms SatisfiabilityAnalysisTime, 1149.4ms InterpolantComputationTime, 288 NumberOfCodeBlocks, 288 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 255 ConstructedInterpolants, 0 QuantifiedInterpolants, 765 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...