/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-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy11.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 22:07:07,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 22:07:07,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 22:07:07,342 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 22:07:07,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 22:07:07,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 22:07:07,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 22:07:07,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 22:07:07,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 22:07:07,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 22:07:07,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 22:07:07,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 22:07:07,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 22:07:07,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 22:07:07,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 22:07:07,368 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 22:07:07,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 22:07:07,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 22:07:07,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 22:07:07,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 22:07:07,380 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 22:07:07,381 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 22:07:07,382 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 22:07:07,383 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 22:07:07,389 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 22:07:07,390 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 22:07:07,390 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 22:07:07,392 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 22:07:07,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 22:07:07,393 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 22:07:07,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 22:07:07,394 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 22:07:07,395 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 22:07:07,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 22:07:07,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 22:07:07,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 22:07:07,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 22:07:07,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 22:07:07,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 22:07:07,398 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 22:07:07,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 22:07:07,399 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-RepeatedSemanticLbe.epf [2021-03-25 22:07:07,434 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 22:07:07,434 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 22:07:07,441 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 22:07:07,441 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 22:07:07,441 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 22:07:07,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 22:07:07,442 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 22:07:07,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 22:07:07,442 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 22:07:07,442 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 22:07:07,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 22:07:07,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 22:07:07,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 22:07:07,443 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 22:07:07,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 22:07:07,444 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 22:07:07,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 22:07:07,444 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 22:07:07,444 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 22:07:07,444 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 22:07:07,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 22:07:07,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 22:07:07,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 22:07:07,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 22:07:07,445 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 22:07:07,445 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 22:07:07,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 22:07:07,446 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 22:07:07,446 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 22:07:07,446 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 22:07:07,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 22:07:07,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 22:07:07,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 22:07:07,796 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 22:07:07,796 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 22:07:07,797 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy11.wvr.bpl [2021-03-25 22:07:07,797 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy11.wvr.bpl' [2021-03-25 22:07:07,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 22:07:07,826 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 22:07:07,827 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 22:07:07,827 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 22:07:07,827 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 22:07:07,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 10:07:07" (1/1) ... [2021-03-25 22:07:07,840 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 10:07:07" (1/1) ... [2021-03-25 22:07:07,845 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 22:07:07,845 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 22:07:07,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 22:07:07,846 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 22:07:07,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 10:07:07" (1/1) ... [2021-03-25 22:07:07,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 10:07:07" (1/1) ... [2021-03-25 22:07:07,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 10:07:07" (1/1) ... [2021-03-25 22:07:07,853 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 10:07:07" (1/1) ... [2021-03-25 22:07:07,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 10:07:07" (1/1) ... [2021-03-25 22:07:07,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 10:07:07" (1/1) ... [2021-03-25 22:07:07,857 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 10:07:07" (1/1) ... [2021-03-25 22:07:07,858 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 22:07:07,859 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 22:07:07,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 22:07:07,859 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 22:07:07,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 10:07:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 22:07:07,930 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-25 22:07:07,931 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-25 22:07:07,932 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-25 22:07:07,932 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-25 22:07:07,933 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-25 22:07:07,933 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-25 22:07:07,933 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 22:07:07,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 22:07:07,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 22:07:07,934 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 22:07:08,074 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 22:07:08,074 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-25 22:07:08,076 INFO L202 PluginConnector]: Adding new model easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 10:07:08 BoogieIcfgContainer [2021-03-25 22:07:08,076 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 22:07:08,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 22:07:08,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 22:07:08,079 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 22:07:08,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 10:07:07" (1/2) ... [2021-03-25 22:07:08,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51709251 and model type easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 10:07:08, skipping insertion in model container [2021-03-25 22:07:08,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 10:07:08" (2/2) ... [2021-03-25 22:07:08,081 INFO L111 eAbstractionObserver]: Analyzing ICFG easy11.wvr.bpl [2021-03-25 22:07:08,085 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 22:07:08,088 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 22:07:08,089 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 22:07:08,104 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:07:08,104 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:07:08,104 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:07:08,104 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:07:08,104 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:07:08,105 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:07:08,105 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:07:08,105 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:07:08,105 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:07:08,105 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:07:08,105 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:07:08,106 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:07:08,106 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:07:08,106 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:07:08,106 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:07:08,107 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:07:08,107 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:07:08,107 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:07:08,107 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:07:08,107 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:07:08,107 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:07:08,108 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:07:08,108 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:07:08,108 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:07:08,109 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:07:08,112 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 22:07:08,116 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-03-25 22:07:08,128 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-25 22:07:08,143 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 22:07:08,143 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 22:07:08,143 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 22:07:08,143 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 22:07:08,144 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 22:07:08,144 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 22:07:08,144 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 22:07:08,144 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 22:07:08,151 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 28 places, 23 transitions, 62 flow [2021-03-25 22:07:08,165 INFO L129 PetriNetUnfolder]: 2/21 cut-off events. [2021-03-25 22:07:08,165 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 22:07:08,167 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 21 events. 2/21 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 19 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2021-03-25 22:07:08,167 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 23 transitions, 62 flow [2021-03-25 22:07:08,170 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 19 transitions, 50 flow [2021-03-25 22:07:08,171 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 22:07:08,182 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 24 places, 19 transitions, 50 flow [2021-03-25 22:07:08,185 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 24 places, 19 transitions, 50 flow [2021-03-25 22:07:08,186 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 19 transitions, 50 flow [2021-03-25 22:07:08,192 INFO L129 PetriNetUnfolder]: 2/19 cut-off events. [2021-03-25 22:07:08,192 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 22:07:08,193 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 19 events. 2/19 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 15. Up to 2 conditions per place. [2021-03-25 22:07:08,194 INFO L142 LiptonReduction]: Number of co-enabled transitions 96 [2021-03-25 22:07:08,351 INFO L154 LiptonReduction]: Checked pairs total: 38 [2021-03-25 22:07:08,351 INFO L156 LiptonReduction]: Total number of compositions: 7 [2021-03-25 22:07:08,352 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 182 [2021-03-25 22:07:08,361 INFO L129 PetriNetUnfolder]: 2/11 cut-off events. [2021-03-25 22:07:08,362 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 22:07:08,362 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:07:08,362 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:07:08,363 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 22:07:08,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:07:08,366 INFO L82 PathProgramCache]: Analyzing trace with hash -2146208904, now seen corresponding path program 1 times [2021-03-25 22:07:08,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:07:08,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24045492] [2021-03-25 22:07:08,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:07:08,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:07:08,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:08,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:07:08,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:08,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:08,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:08,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:08,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:08,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:08,552 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 22:07:08,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:08,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:08,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24045492] [2021-03-25 22:07:08,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:07:08,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 22:07:08,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301429189] [2021-03-25 22:07:08,572 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 22:07:08,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:07:08,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 22:07:08,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-25 22:07:08,584 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2021-03-25 22:07:08,585 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 12 transitions, 36 flow. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:08,586 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:07:08,586 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2021-03-25 22:07:08,587 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:07:08,692 INFO L129 PetriNetUnfolder]: 21/49 cut-off events. [2021-03-25 22:07:08,692 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-03-25 22:07:08,693 INFO L84 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 49 events. 21/49 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 113 event pairs, 2 based on Foata normal form. 1/37 useless extension candidates. Maximal degree in co-relation 90. Up to 16 conditions per place. [2021-03-25 22:07:08,694 INFO L132 encePairwiseOnDemand]: 22/30 looper letters, 18 selfloop transitions, 10 changer transitions 1/31 dead transitions. [2021-03-25 22:07:08,694 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 31 transitions, 141 flow [2021-03-25 22:07:08,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 22:07:08,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 22:07:08,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2021-03-25 22:07:08,703 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2021-03-25 22:07:08,704 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 86 transitions. [2021-03-25 22:07:08,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 86 transitions. [2021-03-25 22:07:08,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:07:08,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 86 transitions. [2021-03-25 22:07:08,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:08,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 30.0) internal successors, (240), 8 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:08,712 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 30.0) internal successors, (240), 8 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:08,714 INFO L185 Difference]: Start difference. First operand has 17 places, 12 transitions, 36 flow. Second operand 7 states and 86 transitions. [2021-03-25 22:07:08,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 31 transitions, 141 flow [2021-03-25 22:07:08,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 31 transitions, 127 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 22:07:08,719 INFO L241 Difference]: Finished difference. Result has 24 places, 21 transitions, 95 flow [2021-03-25 22:07:08,720 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=95, PETRI_PLACES=24, PETRI_TRANSITIONS=21} [2021-03-25 22:07:08,721 INFO L343 CegarLoopForPetriNet]: 17 programPoint places, 7 predicate places. [2021-03-25 22:07:08,721 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 22:07:08,721 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 24 places, 21 transitions, 95 flow [2021-03-25 22:07:08,722 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 24 places, 21 transitions, 95 flow [2021-03-25 22:07:08,722 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 23 places, 21 transitions, 95 flow [2021-03-25 22:07:08,727 INFO L129 PetriNetUnfolder]: 8/27 cut-off events. [2021-03-25 22:07:08,727 INFO L130 PetriNetUnfolder]: For 3/4 co-relation queries the response was YES. [2021-03-25 22:07:08,728 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 27 events. 8/27 cut-off events. For 3/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 54 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 58. Up to 8 conditions per place. [2021-03-25 22:07:08,728 INFO L142 LiptonReduction]: Number of co-enabled transitions 42 [2021-03-25 22:07:08,752 INFO L154 LiptonReduction]: Checked pairs total: 1 [2021-03-25 22:07:08,752 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 22:07:08,752 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 31 [2021-03-25 22:07:08,753 INFO L480 AbstractCegarLoop]: Abstraction has has 22 places, 20 transitions, 89 flow [2021-03-25 22:07:08,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:08,754 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:07:08,754 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:07:08,754 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 22:07:08,754 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 22:07:08,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:07:08,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1795365850, now seen corresponding path program 2 times [2021-03-25 22:07:08,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:07:08,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633138776] [2021-03-25 22:07:08,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:07:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:07:08,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:08,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:07:08,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:08,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:08,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:08,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:08,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:08,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:08,813 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 22:07:08,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:08,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:08,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633138776] [2021-03-25 22:07:08,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:07:08,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 22:07:08,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330737915] [2021-03-25 22:07:08,825 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 22:07:08,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:07:08,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 22:07:08,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-25 22:07:08,827 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2021-03-25 22:07:08,827 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 20 transitions, 89 flow. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:08,827 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:07:08,827 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2021-03-25 22:07:08,827 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:07:08,920 INFO L129 PetriNetUnfolder]: 32/65 cut-off events. [2021-03-25 22:07:08,920 INFO L130 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2021-03-25 22:07:08,921 INFO L84 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 65 events. 32/65 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 152 event pairs, 4 based on Foata normal form. 1/66 useless extension candidates. Maximal degree in co-relation 206. Up to 29 conditions per place. [2021-03-25 22:07:08,922 INFO L132 encePairwiseOnDemand]: 23/31 looper letters, 18 selfloop transitions, 17 changer transitions 1/38 dead transitions. [2021-03-25 22:07:08,922 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 38 transitions, 247 flow [2021-03-25 22:07:08,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 22:07:08,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 22:07:08,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2021-03-25 22:07:08,924 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.39631336405529954 [2021-03-25 22:07:08,924 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 86 transitions. [2021-03-25 22:07:08,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 86 transitions. [2021-03-25 22:07:08,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:07:08,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 86 transitions. [2021-03-25 22:07:08,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:08,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 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) [2021-03-25 22:07:08,926 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 31.0) internal successors, (248), 8 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) [2021-03-25 22:07:08,926 INFO L185 Difference]: Start difference. First operand has 22 places, 20 transitions, 89 flow. Second operand 7 states and 86 transitions. [2021-03-25 22:07:08,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 38 transitions, 247 flow [2021-03-25 22:07:08,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 38 transitions, 227 flow, removed 10 selfloop flow, removed 2 redundant places. [2021-03-25 22:07:08,929 INFO L241 Difference]: Finished difference. Result has 31 places, 33 transitions, 206 flow [2021-03-25 22:07:08,929 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=206, PETRI_PLACES=31, PETRI_TRANSITIONS=33} [2021-03-25 22:07:08,930 INFO L343 CegarLoopForPetriNet]: 17 programPoint places, 14 predicate places. [2021-03-25 22:07:08,930 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 22:07:08,930 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 33 transitions, 206 flow [2021-03-25 22:07:08,930 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 33 transitions, 206 flow [2021-03-25 22:07:08,931 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 33 transitions, 206 flow [2021-03-25 22:07:08,937 INFO L129 PetriNetUnfolder]: 25/51 cut-off events. [2021-03-25 22:07:08,938 INFO L130 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2021-03-25 22:07:08,938 INFO L84 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 51 events. 25/51 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 117 event pairs, 1 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 167. Up to 19 conditions per place. [2021-03-25 22:07:08,939 INFO L142 LiptonReduction]: Number of co-enabled transitions 40 [2021-03-25 22:07:08,965 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 22:07:08,966 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 22:07:08,966 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 36 [2021-03-25 22:07:08,967 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 33 transitions, 210 flow [2021-03-25 22:07:08,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:08,967 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:07:08,967 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:07:08,967 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 22:07:08,968 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 22:07:08,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:07:08,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1641119752, now seen corresponding path program 3 times [2021-03-25 22:07:08,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:07:08,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291424972] [2021-03-25 22:07:08,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:07:08,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:07:09,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:09,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:07:09,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:09,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:09,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:09,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:09,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:09,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:09,053 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 22:07:09,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:09,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:09,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291424972] [2021-03-25 22:07:09,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:07:09,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 22:07:09,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137843916] [2021-03-25 22:07:09,069 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 22:07:09,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:07:09,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 22:07:09,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-25 22:07:09,073 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2021-03-25 22:07:09,073 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 33 transitions, 210 flow. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:09,073 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:07:09,073 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2021-03-25 22:07:09,073 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:07:09,199 INFO L129 PetriNetUnfolder]: 32/66 cut-off events. [2021-03-25 22:07:09,199 INFO L130 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2021-03-25 22:07:09,200 INFO L84 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 66 events. 32/66 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 162 event pairs, 2 based on Foata normal form. 1/67 useless extension candidates. Maximal degree in co-relation 263. Up to 30 conditions per place. [2021-03-25 22:07:09,201 INFO L132 encePairwiseOnDemand]: 23/32 looper letters, 20 selfloop transitions, 19 changer transitions 1/42 dead transitions. [2021-03-25 22:07:09,201 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 42 transitions, 335 flow [2021-03-25 22:07:09,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 22:07:09,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 22:07:09,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2021-03-25 22:07:09,205 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2021-03-25 22:07:09,205 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 88 transitions. [2021-03-25 22:07:09,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 88 transitions. [2021-03-25 22:07:09,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:07:09,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 88 transitions. [2021-03-25 22:07:09,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:09,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:09,209 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 32.0) internal successors, (256), 8 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:09,209 INFO L185 Difference]: Start difference. First operand has 30 places, 33 transitions, 210 flow. Second operand 7 states and 88 transitions. [2021-03-25 22:07:09,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 42 transitions, 335 flow [2021-03-25 22:07:09,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 42 transitions, 317 flow, removed 9 selfloop flow, removed 1 redundant places. [2021-03-25 22:07:09,216 INFO L241 Difference]: Finished difference. Result has 39 places, 37 transitions, 280 flow [2021-03-25 22:07:09,216 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=280, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2021-03-25 22:07:09,216 INFO L343 CegarLoopForPetriNet]: 17 programPoint places, 22 predicate places. [2021-03-25 22:07:09,216 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 22:07:09,216 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 37 transitions, 280 flow [2021-03-25 22:07:09,217 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 37 transitions, 280 flow [2021-03-25 22:07:09,219 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 37 transitions, 280 flow [2021-03-25 22:07:09,226 INFO L129 PetriNetUnfolder]: 24/52 cut-off events. [2021-03-25 22:07:09,227 INFO L130 PetriNetUnfolder]: For 80/82 co-relation queries the response was YES. [2021-03-25 22:07:09,228 INFO L84 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 52 events. 24/52 cut-off events. For 80/82 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 123 event pairs, 1 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 202. Up to 18 conditions per place. [2021-03-25 22:07:09,230 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-25 22:07:09,297 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 22:07:09,297 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 22:07:09,297 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 81 [2021-03-25 22:07:09,302 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 37 transitions, 289 flow [2021-03-25 22:07:09,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:09,303 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:07:09,303 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:07:09,303 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 22:07:09,303 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 22:07:09,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:07:09,304 INFO L82 PathProgramCache]: Analyzing trace with hash -2137397495, now seen corresponding path program 1 times [2021-03-25 22:07:09,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:07:09,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110332210] [2021-03-25 22:07:09,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:07:09,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:07:09,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:09,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:09,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:09,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:09,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:09,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:09,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:09,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:09,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:09,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110332210] [2021-03-25 22:07:09,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:07:09,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 22:07:09,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358369254] [2021-03-25 22:07:09,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 22:07:09,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:07:09,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 22:07:09,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 22:07:09,377 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 35 [2021-03-25 22:07:09,377 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 37 transitions, 289 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:09,377 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:07:09,378 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 35 [2021-03-25 22:07:09,378 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:07:09,409 INFO L129 PetriNetUnfolder]: 25/61 cut-off events. [2021-03-25 22:07:09,409 INFO L130 PetriNetUnfolder]: For 114/120 co-relation queries the response was YES. [2021-03-25 22:07:09,410 INFO L84 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 61 events. 25/61 cut-off events. For 114/120 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 165 event pairs, 0 based on Foata normal form. 4/63 useless extension candidates. Maximal degree in co-relation 249. Up to 18 conditions per place. [2021-03-25 22:07:09,410 INFO L132 encePairwiseOnDemand]: 29/35 looper letters, 13 selfloop transitions, 11 changer transitions 0/40 dead transitions. [2021-03-25 22:07:09,410 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 40 transitions, 349 flow [2021-03-25 22:07:09,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 22:07:09,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 22:07:09,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2021-03-25 22:07:09,412 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2021-03-25 22:07:09,412 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 88 transitions. [2021-03-25 22:07:09,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 88 transitions. [2021-03-25 22:07:09,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:07:09,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 88 transitions. [2021-03-25 22:07:09,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:09,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:09,414 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:09,414 INFO L185 Difference]: Start difference. First operand has 38 places, 37 transitions, 289 flow. Second operand 4 states and 88 transitions. [2021-03-25 22:07:09,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 40 transitions, 349 flow [2021-03-25 22:07:09,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 40 transitions, 295 flow, removed 12 selfloop flow, removed 4 redundant places. [2021-03-25 22:07:09,417 INFO L241 Difference]: Finished difference. Result has 38 places, 38 transitions, 275 flow [2021-03-25 22:07:09,417 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=275, PETRI_PLACES=38, PETRI_TRANSITIONS=38} [2021-03-25 22:07:09,417 INFO L343 CegarLoopForPetriNet]: 17 programPoint places, 21 predicate places. [2021-03-25 22:07:09,417 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 22:07:09,418 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 38 transitions, 275 flow [2021-03-25 22:07:09,418 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 38 transitions, 275 flow [2021-03-25 22:07:09,418 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 38 transitions, 275 flow [2021-03-25 22:07:09,423 INFO L129 PetriNetUnfolder]: 25/59 cut-off events. [2021-03-25 22:07:09,424 INFO L130 PetriNetUnfolder]: For 103/105 co-relation queries the response was YES. [2021-03-25 22:07:09,424 INFO L84 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 59 events. 25/59 cut-off events. For 103/105 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 157 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 197. Up to 17 conditions per place. [2021-03-25 22:07:09,425 INFO L142 LiptonReduction]: Number of co-enabled transitions 36 [2021-03-25 22:07:09,427 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 22:07:09,427 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 22:07:09,427 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10 [2021-03-25 22:07:09,428 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 38 transitions, 275 flow [2021-03-25 22:07:09,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:09,428 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:07:09,428 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:07:09,429 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 22:07:09,429 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 22:07:09,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:07:09,429 INFO L82 PathProgramCache]: Analyzing trace with hash -479148765, now seen corresponding path program 1 times [2021-03-25 22:07:09,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:07:09,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401884907] [2021-03-25 22:07:09,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:07:09,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:07:09,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:09,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:07:09,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:09,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:09,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:09,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:09,467 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 22:07:09,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:09,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:09,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401884907] [2021-03-25 22:07:09,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:07:09,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 22:07:09,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324503233] [2021-03-25 22:07:09,478 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 22:07:09,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:07:09,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 22:07:09,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-25 22:07:09,479 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2021-03-25 22:07:09,479 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 38 transitions, 275 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 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) [2021-03-25 22:07:09,479 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:07:09,479 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2021-03-25 22:07:09,479 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:07:09,541 INFO L129 PetriNetUnfolder]: 27/67 cut-off events. [2021-03-25 22:07:09,541 INFO L130 PetriNetUnfolder]: For 120/120 co-relation queries the response was YES. [2021-03-25 22:07:09,542 INFO L84 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 67 events. 27/67 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 198 event pairs, 0 based on Foata normal form. 1/68 useless extension candidates. Maximal degree in co-relation 256. Up to 27 conditions per place. [2021-03-25 22:07:09,542 INFO L132 encePairwiseOnDemand]: 27/35 looper letters, 15 selfloop transitions, 17 changer transitions 1/42 dead transitions. [2021-03-25 22:07:09,542 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 42 transitions, 368 flow [2021-03-25 22:07:09,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 22:07:09,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 22:07:09,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2021-03-25 22:07:09,543 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.49047619047619045 [2021-03-25 22:07:09,544 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 103 transitions. [2021-03-25 22:07:09,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 103 transitions. [2021-03-25 22:07:09,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:07:09,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 103 transitions. [2021-03-25 22:07:09,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 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) [2021-03-25 22:07:09,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:09,545 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:09,545 INFO L185 Difference]: Start difference. First operand has 38 places, 38 transitions, 275 flow. Second operand 6 states and 103 transitions. [2021-03-25 22:07:09,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 42 transitions, 368 flow [2021-03-25 22:07:09,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 42 transitions, 353 flow, removed 4 selfloop flow, removed 1 redundant places. [2021-03-25 22:07:09,548 INFO L241 Difference]: Finished difference. Result has 44 places, 40 transitions, 323 flow [2021-03-25 22:07:09,548 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=323, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2021-03-25 22:07:09,548 INFO L343 CegarLoopForPetriNet]: 17 programPoint places, 27 predicate places. [2021-03-25 22:07:09,549 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 22:07:09,549 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 44 places, 40 transitions, 323 flow [2021-03-25 22:07:09,549 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 44 places, 40 transitions, 323 flow [2021-03-25 22:07:09,549 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 43 places, 40 transitions, 323 flow [2021-03-25 22:07:09,555 INFO L129 PetriNetUnfolder]: 26/63 cut-off events. [2021-03-25 22:07:09,555 INFO L130 PetriNetUnfolder]: For 146/148 co-relation queries the response was YES. [2021-03-25 22:07:09,555 INFO L84 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 63 events. 26/63 cut-off events. For 146/148 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 180 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 246. Up to 18 conditions per place. [2021-03-25 22:07:09,556 INFO L142 LiptonReduction]: Number of co-enabled transitions 38 [2021-03-25 22:07:09,558 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 22:07:09,559 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 22:07:09,559 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10 [2021-03-25 22:07:09,559 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 323 flow [2021-03-25 22:07:09,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 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) [2021-03-25 22:07:09,559 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:07:09,559 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:07:09,560 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 22:07:09,560 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 22:07:09,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:07:09,560 INFO L82 PathProgramCache]: Analyzing trace with hash -2052433563, now seen corresponding path program 1 times [2021-03-25 22:07:09,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:07:09,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905261388] [2021-03-25 22:07:09,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:07:09,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:07:09,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:09,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:09,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:09,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:09,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:09,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:09,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:09,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:09,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:09,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905261388] [2021-03-25 22:07:09,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:07:09,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 22:07:09,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752097089] [2021-03-25 22:07:09,578 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 22:07:09,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:07:09,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 22:07:09,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 22:07:09,578 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 35 [2021-03-25 22:07:09,579 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 323 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:09,579 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:07:09,579 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 35 [2021-03-25 22:07:09,579 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:07:09,624 INFO L129 PetriNetUnfolder]: 26/69 cut-off events. [2021-03-25 22:07:09,624 INFO L130 PetriNetUnfolder]: For 178/184 co-relation queries the response was YES. [2021-03-25 22:07:09,624 INFO L84 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 69 events. 26/69 cut-off events. For 178/184 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 209 event pairs, 0 based on Foata normal form. 6/75 useless extension candidates. Maximal degree in co-relation 298. Up to 23 conditions per place. [2021-03-25 22:07:09,625 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 14 selfloop transitions, 11 changer transitions 0/42 dead transitions. [2021-03-25 22:07:09,625 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 42 transitions, 388 flow [2021-03-25 22:07:09,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 22:07:09,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 22:07:09,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2021-03-25 22:07:09,626 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6214285714285714 [2021-03-25 22:07:09,626 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 87 transitions. [2021-03-25 22:07:09,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 87 transitions. [2021-03-25 22:07:09,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:07:09,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 87 transitions. [2021-03-25 22:07:09,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:09,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:09,628 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:09,628 INFO L185 Difference]: Start difference. First operand has 43 places, 40 transitions, 323 flow. Second operand 4 states and 87 transitions. [2021-03-25 22:07:09,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 42 transitions, 388 flow [2021-03-25 22:07:09,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 42 transitions, 350 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-03-25 22:07:09,632 INFO L241 Difference]: Finished difference. Result has 43 places, 42 transitions, 329 flow [2021-03-25 22:07:09,632 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=329, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2021-03-25 22:07:09,632 INFO L343 CegarLoopForPetriNet]: 17 programPoint places, 26 predicate places. [2021-03-25 22:07:09,632 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 22:07:09,632 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 43 places, 42 transitions, 329 flow [2021-03-25 22:07:09,632 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 43 places, 42 transitions, 329 flow [2021-03-25 22:07:09,633 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 43 places, 42 transitions, 329 flow [2021-03-25 22:07:09,641 INFO L129 PetriNetUnfolder]: 27/69 cut-off events. [2021-03-25 22:07:09,641 INFO L130 PetriNetUnfolder]: For 138/138 co-relation queries the response was YES. [2021-03-25 22:07:09,642 INFO L84 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 69 events. 27/69 cut-off events. For 138/138 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 208 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 240. Up to 19 conditions per place. [2021-03-25 22:07:09,642 INFO L142 LiptonReduction]: Number of co-enabled transitions 40 [2021-03-25 22:07:09,645 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 22:07:09,645 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 22:07:09,645 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 13 [2021-03-25 22:07:09,648 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 329 flow [2021-03-25 22:07:09,648 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:09,648 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:07:09,648 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:07:09,649 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 22:07:09,649 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 22:07:09,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:07:09,649 INFO L82 PathProgramCache]: Analyzing trace with hash -2029315747, now seen corresponding path program 1 times [2021-03-25 22:07:09,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:07:09,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109791277] [2021-03-25 22:07:09,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:07:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:07:09,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:09,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:09,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:09,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:09,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:09,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:09,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:09,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:09,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:09,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109791277] [2021-03-25 22:07:09,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:07:09,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 22:07:09,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932596524] [2021-03-25 22:07:09,689 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 22:07:09,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:07:09,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 22:07:09,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 22:07:09,689 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 35 [2021-03-25 22:07:09,690 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 329 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 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) [2021-03-25 22:07:09,690 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:07:09,690 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 35 [2021-03-25 22:07:09,690 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:07:09,722 INFO L129 PetriNetUnfolder]: 25/64 cut-off events. [2021-03-25 22:07:09,723 INFO L130 PetriNetUnfolder]: For 142/142 co-relation queries the response was YES. [2021-03-25 22:07:09,723 INFO L84 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 64 events. 25/64 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 179 event pairs, 0 based on Foata normal form. 1/65 useless extension candidates. Maximal degree in co-relation 258. Up to 19 conditions per place. [2021-03-25 22:07:09,724 INFO L132 encePairwiseOnDemand]: 29/35 looper letters, 13 selfloop transitions, 11 changer transitions 1/42 dead transitions. [2021-03-25 22:07:09,724 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 42 transitions, 381 flow [2021-03-25 22:07:09,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 22:07:09,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 22:07:09,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2021-03-25 22:07:09,725 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2021-03-25 22:07:09,725 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 85 transitions. [2021-03-25 22:07:09,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 85 transitions. [2021-03-25 22:07:09,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:07:09,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 85 transitions. [2021-03-25 22:07:09,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:09,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:09,726 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:09,727 INFO L185 Difference]: Start difference. First operand has 43 places, 42 transitions, 329 flow. Second operand 4 states and 85 transitions. [2021-03-25 22:07:09,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 42 transitions, 381 flow [2021-03-25 22:07:09,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 42 transitions, 370 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-25 22:07:09,730 INFO L241 Difference]: Finished difference. Result has 45 places, 40 transitions, 320 flow [2021-03-25 22:07:09,730 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=320, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2021-03-25 22:07:09,731 INFO L343 CegarLoopForPetriNet]: 17 programPoint places, 28 predicate places. [2021-03-25 22:07:09,731 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 22:07:09,731 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 40 transitions, 320 flow [2021-03-25 22:07:09,731 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 40 transitions, 320 flow [2021-03-25 22:07:09,732 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 45 places, 40 transitions, 320 flow [2021-03-25 22:07:09,744 INFO L129 PetriNetUnfolder]: 25/62 cut-off events. [2021-03-25 22:07:09,744 INFO L130 PetriNetUnfolder]: For 138/140 co-relation queries the response was YES. [2021-03-25 22:07:09,744 INFO L84 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 62 events. 25/62 cut-off events. For 138/140 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 173 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 226. Up to 18 conditions per place. [2021-03-25 22:07:09,745 INFO L142 LiptonReduction]: Number of co-enabled transitions 40 [2021-03-25 22:07:09,748 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 22:07:09,748 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 22:07:09,748 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 17 [2021-03-25 22:07:09,748 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 320 flow [2021-03-25 22:07:09,749 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 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) [2021-03-25 22:07:09,749 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:07:09,749 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:07:09,749 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 22:07:09,749 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 22:07:09,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:07:09,749 INFO L82 PathProgramCache]: Analyzing trace with hash -966014201, now seen corresponding path program 1 times [2021-03-25 22:07:09,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:07:09,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998059905] [2021-03-25 22:07:09,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:07:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:07:09,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:09,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:09,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:09,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:09,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:09,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:09,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:09,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:09,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:09,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998059905] [2021-03-25 22:07:09,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:07:09,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 22:07:09,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564255595] [2021-03-25 22:07:09,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 22:07:09,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:07:09,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 22:07:09,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 22:07:09,790 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 35 [2021-03-25 22:07:09,790 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 320 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:09,791 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:07:09,791 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 35 [2021-03-25 22:07:09,791 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:07:09,824 INFO L129 PetriNetUnfolder]: 30/86 cut-off events. [2021-03-25 22:07:09,824 INFO L130 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2021-03-25 22:07:09,825 INFO L84 FinitePrefix]: Finished finitePrefix Result has 384 conditions, 86 events. 30/86 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 298 event pairs, 1 based on Foata normal form. 2/88 useless extension candidates. Maximal degree in co-relation 339. Up to 30 conditions per place. [2021-03-25 22:07:09,826 INFO L132 encePairwiseOnDemand]: 31/35 looper letters, 18 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2021-03-25 22:07:09,826 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 45 transitions, 409 flow [2021-03-25 22:07:09,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 22:07:09,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 22:07:09,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2021-03-25 22:07:09,827 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2021-03-25 22:07:09,827 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 86 transitions. [2021-03-25 22:07:09,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 86 transitions. [2021-03-25 22:07:09,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:07:09,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 86 transitions. [2021-03-25 22:07:09,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:09,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:09,829 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:09,829 INFO L185 Difference]: Start difference. First operand has 45 places, 40 transitions, 320 flow. Second operand 4 states and 86 transitions. [2021-03-25 22:07:09,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 45 transitions, 409 flow [2021-03-25 22:07:09,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 388 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-25 22:07:09,834 INFO L241 Difference]: Finished difference. Result has 47 places, 43 transitions, 350 flow [2021-03-25 22:07:09,834 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=350, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2021-03-25 22:07:09,834 INFO L343 CegarLoopForPetriNet]: 17 programPoint places, 30 predicate places. [2021-03-25 22:07:09,834 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 22:07:09,835 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 47 places, 43 transitions, 350 flow [2021-03-25 22:07:09,835 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 47 places, 43 transitions, 350 flow [2021-03-25 22:07:09,838 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 47 places, 43 transitions, 350 flow [2021-03-25 22:07:09,845 INFO L129 PetriNetUnfolder]: 29/79 cut-off events. [2021-03-25 22:07:09,846 INFO L130 PetriNetUnfolder]: For 152/154 co-relation queries the response was YES. [2021-03-25 22:07:09,846 INFO L84 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 79 events. 29/79 cut-off events. For 152/154 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 275 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 279. Up to 21 conditions per place. [2021-03-25 22:07:09,847 INFO L142 LiptonReduction]: Number of co-enabled transitions 46 [2021-03-25 22:07:09,850 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 22:07:09,865 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 22:07:09,865 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 31 [2021-03-25 22:07:09,866 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 350 flow [2021-03-25 22:07:09,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:09,866 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:07:09,866 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:07:09,867 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 22:07:09,867 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 22:07:09,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:07:09,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1058448947, now seen corresponding path program 1 times [2021-03-25 22:07:09,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:07:09,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083716095] [2021-03-25 22:07:09,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:07:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:07:09,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:09,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:09,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:09,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:09,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:09,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:09,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:09,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:09,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:09,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083716095] [2021-03-25 22:07:09,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:07:09,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 22:07:09,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840348221] [2021-03-25 22:07:09,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 22:07:09,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:07:09,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 22:07:09,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 22:07:09,898 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 35 [2021-03-25 22:07:09,899 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 350 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 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) [2021-03-25 22:07:09,899 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:07:09,899 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 35 [2021-03-25 22:07:09,899 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:07:09,926 INFO L129 PetriNetUnfolder]: 28/82 cut-off events. [2021-03-25 22:07:09,926 INFO L130 PetriNetUnfolder]: For 181/181 co-relation queries the response was YES. [2021-03-25 22:07:09,927 INFO L84 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 82 events. 28/82 cut-off events. For 181/181 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 277 event pairs, 1 based on Foata normal form. 1/83 useless extension candidates. Maximal degree in co-relation 346. Up to 22 conditions per place. [2021-03-25 22:07:09,927 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 15 selfloop transitions, 10 changer transitions 1/42 dead transitions. [2021-03-25 22:07:09,927 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 398 flow [2021-03-25 22:07:09,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 22:07:09,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 22:07:09,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2021-03-25 22:07:09,928 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6 [2021-03-25 22:07:09,928 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 84 transitions. [2021-03-25 22:07:09,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 84 transitions. [2021-03-25 22:07:09,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:07:09,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 84 transitions. [2021-03-25 22:07:09,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 21.0) internal successors, (84), 4 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) [2021-03-25 22:07:09,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:09,930 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:09,930 INFO L185 Difference]: Start difference. First operand has 47 places, 43 transitions, 350 flow. Second operand 4 states and 84 transitions. [2021-03-25 22:07:09,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 398 flow [2021-03-25 22:07:09,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 42 transitions, 391 flow, removed 3 selfloop flow, removed 1 redundant places. [2021-03-25 22:07:09,933 INFO L241 Difference]: Finished difference. Result has 49 places, 40 transitions, 333 flow [2021-03-25 22:07:09,933 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=333, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2021-03-25 22:07:09,933 INFO L343 CegarLoopForPetriNet]: 17 programPoint places, 32 predicate places. [2021-03-25 22:07:09,934 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 22:07:09,934 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 49 places, 40 transitions, 333 flow [2021-03-25 22:07:09,934 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 49 places, 40 transitions, 333 flow [2021-03-25 22:07:09,935 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 47 places, 40 transitions, 333 flow [2021-03-25 22:07:09,940 INFO L129 PetriNetUnfolder]: 27/75 cut-off events. [2021-03-25 22:07:09,940 INFO L130 PetriNetUnfolder]: For 168/170 co-relation queries the response was YES. [2021-03-25 22:07:09,941 INFO L84 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 75 events. 27/75 cut-off events. For 168/170 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 245 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 286. Up to 20 conditions per place. [2021-03-25 22:07:09,941 INFO L142 LiptonReduction]: Number of co-enabled transitions 42 [2021-03-25 22:07:09,945 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 22:07:09,945 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 22:07:09,945 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 12 [2021-03-25 22:07:09,945 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 333 flow [2021-03-25 22:07:09,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 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) [2021-03-25 22:07:09,946 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:07:09,946 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:07:09,946 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 22:07:09,946 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 22:07:09,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:07:09,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1796259580, now seen corresponding path program 4 times [2021-03-25 22:07:09,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:07:09,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894914088] [2021-03-25 22:07:09,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:07:09,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:07:09,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:09,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:07:09,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:09,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:09,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:09,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:09,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:09,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:10,012 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 22:07:10,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:10,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:10,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894914088] [2021-03-25 22:07:10,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:07:10,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 22:07:10,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968143888] [2021-03-25 22:07:10,021 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 22:07:10,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:07:10,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 22:07:10,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-25 22:07:10,021 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2021-03-25 22:07:10,022 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 333 flow. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:10,022 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:07:10,022 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2021-03-25 22:07:10,022 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:07:10,089 INFO L129 PetriNetUnfolder]: 34/91 cut-off events. [2021-03-25 22:07:10,089 INFO L130 PetriNetUnfolder]: For 165/165 co-relation queries the response was YES. [2021-03-25 22:07:10,090 INFO L84 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 91 events. 34/91 cut-off events. For 165/165 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 307 event pairs, 2 based on Foata normal form. 1/92 useless extension candidates. Maximal degree in co-relation 410. Up to 43 conditions per place. [2021-03-25 22:07:10,090 INFO L132 encePairwiseOnDemand]: 27/35 looper letters, 26 selfloop transitions, 16 changer transitions 1/45 dead transitions. [2021-03-25 22:07:10,090 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 45 transitions, 445 flow [2021-03-25 22:07:10,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 22:07:10,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 22:07:10,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2021-03-25 22:07:10,091 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3469387755102041 [2021-03-25 22:07:10,091 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 85 transitions. [2021-03-25 22:07:10,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 85 transitions. [2021-03-25 22:07:10,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:07:10,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 85 transitions. [2021-03-25 22:07:10,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:10,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 35.0) internal successors, (280), 8 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:10,093 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 35.0) internal successors, (280), 8 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:10,093 INFO L185 Difference]: Start difference. First operand has 47 places, 40 transitions, 333 flow. Second operand 7 states and 85 transitions. [2021-03-25 22:07:10,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 45 transitions, 445 flow [2021-03-25 22:07:10,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 45 transitions, 429 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-03-25 22:07:10,096 INFO L241 Difference]: Finished difference. Result has 52 places, 41 transitions, 362 flow [2021-03-25 22:07:10,096 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=362, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2021-03-25 22:07:10,096 INFO L343 CegarLoopForPetriNet]: 17 programPoint places, 35 predicate places. [2021-03-25 22:07:10,096 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 22:07:10,096 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 52 places, 41 transitions, 362 flow [2021-03-25 22:07:10,096 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 52 places, 41 transitions, 362 flow [2021-03-25 22:07:10,097 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 41 transitions, 362 flow [2021-03-25 22:07:10,102 INFO L129 PetriNetUnfolder]: 28/78 cut-off events. [2021-03-25 22:07:10,102 INFO L130 PetriNetUnfolder]: For 162/164 co-relation queries the response was YES. [2021-03-25 22:07:10,103 INFO L84 FinitePrefix]: Finished finitePrefix Result has 343 conditions, 78 events. 28/78 cut-off events. For 162/164 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 260 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 316. Up to 21 conditions per place. [2021-03-25 22:07:10,103 INFO L142 LiptonReduction]: Number of co-enabled transitions 42 [2021-03-25 22:07:10,106 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 22:07:10,106 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 22:07:10,106 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 10 [2021-03-25 22:07:10,107 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 362 flow [2021-03-25 22:07:10,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:10,107 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:07:10,107 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:07:10,107 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-25 22:07:10,107 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 22:07:10,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:07:10,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1159030090, now seen corresponding path program 5 times [2021-03-25 22:07:10,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:07:10,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169835663] [2021-03-25 22:07:10,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:07:10,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:07:10,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:07:10,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:10,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:10,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:10,148 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 22:07:10,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:10,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:10,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169835663] [2021-03-25 22:07:10,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:07:10,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 22:07:10,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889956640] [2021-03-25 22:07:10,157 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 22:07:10,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:07:10,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 22:07:10,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-25 22:07:10,158 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2021-03-25 22:07:10,158 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 362 flow. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:10,158 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:07:10,159 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2021-03-25 22:07:10,159 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:07:10,229 INFO L129 PetriNetUnfolder]: 34/87 cut-off events. [2021-03-25 22:07:10,229 INFO L130 PetriNetUnfolder]: For 174/174 co-relation queries the response was YES. [2021-03-25 22:07:10,230 INFO L84 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 87 events. 34/87 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 280 event pairs, 2 based on Foata normal form. 1/88 useless extension candidates. Maximal degree in co-relation 428. Up to 35 conditions per place. [2021-03-25 22:07:10,230 INFO L132 encePairwiseOnDemand]: 27/35 looper letters, 29 selfloop transitions, 17 changer transitions 1/49 dead transitions. [2021-03-25 22:07:10,230 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 49 transitions, 504 flow [2021-03-25 22:07:10,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 22:07:10,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 22:07:10,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2021-03-25 22:07:10,231 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3510204081632653 [2021-03-25 22:07:10,231 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 86 transitions. [2021-03-25 22:07:10,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 86 transitions. [2021-03-25 22:07:10,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:07:10,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 86 transitions. [2021-03-25 22:07:10,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:10,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 35.0) internal successors, (280), 8 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:10,233 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 35.0) internal successors, (280), 8 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:10,233 INFO L185 Difference]: Start difference. First operand has 51 places, 41 transitions, 362 flow. Second operand 7 states and 86 transitions. [2021-03-25 22:07:10,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 49 transitions, 504 flow [2021-03-25 22:07:10,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 49 transitions, 470 flow, removed 2 selfloop flow, removed 5 redundant places. [2021-03-25 22:07:10,236 INFO L241 Difference]: Finished difference. Result has 55 places, 44 transitions, 400 flow [2021-03-25 22:07:10,236 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=400, PETRI_PLACES=55, PETRI_TRANSITIONS=44} [2021-03-25 22:07:10,236 INFO L343 CegarLoopForPetriNet]: 17 programPoint places, 38 predicate places. [2021-03-25 22:07:10,236 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 22:07:10,237 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 44 transitions, 400 flow [2021-03-25 22:07:10,237 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 44 transitions, 400 flow [2021-03-25 22:07:10,237 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 44 transitions, 400 flow [2021-03-25 22:07:10,245 INFO L129 PetriNetUnfolder]: 26/72 cut-off events. [2021-03-25 22:07:10,245 INFO L130 PetriNetUnfolder]: For 169/171 co-relation queries the response was YES. [2021-03-25 22:07:10,246 INFO L84 FinitePrefix]: Finished finitePrefix Result has 338 conditions, 72 events. 26/72 cut-off events. For 169/171 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 226 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 311. Up to 19 conditions per place. [2021-03-25 22:07:10,246 INFO L142 LiptonReduction]: Number of co-enabled transitions 42 [2021-03-25 22:07:10,268 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 22:07:10,268 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 22:07:10,269 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 33 [2021-03-25 22:07:10,269 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 392 flow [2021-03-25 22:07:10,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:10,269 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:07:10,269 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:07:10,269 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-25 22:07:10,270 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 22:07:10,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:07:10,271 INFO L82 PathProgramCache]: Analyzing trace with hash 886383016, now seen corresponding path program 1 times [2021-03-25 22:07:10,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:07:10,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205048652] [2021-03-25 22:07:10,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:07:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:07:10,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:10,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:10,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:10,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:10,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:10,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:10,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205048652] [2021-03-25 22:07:10,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:07:10,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 22:07:10,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745101332] [2021-03-25 22:07:10,300 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 22:07:10,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:07:10,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 22:07:10,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 22:07:10,301 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2021-03-25 22:07:10,301 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 392 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:10,301 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:07:10,301 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2021-03-25 22:07:10,302 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:07:10,351 INFO L129 PetriNetUnfolder]: 36/87 cut-off events. [2021-03-25 22:07:10,351 INFO L130 PetriNetUnfolder]: For 216/216 co-relation queries the response was YES. [2021-03-25 22:07:10,351 INFO L84 FinitePrefix]: Finished finitePrefix Result has 471 conditions, 87 events. 36/87 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 273 event pairs, 0 based on Foata normal form. 2/89 useless extension candidates. Maximal degree in co-relation 443. Up to 41 conditions per place. [2021-03-25 22:07:10,352 INFO L132 encePairwiseOnDemand]: 28/36 looper letters, 40 selfloop transitions, 14 changer transitions 0/57 dead transitions. [2021-03-25 22:07:10,352 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 57 transitions, 614 flow [2021-03-25 22:07:10,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 22:07:10,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 22:07:10,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2021-03-25 22:07:10,353 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2021-03-25 22:07:10,353 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 76 transitions. [2021-03-25 22:07:10,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 76 transitions. [2021-03-25 22:07:10,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:07:10,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 76 transitions. [2021-03-25 22:07:10,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:10,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:10,354 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:10,355 INFO L185 Difference]: Start difference. First operand has 53 places, 43 transitions, 392 flow. Second operand 5 states and 76 transitions. [2021-03-25 22:07:10,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 57 transitions, 614 flow [2021-03-25 22:07:10,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 57 transitions, 556 flow, removed 9 selfloop flow, removed 5 redundant places. [2021-03-25 22:07:10,358 INFO L241 Difference]: Finished difference. Result has 54 places, 46 transitions, 426 flow [2021-03-25 22:07:10,358 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=426, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2021-03-25 22:07:10,358 INFO L343 CegarLoopForPetriNet]: 17 programPoint places, 37 predicate places. [2021-03-25 22:07:10,359 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 22:07:10,359 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 54 places, 46 transitions, 426 flow [2021-03-25 22:07:10,359 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 46 transitions, 426 flow [2021-03-25 22:07:10,359 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 46 transitions, 426 flow [2021-03-25 22:07:10,366 INFO L129 PetriNetUnfolder]: 28/76 cut-off events. [2021-03-25 22:07:10,366 INFO L130 PetriNetUnfolder]: For 223/225 co-relation queries the response was YES. [2021-03-25 22:07:10,366 INFO L84 FinitePrefix]: Finished finitePrefix Result has 348 conditions, 76 events. 28/76 cut-off events. For 223/225 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 248 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 305. Up to 21 conditions per place. [2021-03-25 22:07:10,367 INFO L142 LiptonReduction]: Number of co-enabled transitions 46 [2021-03-25 22:07:10,370 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 22:07:10,370 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 22:07:10,370 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11 [2021-03-25 22:07:10,372 INFO L480 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 426 flow [2021-03-25 22:07:10,372 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:10,372 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:07:10,372 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:07:10,372 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-25 22:07:10,372 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 22:07:10,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:07:10,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1131324460, now seen corresponding path program 1 times [2021-03-25 22:07:10,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:07:10,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676919160] [2021-03-25 22:07:10,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:07:10,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:07:10,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:10,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:10,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:10,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:10,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:10,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676919160] [2021-03-25 22:07:10,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:07:10,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-25 22:07:10,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782190643] [2021-03-25 22:07:10,389 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 22:07:10,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:07:10,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 22:07:10,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 22:07:10,390 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 36 [2021-03-25 22:07:10,390 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 426 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:10,390 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:07:10,390 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 36 [2021-03-25 22:07:10,390 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:07:10,420 INFO L129 PetriNetUnfolder]: 29/80 cut-off events. [2021-03-25 22:07:10,421 INFO L130 PetriNetUnfolder]: For 282/282 co-relation queries the response was YES. [2021-03-25 22:07:10,421 INFO L84 FinitePrefix]: Finished finitePrefix Result has 416 conditions, 80 events. 29/80 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 263 event pairs, 1 based on Foata normal form. 1/81 useless extension candidates. Maximal degree in co-relation 370. Up to 29 conditions per place. [2021-03-25 22:07:10,422 INFO L132 encePairwiseOnDemand]: 32/36 looper letters, 13 selfloop transitions, 15 changer transitions 0/46 dead transitions. [2021-03-25 22:07:10,422 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 46 transitions, 484 flow [2021-03-25 22:07:10,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 22:07:10,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 22:07:10,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2021-03-25 22:07:10,423 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2021-03-25 22:07:10,423 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 84 transitions. [2021-03-25 22:07:10,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 84 transitions. [2021-03-25 22:07:10,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:07:10,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 84 transitions. [2021-03-25 22:07:10,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 21.0) internal successors, (84), 4 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) [2021-03-25 22:07:10,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:10,424 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:10,424 INFO L185 Difference]: Start difference. First operand has 54 places, 46 transitions, 426 flow. Second operand 4 states and 84 transitions. [2021-03-25 22:07:10,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 46 transitions, 484 flow [2021-03-25 22:07:10,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 46 transitions, 461 flow, removed 4 selfloop flow, removed 3 redundant places. [2021-03-25 22:07:10,427 INFO L241 Difference]: Finished difference. Result has 55 places, 46 transitions, 452 flow [2021-03-25 22:07:10,428 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=452, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2021-03-25 22:07:10,428 INFO L343 CegarLoopForPetriNet]: 17 programPoint places, 38 predicate places. [2021-03-25 22:07:10,428 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 22:07:10,428 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 46 transitions, 452 flow [2021-03-25 22:07:10,428 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 46 transitions, 452 flow [2021-03-25 22:07:10,429 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 55 places, 46 transitions, 452 flow [2021-03-25 22:07:10,434 INFO L129 PetriNetUnfolder]: 26/72 cut-off events. [2021-03-25 22:07:10,435 INFO L130 PetriNetUnfolder]: For 242/244 co-relation queries the response was YES. [2021-03-25 22:07:10,435 INFO L84 FinitePrefix]: Finished finitePrefix Result has 363 conditions, 72 events. 26/72 cut-off events. For 242/244 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 234 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 322. Up to 21 conditions per place. [2021-03-25 22:07:10,436 INFO L142 LiptonReduction]: Number of co-enabled transitions 48 [2021-03-25 22:07:10,439 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 22:07:10,439 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 22:07:10,439 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11 [2021-03-25 22:07:10,439 INFO L480 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 452 flow [2021-03-25 22:07:10,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:10,440 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:07:10,440 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:07:10,440 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-25 22:07:10,440 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 22:07:10,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:07:10,440 INFO L82 PathProgramCache]: Analyzing trace with hash 949771195, now seen corresponding path program 1 times [2021-03-25 22:07:10,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:07:10,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656933664] [2021-03-25 22:07:10,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:07:10,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:07:10,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:10,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:10,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:10,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:10,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:10,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:10,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656933664] [2021-03-25 22:07:10,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:07:10,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 22:07:10,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875958816] [2021-03-25 22:07:10,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 22:07:10,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:07:10,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 22:07:10,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 22:07:10,459 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2021-03-25 22:07:10,459 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 452 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:10,459 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:07:10,460 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2021-03-25 22:07:10,460 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:07:10,505 INFO L129 PetriNetUnfolder]: 37/90 cut-off events. [2021-03-25 22:07:10,505 INFO L130 PetriNetUnfolder]: For 277/277 co-relation queries the response was YES. [2021-03-25 22:07:10,505 INFO L84 FinitePrefix]: Finished finitePrefix Result has 506 conditions, 90 events. 37/90 cut-off events. For 277/277 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 273 event pairs, 4 based on Foata normal form. 2/92 useless extension candidates. Maximal degree in co-relation 450. Up to 37 conditions per place. [2021-03-25 22:07:10,506 INFO L132 encePairwiseOnDemand]: 29/36 looper letters, 37 selfloop transitions, 16 changer transitions 1/57 dead transitions. [2021-03-25 22:07:10,506 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 57 transitions, 660 flow [2021-03-25 22:07:10,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 22:07:10,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 22:07:10,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 73 transitions. [2021-03-25 22:07:10,507 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.40555555555555556 [2021-03-25 22:07:10,507 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 73 transitions. [2021-03-25 22:07:10,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 73 transitions. [2021-03-25 22:07:10,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:07:10,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 73 transitions. [2021-03-25 22:07:10,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:10,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:10,508 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:10,508 INFO L185 Difference]: Start difference. First operand has 55 places, 46 transitions, 452 flow. Second operand 5 states and 73 transitions. [2021-03-25 22:07:10,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 57 transitions, 660 flow [2021-03-25 22:07:10,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 57 transitions, 642 flow, removed 3 selfloop flow, removed 1 redundant places. [2021-03-25 22:07:10,512 INFO L241 Difference]: Finished difference. Result has 60 places, 49 transitions, 525 flow [2021-03-25 22:07:10,513 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=525, PETRI_PLACES=60, PETRI_TRANSITIONS=49} [2021-03-25 22:07:10,513 INFO L343 CegarLoopForPetriNet]: 17 programPoint places, 43 predicate places. [2021-03-25 22:07:10,513 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 22:07:10,513 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 49 transitions, 525 flow [2021-03-25 22:07:10,513 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 49 transitions, 525 flow [2021-03-25 22:07:10,514 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 60 places, 49 transitions, 525 flow [2021-03-25 22:07:10,520 INFO L129 PetriNetUnfolder]: 28/79 cut-off events. [2021-03-25 22:07:10,520 INFO L130 PetriNetUnfolder]: For 344/344 co-relation queries the response was YES. [2021-03-25 22:07:10,521 INFO L84 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 79 events. 28/79 cut-off events. For 344/344 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 272 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 357. Up to 22 conditions per place. [2021-03-25 22:07:10,522 INFO L142 LiptonReduction]: Number of co-enabled transitions 50 [2021-03-25 22:07:10,525 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 22:07:10,525 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 22:07:10,525 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 12 [2021-03-25 22:07:10,526 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 49 transitions, 525 flow [2021-03-25 22:07:10,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:10,526 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:07:10,526 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:07:10,526 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-25 22:07:10,526 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 22:07:10,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:07:10,527 INFO L82 PathProgramCache]: Analyzing trace with hash -830176752, now seen corresponding path program 2 times [2021-03-25 22:07:10,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:07:10,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995207851] [2021-03-25 22:07:10,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:07:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:07:10,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:10,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:10,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:10,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:10,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:10,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:10,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995207851] [2021-03-25 22:07:10,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:07:10,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 22:07:10,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839164813] [2021-03-25 22:07:10,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 22:07:10,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:07:10,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 22:07:10,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 22:07:10,546 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2021-03-25 22:07:10,546 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 49 transitions, 525 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:10,546 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:07:10,546 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2021-03-25 22:07:10,546 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:07:10,595 INFO L129 PetriNetUnfolder]: 37/92 cut-off events. [2021-03-25 22:07:10,595 INFO L130 PetriNetUnfolder]: For 403/403 co-relation queries the response was YES. [2021-03-25 22:07:10,596 INFO L84 FinitePrefix]: Finished finitePrefix Result has 532 conditions, 92 events. 37/92 cut-off events. For 403/403 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 292 event pairs, 0 based on Foata normal form. 2/94 useless extension candidates. Maximal degree in co-relation 467. Up to 59 conditions per place. [2021-03-25 22:07:10,596 INFO L132 encePairwiseOnDemand]: 30/36 looper letters, 37 selfloop transitions, 17 changer transitions 1/58 dead transitions. [2021-03-25 22:07:10,597 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 58 transitions, 708 flow [2021-03-25 22:07:10,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 22:07:10,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 22:07:10,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2021-03-25 22:07:10,597 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.4 [2021-03-25 22:07:10,598 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 72 transitions. [2021-03-25 22:07:10,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 72 transitions. [2021-03-25 22:07:10,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:07:10,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 72 transitions. [2021-03-25 22:07:10,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:10,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:10,599 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:10,599 INFO L185 Difference]: Start difference. First operand has 60 places, 49 transitions, 525 flow. Second operand 5 states and 72 transitions. [2021-03-25 22:07:10,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 58 transitions, 708 flow [2021-03-25 22:07:10,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 58 transitions, 685 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-25 22:07:10,603 INFO L241 Difference]: Finished difference. Result has 64 places, 51 transitions, 571 flow [2021-03-25 22:07:10,603 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=571, PETRI_PLACES=64, PETRI_TRANSITIONS=51} [2021-03-25 22:07:10,603 INFO L343 CegarLoopForPetriNet]: 17 programPoint places, 47 predicate places. [2021-03-25 22:07:10,603 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 22:07:10,604 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 51 transitions, 571 flow [2021-03-25 22:07:10,604 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 51 transitions, 571 flow [2021-03-25 22:07:10,604 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 64 places, 51 transitions, 571 flow [2021-03-25 22:07:10,612 INFO L129 PetriNetUnfolder]: 30/82 cut-off events. [2021-03-25 22:07:10,612 INFO L130 PetriNetUnfolder]: For 378/378 co-relation queries the response was YES. [2021-03-25 22:07:10,612 INFO L84 FinitePrefix]: Finished finitePrefix Result has 429 conditions, 82 events. 30/82 cut-off events. For 378/378 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 274 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 381. Up to 24 conditions per place. [2021-03-25 22:07:10,613 INFO L142 LiptonReduction]: Number of co-enabled transitions 46 [2021-03-25 22:07:10,617 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 22:07:10,617 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 22:07:10,617 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 14 [2021-03-25 22:07:10,618 INFO L480 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 571 flow [2021-03-25 22:07:10,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:10,618 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:07:10,618 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:07:10,618 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-25 22:07:10,618 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 22:07:10,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:07:10,618 INFO L82 PathProgramCache]: Analyzing trace with hash 628223285, now seen corresponding path program 1 times [2021-03-25 22:07:10,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:07:10,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562726651] [2021-03-25 22:07:10,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:07:10,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:07:10,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:10,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:10,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:07:10,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:10,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:10,662 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 22:07:10,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:10,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:10,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562726651] [2021-03-25 22:07:10,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221681250] [2021-03-25 22:07:10,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 22:07:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:07:10,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 14 conjunts are in the unsatisfiable core [2021-03-25 22:07:10,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 22:07:10,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:10,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:10,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:10,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:10,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:10,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:10,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:10,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:10,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:10,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:10,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:10,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:10,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:10,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:10,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:10,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:10,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:10,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:10,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 22:07:10,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:10,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:07:10,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 22:07:10,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:07:10,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:07:10,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:10,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:07:10,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 22:07:10,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:10,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:07:10,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 22:07:10,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:10,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:10,856 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.7 percent of original size [2021-03-25 22:07:10,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:07:10,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:10,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:10,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:07:10,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:10,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:10,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:10,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:10,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:10,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:10,899 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-25 22:07:10,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:07:10,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:10,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:07:10,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:07:10,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:10,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:10,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:10,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:10,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:10,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:10,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:10,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:10,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 22:07:10,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-03-25 22:07:10,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657736456] [2021-03-25 22:07:10,916 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-25 22:07:10,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:07:10,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-25 22:07:10,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-03-25 22:07:10,916 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2021-03-25 22:07:10,917 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 571 flow. Second operand has 12 states, 12 states have (on average 9.166666666666666) internal successors, (110), 12 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) [2021-03-25 22:07:10,917 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:07:10,917 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2021-03-25 22:07:10,917 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:07:11,076 INFO L129 PetriNetUnfolder]: 46/109 cut-off events. [2021-03-25 22:07:11,076 INFO L130 PetriNetUnfolder]: For 430/430 co-relation queries the response was YES. [2021-03-25 22:07:11,077 INFO L84 FinitePrefix]: Finished finitePrefix Result has 637 conditions, 109 events. 46/109 cut-off events. For 430/430 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 365 event pairs, 0 based on Foata normal form. 1/110 useless extension candidates. Maximal degree in co-relation 567. Up to 41 conditions per place. [2021-03-25 22:07:11,078 INFO L132 encePairwiseOnDemand]: 26/36 looper letters, 35 selfloop transitions, 29 changer transitions 7/73 dead transitions. [2021-03-25 22:07:11,078 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 73 transitions, 865 flow [2021-03-25 22:07:11,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 22:07:11,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 22:07:11,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2021-03-25 22:07:11,079 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.345679012345679 [2021-03-25 22:07:11,079 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 112 transitions. [2021-03-25 22:07:11,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 112 transitions. [2021-03-25 22:07:11,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:07:11,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 112 transitions. [2021-03-25 22:07:11,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:11,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 36.0) internal successors, (360), 10 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:11,081 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 36.0) internal successors, (360), 10 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:11,081 INFO L185 Difference]: Start difference. First operand has 64 places, 51 transitions, 571 flow. Second operand 9 states and 112 transitions. [2021-03-25 22:07:11,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 73 transitions, 865 flow [2021-03-25 22:07:11,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 73 transitions, 835 flow, removed 3 selfloop flow, removed 3 redundant places. [2021-03-25 22:07:11,088 INFO L241 Difference]: Finished difference. Result has 73 places, 58 transitions, 678 flow [2021-03-25 22:07:11,088 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=678, PETRI_PLACES=73, PETRI_TRANSITIONS=58} [2021-03-25 22:07:11,088 INFO L343 CegarLoopForPetriNet]: 17 programPoint places, 56 predicate places. [2021-03-25 22:07:11,089 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 22:07:11,089 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 58 transitions, 678 flow [2021-03-25 22:07:11,089 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 58 transitions, 678 flow [2021-03-25 22:07:11,089 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 58 transitions, 678 flow [2021-03-25 22:07:11,097 INFO L129 PetriNetUnfolder]: 33/84 cut-off events. [2021-03-25 22:07:11,098 INFO L130 PetriNetUnfolder]: For 377/377 co-relation queries the response was YES. [2021-03-25 22:07:11,098 INFO L84 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 84 events. 33/84 cut-off events. For 377/377 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 279 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 458. Up to 26 conditions per place. [2021-03-25 22:07:11,099 INFO L142 LiptonReduction]: Number of co-enabled transitions 46 [2021-03-25 22:07:11,153 INFO L154 LiptonReduction]: Checked pairs total: 2 [2021-03-25 22:07:11,153 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 22:07:11,153 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 64 [2021-03-25 22:07:11,153 INFO L480 AbstractCegarLoop]: Abstraction has has 72 places, 58 transitions, 694 flow [2021-03-25 22:07:11,154 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 9.166666666666666) internal successors, (110), 12 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) [2021-03-25 22:07:11,154 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:07:11,154 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:07:11,370 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-03-25 22:07:11,370 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 22:07:11,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:07:11,371 INFO L82 PathProgramCache]: Analyzing trace with hash -664949139, now seen corresponding path program 2 times [2021-03-25 22:07:11,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:07:11,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226728841] [2021-03-25 22:07:11,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:07:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:07:11,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:11,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:11,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:11,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:11,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:11,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:11,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226728841] [2021-03-25 22:07:11,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:07:11,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 22:07:11,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193499638] [2021-03-25 22:07:11,390 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 22:07:11,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:07:11,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 22:07:11,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 22:07:11,391 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2021-03-25 22:07:11,391 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 58 transitions, 694 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:11,391 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:07:11,391 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2021-03-25 22:07:11,392 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:07:11,476 INFO L129 PetriNetUnfolder]: 42/104 cut-off events. [2021-03-25 22:07:11,476 INFO L130 PetriNetUnfolder]: For 478/478 co-relation queries the response was YES. [2021-03-25 22:07:11,477 INFO L84 FinitePrefix]: Finished finitePrefix Result has 667 conditions, 104 events. 42/104 cut-off events. For 478/478 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 346 event pairs, 2 based on Foata normal form. 1/105 useless extension candidates. Maximal degree in co-relation 630. Up to 41 conditions per place. [2021-03-25 22:07:11,477 INFO L132 encePairwiseOnDemand]: 29/38 looper letters, 34 selfloop transitions, 28 changer transitions 1/66 dead transitions. [2021-03-25 22:07:11,478 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 66 transitions, 884 flow [2021-03-25 22:07:11,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 22:07:11,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 22:07:11,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2021-03-25 22:07:11,478 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3684210526315789 [2021-03-25 22:07:11,479 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 112 transitions. [2021-03-25 22:07:11,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 112 transitions. [2021-03-25 22:07:11,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:07:11,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 112 transitions. [2021-03-25 22:07:11,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:11,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 38.0) internal successors, (342), 9 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:11,480 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 38.0) internal successors, (342), 9 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:11,480 INFO L185 Difference]: Start difference. First operand has 72 places, 58 transitions, 694 flow. Second operand 8 states and 112 transitions. [2021-03-25 22:07:11,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 66 transitions, 884 flow [2021-03-25 22:07:11,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 66 transitions, 846 flow, removed 12 selfloop flow, removed 2 redundant places. [2021-03-25 22:07:11,485 INFO L241 Difference]: Finished difference. Result has 78 places, 58 transitions, 719 flow [2021-03-25 22:07:11,485 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=719, PETRI_PLACES=78, PETRI_TRANSITIONS=58} [2021-03-25 22:07:11,485 INFO L343 CegarLoopForPetriNet]: 17 programPoint places, 61 predicate places. [2021-03-25 22:07:11,485 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 22:07:11,486 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 58 transitions, 719 flow [2021-03-25 22:07:11,486 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 58 transitions, 719 flow [2021-03-25 22:07:11,486 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 77 places, 58 transitions, 719 flow [2021-03-25 22:07:11,494 INFO L129 PetriNetUnfolder]: 34/88 cut-off events. [2021-03-25 22:07:11,494 INFO L130 PetriNetUnfolder]: For 489/489 co-relation queries the response was YES. [2021-03-25 22:07:11,494 INFO L84 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 88 events. 34/88 cut-off events. For 489/489 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 284 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 477. Up to 30 conditions per place. [2021-03-25 22:07:11,495 INFO L142 LiptonReduction]: Number of co-enabled transitions 34 [2021-03-25 22:07:11,500 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 22:07:11,500 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 22:07:11,500 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 15 [2021-03-25 22:07:11,500 INFO L480 AbstractCegarLoop]: Abstraction has has 77 places, 58 transitions, 719 flow [2021-03-25 22:07:11,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:11,500 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:07:11,500 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:07:11,500 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-25 22:07:11,500 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 22:07:11,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:07:11,501 INFO L82 PathProgramCache]: Analyzing trace with hash -821865063, now seen corresponding path program 1 times [2021-03-25 22:07:11,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:07:11,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619752338] [2021-03-25 22:07:11,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:07:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:07:11,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:11,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:11,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:11,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:11,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:11,548 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 22:07:11,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:11,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:11,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619752338] [2021-03-25 22:07:11,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551824370] [2021-03-25 22:07:11,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-03-25 22:07:11,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:07:11,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 14 conjunts are in the unsatisfiable core [2021-03-25 22:07:11,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 22:07:11,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:11,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:11,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:11,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:11,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:11,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:11,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:11,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:11,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:11,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:11,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 22:07:11,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:11,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:11,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:11,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:11,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:11,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:11,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:11,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:11,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:11,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 22:07:11,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:11,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:11,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:11,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:07:11,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 22:07:11,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:11,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:07:11,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 22:07:11,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:11,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:11,656 INFO L142 QuantifierPusher]: treesize reduction 1, result has 96.4 percent of original size [2021-03-25 22:07:11,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:11,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:11,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 22:07:11,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:11,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:07:11,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 22:07:11,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:11,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:11,680 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-25 22:07:11,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:07:11,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:11,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:07:11,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:07:11,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:11,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:11,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:11,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:11,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:11,703 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:11,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:11,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:11,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:11,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:11,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:11,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:11,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 22:07:11,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-03-25 22:07:11,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245743487] [2021-03-25 22:07:11,707 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-25 22:07:11,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:07:11,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-25 22:07:11,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-03-25 22:07:11,708 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2021-03-25 22:07:11,708 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 58 transitions, 719 flow. Second operand has 12 states, 12 states have (on average 9.166666666666666) internal successors, (110), 12 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) [2021-03-25 22:07:11,708 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:07:11,708 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2021-03-25 22:07:11,708 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:07:11,804 INFO L129 PetriNetUnfolder]: 42/110 cut-off events. [2021-03-25 22:07:11,804 INFO L130 PetriNetUnfolder]: For 570/570 co-relation queries the response was YES. [2021-03-25 22:07:11,805 INFO L84 FinitePrefix]: Finished finitePrefix Result has 697 conditions, 110 events. 42/110 cut-off events. For 570/570 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 387 event pairs, 0 based on Foata normal form. 2/112 useless extension candidates. Maximal degree in co-relation 649. Up to 47 conditions per place. [2021-03-25 22:07:11,806 INFO L132 encePairwiseOnDemand]: 27/38 looper letters, 36 selfloop transitions, 19 changer transitions 9/66 dead transitions. [2021-03-25 22:07:11,806 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 66 transitions, 901 flow [2021-03-25 22:07:11,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 22:07:11,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 22:07:11,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2021-03-25 22:07:11,807 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3157894736842105 [2021-03-25 22:07:11,807 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 96 transitions. [2021-03-25 22:07:11,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 96 transitions. [2021-03-25 22:07:11,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:07:11,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 96 transitions. [2021-03-25 22:07:11,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:11,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 38.0) internal successors, (342), 9 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:11,808 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 38.0) internal successors, (342), 9 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:11,808 INFO L185 Difference]: Start difference. First operand has 77 places, 58 transitions, 719 flow. Second operand 8 states and 96 transitions. [2021-03-25 22:07:11,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 66 transitions, 901 flow [2021-03-25 22:07:11,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 66 transitions, 843 flow, removed 8 selfloop flow, removed 4 redundant places. [2021-03-25 22:07:11,814 INFO L241 Difference]: Finished difference. Result has 82 places, 53 transitions, 605 flow [2021-03-25 22:07:11,814 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=605, PETRI_PLACES=82, PETRI_TRANSITIONS=53} [2021-03-25 22:07:11,814 INFO L343 CegarLoopForPetriNet]: 17 programPoint places, 65 predicate places. [2021-03-25 22:07:11,814 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 22:07:11,814 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 53 transitions, 605 flow [2021-03-25 22:07:11,814 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 53 transitions, 605 flow [2021-03-25 22:07:11,815 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 77 places, 53 transitions, 605 flow [2021-03-25 22:07:11,822 INFO L129 PetriNetUnfolder]: 30/84 cut-off events. [2021-03-25 22:07:11,822 INFO L130 PetriNetUnfolder]: For 446/448 co-relation queries the response was YES. [2021-03-25 22:07:11,822 INFO L84 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 84 events. 30/84 cut-off events. For 446/448 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 280 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 416. Up to 26 conditions per place. [2021-03-25 22:07:11,823 INFO L142 LiptonReduction]: Number of co-enabled transitions 34 [2021-03-25 22:07:11,870 INFO L154 LiptonReduction]: Checked pairs total: 1 [2021-03-25 22:07:11,870 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 22:07:11,870 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 56 [2021-03-25 22:07:11,871 INFO L480 AbstractCegarLoop]: Abstraction has has 77 places, 53 transitions, 618 flow [2021-03-25 22:07:11,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 9.166666666666666) internal successors, (110), 12 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) [2021-03-25 22:07:11,871 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:07:11,871 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:07:12,089 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-03-25 22:07:12,089 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 22:07:12,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:07:12,089 INFO L82 PathProgramCache]: Analyzing trace with hash 766059515, now seen corresponding path program 2 times [2021-03-25 22:07:12,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:07:12,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428802283] [2021-03-25 22:07:12,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:07:12,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:07:12,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:12,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:07:12,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:12,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:12,132 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 22:07:12,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:12,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428802283] [2021-03-25 22:07:12,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568734033] [2021-03-25 22:07:12,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 22:07:12,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-25 22:07:12,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-25 22:07:12,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 14 conjunts are in the unsatisfiable core [2021-03-25 22:07:12,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 22:07:12,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:12,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:12,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:12,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:12,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:12,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:12,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:12,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:12,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:12,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:12,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 22:07:12,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:12,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:07:12,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 22:07:12,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:07:12,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:07:12,237 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.5 percent of original size [2021-03-25 22:07:12,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 22:07:12,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:12,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 22:07:12,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:07:12,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:07:12,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:07:12,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:12,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:07:12,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:07:12,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:12,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:07:12,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 22:07:12,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:12,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:12,267 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-25 22:07:12,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:07:12,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:12,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:07:12,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:07:12,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:12,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 22:07:12,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-03-25 22:07:12,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424146480] [2021-03-25 22:07:12,290 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 22:07:12,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:07:12,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 22:07:12,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-03-25 22:07:12,291 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2021-03-25 22:07:12,291 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 53 transitions, 618 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2021-03-25 22:07:12,291 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:07:12,291 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2021-03-25 22:07:12,291 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:07:12,387 INFO L129 PetriNetUnfolder]: 44/109 cut-off events. [2021-03-25 22:07:12,387 INFO L130 PetriNetUnfolder]: For 585/585 co-relation queries the response was YES. [2021-03-25 22:07:12,388 INFO L84 FinitePrefix]: Finished finitePrefix Result has 674 conditions, 109 events. 44/109 cut-off events. For 585/585 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 362 event pairs, 0 based on Foata normal form. 1/110 useless extension candidates. Maximal degree in co-relation 633. Up to 41 conditions per place. [2021-03-25 22:07:12,388 INFO L132 encePairwiseOnDemand]: 29/40 looper letters, 32 selfloop transitions, 28 changer transitions 6/68 dead transitions. [2021-03-25 22:07:12,388 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 68 transitions, 874 flow [2021-03-25 22:07:12,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 22:07:12,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 22:07:12,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2021-03-25 22:07:12,389 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.303125 [2021-03-25 22:07:12,389 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 97 transitions. [2021-03-25 22:07:12,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 97 transitions. [2021-03-25 22:07:12,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:07:12,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 97 transitions. [2021-03-25 22:07:12,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:12,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 40.0) internal successors, (360), 9 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:12,391 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 40.0) internal successors, (360), 9 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:12,391 INFO L185 Difference]: Start difference. First operand has 77 places, 53 transitions, 618 flow. Second operand 8 states and 97 transitions. [2021-03-25 22:07:12,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 68 transitions, 874 flow [2021-03-25 22:07:12,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 68 transitions, 769 flow, removed 18 selfloop flow, removed 11 redundant places. [2021-03-25 22:07:12,398 INFO L241 Difference]: Finished difference. Result has 77 places, 57 transitions, 650 flow [2021-03-25 22:07:12,398 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=650, PETRI_PLACES=77, PETRI_TRANSITIONS=57} [2021-03-25 22:07:12,398 INFO L343 CegarLoopForPetriNet]: 17 programPoint places, 60 predicate places. [2021-03-25 22:07:12,398 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 22:07:12,398 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 57 transitions, 650 flow [2021-03-25 22:07:12,399 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 57 transitions, 650 flow [2021-03-25 22:07:12,399 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 75 places, 57 transitions, 650 flow [2021-03-25 22:07:12,406 INFO L129 PetriNetUnfolder]: 32/87 cut-off events. [2021-03-25 22:07:12,406 INFO L130 PetriNetUnfolder]: For 539/541 co-relation queries the response was YES. [2021-03-25 22:07:12,407 INFO L84 FinitePrefix]: Finished finitePrefix Result has 475 conditions, 87 events. 32/87 cut-off events. For 539/541 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 299 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 440. Up to 29 conditions per place. [2021-03-25 22:07:12,407 INFO L142 LiptonReduction]: Number of co-enabled transitions 36 [2021-03-25 22:07:12,412 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 22:07:12,412 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 22:07:12,412 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 14 [2021-03-25 22:07:12,413 INFO L480 AbstractCegarLoop]: Abstraction has has 75 places, 57 transitions, 650 flow [2021-03-25 22:07:12,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2021-03-25 22:07:12,413 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:07:12,413 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:07:12,634 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 22:07:12,634 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 22:07:12,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:07:12,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1395547724, now seen corresponding path program 1 times [2021-03-25 22:07:12,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:07:12,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406427807] [2021-03-25 22:07:12,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:07:12,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:07:12,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:12,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:12,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:12,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:12,683 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 22:07:12,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:12,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406427807] [2021-03-25 22:07:12,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939272643] [2021-03-25 22:07:12,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 22:07:12,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:07:12,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 13 conjunts are in the unsatisfiable core [2021-03-25 22:07:12,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 22:07:12,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:12,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:12,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:12,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:12,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:12,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:12,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:07:12,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:12,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:12,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:07:12,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:12,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:12,743 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-25 22:07:12,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:12,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:12,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:12,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:07:12,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:12,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:12,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:07:12,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:12,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:12,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:07:12,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:12,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:12,779 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-25 22:07:12,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:07:12,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:12,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:07:12,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:07:12,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:12,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:12,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:12,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-03-25 22:07:12,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2021-03-25 22:07:12,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395493126] [2021-03-25 22:07:12,792 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 22:07:12,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:07:12,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 22:07:12,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-03-25 22:07:12,793 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2021-03-25 22:07:12,793 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 57 transitions, 650 flow. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:12,793 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:07:12,793 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2021-03-25 22:07:12,793 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:07:12,836 INFO L129 PetriNetUnfolder]: 40/103 cut-off events. [2021-03-25 22:07:12,837 INFO L130 PetriNetUnfolder]: For 586/586 co-relation queries the response was YES. [2021-03-25 22:07:12,837 INFO L84 FinitePrefix]: Finished finitePrefix Result has 633 conditions, 103 events. 40/103 cut-off events. For 586/586 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 347 event pairs, 1 based on Foata normal form. 1/104 useless extension candidates. Maximal degree in co-relation 593. Up to 39 conditions per place. [2021-03-25 22:07:12,838 INFO L132 encePairwiseOnDemand]: 32/40 looper letters, 34 selfloop transitions, 18 changer transitions 11/65 dead transitions. [2021-03-25 22:07:12,838 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 65 transitions, 828 flow [2021-03-25 22:07:12,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 22:07:12,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 22:07:12,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2021-03-25 22:07:12,839 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3142857142857143 [2021-03-25 22:07:12,839 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 88 transitions. [2021-03-25 22:07:12,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 88 transitions. [2021-03-25 22:07:12,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:07:12,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 88 transitions. [2021-03-25 22:07:12,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:12,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:12,840 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:12,840 INFO L185 Difference]: Start difference. First operand has 75 places, 57 transitions, 650 flow. Second operand 7 states and 88 transitions. [2021-03-25 22:07:12,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 65 transitions, 828 flow [2021-03-25 22:07:12,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 65 transitions, 790 flow, removed 10 selfloop flow, removed 4 redundant places. [2021-03-25 22:07:12,846 INFO L241 Difference]: Finished difference. Result has 79 places, 51 transitions, 582 flow [2021-03-25 22:07:12,846 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=582, PETRI_PLACES=79, PETRI_TRANSITIONS=51} [2021-03-25 22:07:12,846 INFO L343 CegarLoopForPetriNet]: 17 programPoint places, 62 predicate places. [2021-03-25 22:07:12,847 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 22:07:12,847 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 51 transitions, 582 flow [2021-03-25 22:07:12,847 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 51 transitions, 582 flow [2021-03-25 22:07:12,847 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 75 places, 51 transitions, 582 flow [2021-03-25 22:07:12,860 INFO L129 PetriNetUnfolder]: 28/81 cut-off events. [2021-03-25 22:07:12,861 INFO L130 PetriNetUnfolder]: For 499/501 co-relation queries the response was YES. [2021-03-25 22:07:12,861 INFO L84 FinitePrefix]: Finished finitePrefix Result has 433 conditions, 81 events. 28/81 cut-off events. For 499/501 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 257 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 398. Up to 27 conditions per place. [2021-03-25 22:07:12,862 INFO L142 LiptonReduction]: Number of co-enabled transitions 30 [2021-03-25 22:07:12,865 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 22:07:12,865 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 22:07:12,865 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 18 [2021-03-25 22:07:12,866 INFO L480 AbstractCegarLoop]: Abstraction has has 75 places, 51 transitions, 582 flow [2021-03-25 22:07:12,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:12,866 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:07:12,866 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:07:13,087 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 22:07:13,090 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 22:07:13,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:07:13,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1660263823, now seen corresponding path program 1 times [2021-03-25 22:07:13,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:07:13,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849341340] [2021-03-25 22:07:13,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:07:13,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:07:13,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:13,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:13,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:13,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:13,137 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 22:07:13,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:13,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849341340] [2021-03-25 22:07:13,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308724525] [2021-03-25 22:07:13,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 22:07:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:07:13,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 13 conjunts are in the unsatisfiable core [2021-03-25 22:07:13,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 22:07:13,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:13,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:13,173 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:13,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:13,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,179 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,183 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:13,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:13,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:07:13,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:13,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:13,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:07:13,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:13,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:13,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:13,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:13,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 22:07:13,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:13,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:13,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 22:07:13,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:13,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:13,228 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.7 percent of original size [2021-03-25 22:07:13,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:07:13,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:13,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:13,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:07:13,232 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:13,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:13,246 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-25 22:07:13,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:07:13,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:13,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:07:13,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:07:13,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:13,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-03-25 22:07:13,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2021-03-25 22:07:13,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051358034] [2021-03-25 22:07:13,273 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 22:07:13,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:07:13,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 22:07:13,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-03-25 22:07:13,274 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2021-03-25 22:07:13,274 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 51 transitions, 582 flow. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:13,274 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:07:13,274 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2021-03-25 22:07:13,274 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:07:13,334 INFO L129 PetriNetUnfolder]: 40/103 cut-off events. [2021-03-25 22:07:13,335 INFO L130 PetriNetUnfolder]: For 597/597 co-relation queries the response was YES. [2021-03-25 22:07:13,335 INFO L84 FinitePrefix]: Finished finitePrefix Result has 633 conditions, 103 events. 40/103 cut-off events. For 597/597 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 342 event pairs, 1 based on Foata normal form. 1/104 useless extension candidates. Maximal degree in co-relation 593. Up to 41 conditions per place. [2021-03-25 22:07:13,336 INFO L132 encePairwiseOnDemand]: 32/40 looper letters, 33 selfloop transitions, 24 changer transitions 4/63 dead transitions. [2021-03-25 22:07:13,336 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 63 transitions, 815 flow [2021-03-25 22:07:13,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 22:07:13,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 22:07:13,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2021-03-25 22:07:13,337 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3142857142857143 [2021-03-25 22:07:13,337 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 88 transitions. [2021-03-25 22:07:13,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 88 transitions. [2021-03-25 22:07:13,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:07:13,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 88 transitions. [2021-03-25 22:07:13,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:13,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:13,344 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:13,344 INFO L185 Difference]: Start difference. First operand has 75 places, 51 transitions, 582 flow. Second operand 7 states and 88 transitions. [2021-03-25 22:07:13,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 63 transitions, 815 flow [2021-03-25 22:07:13,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 63 transitions, 738 flow, removed 8 selfloop flow, removed 7 redundant places. [2021-03-25 22:07:13,350 INFO L241 Difference]: Finished difference. Result has 77 places, 53 transitions, 607 flow [2021-03-25 22:07:13,350 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=607, PETRI_PLACES=77, PETRI_TRANSITIONS=53} [2021-03-25 22:07:13,351 INFO L343 CegarLoopForPetriNet]: 17 programPoint places, 60 predicate places. [2021-03-25 22:07:13,351 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 22:07:13,351 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 53 transitions, 607 flow [2021-03-25 22:07:13,351 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 53 transitions, 607 flow [2021-03-25 22:07:13,352 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 76 places, 53 transitions, 607 flow [2021-03-25 22:07:13,358 INFO L129 PetriNetUnfolder]: 31/86 cut-off events. [2021-03-25 22:07:13,358 INFO L130 PetriNetUnfolder]: For 493/495 co-relation queries the response was YES. [2021-03-25 22:07:13,358 INFO L84 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 86 events. 31/86 cut-off events. For 493/495 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 282 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 444. Up to 32 conditions per place. [2021-03-25 22:07:13,359 INFO L142 LiptonReduction]: Number of co-enabled transitions 28 [2021-03-25 22:07:13,363 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 22:07:13,363 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 22:07:13,363 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 12 [2021-03-25 22:07:13,363 INFO L480 AbstractCegarLoop]: Abstraction has has 76 places, 53 transitions, 607 flow [2021-03-25 22:07:13,363 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:13,363 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:07:13,363 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:07:13,579 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-03-25 22:07:13,580 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 22:07:13,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:07:13,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1659370093, now seen corresponding path program 2 times [2021-03-25 22:07:13,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:07:13,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052039704] [2021-03-25 22:07:13,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:07:13,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:07:13,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:13,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:13,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:13,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:13,633 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 22:07:13,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:13,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052039704] [2021-03-25 22:07:13,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643594375] [2021-03-25 22:07:13,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-03-25 22:07:13,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-25 22:07:13,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-25 22:07:13,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 13 conjunts are in the unsatisfiable core [2021-03-25 22:07:13,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 22:07:13,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:13,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:13,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:13,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:13,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 22:07:13,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:13,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:13,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:07:13,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:13,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:13,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:07:13,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,694 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:13,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:13,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:13,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:13,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 22:07:13,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:13,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:13,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 22:07:13,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:13,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:13,725 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.7 percent of original size [2021-03-25 22:07:13,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:07:13,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:13,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:13,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:07:13,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:13,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:13,741 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-25 22:07:13,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:07:13,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:13,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:07:13,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:07:13,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:13,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:13,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:13,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 22:07:13,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2021-03-25 22:07:13,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902703389] [2021-03-25 22:07:13,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 22:07:13,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:07:13,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 22:07:13,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-03-25 22:07:13,764 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2021-03-25 22:07:13,764 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 53 transitions, 607 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2021-03-25 22:07:13,764 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:07:13,764 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2021-03-25 22:07:13,764 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:07:13,876 INFO L129 PetriNetUnfolder]: 37/102 cut-off events. [2021-03-25 22:07:13,876 INFO L130 PetriNetUnfolder]: For 535/535 co-relation queries the response was YES. [2021-03-25 22:07:13,878 INFO L84 FinitePrefix]: Finished finitePrefix Result has 629 conditions, 102 events. 37/102 cut-off events. For 535/535 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 341 event pairs, 0 based on Foata normal form. 2/104 useless extension candidates. Maximal degree in co-relation 590. Up to 37 conditions per place. [2021-03-25 22:07:13,878 INFO L132 encePairwiseOnDemand]: 31/40 looper letters, 25 selfloop transitions, 17 changer transitions 19/63 dead transitions. [2021-03-25 22:07:13,879 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 63 transitions, 794 flow [2021-03-25 22:07:13,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 22:07:13,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 22:07:13,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2021-03-25 22:07:13,880 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.309375 [2021-03-25 22:07:13,880 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 99 transitions. [2021-03-25 22:07:13,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 99 transitions. [2021-03-25 22:07:13,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:07:13,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 99 transitions. [2021-03-25 22:07:13,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:13,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 40.0) internal successors, (360), 9 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:13,887 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 40.0) internal successors, (360), 9 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:13,887 INFO L185 Difference]: Start difference. First operand has 76 places, 53 transitions, 607 flow. Second operand 8 states and 99 transitions. [2021-03-25 22:07:13,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 63 transitions, 794 flow [2021-03-25 22:07:13,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 63 transitions, 737 flow, removed 8 selfloop flow, removed 5 redundant places. [2021-03-25 22:07:13,895 INFO L241 Difference]: Finished difference. Result has 79 places, 41 transitions, 446 flow [2021-03-25 22:07:13,895 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=446, PETRI_PLACES=79, PETRI_TRANSITIONS=41} [2021-03-25 22:07:13,895 INFO L343 CegarLoopForPetriNet]: 17 programPoint places, 62 predicate places. [2021-03-25 22:07:13,895 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 22:07:13,895 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 41 transitions, 446 flow [2021-03-25 22:07:13,896 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 41 transitions, 446 flow [2021-03-25 22:07:13,896 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 73 places, 41 transitions, 446 flow [2021-03-25 22:07:13,901 INFO L129 PetriNetUnfolder]: 18/65 cut-off events. [2021-03-25 22:07:13,901 INFO L130 PetriNetUnfolder]: For 379/381 co-relation queries the response was YES. [2021-03-25 22:07:13,901 INFO L84 FinitePrefix]: Finished finitePrefix Result has 338 conditions, 65 events. 18/65 cut-off events. For 379/381 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 191 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 304. Up to 22 conditions per place. [2021-03-25 22:07:13,902 INFO L142 LiptonReduction]: Number of co-enabled transitions 18 [2021-03-25 22:07:13,907 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 22:07:13,907 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 22:07:13,907 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 12 [2021-03-25 22:07:13,908 INFO L480 AbstractCegarLoop]: Abstraction has has 73 places, 41 transitions, 446 flow [2021-03-25 22:07:13,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2021-03-25 22:07:13,908 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:07:13,908 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:07:14,121 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 22:07:14,122 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 22:07:14,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:07:14,122 INFO L82 PathProgramCache]: Analyzing trace with hash 627531365, now seen corresponding path program 3 times [2021-03-25 22:07:14,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:07:14,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90172621] [2021-03-25 22:07:14,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:07:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:07:14,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,132 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:14,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:14,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 22:07:14,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:14,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:14,159 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 22:07:14,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:14,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:14,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90172621] [2021-03-25 22:07:14,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866598949] [2021-03-25 22:07:14,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 22:07:14,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-03-25 22:07:14,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-25 22:07:14,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 14 conjunts are in the unsatisfiable core [2021-03-25 22:07:14,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 22:07:14,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:14,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:14,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:14,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:14,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:14,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:14,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:14,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:14,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:14,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:14,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:14,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:14,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:14,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:14,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:14,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:14,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:14,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:14,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 22:07:14,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:14,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:07:14,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 22:07:14,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:07:14,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:07:14,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:14,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:07:14,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 22:07:14,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:14,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:07:14,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 22:07:14,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:14,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:14,240 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.7 percent of original size [2021-03-25 22:07:14,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:07:14,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:14,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:14,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:07:14,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:14,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:14,258 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-25 22:07:14,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:07:14,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:14,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:07:14,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:07:14,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:14,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:14,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:14,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:14,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:14,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:14,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:14,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:14,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:14,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:14,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:14,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 22:07:14,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-03-25 22:07:14,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400653758] [2021-03-25 22:07:14,274 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-25 22:07:14,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:07:14,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-25 22:07:14,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-03-25 22:07:14,275 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2021-03-25 22:07:14,275 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 41 transitions, 446 flow. Second operand has 12 states, 12 states have (on average 9.166666666666666) internal successors, (110), 12 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) [2021-03-25 22:07:14,275 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:07:14,275 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2021-03-25 22:07:14,275 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:07:14,346 INFO L129 PetriNetUnfolder]: 23/75 cut-off events. [2021-03-25 22:07:14,346 INFO L130 PetriNetUnfolder]: For 400/400 co-relation queries the response was YES. [2021-03-25 22:07:14,347 INFO L84 FinitePrefix]: Finished finitePrefix Result has 453 conditions, 75 events. 23/75 cut-off events. For 400/400 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 230 event pairs, 0 based on Foata normal form. 1/76 useless extension candidates. Maximal degree in co-relation 414. Up to 34 conditions per place. [2021-03-25 22:07:14,347 INFO L132 encePairwiseOnDemand]: 32/40 looper letters, 26 selfloop transitions, 13 changer transitions 5/46 dead transitions. [2021-03-25 22:07:14,347 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 46 transitions, 566 flow [2021-03-25 22:07:14,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 22:07:14,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 22:07:14,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2021-03-25 22:07:14,349 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.28125 [2021-03-25 22:07:14,349 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 90 transitions. [2021-03-25 22:07:14,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 90 transitions. [2021-03-25 22:07:14,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:07:14,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 90 transitions. [2021-03-25 22:07:14,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:14,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 40.0) internal successors, (360), 9 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:14,350 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 40.0) internal successors, (360), 9 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:14,350 INFO L185 Difference]: Start difference. First operand has 73 places, 41 transitions, 446 flow. Second operand 8 states and 90 transitions. [2021-03-25 22:07:14,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 46 transitions, 566 flow [2021-03-25 22:07:14,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 46 transitions, 491 flow, removed 7 selfloop flow, removed 14 redundant places. [2021-03-25 22:07:14,354 INFO L241 Difference]: Finished difference. Result has 67 places, 38 transitions, 373 flow [2021-03-25 22:07:14,354 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=373, PETRI_PLACES=67, PETRI_TRANSITIONS=38} [2021-03-25 22:07:14,355 INFO L343 CegarLoopForPetriNet]: 17 programPoint places, 50 predicate places. [2021-03-25 22:07:14,355 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 22:07:14,355 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 38 transitions, 373 flow [2021-03-25 22:07:14,355 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 38 transitions, 373 flow [2021-03-25 22:07:14,355 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 62 places, 38 transitions, 373 flow [2021-03-25 22:07:14,360 INFO L129 PetriNetUnfolder]: 16/61 cut-off events. [2021-03-25 22:07:14,360 INFO L130 PetriNetUnfolder]: For 295/297 co-relation queries the response was YES. [2021-03-25 22:07:14,361 INFO L84 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 61 events. 16/61 cut-off events. For 295/297 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 176 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 256. Up to 20 conditions per place. [2021-03-25 22:07:14,361 INFO L142 LiptonReduction]: Number of co-enabled transitions 18 [2021-03-25 22:07:14,366 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 22:07:14,366 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 22:07:14,366 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11 [2021-03-25 22:07:14,366 INFO L480 AbstractCegarLoop]: Abstraction has has 62 places, 38 transitions, 373 flow [2021-03-25 22:07:14,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 9.166666666666666) internal successors, (110), 12 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) [2021-03-25 22:07:14,366 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:07:14,367 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:07:14,587 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 22:07:14,588 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 22:07:14,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:07:14,588 INFO L82 PathProgramCache]: Analyzing trace with hash 93477059, now seen corresponding path program 3 times [2021-03-25 22:07:14,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:07:14,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053942484] [2021-03-25 22:07:14,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:07:14,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:07:14,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:14,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:14,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:14,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:14,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:14,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:14,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053942484] [2021-03-25 22:07:14,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:07:14,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 22:07:14,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611149896] [2021-03-25 22:07:14,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 22:07:14,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:07:14,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 22:07:14,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 22:07:14,613 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2021-03-25 22:07:14,613 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 38 transitions, 373 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:14,613 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:07:14,613 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2021-03-25 22:07:14,613 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:07:14,654 INFO L129 PetriNetUnfolder]: 22/66 cut-off events. [2021-03-25 22:07:14,654 INFO L130 PetriNetUnfolder]: For 413/413 co-relation queries the response was YES. [2021-03-25 22:07:14,655 INFO L84 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 66 events. 22/66 cut-off events. For 413/413 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 171 event pairs, 4 based on Foata normal form. 2/68 useless extension candidates. Maximal degree in co-relation 347. Up to 27 conditions per place. [2021-03-25 22:07:14,655 INFO L132 encePairwiseOnDemand]: 34/40 looper letters, 22 selfloop transitions, 14 changer transitions 4/43 dead transitions. [2021-03-25 22:07:14,655 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 43 transitions, 509 flow [2021-03-25 22:07:14,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 22:07:14,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 22:07:14,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 70 transitions. [2021-03-25 22:07:14,656 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.35 [2021-03-25 22:07:14,656 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 70 transitions. [2021-03-25 22:07:14,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 70 transitions. [2021-03-25 22:07:14,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:07:14,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 70 transitions. [2021-03-25 22:07:14,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:14,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:14,657 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:14,657 INFO L185 Difference]: Start difference. First operand has 62 places, 38 transitions, 373 flow. Second operand 5 states and 70 transitions. [2021-03-25 22:07:14,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 43 transitions, 509 flow [2021-03-25 22:07:14,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 43 transitions, 430 flow, removed 6 selfloop flow, removed 11 redundant places. [2021-03-25 22:07:14,661 INFO L241 Difference]: Finished difference. Result has 56 places, 37 transitions, 330 flow [2021-03-25 22:07:14,662 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=330, PETRI_PLACES=56, PETRI_TRANSITIONS=37} [2021-03-25 22:07:14,662 INFO L343 CegarLoopForPetriNet]: 17 programPoint places, 39 predicate places. [2021-03-25 22:07:14,662 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 22:07:14,662 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 56 places, 37 transitions, 330 flow [2021-03-25 22:07:14,662 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 56 places, 37 transitions, 330 flow [2021-03-25 22:07:14,662 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 54 places, 37 transitions, 330 flow [2021-03-25 22:07:14,666 INFO L129 PetriNetUnfolder]: 16/51 cut-off events. [2021-03-25 22:07:14,666 INFO L130 PetriNetUnfolder]: For 216/218 co-relation queries the response was YES. [2021-03-25 22:07:14,666 INFO L84 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 51 events. 16/51 cut-off events. For 216/218 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 114 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 195. Up to 17 conditions per place. [2021-03-25 22:07:14,666 INFO L142 LiptonReduction]: Number of co-enabled transitions 4 [2021-03-25 22:07:14,667 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 22:07:14,667 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 22:07:14,668 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-03-25 22:07:14,668 INFO L480 AbstractCegarLoop]: Abstraction has has 54 places, 37 transitions, 330 flow [2021-03-25 22:07:14,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:14,668 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:07:14,668 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:07:14,668 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-25 22:07:14,668 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 22:07:14,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:07:14,668 INFO L82 PathProgramCache]: Analyzing trace with hash 145224026, now seen corresponding path program 3 times [2021-03-25 22:07:14,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:07:14,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670337749] [2021-03-25 22:07:14,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:07:14,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:07:14,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:14,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:14,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:14,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:14,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:14,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:14,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670337749] [2021-03-25 22:07:14,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 22:07:14,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 22:07:14,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136665041] [2021-03-25 22:07:14,687 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 22:07:14,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:07:14,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 22:07:14,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-25 22:07:14,688 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2021-03-25 22:07:14,688 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 37 transitions, 330 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:14,688 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:07:14,688 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2021-03-25 22:07:14,688 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:07:14,718 INFO L129 PetriNetUnfolder]: 16/47 cut-off events. [2021-03-25 22:07:14,718 INFO L130 PetriNetUnfolder]: For 222/222 co-relation queries the response was YES. [2021-03-25 22:07:14,718 INFO L84 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 47 events. 16/47 cut-off events. For 222/222 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 89 event pairs, 1 based on Foata normal form. 1/48 useless extension candidates. Maximal degree in co-relation 229. Up to 35 conditions per place. [2021-03-25 22:07:14,719 INFO L132 encePairwiseOnDemand]: 34/40 looper letters, 25 selfloop transitions, 6 changer transitions 1/35 dead transitions. [2021-03-25 22:07:14,719 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 35 transitions, 378 flow [2021-03-25 22:07:14,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-25 22:07:14,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-25 22:07:14,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 76 transitions. [2021-03-25 22:07:14,719 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.31666666666666665 [2021-03-25 22:07:14,719 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 76 transitions. [2021-03-25 22:07:14,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 76 transitions. [2021-03-25 22:07:14,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:07:14,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 76 transitions. [2021-03-25 22:07:14,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:14,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 40.0) internal successors, (280), 7 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:14,720 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 40.0) internal successors, (280), 7 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:14,720 INFO L185 Difference]: Start difference. First operand has 54 places, 37 transitions, 330 flow. Second operand 6 states and 76 transitions. [2021-03-25 22:07:14,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 35 transitions, 378 flow [2021-03-25 22:07:14,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 35 transitions, 333 flow, removed 8 selfloop flow, removed 8 redundant places. [2021-03-25 22:07:14,722 INFO L241 Difference]: Finished difference. Result has 51 places, 34 transitions, 269 flow [2021-03-25 22:07:14,722 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=269, PETRI_PLACES=51, PETRI_TRANSITIONS=34} [2021-03-25 22:07:14,723 INFO L343 CegarLoopForPetriNet]: 17 programPoint places, 34 predicate places. [2021-03-25 22:07:14,723 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 22:07:14,723 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 34 transitions, 269 flow [2021-03-25 22:07:14,723 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 34 transitions, 269 flow [2021-03-25 22:07:14,724 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 47 places, 34 transitions, 269 flow [2021-03-25 22:07:14,726 INFO L129 PetriNetUnfolder]: 15/44 cut-off events. [2021-03-25 22:07:14,726 INFO L130 PetriNetUnfolder]: For 131/133 co-relation queries the response was YES. [2021-03-25 22:07:14,726 INFO L84 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 44 events. 15/44 cut-off events. For 131/133 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 78 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 137. Up to 14 conditions per place. [2021-03-25 22:07:14,727 INFO L142 LiptonReduction]: Number of co-enabled transitions 4 [2021-03-25 22:07:14,729 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 22:07:14,729 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 22:07:14,729 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-03-25 22:07:14,729 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 34 transitions, 269 flow [2021-03-25 22:07:14,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:14,730 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:07:14,730 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:07:14,730 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-25 22:07:14,730 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 22:07:14,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:07:14,730 INFO L82 PathProgramCache]: Analyzing trace with hash -2053434854, now seen corresponding path program 1 times [2021-03-25 22:07:14,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:07:14,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581878468] [2021-03-25 22:07:14,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:07:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:07:14,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:14,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:14,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 22:07:14,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:14,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:14,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:14,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:14,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581878468] [2021-03-25 22:07:14,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732430310] [2021-03-25 22:07:14,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 22:07:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:07:14,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2021-03-25 22:07:14,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 22:07:14,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:14,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:14,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:14,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:14,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:14,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:14,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:14,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:14,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:14,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:14,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:14,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:14,776 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:14,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:14,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:14,778 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:14,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:14,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:14,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:07:14,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:14,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:14,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:14,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 22:07:14,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 22:07:14,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 22:07:14,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 22:07:14,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:14,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:14,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:14,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:14,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:14,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:14,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:14,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:14,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:14,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:14,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:14,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:14,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:14,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:14,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:14,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:14,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:14,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:14,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:14,809 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:14,810 INFO L142 QuantifierPusher]: treesize reduction 7, result has 12.5 percent of original size [2021-03-25 22:07:14,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:14,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:14,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:14,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:14,811 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:14,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:14,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:14,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:14,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:14,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:14,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 22:07:14,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:14,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 22:07:14,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-03-25 22:07:14,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806043625] [2021-03-25 22:07:14,826 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 22:07:14,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:07:14,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 22:07:14,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-25 22:07:14,827 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2021-03-25 22:07:14,827 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 34 transitions, 269 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:14,827 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:07:14,827 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2021-03-25 22:07:14,827 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:07:14,873 INFO L129 PetriNetUnfolder]: 17/50 cut-off events. [2021-03-25 22:07:14,873 INFO L130 PetriNetUnfolder]: For 162/162 co-relation queries the response was YES. [2021-03-25 22:07:14,874 INFO L84 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 50 events. 17/50 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 98 event pairs, 0 based on Foata normal form. 3/53 useless extension candidates. Maximal degree in co-relation 181. Up to 25 conditions per place. [2021-03-25 22:07:14,874 INFO L132 encePairwiseOnDemand]: 34/40 looper letters, 20 selfloop transitions, 17 changer transitions 0/40 dead transitions. [2021-03-25 22:07:14,874 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 40 transitions, 388 flow [2021-03-25 22:07:14,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 22:07:14,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 22:07:14,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2021-03-25 22:07:14,876 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.33214285714285713 [2021-03-25 22:07:14,876 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 93 transitions. [2021-03-25 22:07:14,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 93 transitions. [2021-03-25 22:07:14,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:07:14,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 93 transitions. [2021-03-25 22:07:14,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 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) [2021-03-25 22:07:14,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:14,878 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 40.0) internal successors, (320), 8 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:14,878 INFO L185 Difference]: Start difference. First operand has 47 places, 34 transitions, 269 flow. Second operand 7 states and 93 transitions. [2021-03-25 22:07:14,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 40 transitions, 388 flow [2021-03-25 22:07:14,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 40 transitions, 383 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 22:07:14,881 INFO L241 Difference]: Finished difference. Result has 53 places, 37 transitions, 339 flow [2021-03-25 22:07:14,881 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=339, PETRI_PLACES=53, PETRI_TRANSITIONS=37} [2021-03-25 22:07:14,882 INFO L343 CegarLoopForPetriNet]: 17 programPoint places, 36 predicate places. [2021-03-25 22:07:14,882 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 22:07:14,882 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 37 transitions, 339 flow [2021-03-25 22:07:14,882 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 37 transitions, 339 flow [2021-03-25 22:07:14,883 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 53 places, 37 transitions, 339 flow [2021-03-25 22:07:14,886 INFO L129 PetriNetUnfolder]: 16/48 cut-off events. [2021-03-25 22:07:14,886 INFO L130 PetriNetUnfolder]: For 209/211 co-relation queries the response was YES. [2021-03-25 22:07:14,886 INFO L84 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 48 events. 16/48 cut-off events. For 209/211 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 98 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 187. Up to 17 conditions per place. [2021-03-25 22:07:14,887 INFO L142 LiptonReduction]: Number of co-enabled transitions 4 [2021-03-25 22:07:14,888 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 22:07:14,888 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 22:07:14,888 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-03-25 22:07:14,888 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 37 transitions, 339 flow [2021-03-25 22:07:14,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:14,888 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:07:14,888 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:07:15,106 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-03-25 22:07:15,106 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 22:07:15,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:07:15,107 INFO L82 PathProgramCache]: Analyzing trace with hash -648617389, now seen corresponding path program 1 times [2021-03-25 22:07:15,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:07:15,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123227527] [2021-03-25 22:07:15,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:07:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:07:15,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:15,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:15,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:15,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:15,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:15,163 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 22:07:15,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:15,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123227527] [2021-03-25 22:07:15,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449232836] [2021-03-25 22:07:15,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 22:07:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:07:15,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 14 conjunts are in the unsatisfiable core [2021-03-25 22:07:15,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 22:07:15,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:15,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:15,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:15,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:15,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,198 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,201 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:15,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:15,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:15,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:15,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:15,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:07:15,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 22:07:15,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:15,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:07:15,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 22:07:15,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:15,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:15,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:07:15,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:15,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:07:15,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:15,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:15,251 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.7 percent of original size [2021-03-25 22:07:15,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:07:15,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:15,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:15,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:07:15,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:15,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:15,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:15,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:15,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:07:15,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:15,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:15,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:07:15,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:15,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:15,284 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-25 22:07:15,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:07:15,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:15,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:07:15,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:07:15,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:15,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 22:07:15,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-03-25 22:07:15,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632144892] [2021-03-25 22:07:15,302 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-25 22:07:15,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:07:15,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-25 22:07:15,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-03-25 22:07:15,303 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2021-03-25 22:07:15,303 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 37 transitions, 339 flow. Second operand has 14 states, 14 states have (on average 9.142857142857142) internal successors, (128), 14 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:15,303 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:07:15,303 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2021-03-25 22:07:15,303 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:07:15,402 INFO L129 PetriNetUnfolder]: 17/55 cut-off events. [2021-03-25 22:07:15,402 INFO L130 PetriNetUnfolder]: For 237/237 co-relation queries the response was YES. [2021-03-25 22:07:15,403 INFO L84 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 55 events. 17/55 cut-off events. For 237/237 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 126 event pairs, 1 based on Foata normal form. 1/56 useless extension candidates. Maximal degree in co-relation 247. Up to 20 conditions per place. [2021-03-25 22:07:15,403 INFO L132 encePairwiseOnDemand]: 31/40 looper letters, 23 selfloop transitions, 14 changer transitions 5/44 dead transitions. [2021-03-25 22:07:15,403 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 44 transitions, 492 flow [2021-03-25 22:07:15,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 22:07:15,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 22:07:15,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2021-03-25 22:07:15,404 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.26944444444444443 [2021-03-25 22:07:15,404 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 97 transitions. [2021-03-25 22:07:15,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 97 transitions. [2021-03-25 22:07:15,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:07:15,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 97 transitions. [2021-03-25 22:07:15,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:15,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 40.0) internal successors, (400), 10 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:15,406 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 40.0) internal successors, (400), 10 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:15,406 INFO L185 Difference]: Start difference. First operand has 53 places, 37 transitions, 339 flow. Second operand 9 states and 97 transitions. [2021-03-25 22:07:15,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 44 transitions, 492 flow [2021-03-25 22:07:15,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 44 transitions, 448 flow, removed 8 selfloop flow, removed 3 redundant places. [2021-03-25 22:07:15,408 INFO L241 Difference]: Finished difference. Result has 61 places, 36 transitions, 329 flow [2021-03-25 22:07:15,408 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=329, PETRI_PLACES=61, PETRI_TRANSITIONS=36} [2021-03-25 22:07:15,409 INFO L343 CegarLoopForPetriNet]: 17 programPoint places, 44 predicate places. [2021-03-25 22:07:15,409 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 22:07:15,409 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 36 transitions, 329 flow [2021-03-25 22:07:15,409 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 36 transitions, 329 flow [2021-03-25 22:07:15,409 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 58 places, 36 transitions, 329 flow [2021-03-25 22:07:15,412 INFO L129 PetriNetUnfolder]: 14/45 cut-off events. [2021-03-25 22:07:15,413 INFO L130 PetriNetUnfolder]: For 194/196 co-relation queries the response was YES. [2021-03-25 22:07:15,413 INFO L84 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 45 events. 14/45 cut-off events. For 194/196 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 89 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 200. Up to 13 conditions per place. [2021-03-25 22:07:15,413 INFO L142 LiptonReduction]: Number of co-enabled transitions 4 [2021-03-25 22:07:15,414 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 22:07:15,414 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 22:07:15,414 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-03-25 22:07:15,415 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 36 transitions, 329 flow [2021-03-25 22:07:15,415 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 9.142857142857142) internal successors, (128), 14 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:15,415 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:07:15,415 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:07:15,635 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-03-25 22:07:15,636 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 22:07:15,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:07:15,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1430187939, now seen corresponding path program 2 times [2021-03-25 22:07:15,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:07:15,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730293884] [2021-03-25 22:07:15,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:07:15,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:07:15,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:15,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:15,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:15,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:15,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:15,696 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 22:07:15,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:15,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730293884] [2021-03-25 22:07:15,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62013132] [2021-03-25 22:07:15,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-03-25 22:07:15,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-25 22:07:15,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-25 22:07:15,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 14 conjunts are in the unsatisfiable core [2021-03-25 22:07:15,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 22:07:15,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:15,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:15,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:15,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:15,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:15,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:15,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:15,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:15,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:15,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:15,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 22:07:15,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:15,774 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:15,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:15,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:07:15,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 22:07:15,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:15,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:07:15,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 22:07:15,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:15,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:15,809 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.7 percent of original size [2021-03-25 22:07:15,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:07:15,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:15,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:15,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:07:15,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:15,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:15,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:15,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:15,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:07:15,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:15,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:15,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:07:15,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:15,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:15,845 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-25 22:07:15,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:07:15,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:15,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:07:15,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:07:15,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:15,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:15,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:15,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 22:07:15,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-03-25 22:07:15,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332312452] [2021-03-25 22:07:15,862 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-25 22:07:15,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:07:15,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-25 22:07:15,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-03-25 22:07:15,863 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2021-03-25 22:07:15,863 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 36 transitions, 329 flow. Second operand has 14 states, 14 states have (on average 9.142857142857142) internal successors, (128), 14 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:15,863 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:07:15,863 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2021-03-25 22:07:15,864 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:07:15,965 INFO L129 PetriNetUnfolder]: 15/51 cut-off events. [2021-03-25 22:07:15,965 INFO L130 PetriNetUnfolder]: For 226/226 co-relation queries the response was YES. [2021-03-25 22:07:15,965 INFO L84 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 51 events. 15/51 cut-off events. For 226/226 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 109 event pairs, 1 based on Foata normal form. 1/52 useless extension candidates. Maximal degree in co-relation 263. Up to 18 conditions per place. [2021-03-25 22:07:15,965 INFO L132 encePairwiseOnDemand]: 31/40 looper letters, 20 selfloop transitions, 15 changer transitions 4/41 dead transitions. [2021-03-25 22:07:15,966 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 41 transitions, 450 flow [2021-03-25 22:07:15,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 22:07:15,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 22:07:15,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2021-03-25 22:07:15,968 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.26944444444444443 [2021-03-25 22:07:15,968 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 97 transitions. [2021-03-25 22:07:15,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 97 transitions. [2021-03-25 22:07:15,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:07:15,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 97 transitions. [2021-03-25 22:07:15,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:15,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 40.0) internal successors, (400), 10 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:15,970 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 40.0) internal successors, (400), 10 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:15,970 INFO L185 Difference]: Start difference. First operand has 58 places, 36 transitions, 329 flow. Second operand 9 states and 97 transitions. [2021-03-25 22:07:15,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 41 transitions, 450 flow [2021-03-25 22:07:15,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 41 transitions, 421 flow, removed 4 selfloop flow, removed 7 redundant places. [2021-03-25 22:07:15,973 INFO L241 Difference]: Finished difference. Result has 61 places, 34 transitions, 319 flow [2021-03-25 22:07:15,973 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=319, PETRI_PLACES=61, PETRI_TRANSITIONS=34} [2021-03-25 22:07:15,973 INFO L343 CegarLoopForPetriNet]: 17 programPoint places, 44 predicate places. [2021-03-25 22:07:15,973 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 22:07:15,973 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 34 transitions, 319 flow [2021-03-25 22:07:15,973 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 34 transitions, 319 flow [2021-03-25 22:07:15,974 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 58 places, 34 transitions, 319 flow [2021-03-25 22:07:15,982 INFO L129 PetriNetUnfolder]: 13/44 cut-off events. [2021-03-25 22:07:15,982 INFO L130 PetriNetUnfolder]: For 216/218 co-relation queries the response was YES. [2021-03-25 22:07:15,982 INFO L84 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 44 events. 13/44 cut-off events. For 216/218 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 82 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 192. Up to 12 conditions per place. [2021-03-25 22:07:15,984 INFO L142 LiptonReduction]: Number of co-enabled transitions 4 [2021-03-25 22:07:16,001 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 22:07:16,001 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 22:07:16,002 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 29 [2021-03-25 22:07:16,002 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 34 transitions, 324 flow [2021-03-25 22:07:16,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 9.142857142857142) internal successors, (128), 14 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:16,002 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:07:16,002 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:07:16,215 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-03-25 22:07:16,216 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 22:07:16,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:07:16,217 INFO L82 PathProgramCache]: Analyzing trace with hash -786251809, now seen corresponding path program 3 times [2021-03-25 22:07:16,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:07:16,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221002762] [2021-03-25 22:07:16,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:07:16,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:07:16,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:16,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:16,253 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:16,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:16,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:16,274 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 22:07:16,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:16,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221002762] [2021-03-25 22:07:16,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173014060] [2021-03-25 22:07:16,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 22:07:16,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-03-25 22:07:16,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-25 22:07:16,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 14 conjunts are in the unsatisfiable core [2021-03-25 22:07:16,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 22:07:16,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:16,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:16,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:16,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:16,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:16,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:16,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:16,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:16,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:16,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:07:16,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 22:07:16,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:16,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:07:16,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 22:07:16,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:16,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:16,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:07:16,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:16,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:07:16,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:16,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:16,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:16,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:16,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 22:07:16,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:16,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:16,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 22:07:16,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:16,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:16,389 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.7 percent of original size [2021-03-25 22:07:16,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:07:16,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:16,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:16,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:07:16,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:16,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:16,406 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-25 22:07:16,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:07:16,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:16,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,408 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:07:16,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:07:16,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:16,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 22:07:16,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-03-25 22:07:16,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168410998] [2021-03-25 22:07:16,423 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-25 22:07:16,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:07:16,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-25 22:07:16,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-03-25 22:07:16,424 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2021-03-25 22:07:16,424 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 34 transitions, 324 flow. Second operand has 14 states, 14 states have (on average 9.142857142857142) internal successors, (128), 14 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:16,424 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:07:16,424 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2021-03-25 22:07:16,424 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:07:16,558 INFO L129 PetriNetUnfolder]: 13/47 cut-off events. [2021-03-25 22:07:16,559 INFO L130 PetriNetUnfolder]: For 229/229 co-relation queries the response was YES. [2021-03-25 22:07:16,559 INFO L84 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 47 events. 13/47 cut-off events. For 229/229 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 99 event pairs, 1 based on Foata normal form. 1/48 useless extension candidates. Maximal degree in co-relation 240. Up to 12 conditions per place. [2021-03-25 22:07:16,560 INFO L132 encePairwiseOnDemand]: 31/41 looper letters, 18 selfloop transitions, 15 changer transitions 2/37 dead transitions. [2021-03-25 22:07:16,560 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 37 transitions, 414 flow [2021-03-25 22:07:16,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 22:07:16,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 22:07:16,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2021-03-25 22:07:16,560 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2601626016260163 [2021-03-25 22:07:16,561 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 96 transitions. [2021-03-25 22:07:16,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 96 transitions. [2021-03-25 22:07:16,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:07:16,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 96 transitions. [2021-03-25 22:07:16,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:16,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 41.0) internal successors, (410), 10 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:16,563 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 41.0) internal successors, (410), 10 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:16,563 INFO L185 Difference]: Start difference. First operand has 58 places, 34 transitions, 324 flow. Second operand 9 states and 96 transitions. [2021-03-25 22:07:16,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 37 transitions, 414 flow [2021-03-25 22:07:16,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 37 transitions, 371 flow, removed 6 selfloop flow, removed 8 redundant places. [2021-03-25 22:07:16,566 INFO L241 Difference]: Finished difference. Result has 59 places, 32 transitions, 292 flow [2021-03-25 22:07:16,566 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=292, PETRI_PLACES=59, PETRI_TRANSITIONS=32} [2021-03-25 22:07:16,568 INFO L343 CegarLoopForPetriNet]: 17 programPoint places, 42 predicate places. [2021-03-25 22:07:16,568 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 22:07:16,568 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 32 transitions, 292 flow [2021-03-25 22:07:16,569 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 32 transitions, 292 flow [2021-03-25 22:07:16,569 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 57 places, 32 transitions, 292 flow [2021-03-25 22:07:16,572 INFO L129 PetriNetUnfolder]: 12/41 cut-off events. [2021-03-25 22:07:16,572 INFO L130 PetriNetUnfolder]: For 199/201 co-relation queries the response was YES. [2021-03-25 22:07:16,572 INFO L84 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 41 events. 12/41 cut-off events. For 199/201 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 77 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 175. Up to 11 conditions per place. [2021-03-25 22:07:16,572 INFO L142 LiptonReduction]: Number of co-enabled transitions 2 [2021-03-25 22:07:16,573 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 22:07:16,573 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 22:07:16,573 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-03-25 22:07:16,573 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 32 transitions, 292 flow [2021-03-25 22:07:16,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 9.142857142857142) internal successors, (128), 14 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:16,574 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:07:16,574 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:07:16,787 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-03-25 22:07:16,788 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 22:07:16,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:07:16,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1951099560, now seen corresponding path program 1 times [2021-03-25 22:07:16,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:07:16,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243211886] [2021-03-25 22:07:16,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:07:16,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:07:16,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:16,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:16,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:16,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:16,835 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 22:07:16,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:16,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243211886] [2021-03-25 22:07:16,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278627064] [2021-03-25 22:07:16,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 22:07:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:07:16,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 14 conjunts are in the unsatisfiable core [2021-03-25 22:07:16,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 22:07:16,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:16,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:16,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:16,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:16,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:16,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:16,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:16,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:16,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:16,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:07:16,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 22:07:16,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:16,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:07:16,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 22:07:16,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:16,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:16,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:16,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:16,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 22:07:16,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:16,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:07:16,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 22:07:16,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:16,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:16,927 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.7 percent of original size [2021-03-25 22:07:16,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:07:16,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:16,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:16,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:07:16,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:16,932 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:16,943 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-25 22:07:16,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:07:16,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:16,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:07:16,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:07:16,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:16,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:16,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:16,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 22:07:16,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-03-25 22:07:16,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533774112] [2021-03-25 22:07:16,958 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-25 22:07:16,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:07:16,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-25 22:07:16,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-03-25 22:07:16,959 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2021-03-25 22:07:16,959 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 32 transitions, 292 flow. Second operand has 12 states, 12 states have (on average 9.166666666666666) internal successors, (110), 12 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) [2021-03-25 22:07:16,960 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:07:16,960 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2021-03-25 22:07:16,960 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:07:17,046 INFO L129 PetriNetUnfolder]: 13/46 cut-off events. [2021-03-25 22:07:17,046 INFO L130 PetriNetUnfolder]: For 219/219 co-relation queries the response was YES. [2021-03-25 22:07:17,048 INFO L84 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 46 events. 13/46 cut-off events. For 219/219 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 86 event pairs, 1 based on Foata normal form. 2/48 useless extension candidates. Maximal degree in co-relation 234. Up to 13 conditions per place. [2021-03-25 22:07:17,048 INFO L132 encePairwiseOnDemand]: 31/41 looper letters, 12 selfloop transitions, 6 changer transitions 17/37 dead transitions. [2021-03-25 22:07:17,048 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 37 transitions, 405 flow [2021-03-25 22:07:17,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 22:07:17,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 22:07:17,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2021-03-25 22:07:17,049 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2652439024390244 [2021-03-25 22:07:17,049 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 87 transitions. [2021-03-25 22:07:17,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 87 transitions. [2021-03-25 22:07:17,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:07:17,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 87 transitions. [2021-03-25 22:07:17,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:17,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 41.0) internal successors, (369), 9 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:17,050 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 41.0) internal successors, (369), 9 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:17,051 INFO L185 Difference]: Start difference. First operand has 57 places, 32 transitions, 292 flow. Second operand 8 states and 87 transitions. [2021-03-25 22:07:17,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 37 transitions, 405 flow [2021-03-25 22:07:17,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 37 transitions, 350 flow, removed 5 selfloop flow, removed 11 redundant places. [2021-03-25 22:07:17,053 INFO L241 Difference]: Finished difference. Result has 55 places, 20 transitions, 138 flow [2021-03-25 22:07:17,053 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=138, PETRI_PLACES=55, PETRI_TRANSITIONS=20} [2021-03-25 22:07:17,053 INFO L343 CegarLoopForPetriNet]: 17 programPoint places, 38 predicate places. [2021-03-25 22:07:17,053 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 22:07:17,054 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 20 transitions, 138 flow [2021-03-25 22:07:17,054 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 20 transitions, 138 flow [2021-03-25 22:07:17,054 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 46 places, 20 transitions, 138 flow [2021-03-25 22:07:17,056 INFO L129 PetriNetUnfolder]: 4/21 cut-off events. [2021-03-25 22:07:17,056 INFO L130 PetriNetUnfolder]: For 81/83 co-relation queries the response was YES. [2021-03-25 22:07:17,057 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 21 events. 4/21 cut-off events. For 81/83 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 14 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 73. Up to 5 conditions per place. [2021-03-25 22:07:17,057 INFO L142 LiptonReduction]: Number of co-enabled transitions 2 [2021-03-25 22:07:17,083 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 22:07:17,083 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 22:07:17,083 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 30 [2021-03-25 22:07:17,084 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 19 transitions, 136 flow [2021-03-25 22:07:17,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 9.166666666666666) internal successors, (110), 12 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) [2021-03-25 22:07:17,084 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 22:07:17,084 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 22:07:17,303 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 22:07:17,304 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 22:07:17,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 22:07:17,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1925627617, now seen corresponding path program 4 times [2021-03-25 22:07:17,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 22:07:17,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073036617] [2021-03-25 22:07:17,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 22:07:17,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 22:07:17,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:17,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:17,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:17,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:17,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:17,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:17,356 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 22:07:17,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:17,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:17,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073036617] [2021-03-25 22:07:17,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013259558] [2021-03-25 22:07:17,366 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-25 22:07:17,394 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-25 22:07:17,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-25 22:07:17,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 14 conjunts are in the unsatisfiable core [2021-03-25 22:07:17,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-25 22:07:17,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:17,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:17,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:17,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 22:07:17,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:17,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:17,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:17,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:17,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:17,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:17,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:17,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:17,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:17,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:17,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:17,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:17,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:17,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:07:17,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 22:07:17,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:17,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 22:07:17,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 22:07:17,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:17,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:17,437 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.7 percent of original size [2021-03-25 22:07:17,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 22:07:17,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:17,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:17,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:07:17,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:17,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:17,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 22:07:17,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:17,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:17,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 22:07:17,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:17,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:17,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:17,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:17,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:07:17,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:17,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 22:07:17,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:07:17,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:17,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 22:07:17,490 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-25 22:07:17,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:07:17,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-03-25 22:07:17,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 22:07:17,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 22:07:17,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:17,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:17,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:17,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:17,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:17,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:17,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:17,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:17,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:17,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 22:07:17,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 22:07:17,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 22:07:17,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-25 22:07:17,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-03-25 22:07:17,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499775775] [2021-03-25 22:07:17,507 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-25 22:07:17,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 22:07:17,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-25 22:07:17,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-03-25 22:07:17,508 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2021-03-25 22:07:17,508 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 19 transitions, 136 flow. Second operand has 14 states, 14 states have (on average 9.142857142857142) internal successors, (128), 14 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:17,508 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 22:07:17,508 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2021-03-25 22:07:17,508 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 22:07:17,582 INFO L129 PetriNetUnfolder]: 5/21 cut-off events. [2021-03-25 22:07:17,582 INFO L130 PetriNetUnfolder]: For 86/86 co-relation queries the response was YES. [2021-03-25 22:07:17,582 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 21 events. 5/21 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 15 event pairs, 1 based on Foata normal form. 1/22 useless extension candidates. Maximal degree in co-relation 97. Up to 6 conditions per place. [2021-03-25 22:07:17,582 INFO L132 encePairwiseOnDemand]: 32/42 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2021-03-25 22:07:17,582 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 18 transitions, 164 flow [2021-03-25 22:07:17,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 22:07:17,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 22:07:17,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2021-03-25 22:07:17,583 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.23015873015873015 [2021-03-25 22:07:17,583 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 87 transitions. [2021-03-25 22:07:17,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 87 transitions. [2021-03-25 22:07:17,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 22:07:17,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 87 transitions. [2021-03-25 22:07:17,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:17,584 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) [2021-03-25 22:07:17,584 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) [2021-03-25 22:07:17,584 INFO L185 Difference]: Start difference. First operand has 45 places, 19 transitions, 136 flow. Second operand 9 states and 87 transitions. [2021-03-25 22:07:17,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 18 transitions, 164 flow [2021-03-25 22:07:17,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 18 transitions, 126 flow, removed 8 selfloop flow, removed 12 redundant places. [2021-03-25 22:07:17,585 INFO L241 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2021-03-25 22:07:17,585 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2021-03-25 22:07:17,586 INFO L343 CegarLoopForPetriNet]: 17 programPoint places, 23 predicate places. [2021-03-25 22:07:17,586 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 22:07:17,586 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 0 transitions, 0 flow [2021-03-25 22:07:17,586 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 0 transitions, 0 flow [2021-03-25 22:07:17,586 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 22:07:17,586 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 22:07:17,586 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 22:07:17,586 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-25 22:07:17,586 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 22:07:17,586 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 22:07:17,587 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 22:07:17,587 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 22:07:17,587 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 22:07:17,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 9.142857142857142) internal successors, (128), 14 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 22:07:17,787 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-03-25 22:07:17,790 INFO L202 PluginConnector]: Adding new model easy11.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 10:07:17 BasicIcfg [2021-03-25 22:07:17,790 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 22:07:17,791 INFO L168 Benchmark]: Toolchain (without parser) took 9964.81 ms. Allocated memory was 255.9 MB in the beginning and 444.6 MB in the end (delta: 188.7 MB). Free memory was 236.5 MB in the beginning and 304.8 MB in the end (delta: -68.3 MB). Peak memory consumption was 123.0 MB. Max. memory is 16.0 GB. [2021-03-25 22:07:17,791 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 22:07:17,792 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.90 ms. Allocated memory is still 255.9 MB. Free memory was 236.4 MB in the beginning and 235.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 22:07:17,794 INFO L168 Benchmark]: Boogie Preprocessor took 12.33 ms. Allocated memory is still 255.9 MB. Free memory was 235.0 MB in the beginning and 234.1 MB in the end (delta: 901.7 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 22:07:17,794 INFO L168 Benchmark]: RCFGBuilder took 216.75 ms. Allocated memory is still 255.9 MB. Free memory was 234.0 MB in the beginning and 238.7 MB in the end (delta: -4.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 16.0 GB. [2021-03-25 22:07:17,794 INFO L168 Benchmark]: TraceAbstraction took 9713.57 ms. Allocated memory was 255.9 MB in the beginning and 444.6 MB in the end (delta: 188.7 MB). Free memory was 238.3 MB in the beginning and 304.8 MB in the end (delta: -66.5 MB). Peak memory consumption was 124.1 MB. Max. memory is 16.0 GB. [2021-03-25 22:07:17,795 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 17.90 ms. Allocated memory is still 255.9 MB. Free memory was 236.4 MB in the beginning and 235.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.33 ms. Allocated memory is still 255.9 MB. Free memory was 235.0 MB in the beginning and 234.1 MB in the end (delta: 901.7 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 216.75 ms. Allocated memory is still 255.9 MB. Free memory was 234.0 MB in the beginning and 238.7 MB in the end (delta: -4.7 MB). Peak memory consumption was 22.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 9713.57 ms. Allocated memory was 255.9 MB in the beginning and 444.6 MB in the end (delta: 188.7 MB). Free memory was 238.3 MB in the beginning and 304.8 MB in the end (delta: -66.5 MB). Peak memory consumption was 124.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 166.2ms, 24 PlacesBefore, 17 PlacesAfterwards, 19 TransitionsBefore, 12 TransitionsAfterwards, 96 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 6 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 7 TotalNumberOfCompositions, 38 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 38, positive: 38, positive conditional: 0, positive unconditional: 38, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 38, positive: 38, positive conditional: 0, positive unconditional: 38, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 38, positive: 38, positive conditional: 0, positive unconditional: 38, 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: 38, positive: 36, positive conditional: 0, positive unconditional: 36, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.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.Query Time [ms]: [ total: 14, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 38, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 38, unknown conditional: 0, unknown unconditional: 38] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 30.5ms, 24 PlacesBefore, 22 PlacesAfterwards, 21 TransitionsBefore, 20 TransitionsAfterwards, 42 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 1 MoverChecksTotal, Independence Relation Statistics: 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: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 35.4ms, 31 PlacesBefore, 30 PlacesAfterwards, 33 TransitionsBefore, 33 TransitionsAfterwards, 40 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 80.0ms, 39 PlacesBefore, 38 PlacesAfterwards, 37 TransitionsBefore, 37 TransitionsAfterwards, 38 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.6ms, 38 PlacesBefore, 38 PlacesAfterwards, 38 TransitionsBefore, 38 TransitionsAfterwards, 36 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.5ms, 44 PlacesBefore, 43 PlacesAfterwards, 40 TransitionsBefore, 40 TransitionsAfterwards, 38 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.9ms, 43 PlacesBefore, 43 PlacesAfterwards, 42 TransitionsBefore, 42 TransitionsAfterwards, 40 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 16.5ms, 45 PlacesBefore, 45 PlacesAfterwards, 40 TransitionsBefore, 40 TransitionsAfterwards, 40 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 29.9ms, 47 PlacesBefore, 47 PlacesAfterwards, 43 TransitionsBefore, 43 TransitionsAfterwards, 46 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.8ms, 49 PlacesBefore, 47 PlacesAfterwards, 40 TransitionsBefore, 40 TransitionsAfterwards, 42 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.6ms, 52 PlacesBefore, 51 PlacesAfterwards, 41 TransitionsBefore, 41 TransitionsAfterwards, 42 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 31.7ms, 55 PlacesBefore, 53 PlacesAfterwards, 44 TransitionsBefore, 43 TransitionsAfterwards, 42 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.2ms, 54 PlacesBefore, 54 PlacesAfterwards, 46 TransitionsBefore, 46 TransitionsAfterwards, 46 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.6ms, 55 PlacesBefore, 55 PlacesAfterwards, 46 TransitionsBefore, 46 TransitionsAfterwards, 48 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.2ms, 60 PlacesBefore, 60 PlacesAfterwards, 49 TransitionsBefore, 49 TransitionsAfterwards, 50 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 13.2ms, 64 PlacesBefore, 64 PlacesAfterwards, 51 TransitionsBefore, 51 TransitionsAfterwards, 46 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 63.8ms, 73 PlacesBefore, 72 PlacesAfterwards, 58 TransitionsBefore, 58 TransitionsAfterwards, 46 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 2 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.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] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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: 2, positive: 1, positive conditional: 0, positive unconditional: 1, 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): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 13.8ms, 78 PlacesBefore, 77 PlacesAfterwards, 58 TransitionsBefore, 58 TransitionsAfterwards, 34 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 55.9ms, 82 PlacesBefore, 77 PlacesAfterwards, 53 TransitionsBefore, 53 TransitionsAfterwards, 34 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 1 MoverChecksTotal, Independence Relation Statistics: 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: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 13.3ms, 77 PlacesBefore, 75 PlacesAfterwards, 57 TransitionsBefore, 57 TransitionsAfterwards, 36 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 18.3ms, 79 PlacesBefore, 75 PlacesAfterwards, 51 TransitionsBefore, 51 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.8ms, 77 PlacesBefore, 76 PlacesAfterwards, 53 TransitionsBefore, 53 TransitionsAfterwards, 28 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.6ms, 79 PlacesBefore, 73 PlacesAfterwards, 41 TransitionsBefore, 41 TransitionsAfterwards, 18 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.7ms, 67 PlacesBefore, 62 PlacesAfterwards, 38 TransitionsBefore, 38 TransitionsAfterwards, 18 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.3ms, 56 PlacesBefore, 54 PlacesAfterwards, 37 TransitionsBefore, 37 TransitionsAfterwards, 4 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.4ms, 51 PlacesBefore, 47 PlacesAfterwards, 34 TransitionsBefore, 34 TransitionsAfterwards, 4 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.4ms, 53 PlacesBefore, 53 PlacesAfterwards, 37 TransitionsBefore, 37 TransitionsAfterwards, 4 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.4ms, 61 PlacesBefore, 58 PlacesAfterwards, 36 TransitionsBefore, 36 TransitionsAfterwards, 4 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 28.1ms, 61 PlacesBefore, 58 PlacesAfterwards, 34 TransitionsBefore, 34 TransitionsAfterwards, 4 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.4ms, 59 PlacesBefore, 57 PlacesAfterwards, 32 TransitionsBefore, 32 TransitionsAfterwards, 2 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 29.4ms, 55 PlacesBefore, 45 PlacesAfterwards, 20 TransitionsBefore, 19 TransitionsAfterwards, 2 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.6ms, 40 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 43]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 9648.2ms, OverallIterations: 31, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 2538.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 213.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 270 SDtfs, 286 SDslu, 471 SDs, 0 SdLazy, 2101 SolverSat, 188 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1016.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 359 GetRequests, 88 SyntacticMatches, 26 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 1831.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=719occurred in iteration=17, InterpolantAutomatonStates: 205, 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: 43.4ms SsaConstructionTime, 178.5ms SatisfiabilityAnalysisTime, 2760.6ms InterpolantComputationTime, 481 NumberOfCodeBlocks, 481 NumberOfCodeBlocksAsserted, 51 NumberOfCheckSat, 437 ConstructedInterpolants, 0 QuantifiedInterpolants, 2778 SizeOfPredicates, 34 NumberOfNonLiveVariables, 445 ConjunctsInSsa, 171 ConjunctsInUnsatCore, 44 InterpolantComputations, 20 PerfectInterpolantSequences, 10/44 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...