/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/regression/showcase/Fischer.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 17:48:49,138 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 17:48:49,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 17:48:49,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 17:48:49,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 17:48:49,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 17:48:49,170 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 17:48:49,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 17:48:49,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 17:48:49,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 17:48:49,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 17:48:49,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 17:48:49,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 17:48:49,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 17:48:49,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 17:48:49,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 17:48:49,179 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 17:48:49,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 17:48:49,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 17:48:49,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 17:48:49,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 17:48:49,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 17:48:49,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 17:48:49,187 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 17:48:49,189 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 17:48:49,192 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 17:48:49,193 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 17:48:49,193 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 17:48:49,194 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 17:48:49,195 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 17:48:49,195 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 17:48:49,196 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 17:48:49,196 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 17:48:49,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 17:48:49,197 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 17:48:49,197 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 17:48:49,198 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 17:48:49,230 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 17:48:49,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 17:48:49,232 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 17:48:49,232 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 17:48:49,232 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 17:48:49,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 17:48:49,232 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 17:48:49,232 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 17:48:49,233 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 17:48:49,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 17:48:49,233 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 17:48:49,233 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 17:48:49,233 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 17:48:49,235 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 17:48:49,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 17:48:49,235 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 17:48:49,235 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 17:48:49,235 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 17:48:49,235 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 17:48:49,236 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 17:48:49,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 17:48:49,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 17:48:49,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 17:48:49,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 17:48:49,236 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 17:48:49,236 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 17:48:49,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 17:48:49,237 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 17:48:49,237 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 17:48:49,237 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 17:48:49,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 17:48:49,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 17:48:49,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 17:48:49,548 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 17:48:49,548 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 17:48:49,555 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/Fischer.bpl [2021-03-25 17:48:49,556 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/Fischer.bpl' [2021-03-25 17:48:49,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 17:48:49,588 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 17:48:49,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 17:48:49,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 17:48:49,590 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 17:48:49,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:48:49" (1/1) ... [2021-03-25 17:48:49,606 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:48:49" (1/1) ... [2021-03-25 17:48:49,612 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 17:48:49,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 17:48:49,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 17:48:49,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 17:48:49,620 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:48:49" (1/1) ... [2021-03-25 17:48:49,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:48:49" (1/1) ... [2021-03-25 17:48:49,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:48:49" (1/1) ... [2021-03-25 17:48:49,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:48:49" (1/1) ... [2021-03-25 17:48:49,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:48:49" (1/1) ... [2021-03-25 17:48:49,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:48:49" (1/1) ... [2021-03-25 17:48:49,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:48:49" (1/1) ... [2021-03-25 17:48:49,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 17:48:49,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 17:48:49,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 17:48:49,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 17:48:49,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:48:49" (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 17:48:49,689 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process2 given in one single declaration [2021-03-25 17:48:49,689 INFO L130 BoogieDeclarations]: Found specification of procedure Process2 [2021-03-25 17:48:49,690 INFO L138 BoogieDeclarations]: Found implementation of procedure Process2 [2021-03-25 17:48:49,691 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process1 given in one single declaration [2021-03-25 17:48:49,691 INFO L130 BoogieDeclarations]: Found specification of procedure Process1 [2021-03-25 17:48:49,691 INFO L138 BoogieDeclarations]: Found implementation of procedure Process1 [2021-03-25 17:48:49,691 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 17:48:49,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 17:48:49,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 17:48:49,691 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Clock given in one single declaration [2021-03-25 17:48:49,691 INFO L130 BoogieDeclarations]: Found specification of procedure Clock [2021-03-25 17:48:49,692 INFO L138 BoogieDeclarations]: Found implementation of procedure Clock [2021-03-25 17:48:49,692 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 17:48:49,865 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 17:48:49,865 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-03-25 17:48:49,867 INFO L202 PluginConnector]: Adding new model Fischer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:48:49 BoogieIcfgContainer [2021-03-25 17:48:49,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 17:48:49,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 17:48:49,868 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 17:48:49,871 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 17:48:49,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Fischer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 05:48:49" (1/2) ... [2021-03-25 17:48:49,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73df6949 and model type Fischer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:48:49, skipping insertion in model container [2021-03-25 17:48:49,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Fischer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:48:49" (2/2) ... [2021-03-25 17:48:49,873 INFO L111 eAbstractionObserver]: Analyzing ICFG Fischer.bpl [2021-03-25 17:48:49,877 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 17:48:49,880 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-25 17:48:49,881 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 17:48:49,899 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:48:49,900 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:48:49,900 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:48:49,901 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:48:49,901 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:48:49,901 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:48:49,901 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:48:49,902 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:48:49,903 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:48:49,903 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:48:49,904 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:48:49,904 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:48:49,904 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:48:49,904 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:48:49,904 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:48:49,905 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:48:49,909 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:48:49,910 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:48:49,911 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 17:48:49,926 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-03-25 17:48:49,944 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 17:48:49,944 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 17:48:49,944 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 17:48:49,944 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 17:48:49,945 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 17:48:49,945 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 17:48:49,945 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 17:48:49,945 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 17:48:49,953 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 46 transitions, 107 flow [2021-03-25 17:48:50,001 INFO L129 PetriNetUnfolder]: 5/43 cut-off events. [2021-03-25 17:48:50,001 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:48:50,005 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 5/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 111 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-03-25 17:48:50,005 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 46 transitions, 107 flow [2021-03-25 17:48:50,009 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 43 transitions, 95 flow [2021-03-25 17:48:50,010 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:48:50,038 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 43 transitions, 95 flow [2021-03-25 17:48:50,040 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 43 transitions, 95 flow [2021-03-25 17:48:50,042 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 43 transitions, 95 flow [2021-03-25 17:48:50,074 INFO L129 PetriNetUnfolder]: 5/43 cut-off events. [2021-03-25 17:48:50,074 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:48:50,075 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 5/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 108 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-03-25 17:48:50,078 INFO L142 LiptonReduction]: Number of co-enabled transitions 818 [2021-03-25 17:48:50,383 INFO L154 LiptonReduction]: Checked pairs total: 1066 [2021-03-25 17:48:50,383 INFO L156 LiptonReduction]: Total number of compositions: 11 [2021-03-25 17:48:50,385 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 375 [2021-03-25 17:48:50,394 INFO L129 PetriNetUnfolder]: 1/12 cut-off events. [2021-03-25 17:48:50,394 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:48:50,394 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:48:50,395 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-25 17:48:50,395 INFO L428 AbstractCegarLoop]: === Iteration 1 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 17:48:50,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:48:50,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1098058064, now seen corresponding path program 1 times [2021-03-25 17:48:50,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:48:50,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141413474] [2021-03-25 17:48:50,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:48:50,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:48:50,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:48:50,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:48:50,504 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 17:48:50,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141413474] [2021-03-25 17:48:50,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:48:50,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-25 17:48:50,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828651341] [2021-03-25 17:48:50,514 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 17:48:50,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:48:50,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 17:48:50,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 17:48:50,536 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 57 [2021-03-25 17:48:50,538 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:48:50,538 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:48:50,538 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 57 [2021-03-25 17:48:50,539 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:48:50,594 INFO L129 PetriNetUnfolder]: 31/108 cut-off events. [2021-03-25 17:48:50,594 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:48:50,597 INFO L84 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 108 events. 31/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 361 event pairs, 4 based on Foata normal form. 41/138 useless extension candidates. Maximal degree in co-relation 153. Up to 30 conditions per place. [2021-03-25 17:48:50,599 INFO L132 encePairwiseOnDemand]: 45/57 looper letters, 8 selfloop transitions, 7 changer transitions 0/35 dead transitions. [2021-03-25 17:48:50,599 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 35 transitions, 109 flow [2021-03-25 17:48:50,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 17:48:50,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 17:48:50,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2021-03-25 17:48:50,611 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8538011695906432 [2021-03-25 17:48:50,611 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2021-03-25 17:48:50,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2021-03-25 17:48:50,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:48:50,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2021-03-25 17:48:50,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 17:48:50,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:48:50,625 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:48:50,626 INFO L185 Difference]: Start difference. First operand has 37 places, 32 transitions, 73 flow. Second operand 3 states and 146 transitions. [2021-03-25 17:48:50,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 35 transitions, 109 flow [2021-03-25 17:48:50,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 106 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-25 17:48:50,631 INFO L241 Difference]: Finished difference. Result has 35 places, 35 transitions, 120 flow [2021-03-25 17:48:50,633 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=35, PETRI_TRANSITIONS=35} [2021-03-25 17:48:50,633 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2021-03-25 17:48:50,633 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:48:50,634 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 35 transitions, 120 flow [2021-03-25 17:48:50,634 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 35 transitions, 120 flow [2021-03-25 17:48:50,635 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 35 transitions, 120 flow [2021-03-25 17:48:50,656 INFO L129 PetriNetUnfolder]: 31/102 cut-off events. [2021-03-25 17:48:50,657 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-03-25 17:48:50,659 INFO L84 FinitePrefix]: Finished finitePrefix Result has 180 conditions, 102 events. 31/102 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 332 event pairs, 2 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 170. Up to 30 conditions per place. [2021-03-25 17:48:50,660 INFO L142 LiptonReduction]: Number of co-enabled transitions 348 [2021-03-25 17:48:50,698 INFO L154 LiptonReduction]: Checked pairs total: 108 [2021-03-25 17:48:50,699 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 17:48:50,699 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 66 [2021-03-25 17:48:50,701 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 34 transitions, 118 flow [2021-03-25 17:48:50,701 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:48:50,701 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:48:50,701 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 17:48:50,701 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 17:48:50,702 INFO L428 AbstractCegarLoop]: === Iteration 2 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 17:48:50,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:48:50,703 INFO L82 PathProgramCache]: Analyzing trace with hash -747120156, now seen corresponding path program 1 times [2021-03-25 17:48:50,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:48:50,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000766408] [2021-03-25 17:48:50,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:48:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:48:50,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:48:50,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:48:50,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:48:50,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:48:50,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:48:50,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:48:50,729 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 17:48:50,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000766408] [2021-03-25 17:48:50,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:48:50,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 17:48:50,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388579500] [2021-03-25 17:48:50,731 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 17:48:50,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:48:50,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 17:48:50,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 17:48:50,732 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 58 [2021-03-25 17:48:50,733 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 34 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 17:48:50,733 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:48:50,733 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 58 [2021-03-25 17:48:50,733 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:48:50,778 INFO L129 PetriNetUnfolder]: 98/248 cut-off events. [2021-03-25 17:48:50,778 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-03-25 17:48:50,780 INFO L84 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 248 events. 98/248 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1096 event pairs, 13 based on Foata normal form. 5/229 useless extension candidates. Maximal degree in co-relation 528. Up to 115 conditions per place. [2021-03-25 17:48:50,781 INFO L132 encePairwiseOnDemand]: 48/58 looper letters, 13 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2021-03-25 17:48:50,781 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 43 transitions, 178 flow [2021-03-25 17:48:50,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 17:48:50,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 17:48:50,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2021-03-25 17:48:50,783 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7183908045977011 [2021-03-25 17:48:50,783 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 125 transitions. [2021-03-25 17:48:50,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 125 transitions. [2021-03-25 17:48:50,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:48:50,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 125 transitions. [2021-03-25 17:48:50,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:48:50,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states 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 17:48:50,786 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states 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 17:48:50,786 INFO L185 Difference]: Start difference. First operand has 34 places, 34 transitions, 118 flow. Second operand 3 states and 125 transitions. [2021-03-25 17:48:50,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 43 transitions, 178 flow [2021-03-25 17:48:50,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 43 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 17:48:50,788 INFO L241 Difference]: Finished difference. Result has 36 places, 41 transitions, 168 flow [2021-03-25 17:48:50,788 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=36, PETRI_TRANSITIONS=41} [2021-03-25 17:48:50,789 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, -1 predicate places. [2021-03-25 17:48:50,789 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:48:50,789 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 41 transitions, 168 flow [2021-03-25 17:48:50,790 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 41 transitions, 168 flow [2021-03-25 17:48:50,790 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 41 transitions, 168 flow [2021-03-25 17:48:50,804 INFO L129 PetriNetUnfolder]: 85/233 cut-off events. [2021-03-25 17:48:50,805 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2021-03-25 17:48:50,806 INFO L84 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 233 events. 85/233 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1106 event pairs, 5 based on Foata normal form. 0/222 useless extension candidates. Maximal degree in co-relation 464. Up to 93 conditions per place. [2021-03-25 17:48:50,808 INFO L142 LiptonReduction]: Number of co-enabled transitions 380 [2021-03-25 17:48:50,814 INFO L154 LiptonReduction]: Checked pairs total: 28 [2021-03-25 17:48:50,814 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:48:50,814 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 25 [2021-03-25 17:48:50,815 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 41 transitions, 168 flow [2021-03-25 17:48:50,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 17:48:50,815 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:48:50,815 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 17:48:50,816 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 17:48:50,816 INFO L428 AbstractCegarLoop]: === Iteration 3 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 17:48:50,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:48:50,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1037054279, now seen corresponding path program 1 times [2021-03-25 17:48:50,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:48:50,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736317675] [2021-03-25 17:48:50,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:48:50,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:48:50,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:48:50,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:48:50,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:48:50,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:48:50,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:48:50,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:48:50,832 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 17:48:50,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736317675] [2021-03-25 17:48:50,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:48:50,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 17:48:50,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223048850] [2021-03-25 17:48:50,833 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 17:48:50,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:48:50,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 17:48:50,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 17:48:50,834 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 58 [2021-03-25 17:48:50,834 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 41 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 17:48:50,834 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:48:50,834 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 58 [2021-03-25 17:48:50,834 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:48:50,875 INFO L129 PetriNetUnfolder]: 91/245 cut-off events. [2021-03-25 17:48:50,875 INFO L130 PetriNetUnfolder]: For 92/110 co-relation queries the response was YES. [2021-03-25 17:48:50,876 INFO L84 FinitePrefix]: Finished finitePrefix Result has 611 conditions, 245 events. 91/245 cut-off events. For 92/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1000 event pairs, 17 based on Foata normal form. 12/244 useless extension candidates. Maximal degree in co-relation 601. Up to 111 conditions per place. [2021-03-25 17:48:50,877 INFO L132 encePairwiseOnDemand]: 50/58 looper letters, 14 selfloop transitions, 5 changer transitions 0/41 dead transitions. [2021-03-25 17:48:50,877 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 41 transitions, 202 flow [2021-03-25 17:48:50,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 17:48:50,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 17:48:50,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2021-03-25 17:48:50,879 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6954022988505747 [2021-03-25 17:48:50,879 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 121 transitions. [2021-03-25 17:48:50,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 121 transitions. [2021-03-25 17:48:50,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:48:50,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 121 transitions. [2021-03-25 17:48:50,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 17:48:50,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states 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 17:48:50,881 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states 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 17:48:50,881 INFO L185 Difference]: Start difference. First operand has 36 places, 41 transitions, 168 flow. Second operand 3 states and 121 transitions. [2021-03-25 17:48:50,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 41 transitions, 202 flow [2021-03-25 17:48:50,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 41 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 17:48:50,883 INFO L241 Difference]: Finished difference. Result has 37 places, 40 transitions, 167 flow [2021-03-25 17:48:50,884 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=37, PETRI_TRANSITIONS=40} [2021-03-25 17:48:50,884 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2021-03-25 17:48:50,884 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:48:50,884 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 40 transitions, 167 flow [2021-03-25 17:48:50,884 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 40 transitions, 167 flow [2021-03-25 17:48:50,885 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 37 places, 40 transitions, 167 flow [2021-03-25 17:48:50,897 INFO L129 PetriNetUnfolder]: 79/226 cut-off events. [2021-03-25 17:48:50,897 INFO L130 PetriNetUnfolder]: For 33/34 co-relation queries the response was YES. [2021-03-25 17:48:50,898 INFO L84 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 226 events. 79/226 cut-off events. For 33/34 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 924 event pairs, 4 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 464. Up to 86 conditions per place. [2021-03-25 17:48:50,900 INFO L142 LiptonReduction]: Number of co-enabled transitions 352 [2021-03-25 17:48:50,904 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:48:50,904 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:48:50,904 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 20 [2021-03-25 17:48:50,905 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 40 transitions, 167 flow [2021-03-25 17:48:50,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 17:48:50,905 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:48:50,905 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 17:48:50,906 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 17:48:50,906 INFO L428 AbstractCegarLoop]: === Iteration 4 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 17:48:50,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:48:50,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1097866649, now seen corresponding path program 1 times [2021-03-25 17:48:50,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:48:50,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638176217] [2021-03-25 17:48:50,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:48:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:48:50,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:48:50,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:48:50,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:48:50,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:48:50,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:48:50,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:48:50,923 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 17:48:50,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638176217] [2021-03-25 17:48:50,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:48:50,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 17:48:50,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582436920] [2021-03-25 17:48:50,924 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 17:48:50,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:48:50,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 17:48:50,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 17:48:50,925 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 58 [2021-03-25 17:48:50,926 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 40 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 17:48:50,926 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:48:50,926 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 58 [2021-03-25 17:48:50,926 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:48:50,961 INFO L129 PetriNetUnfolder]: 98/274 cut-off events. [2021-03-25 17:48:50,961 INFO L130 PetriNetUnfolder]: For 117/127 co-relation queries the response was YES. [2021-03-25 17:48:50,962 INFO L84 FinitePrefix]: Finished finitePrefix Result has 706 conditions, 274 events. 98/274 cut-off events. For 117/127 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1182 event pairs, 14 based on Foata normal form. 5/267 useless extension candidates. Maximal degree in co-relation 695. Up to 94 conditions per place. [2021-03-25 17:48:50,964 INFO L132 encePairwiseOnDemand]: 50/58 looper letters, 14 selfloop transitions, 10 changer transitions 0/46 dead transitions. [2021-03-25 17:48:50,964 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 46 transitions, 238 flow [2021-03-25 17:48:50,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 17:48:50,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 17:48:50,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2021-03-25 17:48:50,965 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7011494252873564 [2021-03-25 17:48:50,965 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 122 transitions. [2021-03-25 17:48:50,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 122 transitions. [2021-03-25 17:48:50,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:48:50,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 122 transitions. [2021-03-25 17:48:50,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 17:48:50,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states 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 17:48:50,967 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states 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 17:48:50,967 INFO L185 Difference]: Start difference. First operand has 37 places, 40 transitions, 167 flow. Second operand 3 states and 122 transitions. [2021-03-25 17:48:50,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 46 transitions, 238 flow [2021-03-25 17:48:50,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 46 transitions, 232 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 17:48:50,970 INFO L241 Difference]: Finished difference. Result has 40 places, 44 transitions, 230 flow [2021-03-25 17:48:50,970 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=40, PETRI_TRANSITIONS=44} [2021-03-25 17:48:50,970 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 3 predicate places. [2021-03-25 17:48:50,970 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:48:50,971 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 44 transitions, 230 flow [2021-03-25 17:48:50,971 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 44 transitions, 230 flow [2021-03-25 17:48:50,971 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 44 transitions, 230 flow [2021-03-25 17:48:50,986 INFO L129 PetriNetUnfolder]: 79/238 cut-off events. [2021-03-25 17:48:50,986 INFO L130 PetriNetUnfolder]: For 187/195 co-relation queries the response was YES. [2021-03-25 17:48:50,987 INFO L84 FinitePrefix]: Finished finitePrefix Result has 625 conditions, 238 events. 79/238 cut-off events. For 187/195 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1046 event pairs, 4 based on Foata normal form. 1/228 useless extension candidates. Maximal degree in co-relation 614. Up to 87 conditions per place. [2021-03-25 17:48:50,989 INFO L142 LiptonReduction]: Number of co-enabled transitions 380 [2021-03-25 17:48:50,994 INFO L154 LiptonReduction]: Checked pairs total: 15 [2021-03-25 17:48:50,994 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:48:50,994 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 24 [2021-03-25 17:48:50,995 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 44 transitions, 230 flow [2021-03-25 17:48:50,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 17:48:50,995 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:48:50,995 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 17:48:50,996 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 17:48:50,996 INFO L428 AbstractCegarLoop]: === Iteration 5 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 17:48:50,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:48:50,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1787421985, now seen corresponding path program 2 times [2021-03-25 17:48:50,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:48:50,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421121651] [2021-03-25 17:48:50,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:48:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:48:51,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:48:51,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:48:51,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:48:51,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:48:51,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:48:51,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:48:51,011 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 17:48:51,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421121651] [2021-03-25 17:48:51,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:48:51,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 17:48:51,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133131314] [2021-03-25 17:48:51,012 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 17:48:51,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:48:51,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 17:48:51,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 17:48:51,013 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 58 [2021-03-25 17:48:51,013 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 44 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 17:48:51,013 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:48:51,013 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 58 [2021-03-25 17:48:51,013 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:48:51,049 INFO L129 PetriNetUnfolder]: 86/259 cut-off events. [2021-03-25 17:48:51,049 INFO L130 PetriNetUnfolder]: For 371/385 co-relation queries the response was YES. [2021-03-25 17:48:51,050 INFO L84 FinitePrefix]: Finished finitePrefix Result has 781 conditions, 259 events. 86/259 cut-off events. For 371/385 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1052 event pairs, 13 based on Foata normal form. 16/262 useless extension candidates. Maximal degree in co-relation 769. Up to 82 conditions per place. [2021-03-25 17:48:51,052 INFO L132 encePairwiseOnDemand]: 50/58 looper letters, 14 selfloop transitions, 8 changer transitions 0/44 dead transitions. [2021-03-25 17:48:51,052 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 262 flow [2021-03-25 17:48:51,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 17:48:51,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 17:48:51,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2021-03-25 17:48:51,053 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7126436781609196 [2021-03-25 17:48:51,053 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 124 transitions. [2021-03-25 17:48:51,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 124 transitions. [2021-03-25 17:48:51,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:48:51,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 124 transitions. [2021-03-25 17:48:51,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 17:48:51,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states 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 17:48:51,055 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states 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 17:48:51,055 INFO L185 Difference]: Start difference. First operand has 40 places, 44 transitions, 230 flow. Second operand 3 states and 124 transitions. [2021-03-25 17:48:51,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 262 flow [2021-03-25 17:48:51,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 17:48:51,058 INFO L241 Difference]: Finished difference. Result has 40 places, 42 transitions, 214 flow [2021-03-25 17:48:51,058 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=40, PETRI_TRANSITIONS=42} [2021-03-25 17:48:51,058 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 3 predicate places. [2021-03-25 17:48:51,058 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:48:51,058 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 42 transitions, 214 flow [2021-03-25 17:48:51,059 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 42 transitions, 214 flow [2021-03-25 17:48:51,059 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 42 transitions, 214 flow [2021-03-25 17:48:51,072 INFO L129 PetriNetUnfolder]: 68/227 cut-off events. [2021-03-25 17:48:51,073 INFO L130 PetriNetUnfolder]: For 178/186 co-relation queries the response was YES. [2021-03-25 17:48:51,074 INFO L84 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 227 events. 68/227 cut-off events. For 178/186 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 944 event pairs, 4 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 570. Up to 76 conditions per place. [2021-03-25 17:48:51,076 INFO L142 LiptonReduction]: Number of co-enabled transitions 356 [2021-03-25 17:48:51,080 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:48:51,080 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:48:51,080 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 22 [2021-03-25 17:48:51,081 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 42 transitions, 214 flow [2021-03-25 17:48:51,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 17:48:51,081 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:48:51,081 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 17:48:51,082 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 17:48:51,082 INFO L428 AbstractCegarLoop]: === Iteration 6 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 17:48:51,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:48:51,082 INFO L82 PathProgramCache]: Analyzing trace with hash 2014802579, now seen corresponding path program 1 times [2021-03-25 17:48:51,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:48:51,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560714992] [2021-03-25 17:48:51,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:48:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:48:51,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:48:51,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:48:51,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:48:51,103 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:48:51,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:48:51,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:48:51,108 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 17:48:51,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560714992] [2021-03-25 17:48:51,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:48:51,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 17:48:51,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99670442] [2021-03-25 17:48:51,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 17:48:51,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:48:51,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 17:48:51,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 17:48:51,110 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 58 [2021-03-25 17:48:51,110 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 42 transitions, 214 flow. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 17:48:51,110 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:48:51,110 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 58 [2021-03-25 17:48:51,110 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:48:51,164 INFO L129 PetriNetUnfolder]: 179/386 cut-off events. [2021-03-25 17:48:51,164 INFO L130 PetriNetUnfolder]: For 294/300 co-relation queries the response was YES. [2021-03-25 17:48:51,166 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1019 conditions, 386 events. 179/386 cut-off events. For 294/300 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1444 event pairs, 22 based on Foata normal form. 12/383 useless extension candidates. Maximal degree in co-relation 1006. Up to 188 conditions per place. [2021-03-25 17:48:51,167 INFO L132 encePairwiseOnDemand]: 54/58 looper letters, 12 selfloop transitions, 3 changer transitions 4/48 dead transitions. [2021-03-25 17:48:51,168 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 48 transitions, 280 flow [2021-03-25 17:48:51,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 17:48:51,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 17:48:51,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2021-03-25 17:48:51,169 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5905172413793104 [2021-03-25 17:48:51,169 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 137 transitions. [2021-03-25 17:48:51,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 137 transitions. [2021-03-25 17:48:51,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:48:51,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 137 transitions. [2021-03-25 17:48:51,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:48:51,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 0 states have call successors, (0), 0 states 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 17:48:51,171 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 0 states have call successors, (0), 0 states 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 17:48:51,171 INFO L185 Difference]: Start difference. First operand has 40 places, 42 transitions, 214 flow. Second operand 4 states and 137 transitions. [2021-03-25 17:48:51,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 48 transitions, 280 flow [2021-03-25 17:48:51,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 48 transitions, 271 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 17:48:51,174 INFO L241 Difference]: Finished difference. Result has 43 places, 43 transitions, 220 flow [2021-03-25 17:48:51,174 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2021-03-25 17:48:51,174 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 6 predicate places. [2021-03-25 17:48:51,174 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:48:51,174 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 43 places, 43 transitions, 220 flow [2021-03-25 17:48:51,174 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 43 places, 43 transitions, 220 flow [2021-03-25 17:48:51,175 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 43 places, 43 transitions, 220 flow [2021-03-25 17:48:51,202 INFO L129 PetriNetUnfolder]: 85/253 cut-off events. [2021-03-25 17:48:51,202 INFO L130 PetriNetUnfolder]: For 131/136 co-relation queries the response was YES. [2021-03-25 17:48:51,203 INFO L84 FinitePrefix]: Finished finitePrefix Result has 647 conditions, 253 events. 85/253 cut-off events. For 131/136 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 994 event pairs, 4 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 634. Up to 76 conditions per place. [2021-03-25 17:48:51,205 INFO L142 LiptonReduction]: Number of co-enabled transitions 380 [2021-03-25 17:48:51,210 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:48:51,210 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:48:51,210 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 36 [2021-03-25 17:48:51,211 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 220 flow [2021-03-25 17:48:51,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 17:48:51,211 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:48:51,211 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 17:48:51,211 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 17:48:51,212 INFO L428 AbstractCegarLoop]: === Iteration 7 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 17:48:51,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:48:51,212 INFO L82 PathProgramCache]: Analyzing trace with hash 591918176, now seen corresponding path program 1 times [2021-03-25 17:48:51,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:48:51,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298990100] [2021-03-25 17:48:51,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:48:51,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:48:51,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:48:51,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:48:51,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:48:51,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:48:51,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:48:51,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:48:51,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:48:51,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:48:51,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:48:51,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:48:51,248 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 17:48:51,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298990100] [2021-03-25 17:48:51,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:48:51,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 17:48:51,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982460429] [2021-03-25 17:48:51,249 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 17:48:51,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:48:51,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 17:48:51,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-25 17:48:51,250 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 58 [2021-03-25 17:48:51,250 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 220 flow. Second operand has 6 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 0 states have call successors, (0), 0 states 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 17:48:51,250 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:48:51,251 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 58 [2021-03-25 17:48:51,251 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:48:51,362 INFO L129 PetriNetUnfolder]: 185/416 cut-off events. [2021-03-25 17:48:51,362 INFO L130 PetriNetUnfolder]: For 354/365 co-relation queries the response was YES. [2021-03-25 17:48:51,364 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1230 conditions, 416 events. 185/416 cut-off events. For 354/365 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1524 event pairs, 19 based on Foata normal form. 8/414 useless extension candidates. Maximal degree in co-relation 1215. Up to 128 conditions per place. [2021-03-25 17:48:51,365 INFO L132 encePairwiseOnDemand]: 50/58 looper letters, 15 selfloop transitions, 3 changer transitions 19/65 dead transitions. [2021-03-25 17:48:51,366 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 65 transitions, 406 flow [2021-03-25 17:48:51,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 17:48:51,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 17:48:51,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 234 transitions. [2021-03-25 17:48:51,367 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5763546798029556 [2021-03-25 17:48:51,367 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 234 transitions. [2021-03-25 17:48:51,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 234 transitions. [2021-03-25 17:48:51,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:48:51,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 234 transitions. [2021-03-25 17:48:51,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.42857142857143) internal successors, (234), 7 states have internal predecessors, (234), 0 states have call successors, (0), 0 states 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 17:48:51,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 58.0) internal successors, (464), 8 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:48:51,369 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 58.0) internal successors, (464), 8 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:48:51,369 INFO L185 Difference]: Start difference. First operand has 43 places, 43 transitions, 220 flow. Second operand 7 states and 234 transitions. [2021-03-25 17:48:51,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 65 transitions, 406 flow [2021-03-25 17:48:51,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 65 transitions, 389 flow, removed 4 selfloop flow, removed 2 redundant places. [2021-03-25 17:48:51,373 INFO L241 Difference]: Finished difference. Result has 51 places, 42 transitions, 226 flow [2021-03-25 17:48:51,373 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=226, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2021-03-25 17:48:51,373 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 14 predicate places. [2021-03-25 17:48:51,373 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:48:51,373 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 42 transitions, 226 flow [2021-03-25 17:48:51,374 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 42 transitions, 226 flow [2021-03-25 17:48:51,374 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 42 transitions, 226 flow [2021-03-25 17:48:51,391 INFO L129 PetriNetUnfolder]: 78/251 cut-off events. [2021-03-25 17:48:51,391 INFO L130 PetriNetUnfolder]: For 224/226 co-relation queries the response was YES. [2021-03-25 17:48:51,392 INFO L84 FinitePrefix]: Finished finitePrefix Result has 697 conditions, 251 events. 78/251 cut-off events. For 224/226 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 986 event pairs, 7 based on Foata normal form. 1/242 useless extension candidates. Maximal degree in co-relation 680. Up to 75 conditions per place. [2021-03-25 17:48:51,395 INFO L142 LiptonReduction]: Number of co-enabled transitions 352 [2021-03-25 17:48:51,399 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:48:51,399 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:48:51,399 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 26 [2021-03-25 17:48:51,400 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 226 flow [2021-03-25 17:48:51,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 0 states have call successors, (0), 0 states 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 17:48:51,400 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:48:51,400 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 17:48:51,400 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 17:48:51,400 INFO L428 AbstractCegarLoop]: === Iteration 8 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 17:48:51,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:48:51,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1252490004, now seen corresponding path program 2 times [2021-03-25 17:48:51,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:48:51,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26819536] [2021-03-25 17:48:51,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:48:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:48:51,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:48:51,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:48:51,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:48:51,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:48:51,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:48:51,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:48:51,421 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 17:48:51,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26819536] [2021-03-25 17:48:51,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:48:51,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 17:48:51,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171304767] [2021-03-25 17:48:51,422 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 17:48:51,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:48:51,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 17:48:51,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-25 17:48:51,423 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 58 [2021-03-25 17:48:51,423 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states 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 17:48:51,423 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:48:51,424 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 58 [2021-03-25 17:48:51,424 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:48:51,473 INFO L129 PetriNetUnfolder]: 159/370 cut-off events. [2021-03-25 17:48:51,474 INFO L130 PetriNetUnfolder]: For 479/490 co-relation queries the response was YES. [2021-03-25 17:48:51,475 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1166 conditions, 370 events. 159/370 cut-off events. For 479/490 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1317 event pairs, 26 based on Foata normal form. 12/370 useless extension candidates. Maximal degree in co-relation 1147. Up to 190 conditions per place. [2021-03-25 17:48:51,477 INFO L132 encePairwiseOnDemand]: 54/58 looper letters, 12 selfloop transitions, 3 changer transitions 4/48 dead transitions. [2021-03-25 17:48:51,477 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 48 transitions, 295 flow [2021-03-25 17:48:51,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 17:48:51,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 17:48:51,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2021-03-25 17:48:51,478 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5862068965517241 [2021-03-25 17:48:51,479 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 136 transitions. [2021-03-25 17:48:51,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 136 transitions. [2021-03-25 17:48:51,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:48:51,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 136 transitions. [2021-03-25 17:48:51,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 17:48:51,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 0 states have call successors, (0), 0 states 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 17:48:51,480 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 0 states have call successors, (0), 0 states 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 17:48:51,480 INFO L185 Difference]: Start difference. First operand has 48 places, 42 transitions, 226 flow. Second operand 4 states and 136 transitions. [2021-03-25 17:48:51,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 48 transitions, 295 flow [2021-03-25 17:48:51,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 48 transitions, 281 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-03-25 17:48:51,484 INFO L241 Difference]: Finished difference. Result has 47 places, 43 transitions, 232 flow [2021-03-25 17:48:51,484 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2021-03-25 17:48:51,484 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2021-03-25 17:48:51,484 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:48:51,484 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 47 places, 43 transitions, 232 flow [2021-03-25 17:48:51,484 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 47 places, 43 transitions, 232 flow [2021-03-25 17:48:51,485 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 47 places, 43 transitions, 232 flow [2021-03-25 17:48:51,507 INFO L129 PetriNetUnfolder]: 95/286 cut-off events. [2021-03-25 17:48:51,507 INFO L130 PetriNetUnfolder]: For 193/195 co-relation queries the response was YES. [2021-03-25 17:48:51,508 INFO L84 FinitePrefix]: Finished finitePrefix Result has 803 conditions, 286 events. 95/286 cut-off events. For 193/195 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1098 event pairs, 9 based on Foata normal form. 0/275 useless extension candidates. Maximal degree in co-relation 787. Up to 77 conditions per place. [2021-03-25 17:48:51,511 INFO L142 LiptonReduction]: Number of co-enabled transitions 364 [2021-03-25 17:48:51,515 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:48:51,515 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:48:51,515 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 31 [2021-03-25 17:48:51,516 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 232 flow [2021-03-25 17:48:51,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states 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 17:48:51,516 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:48:51,516 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 17:48:51,516 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 17:48:51,516 INFO L428 AbstractCegarLoop]: === Iteration 9 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-25 17:48:51,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:48:51,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1981746827, now seen corresponding path program 3 times [2021-03-25 17:48:51,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:48:51,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682821554] [2021-03-25 17:48:51,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:48:51,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:48:51,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:48:51,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:48:51,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:48:51,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:48:51,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:48:51,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:48:51,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:48:51,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:48:51,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:48:51,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:48:51,552 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 17:48:51,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682821554] [2021-03-25 17:48:51,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:48:51,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 17:48:51,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624372859] [2021-03-25 17:48:51,553 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 17:48:51,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:48:51,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 17:48:51,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-25 17:48:51,555 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 58 [2021-03-25 17:48:51,555 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 232 flow. Second operand has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states 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 17:48:51,555 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:48:51,555 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 58 [2021-03-25 17:48:51,555 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:48:51,665 INFO L129 PetriNetUnfolder]: 75/171 cut-off events. [2021-03-25 17:48:51,665 INFO L130 PetriNetUnfolder]: For 239/243 co-relation queries the response was YES. [2021-03-25 17:48:51,666 INFO L84 FinitePrefix]: Finished finitePrefix Result has 606 conditions, 171 events. 75/171 cut-off events. For 239/243 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 469 event pairs, 4 based on Foata normal form. 8/177 useless extension candidates. Maximal degree in co-relation 588. Up to 60 conditions per place. [2021-03-25 17:48:51,666 INFO L132 encePairwiseOnDemand]: 50/58 looper letters, 0 selfloop transitions, 0 changer transitions 50/50 dead transitions. [2021-03-25 17:48:51,666 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 50 transitions, 359 flow [2021-03-25 17:48:51,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 17:48:51,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 17:48:51,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 233 transitions. [2021-03-25 17:48:51,668 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5738916256157636 [2021-03-25 17:48:51,668 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 233 transitions. [2021-03-25 17:48:51,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 233 transitions. [2021-03-25 17:48:51,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:48:51,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 233 transitions. [2021-03-25 17:48:51,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 33.285714285714285) internal successors, (233), 7 states have internal predecessors, (233), 0 states have call successors, (0), 0 states 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 17:48:51,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 58.0) internal successors, (464), 8 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:48:51,670 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 58.0) internal successors, (464), 8 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 17:48:51,670 INFO L185 Difference]: Start difference. First operand has 47 places, 43 transitions, 232 flow. Second operand 7 states and 233 transitions. [2021-03-25 17:48:51,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 50 transitions, 359 flow [2021-03-25 17:48:51,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 50 transitions, 314 flow, removed 9 selfloop flow, removed 5 redundant places. [2021-03-25 17:48:51,673 INFO L241 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2021-03-25 17:48:51,673 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2021-03-25 17:48:51,673 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, 9 predicate places. [2021-03-25 17:48:51,673 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:48:51,674 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 0 transitions, 0 flow [2021-03-25 17:48:51,674 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 46 places, 0 transitions, 0 flow [2021-03-25 17:48:51,674 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 17:48:51,674 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 17:48:51,674 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 17:48:51,674 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 17:48:51,674 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 17:48:51,674 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:48:51,674 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:48:51,675 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-03-25 17:48:51,675 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 17:48:51,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states 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 17:48:51,676 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 17:48:51,680 INFO L202 PluginConnector]: Adding new model Fischer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 05:48:51 BasicIcfg [2021-03-25 17:48:51,680 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 17:48:51,681 INFO L168 Benchmark]: Toolchain (without parser) took 2092.88 ms. Allocated memory was 255.9 MB in the beginning and 358.6 MB in the end (delta: 102.8 MB). Free memory was 237.4 MB in the beginning and 333.7 MB in the end (delta: -96.3 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.0 GB. [2021-03-25 17:48:51,682 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.87 ms. Allocated memory is still 255.9 MB. Free memory was 238.5 MB in the beginning and 238.4 MB in the end (delta: 82.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 17:48:51,682 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.64 ms. Allocated memory is still 255.9 MB. Free memory was 237.3 MB in the beginning and 235.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 17:48:51,682 INFO L168 Benchmark]: Boogie Preprocessor took 12.90 ms. Allocated memory is still 255.9 MB. Free memory was 235.9 MB in the beginning and 234.9 MB in the end (delta: 978.4 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-03-25 17:48:51,682 INFO L168 Benchmark]: RCFGBuilder took 238.49 ms. Allocated memory is still 255.9 MB. Free memory was 234.8 MB in the beginning and 237.3 MB in the end (delta: -2.4 MB). Peak memory consumption was 19.6 MB. Max. memory is 16.0 GB. [2021-03-25 17:48:51,683 INFO L168 Benchmark]: TraceAbstraction took 1812.29 ms. Allocated memory was 255.9 MB in the beginning and 358.6 MB in the end (delta: 102.8 MB). Free memory was 236.8 MB in the beginning and 333.7 MB in the end (delta: -97.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.0 GB. [2021-03-25 17:48:51,686 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 0.87 ms. Allocated memory is still 255.9 MB. Free memory was 238.5 MB in the beginning and 238.4 MB in the end (delta: 82.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.64 ms. Allocated memory is still 255.9 MB. Free memory was 237.3 MB in the beginning and 235.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.90 ms. Allocated memory is still 255.9 MB. Free memory was 235.9 MB in the beginning and 234.9 MB in the end (delta: 978.4 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * RCFGBuilder took 238.49 ms. Allocated memory is still 255.9 MB. Free memory was 234.8 MB in the beginning and 237.3 MB in the end (delta: -2.4 MB). Peak memory consumption was 19.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1812.29 ms. Allocated memory was 255.9 MB in the beginning and 358.6 MB in the end (delta: 102.8 MB). Free memory was 236.8 MB in the beginning and 333.7 MB in the end (delta: -97.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 342.7ms, 48 PlacesBefore, 37 PlacesAfterwards, 43 TransitionsBefore, 32 TransitionsAfterwards, 818 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 9 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 11 TotalNumberOfCompositions, 1066 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 727, positive: 675, positive conditional: 0, positive unconditional: 675, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 425, positive: 398, positive conditional: 0, positive unconditional: 398, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 425, positive: 398, positive conditional: 0, positive unconditional: 398, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 425, positive: 378, positive conditional: 0, positive unconditional: 378, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 47, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 112, positive: 48, positive conditional: 0, positive unconditional: 48, negative: 64, negative conditional: 0, negative unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 727, positive: 277, positive conditional: 0, positive unconditional: 277, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 425, unknown conditional: 0, unknown unconditional: 425] , Statistics on independence cache: Total cache size (in pairs): 173, Positive cache size: 153, Positive conditional cache size: 0, Positive unconditional cache size: 153, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 64.4ms, 35 PlacesBefore, 34 PlacesAfterwards, 35 TransitionsBefore, 34 TransitionsAfterwards, 348 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 108 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 104, positive: 96, positive conditional: 0, positive unconditional: 96, negative: 8, negative conditional: 0, negative unconditional: 8, 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: 104, positive: 96, positive conditional: 0, positive unconditional: 96, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 173, Positive cache size: 153, Positive conditional cache size: 0, Positive unconditional cache size: 153, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 24.3ms, 36 PlacesBefore, 36 PlacesAfterwards, 41 TransitionsBefore, 41 TransitionsAfterwards, 380 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 28 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 28, positive: 26, positive conditional: 0, positive unconditional: 26, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, 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: 28, positive: 26, positive conditional: 0, positive unconditional: 26, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 173, Positive cache size: 153, Positive conditional cache size: 0, Positive unconditional cache size: 153, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 19.6ms, 37 PlacesBefore, 37 PlacesAfterwards, 40 TransitionsBefore, 40 TransitionsAfterwards, 352 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): 173, Positive cache size: 153, Positive conditional cache size: 0, Positive unconditional cache size: 153, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 23.3ms, 40 PlacesBefore, 40 PlacesAfterwards, 44 TransitionsBefore, 44 TransitionsAfterwards, 380 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 15 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 15, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: 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: 15, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 173, Positive cache size: 153, Positive conditional cache size: 0, Positive unconditional cache size: 153, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 21.4ms, 40 PlacesBefore, 40 PlacesAfterwards, 42 TransitionsBefore, 42 TransitionsAfterwards, 356 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): 173, Positive cache size: 153, Positive conditional cache size: 0, Positive unconditional cache size: 153, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 35.6ms, 43 PlacesBefore, 43 PlacesAfterwards, 43 TransitionsBefore, 43 TransitionsAfterwards, 380 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): 173, Positive cache size: 153, Positive conditional cache size: 0, Positive unconditional cache size: 153, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 25.0ms, 51 PlacesBefore, 48 PlacesAfterwards, 42 TransitionsBefore, 42 TransitionsAfterwards, 352 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): 173, Positive cache size: 153, Positive conditional cache size: 0, Positive unconditional cache size: 153, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 30.5ms, 47 PlacesBefore, 47 PlacesAfterwards, 43 TransitionsBefore, 43 TransitionsAfterwards, 364 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): 173, Positive cache size: 153, Positive conditional cache size: 0, Positive unconditional cache size: 153, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.7ms, 46 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): 173, Positive cache size: 153, Positive conditional cache size: 0, Positive unconditional cache size: 153, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20 - PositiveResult [Line: 78]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 57]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 42 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1736.1ms, OverallIterations: 9, TraceHistogramMax: 2, EmptinessCheckTime: 0.0ms, AutomataDifference: 679.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 445.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 93 SDtfs, 61 SDslu, 9 SDs, 0 SdLazy, 222 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 150.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 122.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=232occurred in iteration=8, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 8.3ms SsaConstructionTime, 42.3ms SatisfiabilityAnalysisTime, 169.4ms InterpolantComputationTime, 123 NumberOfCodeBlocks, 123 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 308 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 1/1 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...