/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/ForkJoinExplained.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-11 09:27:20,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-11 09:27:20,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-11 09:27:20,354 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-11 09:27:20,354 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-11 09:27:20,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-11 09:27:20,356 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-11 09:27:20,358 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-11 09:27:20,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-11 09:27:20,360 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-11 09:27:20,361 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-11 09:27:20,362 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-11 09:27:20,362 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-11 09:27:20,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-11 09:27:20,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-11 09:27:20,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-11 09:27:20,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-11 09:27:20,367 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-11 09:27:20,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-11 09:27:20,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-11 09:27:20,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-11 09:27:20,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-11 09:27:20,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-11 09:27:20,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-11 09:27:20,378 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-11 09:27:20,378 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-11 09:27:20,379 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-11 09:27:20,379 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-11 09:27:20,380 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-11 09:27:20,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-11 09:27:20,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-11 09:27:20,381 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-11 09:27:20,382 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-11 09:27:20,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-11 09:27:20,383 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-11 09:27:20,383 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-11 09:27:20,384 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-11 09:27:20,384 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-11 09:27:20,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-11 09:27:20,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-11 09:27:20,392 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-11 09:27:20,395 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 [2021-06-11 09:27:20,430 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-11 09:27:20,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-11 09:27:20,433 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-11 09:27:20,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-11 09:27:20,434 INFO L138 SettingsManager]: * Use SBE=true [2021-06-11 09:27:20,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-11 09:27:20,434 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-11 09:27:20,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-11 09:27:20,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-11 09:27:20,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-11 09:27:20,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-11 09:27:20,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-11 09:27:20,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-11 09:27:20,436 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-11 09:27:20,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-11 09:27:20,436 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-11 09:27:20,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-11 09:27:20,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-11 09:27:20,437 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-11 09:27:20,437 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-11 09:27:20,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-11 09:27:20,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-11 09:27:20,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-11 09:27:20,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-11 09:27:20,438 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-11 09:27:20,438 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-11 09:27:20,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-11 09:27:20,438 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-11 09:27:20,438 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-11 09:27:20,438 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-11 09:27:20,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-11 09:27:20,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-11 09:27:20,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-11 09:27:20,795 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-11 09:27:20,796 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-11 09:27:20,796 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/ForkJoinExplained.bpl [2021-06-11 09:27:20,797 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/ForkJoinExplained.bpl' [2021-06-11 09:27:20,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-11 09:27:20,831 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-11 09:27:20,831 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-11 09:27:20,832 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-11 09:27:20,832 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-11 09:27:20,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:27:20" (1/1) ... [2021-06-11 09:27:20,851 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:27:20" (1/1) ... [2021-06-11 09:27:20,857 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-11 09:27:20,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-11 09:27:20,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-11 09:27:20,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-11 09:27:20,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:27:20" (1/1) ... [2021-06-11 09:27:20,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:27:20" (1/1) ... [2021-06-11 09:27:20,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:27:20" (1/1) ... [2021-06-11 09:27:20,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:27:20" (1/1) ... [2021-06-11 09:27:20,868 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:27:20" (1/1) ... [2021-06-11 09:27:20,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:27:20" (1/1) ... [2021-06-11 09:27:20,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:27:20" (1/1) ... [2021-06-11 09:27:20,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-11 09:27:20,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-11 09:27:20,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-11 09:27:20,872 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-11 09:27:20,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:27:20" (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 [2021-06-11 09:27:20,947 INFO L124 BoogieDeclarations]: Specification and implementation of procedure foo given in one single declaration [2021-06-11 09:27:20,947 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-06-11 09:27:20,947 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-06-11 09:27:20,948 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-11 09:27:20,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-11 09:27:20,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-11 09:27:20,949 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-11 09:27:21,073 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-11 09:27:21,073 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-11 09:27:21,074 INFO L202 PluginConnector]: Adding new model ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 09:27:21 BoogieIcfgContainer [2021-06-11 09:27:21,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-11 09:27:21,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-11 09:27:21,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-11 09:27:21,080 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-11 09:27:21,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 09:27:20" (1/2) ... [2021-06-11 09:27:21,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2430f630 and model type ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.06 09:27:21, skipping insertion in model container [2021-06-11 09:27:21,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 09:27:21" (2/2) ... [2021-06-11 09:27:21,083 INFO L111 eAbstractionObserver]: Analyzing ICFG ForkJoinExplained.bpl [2021-06-11 09:27:21,091 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-11 09:27:21,098 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-06-11 09:27:21,099 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-11 09:27:21,117 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:27:21,117 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:27:21,117 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:27:21,118 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:27:21,118 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:27:21,118 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:27:21,118 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:27:21,119 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:27:21,119 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:27:21,119 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:27:21,119 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:27:21,120 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:27:21,120 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:27:21,120 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:27:21,121 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:27:21,121 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:27:21,123 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:27:21,127 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:27:21,134 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-11 09:27:21,150 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-06-11 09:27:21,167 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:27:21,168 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:27:21,168 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:27:21,168 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:27:21,168 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:27:21,168 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:27:21,168 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:27:21,168 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:27:21,177 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 34 places, 31 transitions, 84 flow [2021-06-11 09:27:21,200 INFO L129 PetriNetUnfolder]: 3/33 cut-off events. [2021-06-11 09:27:21,200 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-06-11 09:27:21,203 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 33 events. 3/33 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 23. Up to 3 conditions per place. [2021-06-11 09:27:21,203 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 31 transitions, 84 flow [2021-06-11 09:27:21,214 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 27 transitions, 72 flow [2021-06-11 09:27:21,216 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:27:21,226 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 27 transitions, 72 flow [2021-06-11 09:27:21,246 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 27 transitions, 72 flow [2021-06-11 09:27:21,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 27 transitions, 72 flow [2021-06-11 09:27:21,274 INFO L129 PetriNetUnfolder]: 3/31 cut-off events. [2021-06-11 09:27:21,274 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-06-11 09:27:21,275 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 31 events. 3/31 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 56 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 23. Up to 3 conditions per place. [2021-06-11 09:27:21,277 INFO L151 LiptonReduction]: Number of co-enabled transitions 252 [2021-06-11 09:27:21,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:21,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:27:21,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:21,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:27:21,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:21,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:27:21,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:21,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:27:21,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:21,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:27:21,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:21,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:27:21,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:21,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:27:21,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:21,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:27:21,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:21,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:27:21,841 INFO L163 LiptonReduction]: Checked pairs total: 196 [2021-06-11 09:27:21,841 INFO L165 LiptonReduction]: Total number of compositions: 17 [2021-06-11 09:27:21,847 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 632 [2021-06-11 09:27:21,865 INFO L129 PetriNetUnfolder]: 0/8 cut-off events. [2021-06-11 09:27:21,866 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-06-11 09:27:21,866 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:27:21,866 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-06-11 09:27:21,867 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:27:21,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:27:21,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1317832480, now seen corresponding path program 1 times [2021-06-11 09:27:21,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:27:21,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208640610] [2021-06-11 09:27:21,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:27:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:27:21,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:21,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:27:21,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:21,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:27:21,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:21,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:27:22,007 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-06-11 09:27:22,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:27:22,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:27:22,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208640610] [2021-06-11 09:27:22,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:27:22,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-11 09:27:22,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656411039] [2021-06-11 09:27:22,025 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-11 09:27:22,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:27:22,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-11 09:27:22,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-11 09:27:22,038 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 48 [2021-06-11 09:27:22,040 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 13 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:27:22,040 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:27:22,040 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 48 [2021-06-11 09:27:22,041 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:27:22,098 INFO L129 PetriNetUnfolder]: 5/23 cut-off events. [2021-06-11 09:27:22,098 INFO L130 PetriNetUnfolder]: For 12/13 co-relation queries the response was YES. [2021-06-11 09:27:22,098 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 23 events. 5/23 cut-off events. For 12/13 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 50 event pairs, 0 based on Foata normal form. 1/19 useless extension candidates. Maximal degree in co-relation 32. Up to 7 conditions per place. [2021-06-11 09:27:22,099 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 6 selfloop transitions, 8 changer transitions 0/20 dead transitions. [2021-06-11 09:27:22,099 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 20 transitions, 89 flow [2021-06-11 09:27:22,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-11 09:27:22,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-06-11 09:27:22,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 189 transitions. [2021-06-11 09:27:22,110 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.65625 [2021-06-11 09:27:22,110 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 189 transitions. [2021-06-11 09:27:22,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 189 transitions. [2021-06-11 09:27:22,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:27:22,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 189 transitions. [2021-06-11 09:27:22,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.5) internal successors, (189), 6 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:27:22,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 48.0) internal successors, (336), 7 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:27:22,120 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 48.0) internal successors, (336), 7 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:27:22,121 INFO L185 Difference]: Start difference. First operand has 18 places, 13 transitions, 44 flow. Second operand 6 states and 189 transitions. [2021-06-11 09:27:22,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 20 transitions, 89 flow [2021-06-11 09:27:22,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 20 transitions, 75 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-06-11 09:27:22,126 INFO L241 Difference]: Finished difference. Result has 20 places, 18 transitions, 68 flow [2021-06-11 09:27:22,127 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=68, PETRI_PLACES=20, PETRI_TRANSITIONS=18} [2021-06-11 09:27:22,128 INFO L343 CegarLoopForPetriNet]: 18 programPoint places, 2 predicate places. [2021-06-11 09:27:22,128 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:27:22,128 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 20 places, 18 transitions, 68 flow [2021-06-11 09:27:22,129 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 20 places, 18 transitions, 68 flow [2021-06-11 09:27:22,129 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 18 transitions, 68 flow [2021-06-11 09:27:22,133 INFO L129 PetriNetUnfolder]: 3/19 cut-off events. [2021-06-11 09:27:22,133 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-06-11 09:27:22,133 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 19 events. 3/19 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 33 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 2. Up to 7 conditions per place. [2021-06-11 09:27:22,133 INFO L151 LiptonReduction]: Number of co-enabled transitions 14 [2021-06-11 09:27:22,134 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:27:22,135 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:27:22,135 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7 [2021-06-11 09:27:22,136 INFO L480 AbstractCegarLoop]: Abstraction has has 20 places, 18 transitions, 68 flow [2021-06-11 09:27:22,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:27:22,136 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:27:22,136 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-06-11 09:27:22,136 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-11 09:27:22,137 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:27:22,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:27:22,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1317832435, now seen corresponding path program 1 times [2021-06-11 09:27:22,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:27:22,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065732339] [2021-06-11 09:27:22,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:27:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:27:22,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:22,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:27:22,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:22,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 09:27:22,172 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-06-11 09:27:22,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:27:22,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:27:22,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065732339] [2021-06-11 09:27:22,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:27:22,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:27:22,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686159696] [2021-06-11 09:27:22,181 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-11 09:27:22,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:27:22,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-11 09:27:22,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-11 09:27:22,183 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 48 [2021-06-11 09:27:22,183 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 18 transitions, 68 flow. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 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) [2021-06-11 09:27:22,183 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:27:22,184 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 48 [2021-06-11 09:27:22,184 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:27:22,206 INFO L129 PetriNetUnfolder]: 5/25 cut-off events. [2021-06-11 09:27:22,206 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-06-11 09:27:22,206 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 25 events. 5/25 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 54 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 26. Up to 13 conditions per place. [2021-06-11 09:27:22,207 INFO L132 encePairwiseOnDemand]: 43/48 looper letters, 9 selfloop transitions, 5 changer transitions 0/21 dead transitions. [2021-06-11 09:27:22,207 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 21 transitions, 106 flow [2021-06-11 09:27:22,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-11 09:27:22,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-11 09:27:22,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2021-06-11 09:27:22,209 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2021-06-11 09:27:22,209 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 130 transitions. [2021-06-11 09:27:22,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 130 transitions. [2021-06-11 09:27:22,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:27:22,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 130 transitions. [2021-06-11 09:27:22,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 26.0) internal successors, (130), 5 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) [2021-06-11 09:27:22,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 48.0) internal successors, (288), 6 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:27:22,211 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 48.0) internal successors, (288), 6 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:27:22,211 INFO L185 Difference]: Start difference. First operand has 20 places, 18 transitions, 68 flow. Second operand 5 states and 130 transitions. [2021-06-11 09:27:22,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 21 transitions, 106 flow [2021-06-11 09:27:22,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 21 transitions, 101 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-11 09:27:22,213 INFO L241 Difference]: Finished difference. Result has 24 places, 20 transitions, 88 flow [2021-06-11 09:27:22,213 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=88, PETRI_PLACES=24, PETRI_TRANSITIONS=20} [2021-06-11 09:27:22,213 INFO L343 CegarLoopForPetriNet]: 18 programPoint places, 6 predicate places. [2021-06-11 09:27:22,214 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:27:22,214 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 24 places, 20 transitions, 88 flow [2021-06-11 09:27:22,214 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 24 places, 20 transitions, 88 flow [2021-06-11 09:27:22,215 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 20 transitions, 88 flow [2021-06-11 09:27:22,218 INFO L129 PetriNetUnfolder]: 4/23 cut-off events. [2021-06-11 09:27:22,218 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-06-11 09:27:22,218 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 23 events. 4/23 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 51 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 26. Up to 7 conditions per place. [2021-06-11 09:27:22,219 INFO L151 LiptonReduction]: Number of co-enabled transitions 10 [2021-06-11 09:27:22,220 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:27:22,220 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:27:22,220 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-06-11 09:27:22,221 INFO L480 AbstractCegarLoop]: Abstraction has has 24 places, 20 transitions, 88 flow [2021-06-11 09:27:22,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 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) [2021-06-11 09:27:22,221 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:27:22,221 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-06-11 09:27:22,222 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-11 09:27:22,222 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:27:22,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:27:22,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1318408105, now seen corresponding path program 1 times [2021-06-11 09:27:22,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:27:22,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729267945] [2021-06-11 09:27:22,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:27:22,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:27:22,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:22,234 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:27:22,234 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:22,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:27:22,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:22,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:27:22,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:27:22,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729267945] [2021-06-11 09:27:22,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:27:22,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 09:27:22,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425535913] [2021-06-11 09:27:22,239 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:27:22,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:27:22,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:27:22,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:27:22,240 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 48 [2021-06-11 09:27:22,240 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:27:22,240 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:27:22,240 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 48 [2021-06-11 09:27:22,241 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:27:22,244 INFO L129 PetriNetUnfolder]: 1/10 cut-off events. [2021-06-11 09:27:22,245 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-06-11 09:27:22,245 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 10 events. 1/10 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 8 event pairs, 0 based on Foata normal form. 3/13 useless extension candidates. Maximal degree in co-relation 21. Up to 4 conditions per place. [2021-06-11 09:27:22,245 INFO L132 encePairwiseOnDemand]: 45/48 looper letters, 0 selfloop transitions, 1 changer transitions 1/10 dead transitions. [2021-06-11 09:27:22,245 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 10 transitions, 53 flow [2021-06-11 09:27:22,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:27:22,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:27:22,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2021-06-11 09:27:22,247 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9375 [2021-06-11 09:27:22,247 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 135 transitions. [2021-06-11 09:27:22,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 135 transitions. [2021-06-11 09:27:22,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:27:22,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 135 transitions. [2021-06-11 09:27:22,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:27:22,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:27:22,248 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:27:22,248 INFO L185 Difference]: Start difference. First operand has 24 places, 20 transitions, 88 flow. Second operand 3 states and 135 transitions. [2021-06-11 09:27:22,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 10 transitions, 53 flow [2021-06-11 09:27:22,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 10 transitions, 39 flow, removed 2 selfloop flow, removed 5 redundant places. [2021-06-11 09:27:22,249 INFO L241 Difference]: Finished difference. Result has 17 places, 9 transitions, 37 flow [2021-06-11 09:27:22,250 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=37, PETRI_PLACES=17, PETRI_TRANSITIONS=9} [2021-06-11 09:27:22,250 INFO L343 CegarLoopForPetriNet]: 18 programPoint places, -1 predicate places. [2021-06-11 09:27:22,250 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:27:22,250 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 17 places, 9 transitions, 37 flow [2021-06-11 09:27:22,250 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 17 places, 9 transitions, 37 flow [2021-06-11 09:27:22,251 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 16 places, 9 transitions, 37 flow [2021-06-11 09:27:22,253 INFO L129 PetriNetUnfolder]: 1/10 cut-off events. [2021-06-11 09:27:22,253 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:27:22,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24 conditions, 10 events. 1/10 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 8 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 13. Up to 4 conditions per place. [2021-06-11 09:27:22,253 INFO L151 LiptonReduction]: Number of co-enabled transitions 4 [2021-06-11 09:27:22,254 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:27:22,254 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:27:22,254 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4 [2021-06-11 09:27:22,255 INFO L480 AbstractCegarLoop]: Abstraction has has 16 places, 9 transitions, 37 flow [2021-06-11 09:27:22,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:27:22,255 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:27:22,255 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:27:22,255 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-11 09:27:22,256 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:27:22,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:27:22,256 INFO L82 PathProgramCache]: Analyzing trace with hash 2096867767, now seen corresponding path program 1 times [2021-06-11 09:27:22,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:27:22,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517171408] [2021-06-11 09:27:22,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:27:22,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:27:22,294 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:22,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:27:22,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:22,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 09:27:22,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:22,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:27:22,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:22,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 09:27:22,336 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-06-11 09:27:22,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:27:22,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:27:22,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517171408] [2021-06-11 09:27:22,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:27:22,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-11 09:27:22,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073601122] [2021-06-11 09:27:22,347 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-11 09:27:22,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:27:22,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-11 09:27:22,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-06-11 09:27:22,350 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 48 [2021-06-11 09:27:22,351 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 9 transitions, 37 flow. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:27:22,351 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:27:22,351 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 48 [2021-06-11 09:27:22,351 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:27:22,378 INFO L129 PetriNetUnfolder]: 1/13 cut-off events. [2021-06-11 09:27:22,378 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-06-11 09:27:22,378 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 13 events. 1/13 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 19 event pairs, 0 based on Foata normal form. 1/14 useless extension candidates. Maximal degree in co-relation 17. Up to 5 conditions per place. [2021-06-11 09:27:22,378 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 3 selfloop transitions, 5 changer transitions 2/11 dead transitions. [2021-06-11 09:27:22,378 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 11 transitions, 66 flow [2021-06-11 09:27:22,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-11 09:27:22,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-11 09:27:22,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2021-06-11 09:27:22,380 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.47023809523809523 [2021-06-11 09:27:22,380 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 158 transitions. [2021-06-11 09:27:22,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 158 transitions. [2021-06-11 09:27:22,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:27:22,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 158 transitions. [2021-06-11 09:27:22,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:27:22,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:27:22,382 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:27:22,382 INFO L185 Difference]: Start difference. First operand has 16 places, 9 transitions, 37 flow. Second operand 7 states and 158 transitions. [2021-06-11 09:27:22,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 11 transitions, 66 flow [2021-06-11 09:27:22,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 11 transitions, 64 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 09:27:22,384 INFO L241 Difference]: Finished difference. Result has 23 places, 9 transitions, 52 flow [2021-06-11 09:27:22,384 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=52, PETRI_PLACES=23, PETRI_TRANSITIONS=9} [2021-06-11 09:27:22,384 INFO L343 CegarLoopForPetriNet]: 18 programPoint places, 5 predicate places. [2021-06-11 09:27:22,384 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:27:22,384 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 23 places, 9 transitions, 52 flow [2021-06-11 09:27:22,385 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 23 places, 9 transitions, 52 flow [2021-06-11 09:27:22,385 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 21 places, 9 transitions, 52 flow [2021-06-11 09:27:22,387 INFO L129 PetriNetUnfolder]: 1/11 cut-off events. [2021-06-11 09:27:22,387 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-06-11 09:27:22,387 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 11 events. 1/11 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 0 based on Foata normal form. 0/11 useless extension candidates. Maximal degree in co-relation 29. Up to 5 conditions per place. [2021-06-11 09:27:22,388 INFO L151 LiptonReduction]: Number of co-enabled transitions 2 [2021-06-11 09:27:22,388 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:27:22,388 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:27:22,388 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4 [2021-06-11 09:27:22,389 INFO L480 AbstractCegarLoop]: Abstraction has has 21 places, 9 transitions, 52 flow [2021-06-11 09:27:22,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:27:22,389 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:27:22,390 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:27:22,390 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-11 09:27:22,390 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:27:22,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:27:22,390 INFO L82 PathProgramCache]: Analyzing trace with hash 2079010837, now seen corresponding path program 2 times [2021-06-11 09:27:22,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:27:22,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119568200] [2021-06-11 09:27:22,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:27:22,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:27:22,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:22,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:27:22,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:22,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 09:27:22,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:22,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 09:27:22,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:22,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 09:27:22,457 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-06-11 09:27:22,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:27:22,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:27:22,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119568200] [2021-06-11 09:27:22,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:27:22,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-11 09:27:22,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510130879] [2021-06-11 09:27:22,469 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-11 09:27:22,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:27:22,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-11 09:27:22,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-06-11 09:27:22,470 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 48 [2021-06-11 09:27:22,470 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 9 transitions, 52 flow. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:27:22,471 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:27:22,471 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 48 [2021-06-11 09:27:22,471 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:27:22,505 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-06-11 09:27:22,505 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-06-11 09:27:22,505 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 11 events. 0/11 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 7 event pairs, 0 based on Foata normal form. 1/12 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-06-11 09:27:22,506 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 2 selfloop transitions, 4 changer transitions 3/10 dead transitions. [2021-06-11 09:27:22,506 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 10 transitions, 79 flow [2021-06-11 09:27:22,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-11 09:27:22,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-11 09:27:22,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2021-06-11 09:27:22,507 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.46726190476190477 [2021-06-11 09:27:22,507 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 157 transitions. [2021-06-11 09:27:22,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 157 transitions. [2021-06-11 09:27:22,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:27:22,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 157 transitions. [2021-06-11 09:27:22,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:27:22,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:27:22,510 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:27:22,510 INFO L185 Difference]: Start difference. First operand has 21 places, 9 transitions, 52 flow. Second operand 7 states and 157 transitions. [2021-06-11 09:27:22,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 10 transitions, 79 flow [2021-06-11 09:27:22,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 10 transitions, 65 flow, removed 1 selfloop flow, removed 5 redundant places. [2021-06-11 09:27:22,511 INFO L241 Difference]: Finished difference. Result has 23 places, 7 transitions, 38 flow [2021-06-11 09:27:22,511 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=38, PETRI_PLACES=23, PETRI_TRANSITIONS=7} [2021-06-11 09:27:22,511 INFO L343 CegarLoopForPetriNet]: 18 programPoint places, 5 predicate places. [2021-06-11 09:27:22,512 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:27:22,512 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 23 places, 7 transitions, 38 flow [2021-06-11 09:27:22,512 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 23 places, 7 transitions, 38 flow [2021-06-11 09:27:22,512 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 7 transitions, 38 flow [2021-06-11 09:27:22,514 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-06-11 09:27:22,514 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-06-11 09:27:22,514 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 7 events. 0/7 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 0/7 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-06-11 09:27:22,515 INFO L151 LiptonReduction]: Number of co-enabled transitions 0 [2021-06-11 09:27:22,515 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:27:22,515 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:27:22,515 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 3 [2021-06-11 09:27:22,516 INFO L480 AbstractCegarLoop]: Abstraction has has 20 places, 7 transitions, 38 flow [2021-06-11 09:27:22,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:27:22,516 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:27:22,516 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:27:22,517 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-11 09:27:22,517 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:27:22,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:27:22,517 INFO L82 PathProgramCache]: Analyzing trace with hash 2079039667, now seen corresponding path program 3 times [2021-06-11 09:27:22,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:27:22,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797338192] [2021-06-11 09:27:22,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:27:22,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:27:22,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:22,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:27:22,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:22,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 09:27:22,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:22,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 09:27:22,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:27:22,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 09:27:22,569 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-06-11 09:27:22,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 09:27:22,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:27:22,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797338192] [2021-06-11 09:27:22,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:27:22,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-11 09:27:22,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576656374] [2021-06-11 09:27:22,578 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-11 09:27:22,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:27:22,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-11 09:27:22,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-06-11 09:27:22,579 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 48 [2021-06-11 09:27:22,580 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 7 transitions, 38 flow. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:27:22,580 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:27:22,580 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 48 [2021-06-11 09:27:22,580 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:27:22,589 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-06-11 09:27:22,590 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-06-11 09:27:22,590 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 6 events. 0/6 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/7 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-06-11 09:27:22,590 INFO L132 encePairwiseOnDemand]: 42/48 looper letters, 0 selfloop transitions, 0 changer transitions 6/6 dead transitions. [2021-06-11 09:27:22,590 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 6 transitions, 42 flow [2021-06-11 09:27:22,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-11 09:27:22,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-11 09:27:22,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2021-06-11 09:27:22,591 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.45535714285714285 [2021-06-11 09:27:22,591 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 153 transitions. [2021-06-11 09:27:22,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 153 transitions. [2021-06-11 09:27:22,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:27:22,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 153 transitions. [2021-06-11 09:27:22,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:27:22,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:27:22,593 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 48.0) internal successors, (384), 8 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:27:22,594 INFO L185 Difference]: Start difference. First operand has 20 places, 7 transitions, 38 flow. Second operand 7 states and 153 transitions. [2021-06-11 09:27:22,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 6 transitions, 42 flow [2021-06-11 09:27:22,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 6 transitions, 28 flow, removed 1 selfloop flow, removed 7 redundant places. [2021-06-11 09:27:22,594 INFO L241 Difference]: Finished difference. Result has 18 places, 0 transitions, 0 flow [2021-06-11 09:27:22,594 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=18, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=18, PETRI_TRANSITIONS=0} [2021-06-11 09:27:22,595 INFO L343 CegarLoopForPetriNet]: 18 programPoint places, 0 predicate places. [2021-06-11 09:27:22,595 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:27:22,595 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 18 places, 0 transitions, 0 flow [2021-06-11 09:27:22,595 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 18 places, 0 transitions, 0 flow [2021-06-11 09:27:22,595 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-06-11 09:27:22,595 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-06-11 09:27:22,595 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 09:27:22,595 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. [2021-06-11 09:27:22,596 INFO L151 LiptonReduction]: Number of co-enabled transitions 0 [2021-06-11 09:27:22,596 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 09:27:22,596 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:27:22,596 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-06-11 09:27:22,597 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-06-11 09:27:22,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 7 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 09:27:22,597 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-11 09:27:22,600 INFO L202 PluginConnector]: Adding new model ForkJoinExplained.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.06 09:27:22 BasicIcfg [2021-06-11 09:27:22,601 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-11 09:27:22,601 INFO L168 Benchmark]: Toolchain (without parser) took 1770.70 ms. Allocated memory is still 335.5 MB. Free memory was 315.9 MB in the beginning and 171.3 MB in the end (delta: 144.6 MB). Peak memory consumption was 149.0 MB. Max. memory is 16.0 GB. [2021-06-11 09:27:22,602 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 335.5 MB. Free memory is still 316.9 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-11 09:27:22,602 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.20 ms. Allocated memory is still 335.5 MB. Free memory was 315.8 MB in the beginning and 314.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-06-11 09:27:22,602 INFO L168 Benchmark]: Boogie Preprocessor took 12.65 ms. Allocated memory is still 335.5 MB. Free memory was 314.4 MB in the beginning and 313.5 MB in the end (delta: 884.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-11 09:27:22,602 INFO L168 Benchmark]: RCFGBuilder took 202.46 ms. Allocated memory is still 335.5 MB. Free memory was 313.4 MB in the beginning and 303.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-06-11 09:27:22,603 INFO L168 Benchmark]: TraceAbstraction took 1523.58 ms. Allocated memory is still 335.5 MB. Free memory was 303.3 MB in the beginning and 171.3 MB in the end (delta: 132.0 MB). Peak memory consumption was 134.3 MB. Max. memory is 16.0 GB. [2021-06-11 09:27:22,604 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 0.15 ms. Allocated memory is still 335.5 MB. Free memory is still 316.9 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 26.20 ms. Allocated memory is still 335.5 MB. Free memory was 315.8 MB in the beginning and 314.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.65 ms. Allocated memory is still 335.5 MB. Free memory was 314.4 MB in the beginning and 313.5 MB in the end (delta: 884.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 202.46 ms. Allocated memory is still 335.5 MB. Free memory was 313.4 MB in the beginning and 303.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1523.58 ms. Allocated memory is still 335.5 MB. Free memory was 303.3 MB in the beginning and 171.3 MB in the end (delta: 132.0 MB). Peak memory consumption was 134.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 596.0ms, 30 PlacesBefore, 18 PlacesAfterwards, 27 TransitionsBefore, 13 TransitionsAfterwards, 252 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 10 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 17 TotalNumberOfCompositions, 196 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 178, positive: 174, positive conditional: 0, positive unconditional: 174, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 160, positive: 156, positive conditional: 0, positive unconditional: 156, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 160, positive: 156, positive conditional: 0, positive unconditional: 156, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 160, positive: 153, positive conditional: 0, positive unconditional: 153, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 7, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 46, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 178, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 160, unknown conditional: 0, unknown unconditional: 160] , Statistics on independence cache: Total cache size (in pairs): 230, Positive cache size: 226, Positive conditional cache size: 0, Positive unconditional cache size: 226, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.0ms, 20 PlacesBefore, 20 PlacesAfterwards, 18 TransitionsBefore, 18 TransitionsAfterwards, 14 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): 230, Positive cache size: 226, Positive conditional cache size: 0, Positive unconditional cache size: 226, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.7ms, 24 PlacesBefore, 24 PlacesAfterwards, 20 TransitionsBefore, 20 TransitionsAfterwards, 10 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): 230, Positive cache size: 226, Positive conditional cache size: 0, Positive unconditional cache size: 226, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.6ms, 17 PlacesBefore, 16 PlacesAfterwards, 9 TransitionsBefore, 9 TransitionsAfterwards, 4 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 230, Positive cache size: 226, Positive conditional cache size: 0, Positive unconditional cache size: 226, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.5ms, 23 PlacesBefore, 21 PlacesAfterwards, 9 TransitionsBefore, 9 TransitionsAfterwards, 2 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 230, Positive cache size: 226, Positive conditional cache size: 0, Positive unconditional cache size: 226, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1ms, 23 PlacesBefore, 20 PlacesAfterwards, 7 TransitionsBefore, 7 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): 230, Positive cache size: 226, Positive conditional cache size: 0, Positive unconditional cache size: 226, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.8ms, 18 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): 230, Positive cache size: 226, Positive conditional cache size: 0, Positive unconditional cache size: 226, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - PositiveResult [Line: 70]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 55]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 61]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 21 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1434.1ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 229.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 693.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 22 SDtfs, 30 SDslu, 18 SDs, 0 SdLazy, 83 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 68.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 174.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=2, InterpolantAutomatonStates: 35, 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: 6.3ms SsaConstructionTime, 43.7ms SatisfiabilityAnalysisTime, 321.4ms InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 231 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...