/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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/showcase/FischerWithBug.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 14:38:04,592 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 14:38:04,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 14:38:04,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 14:38:04,618 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 14:38:04,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 14:38:04,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 14:38:04,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 14:38:04,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 14:38:04,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 14:38:04,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 14:38:04,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 14:38:04,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 14:38:04,633 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 14:38:04,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 14:38:04,635 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 14:38:04,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 14:38:04,638 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 14:38:04,639 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 14:38:04,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 14:38:04,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 14:38:04,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 14:38:04,645 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 14:38:04,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 14:38:04,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-10 14:38:04,653 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 14:38:04,654 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 14:38:04,655 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 14:38:04,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 14:38:04,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 14:38:04,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 14:38:04,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 14:38:04,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 14:38:04,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 14:38:04,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 14:38:04,657 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 14:38:04,660 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-NoLbe.epf [2021-06-10 14:38:04,687 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 14:38:04,688 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 14:38:04,688 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 14:38:04,689 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 14:38:04,689 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 14:38:04,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 14:38:04,689 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 14:38:04,689 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 14:38:04,689 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 14:38:04,689 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 14:38:04,689 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 14:38:04,689 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 14:38:04,689 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 14:38:04,689 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 14:38:04,690 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 14:38:04,690 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 14:38:04,690 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 14:38:04,690 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 14:38:04,690 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 14:38:04,690 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 14:38:04,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 14:38:04,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 14:38:04,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 14:38:04,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 14:38:04,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 14:38:04,691 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 14:38:04,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 14:38:04,691 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-10 14:38:04,691 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 14:38:04,691 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 14:38:04,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 14:38:04,925 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 14:38:04,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 14:38:04,928 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-10 14:38:04,929 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-10 14:38:04,929 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/FischerWithBug.bpl [2021-06-10 14:38:04,930 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/FischerWithBug.bpl' [2021-06-10 14:38:04,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 14:38:04,966 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-10 14:38:04,967 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 14:38:04,967 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 14:38:04,967 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 14:38:04,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:38:04" (1/1) ... [2021-06-10 14:38:04,981 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:38:04" (1/1) ... [2021-06-10 14:38:04,986 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 14:38:04,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 14:38:04,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 14:38:04,987 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 14:38:04,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:38:04" (1/1) ... [2021-06-10 14:38:04,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:38:04" (1/1) ... [2021-06-10 14:38:04,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:38:04" (1/1) ... [2021-06-10 14:38:04,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:38:04" (1/1) ... [2021-06-10 14:38:04,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:38:04" (1/1) ... [2021-06-10 14:38:04,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:38:04" (1/1) ... [2021-06-10 14:38:04,998 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:38:04" (1/1) ... [2021-06-10 14:38:04,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 14:38:05,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 14:38:05,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 14:38:05,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 14:38:05,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:38:04" (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 [2021-06-10 14:38:05,050 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process2 given in one single declaration [2021-06-10 14:38:05,050 INFO L130 BoogieDeclarations]: Found specification of procedure Process2 [2021-06-10 14:38:05,050 INFO L138 BoogieDeclarations]: Found implementation of procedure Process2 [2021-06-10 14:38:05,050 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process1 given in one single declaration [2021-06-10 14:38:05,050 INFO L130 BoogieDeclarations]: Found specification of procedure Process1 [2021-06-10 14:38:05,050 INFO L138 BoogieDeclarations]: Found implementation of procedure Process1 [2021-06-10 14:38:05,051 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-10 14:38:05,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 14:38:05,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 14:38:05,051 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Clock given in one single declaration [2021-06-10 14:38:05,051 INFO L130 BoogieDeclarations]: Found specification of procedure Clock [2021-06-10 14:38:05,051 INFO L138 BoogieDeclarations]: Found implementation of procedure Clock [2021-06-10 14:38:05,052 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 14:38:05,243 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 14:38:05,243 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-06-10 14:38:05,244 INFO L202 PluginConnector]: Adding new model FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 02:38:05 BoogieIcfgContainer [2021-06-10 14:38:05,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 14:38:05,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 14:38:05,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 14:38:05,247 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 14:38:05,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 02:38:04" (1/2) ... [2021-06-10 14:38:05,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644c6fbf and model type FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 02:38:05, skipping insertion in model container [2021-06-10 14:38:05,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 02:38:05" (2/2) ... [2021-06-10 14:38:05,249 INFO L111 eAbstractionObserver]: Analyzing ICFG FischerWithBug.bpl [2021-06-10 14:38:05,269 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 14:38:05,272 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-06-10 14:38:05,273 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 14:38:05,313 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:38:05,313 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:38:05,319 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:38:05,319 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:38:05,320 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:38:05,320 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:38:05,320 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:38:05,320 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:38:05,321 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:38:05,321 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:38:05,322 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:38:05,322 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:38:05,322 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:38:05,322 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:38:05,322 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:38:05,322 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:38:05,328 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:38:05,330 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 14:38:05,331 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-10 14:38:05,343 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-06-10 14:38:05,368 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 14:38:05,368 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 14:38:05,368 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 14:38:05,368 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 14:38:05,368 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 14:38:05,368 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 14:38:05,368 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 14:38:05,368 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 14:38:05,376 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 46 transitions, 107 flow [2021-06-10 14:38:05,393 INFO L129 PetriNetUnfolder]: 5/43 cut-off events. [2021-06-10 14:38:05,393 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 14:38:05,395 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 5/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 109 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-06-10 14:38:05,396 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 46 transitions, 107 flow [2021-06-10 14:38:05,403 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 43 transitions, 95 flow [2021-06-10 14:38:05,412 INFO L129 PetriNetUnfolder]: 1/18 cut-off events. [2021-06-10 14:38:05,412 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 14:38:05,412 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:38:05,413 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:38:05,413 INFO L428 AbstractCegarLoop]: === Iteration 1 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-10 14:38:05,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:38:05,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1128325677, now seen corresponding path program 1 times [2021-06-10 14:38:05,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:38:05,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455176914] [2021-06-10 14:38:05,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:38:05,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:38:05,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:05,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:38:05,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:38:05,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455176914] [2021-06-10 14:38:05,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:38:05,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 14:38:05,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329763843] [2021-06-10 14:38:05,528 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:38:05,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:38:05,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:38:05,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:38:05,538 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 46 [2021-06-10 14:38:05,540 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:05,540 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:38:05,540 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 46 [2021-06-10 14:38:05,541 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:38:05,577 INFO L129 PetriNetUnfolder]: 31/134 cut-off events. [2021-06-10 14:38:05,578 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 14:38:05,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 134 events. 31/134 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 493 event pairs, 4 based on Foata normal form. 41/164 useless extension candidates. Maximal degree in co-relation 177. Up to 30 conditions per place. [2021-06-10 14:38:05,580 INFO L132 encePairwiseOnDemand]: 34/46 looper letters, 8 selfloop transitions, 7 changer transitions 0/43 dead transitions. [2021-06-10 14:38:05,580 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 43 transitions, 125 flow [2021-06-10 14:38:05,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:38:05,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:38:05,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2021-06-10 14:38:05,592 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9057971014492754 [2021-06-10 14:38:05,592 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 125 transitions. [2021-06-10 14:38:05,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 125 transitions. [2021-06-10 14:38:05,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:38:05,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 125 transitions. [2021-06-10 14:38:05,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:05,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:05,598 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:05,600 INFO L185 Difference]: Start difference. First operand has 48 places, 43 transitions, 95 flow. Second operand 3 states and 125 transitions. [2021-06-10 14:38:05,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 43 transitions, 125 flow [2021-06-10 14:38:05,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 43 transitions, 122 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-10 14:38:05,604 INFO L241 Difference]: Finished difference. Result has 43 places, 43 transitions, 136 flow [2021-06-10 14:38:05,605 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2021-06-10 14:38:05,605 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, -5 predicate places. [2021-06-10 14:38:05,605 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 136 flow [2021-06-10 14:38:05,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:05,606 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:38:05,606 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:38:05,606 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 14:38:05,606 INFO L428 AbstractCegarLoop]: === Iteration 2 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-10 14:38:05,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:38:05,606 INFO L82 PathProgramCache]: Analyzing trace with hash 238928219, now seen corresponding path program 1 times [2021-06-10 14:38:05,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:38:05,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892771441] [2021-06-10 14:38:05,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:38:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:38:05,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:05,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:05,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:05,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:38:05,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:05,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:05,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:38:05,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892771441] [2021-06-10 14:38:05,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:38:05,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:38:05,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752070713] [2021-06-10 14:38:05,638 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:38:05,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:38:05,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:38:05,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:38:05,639 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 46 [2021-06-10 14:38:05,639 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:05,639 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:38:05,639 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 46 [2021-06-10 14:38:05,645 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:38:05,706 INFO L129 PetriNetUnfolder]: 97/297 cut-off events. [2021-06-10 14:38:05,706 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-06-10 14:38:05,709 INFO L84 FinitePrefix]: Finished finitePrefix Result has 593 conditions, 297 events. 97/297 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1537 event pairs, 20 based on Foata normal form. 4/273 useless extension candidates. Maximal degree in co-relation 580. Up to 100 conditions per place. [2021-06-10 14:38:05,710 INFO L132 encePairwiseOnDemand]: 37/46 looper letters, 11 selfloop transitions, 6 changer transitions 0/48 dead transitions. [2021-06-10 14:38:05,711 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 48 transitions, 180 flow [2021-06-10 14:38:05,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:38:05,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:38:05,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2021-06-10 14:38:05,712 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8188405797101449 [2021-06-10 14:38:05,712 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 113 transitions. [2021-06-10 14:38:05,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 113 transitions. [2021-06-10 14:38:05,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:38:05,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 113 transitions. [2021-06-10 14:38:05,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:05,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:05,714 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:05,714 INFO L185 Difference]: Start difference. First operand has 43 places, 43 transitions, 136 flow. Second operand 3 states and 113 transitions. [2021-06-10 14:38:05,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 48 transitions, 180 flow [2021-06-10 14:38:05,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 48 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 14:38:05,720 INFO L241 Difference]: Finished difference. Result has 45 places, 47 transitions, 168 flow [2021-06-10 14:38:05,720 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=45, PETRI_TRANSITIONS=47} [2021-06-10 14:38:05,721 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, -3 predicate places. [2021-06-10 14:38:05,721 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 47 transitions, 168 flow [2021-06-10 14:38:05,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:05,721 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:38:05,721 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:38:05,721 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 14:38:05,721 INFO L428 AbstractCegarLoop]: === Iteration 3 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-10 14:38:05,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:38:05,722 INFO L82 PathProgramCache]: Analyzing trace with hash -372247321, now seen corresponding path program 2 times [2021-06-10 14:38:05,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:38:05,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188863145] [2021-06-10 14:38:05,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:38:05,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:38:05,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:05,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:05,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:05,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:38:05,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:05,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:05,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:38:05,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188863145] [2021-06-10 14:38:05,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:38:05,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:38:05,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546426544] [2021-06-10 14:38:05,745 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:38:05,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:38:05,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:38:05,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:38:05,746 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 46 [2021-06-10 14:38:05,746 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:05,746 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:38:05,747 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 46 [2021-06-10 14:38:05,747 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:38:05,794 INFO L129 PetriNetUnfolder]: 86/281 cut-off events. [2021-06-10 14:38:05,794 INFO L130 PetriNetUnfolder]: For 117/127 co-relation queries the response was YES. [2021-06-10 14:38:05,796 INFO L84 FinitePrefix]: Finished finitePrefix Result has 625 conditions, 281 events. 86/281 cut-off events. For 117/127 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1162 event pairs, 14 based on Foata normal form. 24/291 useless extension candidates. Maximal degree in co-relation 612. Up to 105 conditions per place. [2021-06-10 14:38:05,798 INFO L132 encePairwiseOnDemand]: 37/46 looper letters, 13 selfloop transitions, 7 changer transitions 0/51 dead transitions. [2021-06-10 14:38:05,798 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 51 transitions, 216 flow [2021-06-10 14:38:05,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:38:05,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:38:05,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2021-06-10 14:38:05,799 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2021-06-10 14:38:05,799 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 115 transitions. [2021-06-10 14:38:05,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 115 transitions. [2021-06-10 14:38:05,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:38:05,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 115 transitions. [2021-06-10 14:38:05,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:05,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:05,801 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:05,801 INFO L185 Difference]: Start difference. First operand has 45 places, 47 transitions, 168 flow. Second operand 3 states and 115 transitions. [2021-06-10 14:38:05,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 51 transitions, 216 flow [2021-06-10 14:38:05,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 51 transitions, 206 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 14:38:05,804 INFO L241 Difference]: Finished difference. Result has 47 places, 49 transitions, 198 flow [2021-06-10 14:38:05,804 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=47, PETRI_TRANSITIONS=49} [2021-06-10 14:38:05,805 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, -1 predicate places. [2021-06-10 14:38:05,805 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 49 transitions, 198 flow [2021-06-10 14:38:05,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:05,805 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:38:05,805 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:38:05,805 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 14:38:05,805 INFO L428 AbstractCegarLoop]: === Iteration 4 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-10 14:38:05,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:38:05,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1543998482, now seen corresponding path program 1 times [2021-06-10 14:38:05,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:38:05,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467642548] [2021-06-10 14:38:05,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:38:05,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:38:05,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:05,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:05,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:05,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:38:05,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:05,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:05,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:38:05,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467642548] [2021-06-10 14:38:05,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:38:05,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:38:05,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649132091] [2021-06-10 14:38:05,823 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:38:05,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:38:05,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:38:05,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:38:05,824 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 46 [2021-06-10 14:38:05,824 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 49 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:05,824 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:38:05,824 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 46 [2021-06-10 14:38:05,824 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:38:05,865 INFO L129 PetriNetUnfolder]: 94/327 cut-off events. [2021-06-10 14:38:05,866 INFO L130 PetriNetUnfolder]: For 217/232 co-relation queries the response was YES. [2021-06-10 14:38:05,867 INFO L84 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 327 events. 94/327 cut-off events. For 217/232 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1480 event pairs, 16 based on Foata normal form. 7/322 useless extension candidates. Maximal degree in co-relation 776. Up to 86 conditions per place. [2021-06-10 14:38:05,868 INFO L132 encePairwiseOnDemand]: 38/46 looper letters, 14 selfloop transitions, 10 changer transitions 0/55 dead transitions. [2021-06-10 14:38:05,868 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 55 transitions, 270 flow [2021-06-10 14:38:05,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:38:05,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:38:05,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2021-06-10 14:38:05,870 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8188405797101449 [2021-06-10 14:38:05,870 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 113 transitions. [2021-06-10 14:38:05,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 113 transitions. [2021-06-10 14:38:05,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:38:05,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 113 transitions. [2021-06-10 14:38:05,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:05,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:05,872 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:05,872 INFO L185 Difference]: Start difference. First operand has 47 places, 49 transitions, 198 flow. Second operand 3 states and 113 transitions. [2021-06-10 14:38:05,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 55 transitions, 270 flow [2021-06-10 14:38:05,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 55 transitions, 254 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 14:38:05,875 INFO L241 Difference]: Finished difference. Result has 49 places, 53 transitions, 252 flow [2021-06-10 14:38:05,875 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=49, PETRI_TRANSITIONS=53} [2021-06-10 14:38:05,876 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 1 predicate places. [2021-06-10 14:38:05,876 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 53 transitions, 252 flow [2021-06-10 14:38:05,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:05,876 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:38:05,876 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:38:05,876 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 14:38:05,876 INFO L428 AbstractCegarLoop]: === Iteration 5 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-10 14:38:05,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:38:05,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1752436540, now seen corresponding path program 2 times [2021-06-10 14:38:05,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:38:05,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621145652] [2021-06-10 14:38:05,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:38:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:38:05,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:05,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:05,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:05,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:38:05,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:05,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:05,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:38:05,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621145652] [2021-06-10 14:38:05,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:38:05,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 14:38:05,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498455155] [2021-06-10 14:38:05,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 14:38:05,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:38:05,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 14:38:05,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 14:38:05,895 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 46 [2021-06-10 14:38:05,895 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 53 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:05,895 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:38:05,895 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 46 [2021-06-10 14:38:05,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:38:05,935 INFO L129 PetriNetUnfolder]: 86/313 cut-off events. [2021-06-10 14:38:05,935 INFO L130 PetriNetUnfolder]: For 422/445 co-relation queries the response was YES. [2021-06-10 14:38:05,936 INFO L84 FinitePrefix]: Finished finitePrefix Result has 844 conditions, 313 events. 86/313 cut-off events. For 422/445 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1262 event pairs, 13 based on Foata normal form. 17/313 useless extension candidates. Maximal degree in co-relation 829. Up to 81 conditions per place. [2021-06-10 14:38:05,938 INFO L132 encePairwiseOnDemand]: 38/46 looper letters, 14 selfloop transitions, 8 changer transitions 0/53 dead transitions. [2021-06-10 14:38:05,938 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 53 transitions, 282 flow [2021-06-10 14:38:05,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 14:38:05,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 14:38:05,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2021-06-10 14:38:05,939 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2021-06-10 14:38:05,939 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 115 transitions. [2021-06-10 14:38:05,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 115 transitions. [2021-06-10 14:38:05,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:38:05,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 115 transitions. [2021-06-10 14:38:05,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:05,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:05,941 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:05,941 INFO L185 Difference]: Start difference. First operand has 49 places, 53 transitions, 252 flow. Second operand 3 states and 115 transitions. [2021-06-10 14:38:05,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 53 transitions, 282 flow [2021-06-10 14:38:05,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 53 transitions, 266 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 14:38:05,944 INFO L241 Difference]: Finished difference. Result has 49 places, 51 transitions, 234 flow [2021-06-10 14:38:05,944 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=49, PETRI_TRANSITIONS=51} [2021-06-10 14:38:05,944 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 1 predicate places. [2021-06-10 14:38:05,944 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 51 transitions, 234 flow [2021-06-10 14:38:05,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:05,944 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:38:05,944 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:38:05,945 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 14:38:05,945 INFO L428 AbstractCegarLoop]: === Iteration 6 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-10 14:38:05,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:38:05,945 INFO L82 PathProgramCache]: Analyzing trace with hash 911674693, now seen corresponding path program 1 times [2021-06-10 14:38:05,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:38:05,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249201154] [2021-06-10 14:38:05,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:38:05,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:38:05,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:05,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:05,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:05,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:38:05,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:05,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 14:38:05,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:05,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:05,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:38:05,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249201154] [2021-06-10 14:38:05,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:38:05,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-10 14:38:05,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419045819] [2021-06-10 14:38:05,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 14:38:05,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:38:05,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 14:38:05,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 14:38:05,973 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 46 [2021-06-10 14:38:05,974 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 51 transitions, 234 flow. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:05,974 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:38:05,974 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 46 [2021-06-10 14:38:05,974 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:38:06,032 INFO L129 PetriNetUnfolder]: 220/527 cut-off events. [2021-06-10 14:38:06,032 INFO L130 PetriNetUnfolder]: For 232/238 co-relation queries the response was YES. [2021-06-10 14:38:06,034 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1243 conditions, 527 events. 220/527 cut-off events. For 232/238 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2174 event pairs, 40 based on Foata normal form. 18/524 useless extension candidates. Maximal degree in co-relation 1225. Up to 240 conditions per place. [2021-06-10 14:38:06,036 INFO L132 encePairwiseOnDemand]: 42/46 looper letters, 15 selfloop transitions, 3 changer transitions 0/56 dead transitions. [2021-06-10 14:38:06,036 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 56 transitions, 280 flow [2021-06-10 14:38:06,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 14:38:06,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 14:38:06,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2021-06-10 14:38:06,037 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7554347826086957 [2021-06-10 14:38:06,037 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 139 transitions. [2021-06-10 14:38:06,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 139 transitions. [2021-06-10 14:38:06,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:38:06,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 139 transitions. [2021-06-10 14:38:06,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:06,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:06,039 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:06,039 INFO L185 Difference]: Start difference. First operand has 49 places, 51 transitions, 234 flow. Second operand 4 states and 139 transitions. [2021-06-10 14:38:06,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 56 transitions, 280 flow [2021-06-10 14:38:06,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 56 transitions, 272 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 14:38:06,041 INFO L241 Difference]: Finished difference. Result has 52 places, 52 transitions, 240 flow [2021-06-10 14:38:06,042 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=240, PETRI_PLACES=52, PETRI_TRANSITIONS=52} [2021-06-10 14:38:06,042 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 4 predicate places. [2021-06-10 14:38:06,042 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 52 transitions, 240 flow [2021-06-10 14:38:06,042 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:06,042 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:38:06,042 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:38:06,042 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 14:38:06,042 INFO L428 AbstractCegarLoop]: === Iteration 7 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-10 14:38:06,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:38:06,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1284974098, now seen corresponding path program 1 times [2021-06-10 14:38:06,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:38:06,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278308224] [2021-06-10 14:38:06,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:38:06,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 14:38:06,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:06,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:06,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:06,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 14:38:06,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:06,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 14:38:06,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 14:38:06,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 14:38:06,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 14:38:06,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278308224] [2021-06-10 14:38:06,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 14:38:06,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-10 14:38:06,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909595432] [2021-06-10 14:38:06,068 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 14:38:06,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 14:38:06,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 14:38:06,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 14:38:06,069 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 46 [2021-06-10 14:38:06,069 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 52 transitions, 240 flow. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:06,070 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 14:38:06,070 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 46 [2021-06-10 14:38:06,070 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 14:38:06,126 INFO L129 PetriNetUnfolder]: 236/577 cut-off events. [2021-06-10 14:38:06,126 INFO L130 PetriNetUnfolder]: For 268/274 co-relation queries the response was YES. [2021-06-10 14:38:06,128 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1523 conditions, 577 events. 236/577 cut-off events. For 268/274 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2424 event pairs, 44 based on Foata normal form. 20/576 useless extension candidates. Maximal degree in co-relation 1503. Up to 275 conditions per place. [2021-06-10 14:38:06,130 INFO L132 encePairwiseOnDemand]: 42/46 looper letters, 14 selfloop transitions, 3 changer transitions 3/58 dead transitions. [2021-06-10 14:38:06,130 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 58 transitions, 302 flow [2021-06-10 14:38:06,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 14:38:06,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 14:38:06,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2021-06-10 14:38:06,131 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7554347826086957 [2021-06-10 14:38:06,132 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 139 transitions. [2021-06-10 14:38:06,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 139 transitions. [2021-06-10 14:38:06,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 14:38:06,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 139 transitions. [2021-06-10 14:38:06,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:06,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:06,133 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:06,133 INFO L185 Difference]: Start difference. First operand has 52 places, 52 transitions, 240 flow. Second operand 4 states and 139 transitions. [2021-06-10 14:38:06,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 58 transitions, 302 flow [2021-06-10 14:38:06,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 58 transitions, 292 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-06-10 14:38:06,136 INFO L241 Difference]: Finished difference. Result has 54 places, 53 transitions, 252 flow [2021-06-10 14:38:06,136 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=252, PETRI_PLACES=54, PETRI_TRANSITIONS=53} [2021-06-10 14:38:06,136 INFO L343 CegarLoopForPetriNet]: 48 programPoint places, 6 predicate places. [2021-06-10 14:38:06,136 INFO L480 AbstractCegarLoop]: Abstraction has has 54 places, 53 transitions, 252 flow [2021-06-10 14:38:06,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 14:38:06,136 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 14:38:06,136 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 14:38:06,137 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 14:38:06,137 INFO L428 AbstractCegarLoop]: === Iteration 8 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-10 14:38:06,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 14:38:06,137 INFO L82 PathProgramCache]: Analyzing trace with hash 748694471, now seen corresponding path program 2 times [2021-06-10 14:38:06,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 14:38:06,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409502448] [2021-06-10 14:38:06,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 14:38:06,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-10 14:38:06,143 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-10 14:38:06,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-10 14:38:06,149 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-10 14:38:06,160 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-10 14:38:06,160 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-10 14:38:06,161 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-10 14:38:06,173 INFO L202 PluginConnector]: Adding new model FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 02:38:06 BasicIcfg [2021-06-10 14:38:06,174 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 14:38:06,175 INFO L168 Benchmark]: Toolchain (without parser) took 1208.35 ms. Allocated memory is still 369.1 MB. Free memory was 348.9 MB in the beginning and 204.3 MB in the end (delta: 144.6 MB). Peak memory consumption was 147.7 MB. Max. memory is 16.0 GB. [2021-06-10 14:38:06,175 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.71 ms. Allocated memory is still 369.1 MB. Free memory was 350.0 MB in the beginning and 349.9 MB in the end (delta: 136.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 14:38:06,175 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.21 ms. Allocated memory is still 369.1 MB. Free memory was 348.7 MB in the beginning and 347.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 14:38:06,176 INFO L168 Benchmark]: Boogie Preprocessor took 12.52 ms. Allocated memory is still 369.1 MB. Free memory was 347.4 MB in the beginning and 346.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 14:38:06,176 INFO L168 Benchmark]: RCFGBuilder took 244.66 ms. Allocated memory is still 369.1 MB. Free memory was 346.2 MB in the beginning and 334.1 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-06-10 14:38:06,176 INFO L168 Benchmark]: TraceAbstraction took 928.18 ms. Allocated memory is still 369.1 MB. Free memory was 333.7 MB in the beginning and 204.3 MB in the end (delta: 129.3 MB). Peak memory consumption was 130.9 MB. Max. memory is 16.0 GB. [2021-06-10 14:38:06,178 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 0.71 ms. Allocated memory is still 369.1 MB. Free memory was 350.0 MB in the beginning and 349.9 MB in the end (delta: 136.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 19.21 ms. Allocated memory is still 369.1 MB. Free memory was 348.7 MB in the beginning and 347.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.52 ms. Allocated memory is still 369.1 MB. Free memory was 347.4 MB in the beginning and 346.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 244.66 ms. Allocated memory is still 369.1 MB. Free memory was 346.2 MB in the beginning and 334.1 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 928.18 ms. Allocated memory is still 369.1 MB. Free memory was 333.7 MB in the beginning and 204.3 MB in the end (delta: 129.3 MB). Peak memory consumption was 130.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 87]: assertion can be violated assertion can be violated We found a FailurePath: [L28] 0 critical := 0; VAL [critical=0] [L29] 0 clk := 0; VAL [clk=0, critical=0] [L30] 0 assume wait >= 1; VAL [clk=0, critical=0, wait=1] [L33] 0 assume wait >= delay; VAL [clk=0, critical=0, delay=1, wait=1] [L34] FORK 0 fork 0 Clock(); VAL [clk=0, critical=0, delay=1, wait=1] [L35] FORK 0 fork 1 Process1(); VAL [clk=0, critical=0, delay=1, wait=1] [L57] COND TRUE 2 lock != 1 VAL [clk=0, critical=0, delay=1, lock=0, wait=1] [L58] 2 deadline := clk + delay; VAL [clk=0, critical=0, deadline=1, delay=1, lock=0, wait=1] [L59] 2 assume lock == 0; VAL [clk=0, critical=0, deadline=1, delay=1, lock=0, wait=1] [L36] FORK 0 fork 2 Process2(); VAL [clk=0, critical=0, deadline=1, delay=1, lock=0, wait=1] [L78] COND TRUE 3 lock != 2 VAL [clk=0, critical=0, deadline=1, delay=1, lock=0, wait=1] [L79] 3 deadline := clk + delay; VAL [clk=0, critical=0, deadline=1, deadline=1, delay=1, lock=0, wait=1] [L80] 3 assume lock == 0; VAL [clk=0, critical=0, deadline=1, deadline=1, delay=1, lock=0, wait=1] [L60] 2 lock := 1; VAL [clk=0, critical=0, deadline=1, deadline=1, delay=1, lock=1, wait=1] [L61] 2 assume clk <= deadline; VAL [clk=0, critical=0, deadline=1, deadline=1, delay=1, lock=1, wait=1] [L62] 2 deadline := clk + wait; VAL [clk=0, critical=0, deadline=1, deadline=1, delay=1, lock=1, wait=1] [L44] 1 clk := clk + 1; VAL [clk=1, critical=0, deadline=1, deadline=1, delay=1, lock=1, wait=1] [L63] 2 assume clk >= deadline; VAL [clk=1, critical=0, deadline=1, deadline=1, delay=1, lock=1, wait=1] [L64] 2 assume lock == 1; VAL [clk=1, critical=0, deadline=1, deadline=1, delay=1, lock=1, wait=1] [L66] 2 assert critical == 0; VAL [clk=1, critical=0, deadline=1, deadline=1, delay=1, lock=1, wait=1] [L67] 2 critical := 1; VAL [clk=1, critical=1, deadline=1, deadline=1, delay=1, lock=1, wait=1] [L81] 3 lock := 2; VAL [clk=1, critical=1, deadline=1, deadline=1, delay=1, lock=2, wait=1] [L82] 3 assume clk <= deadline; VAL [clk=1, critical=1, deadline=1, deadline=1, delay=1, lock=2, wait=1] [L83] 3 deadline := clk + wait; VAL [clk=1, critical=1, deadline=2, deadline=1, delay=1, lock=2, wait=1] [L44] 1 clk := clk + 1; VAL [clk=2, critical=1, deadline=2, deadline=1, delay=1, lock=2, wait=1] [L84] 3 assume clk >= deadline; VAL [clk=2, critical=1, deadline=2, deadline=1, delay=1, lock=2, wait=1] [L85] 3 assume lock == 2; VAL [clk=2, critical=1, deadline=2, deadline=1, delay=1, lock=2, wait=1] [L87] 3 assert critical == 0; VAL [clk=2, critical=1, deadline=2, deadline=1, delay=1, lock=2, wait=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 42 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 8.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 796.4ms, OverallIterations: 8, TraceHistogramMax: 2, EmptinessCheckTime: 0.0ms, AutomataDifference: 451.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 35.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 80 SDtfs, 29 SDslu, 4 SDs, 0 SdLazy, 92 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 78.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=252occurred in iteration=4, InterpolantAutomatonStates: 23, 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: 10.4ms SsaConstructionTime, 34.7ms SatisfiabilityAnalysisTime, 133.9ms InterpolantComputationTime, 151 NumberOfCodeBlocks, 151 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 116 ConstructedInterpolants, 0 QuantifiedInterpolants, 222 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...