/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/showcase/FischerWithBug.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 22:34:35,751 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 22:34:35,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 22:34:35,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 22:34:35,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 22:34:35,792 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 22:34:35,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 22:34:35,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 22:34:35,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 22:34:35,805 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 22:34:35,806 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 22:34:35,807 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 22:34:35,808 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 22:34:35,809 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 22:34:35,811 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 22:34:35,812 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 22:34:35,814 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 22:34:35,815 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 22:34:35,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 22:34:35,824 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 22:34:35,825 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 22:34:35,826 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 22:34:35,827 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 22:34:35,829 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 22:34:35,835 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 22:34:35,838 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 22:34:35,839 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 22:34:35,840 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 22:34:35,841 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 22:34:35,842 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 22:34:35,842 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 22:34:35,842 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 22:34:35,843 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 22:34:35,843 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 22:34:35,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 22:34:35,844 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 22:34:35,848 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-SemanticLbe.epf [2021-03-11 22:34:35,883 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 22:34:35,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 22:34:35,887 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 22:34:35,887 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 22:34:35,887 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 22:34:35,887 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 22:34:35,887 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 22:34:35,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 22:34:35,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 22:34:35,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 22:34:35,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 22:34:35,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 22:34:35,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 22:34:35,889 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 22:34:35,889 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 22:34:35,889 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 22:34:35,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 22:34:35,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 22:34:35,890 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 22:34:35,890 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 22:34:35,890 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 22:34:35,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 22:34:35,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 22:34:35,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 22:34:35,891 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 22:34:35,891 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 22:34:35,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 22:34:35,891 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 22:34:35,891 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 22:34:36,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 22:34:36,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 22:34:36,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 22:34:36,229 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-11 22:34:36,243 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-11 22:34:36,245 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/FischerWithBug.bpl [2021-03-11 22:34:36,245 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/FischerWithBug.bpl' [2021-03-11 22:34:36,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 22:34:36,297 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-11 22:34:36,298 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 22:34:36,298 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 22:34:36,298 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 22:34:36,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:34:36" (1/1) ... [2021-03-11 22:34:36,316 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:34:36" (1/1) ... [2021-03-11 22:34:36,322 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 22:34:36,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 22:34:36,324 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 22:34:36,324 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 22:34:36,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:34:36" (1/1) ... [2021-03-11 22:34:36,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:34:36" (1/1) ... [2021-03-11 22:34:36,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:34:36" (1/1) ... [2021-03-11 22:34:36,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:34:36" (1/1) ... [2021-03-11 22:34:36,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:34:36" (1/1) ... [2021-03-11 22:34:36,335 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:34:36" (1/1) ... [2021-03-11 22:34:36,335 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:34:36" (1/1) ... [2021-03-11 22:34:36,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 22:34:36,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 22:34:36,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 22:34:36,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 22:34:36,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:34:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 22:34:36,402 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process2 given in one single declaration [2021-03-11 22:34:36,402 INFO L130 BoogieDeclarations]: Found specification of procedure Process2 [2021-03-11 22:34:36,402 INFO L138 BoogieDeclarations]: Found implementation of procedure Process2 [2021-03-11 22:34:36,402 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process1 given in one single declaration [2021-03-11 22:34:36,402 INFO L130 BoogieDeclarations]: Found specification of procedure Process1 [2021-03-11 22:34:36,402 INFO L138 BoogieDeclarations]: Found implementation of procedure Process1 [2021-03-11 22:34:36,402 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-11 22:34:36,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 22:34:36,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 22:34:36,403 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Clock given in one single declaration [2021-03-11 22:34:36,403 INFO L130 BoogieDeclarations]: Found specification of procedure Clock [2021-03-11 22:34:36,403 INFO L138 BoogieDeclarations]: Found implementation of procedure Clock [2021-03-11 22:34:36,404 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 22:34:36,630 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 22:34:36,631 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-03-11 22:34:36,632 INFO L202 PluginConnector]: Adding new model FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 10:34:36 BoogieIcfgContainer [2021-03-11 22:34:36,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 22:34:36,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 22:34:36,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 22:34:36,635 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 22:34:36,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 10:34:36" (1/2) ... [2021-03-11 22:34:36,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@518a967c and model type FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 10:34:36, skipping insertion in model container [2021-03-11 22:34:36,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 10:34:36" (2/2) ... [2021-03-11 22:34:36,638 INFO L111 eAbstractionObserver]: Analyzing ICFG FischerWithBug.bpl [2021-03-11 22:34:36,658 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 22:34:36,661 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-11 22:34:36,662 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 22:34:36,714 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:34:36,715 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:34:36,716 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:34:36,716 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:34:36,716 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:34:36,716 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:34:36,716 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:34:36,717 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:34:36,718 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:34:36,718 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:34:36,718 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:34:36,719 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:34:36,719 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:34:36,719 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:34:36,719 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:34:36,720 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:34:36,739 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:34:36,741 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 22:34:36,743 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 22:34:36,758 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-03-11 22:34:36,791 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 22:34:36,792 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 22:34:36,792 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 22:34:36,792 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 22:34:36,792 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 22:34:36,792 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 22:34:36,792 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 22:34:36,792 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 22:34:36,804 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 46 transitions, 107 flow [2021-03-11 22:34:36,842 INFO L129 PetriNetUnfolder]: 5/43 cut-off events. [2021-03-11 22:34:36,842 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 22:34:36,845 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. [2021-03-11 22:34:36,846 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 46 transitions, 107 flow [2021-03-11 22:34:36,851 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 43 transitions, 95 flow [2021-03-11 22:34:36,854 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 22:34:36,865 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 43 transitions, 95 flow [2021-03-11 22:34:36,869 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 43 transitions, 95 flow [2021-03-11 22:34:36,869 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 43 transitions, 95 flow [2021-03-11 22:34:36,888 INFO L129 PetriNetUnfolder]: 5/43 cut-off events. [2021-03-11 22:34:36,888 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 22:34:36,889 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 5/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 110 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-03-11 22:34:36,891 INFO L116 LiptonReduction]: Number of co-enabled transitions 818 [2021-03-11 22:34:37,356 INFO L131 LiptonReduction]: Checked pairs total: 1516 [2021-03-11 22:34:37,356 INFO L133 LiptonReduction]: Total number of compositions: 12 [2021-03-11 22:34:37,357 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 506 [2021-03-11 22:34:37,365 INFO L129 PetriNetUnfolder]: 1/13 cut-off events. [2021-03-11 22:34:37,366 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 22:34:37,366 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:34:37,366 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-11 22:34:37,367 INFO L428 AbstractCegarLoop]: === Iteration 1 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-11 22:34:37,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:34:37,371 INFO L82 PathProgramCache]: Analyzing trace with hash 176055231, now seen corresponding path program 1 times [2021-03-11 22:34:37,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:34:37,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853135953] [2021-03-11 22:34:37,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:34:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:34:37,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:37,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 22:34:37,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:34:37,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853135953] [2021-03-11 22:34:37,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:34:37,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 22:34:37,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131428229] [2021-03-11 22:34:37,482 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 22:34:37,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:34:37,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 22:34:37,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 22:34:37,494 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 58 [2021-03-11 22:34:37,496 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:37,496 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:34:37,496 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 58 [2021-03-11 22:34:37,497 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:34:37,533 INFO L129 PetriNetUnfolder]: 31/107 cut-off events. [2021-03-11 22:34:37,533 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 22:34:37,534 INFO L84 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 107 events. 31/107 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 369 event pairs, 4 based on Foata normal form. 41/137 useless extension candidates. Maximal degree in co-relation 153. Up to 30 conditions per place. [2021-03-11 22:34:37,535 INFO L132 encePairwiseOnDemand]: 46/58 looper letters, 8 selfloop transitions, 7 changer transitions 0/34 dead transitions. [2021-03-11 22:34:37,536 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 34 transitions, 107 flow [2021-03-11 22:34:37,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 22:34:37,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 22:34:37,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2021-03-11 22:34:37,546 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8390804597701149 [2021-03-11 22:34:37,546 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2021-03-11 22:34:37,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2021-03-11 22:34:37,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:34:37,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2021-03-11 22:34:37,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:37,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:37,555 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:37,557 INFO L185 Difference]: Start difference. First operand has 36 places, 31 transitions, 71 flow. Second operand 3 states and 146 transitions. [2021-03-11 22:34:37,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 34 transitions, 107 flow [2021-03-11 22:34:37,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 34 transitions, 104 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-11 22:34:37,561 INFO L241 Difference]: Finished difference. Result has 34 places, 34 transitions, 118 flow [2021-03-11 22:34:37,562 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=34, PETRI_TRANSITIONS=34} [2021-03-11 22:34:37,563 INFO L335 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2021-03-11 22:34:37,563 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 34 transitions, 118 flow [2021-03-11 22:34:37,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:37,563 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:34:37,564 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:34:37,564 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 22:34:37,564 INFO L428 AbstractCegarLoop]: === Iteration 2 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-11 22:34:37,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:34:37,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1037054279, now seen corresponding path program 1 times [2021-03-11 22:34:37,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:34:37,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191875490] [2021-03-11 22:34:37,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:34:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:34:37,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:37,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:34:37,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:37,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 22:34:37,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:37,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:34:37,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:34:37,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191875490] [2021-03-11 22:34:37,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:34:37,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 22:34:37,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736544211] [2021-03-11 22:34:37,584 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 22:34:37,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:34:37,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 22:34:37,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 22:34:37,586 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 58 [2021-03-11 22:34:37,586 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 34 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:37,587 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:34:37,587 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 58 [2021-03-11 22:34:37,587 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:34:37,658 INFO L129 PetriNetUnfolder]: 101/251 cut-off events. [2021-03-11 22:34:37,659 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2021-03-11 22:34:37,662 INFO L84 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 251 events. 101/251 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1135 event pairs, 18 based on Foata normal form. 4/225 useless extension candidates. Maximal degree in co-relation 537. Up to 100 conditions per place. [2021-03-11 22:34:37,668 INFO L132 encePairwiseOnDemand]: 49/58 looper letters, 11 selfloop transitions, 6 changer transitions 0/39 dead transitions. [2021-03-11 22:34:37,669 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 39 transitions, 162 flow [2021-03-11 22:34:37,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 22:34:37,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 22:34:37,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2021-03-11 22:34:37,674 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7011494252873564 [2021-03-11 22:34:37,674 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 122 transitions. [2021-03-11 22:34:37,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 122 transitions. [2021-03-11 22:34:37,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:34:37,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 122 transitions. [2021-03-11 22:34:37,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:37,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:37,679 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:37,679 INFO L185 Difference]: Start difference. First operand has 34 places, 34 transitions, 118 flow. Second operand 3 states and 122 transitions. [2021-03-11 22:34:37,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 39 transitions, 162 flow [2021-03-11 22:34:37,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 39 transitions, 148 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 22:34:37,683 INFO L241 Difference]: Finished difference. Result has 36 places, 38 transitions, 150 flow [2021-03-11 22:34:37,684 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=36, PETRI_TRANSITIONS=38} [2021-03-11 22:34:37,684 INFO L335 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2021-03-11 22:34:37,685 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 38 transitions, 150 flow [2021-03-11 22:34:37,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:37,685 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:34:37,685 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:34:37,686 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 22:34:37,686 INFO L428 AbstractCegarLoop]: === Iteration 3 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-11 22:34:37,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:34:37,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1051353959, now seen corresponding path program 2 times [2021-03-11 22:34:37,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:34:37,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639854059] [2021-03-11 22:34:37,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:34:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:34:37,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:37,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:34:37,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:37,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 22:34:37,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:37,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:34:37,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:34:37,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639854059] [2021-03-11 22:34:37,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:34:37,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 22:34:37,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289739416] [2021-03-11 22:34:37,721 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 22:34:37,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:34:37,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 22:34:37,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 22:34:37,725 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 58 [2021-03-11 22:34:37,725 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 38 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:37,725 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:34:37,725 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 58 [2021-03-11 22:34:37,725 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:34:37,795 INFO L129 PetriNetUnfolder]: 90/241 cut-off events. [2021-03-11 22:34:37,795 INFO L130 PetriNetUnfolder]: For 108/118 co-relation queries the response was YES. [2021-03-11 22:34:37,797 INFO L84 FinitePrefix]: Finished finitePrefix Result has 589 conditions, 241 events. 90/241 cut-off events. For 108/118 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 973 event pairs, 12 based on Foata normal form. 23/250 useless extension candidates. Maximal degree in co-relation 579. Up to 105 conditions per place. [2021-03-11 22:34:37,799 INFO L132 encePairwiseOnDemand]: 49/58 looper letters, 13 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2021-03-11 22:34:37,800 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 198 flow [2021-03-11 22:34:37,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 22:34:37,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 22:34:37,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2021-03-11 22:34:37,801 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7126436781609196 [2021-03-11 22:34:37,802 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 124 transitions. [2021-03-11 22:34:37,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 124 transitions. [2021-03-11 22:34:37,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:34:37,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 124 transitions. [2021-03-11 22:34:37,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:37,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:37,805 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:37,805 INFO L185 Difference]: Start difference. First operand has 36 places, 38 transitions, 150 flow. Second operand 3 states and 124 transitions. [2021-03-11 22:34:37,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 42 transitions, 198 flow [2021-03-11 22:34:37,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 42 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 22:34:37,809 INFO L241 Difference]: Finished difference. Result has 38 places, 40 transitions, 180 flow [2021-03-11 22:34:37,809 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=38, PETRI_TRANSITIONS=40} [2021-03-11 22:34:37,809 INFO L335 CegarLoopForPetriNet]: 36 programPoint places, 2 predicate places. [2021-03-11 22:34:37,809 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 40 transitions, 180 flow [2021-03-11 22:34:37,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:37,810 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:34:37,810 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:34:37,810 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 22:34:37,810 INFO L428 AbstractCegarLoop]: === Iteration 4 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-11 22:34:37,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:34:37,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1267796549, now seen corresponding path program 1 times [2021-03-11 22:34:37,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:34:37,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35406631] [2021-03-11 22:34:37,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:34:37,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:34:37,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:37,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:34:37,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:37,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 22:34:37,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:37,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:34:37,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:34:37,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35406631] [2021-03-11 22:34:37,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:34:37,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 22:34:37,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908071260] [2021-03-11 22:34:37,870 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 22:34:37,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:34:37,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 22:34:37,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 22:34:37,871 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 58 [2021-03-11 22:34:37,872 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 40 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:37,872 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:34:37,872 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 58 [2021-03-11 22:34:37,872 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:34:37,908 INFO L129 PetriNetUnfolder]: 98/274 cut-off events. [2021-03-11 22:34:37,908 INFO L130 PetriNetUnfolder]: For 178/193 co-relation queries the response was YES. [2021-03-11 22:34:37,910 INFO L84 FinitePrefix]: Finished finitePrefix Result has 741 conditions, 274 events. 98/274 cut-off events. For 178/193 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1190 event pairs, 14 based on Foata normal form. 4/265 useless extension candidates. Maximal degree in co-relation 730. Up to 86 conditions per place. [2021-03-11 22:34:37,911 INFO L132 encePairwiseOnDemand]: 50/58 looper letters, 14 selfloop transitions, 10 changer transitions 0/46 dead transitions. [2021-03-11 22:34:37,911 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 46 transitions, 252 flow [2021-03-11 22:34:37,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 22:34:37,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 22:34:37,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2021-03-11 22:34:37,912 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7011494252873564 [2021-03-11 22:34:37,912 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 122 transitions. [2021-03-11 22:34:37,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 122 transitions. [2021-03-11 22:34:37,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:34:37,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 122 transitions. [2021-03-11 22:34:37,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:37,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:37,914 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:37,914 INFO L185 Difference]: Start difference. First operand has 38 places, 40 transitions, 180 flow. Second operand 3 states and 122 transitions. [2021-03-11 22:34:37,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 46 transitions, 252 flow [2021-03-11 22:34:37,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 46 transitions, 236 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 22:34:37,917 INFO L241 Difference]: Finished difference. Result has 40 places, 44 transitions, 234 flow [2021-03-11 22:34:37,917 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=40, PETRI_TRANSITIONS=44} [2021-03-11 22:34:37,917 INFO L335 CegarLoopForPetriNet]: 36 programPoint places, 4 predicate places. [2021-03-11 22:34:37,917 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 44 transitions, 234 flow [2021-03-11 22:34:37,918 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:37,918 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:34:37,918 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:34:37,918 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 22:34:37,918 INFO L428 AbstractCegarLoop]: === Iteration 5 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-11 22:34:37,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:34:37,918 INFO L82 PathProgramCache]: Analyzing trace with hash 742893115, now seen corresponding path program 2 times [2021-03-11 22:34:37,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:34:37,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456390210] [2021-03-11 22:34:37,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:34:37,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:34:37,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:37,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:34:37,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:37,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 22:34:37,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:37,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:34:37,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:34:37,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456390210] [2021-03-11 22:34:37,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:34:37,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 22:34:37,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326355649] [2021-03-11 22:34:37,935 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 22:34:37,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:34:37,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 22:34:37,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 22:34:37,936 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 58 [2021-03-11 22:34:37,936 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 44 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:37,936 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:34:37,936 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 58 [2021-03-11 22:34:37,936 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:34:37,975 INFO L129 PetriNetUnfolder]: 86/259 cut-off events. [2021-03-11 22:34:37,975 INFO L130 PetriNetUnfolder]: For 388/405 co-relation queries the response was YES. [2021-03-11 22:34:37,977 INFO L84 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 259 events. 86/259 cut-off events. For 388/405 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1074 event pairs, 13 based on Foata normal form. 16/259 useless extension candidates. Maximal degree in co-relation 778. Up to 81 conditions per place. [2021-03-11 22:34:37,978 INFO L132 encePairwiseOnDemand]: 50/58 looper letters, 14 selfloop transitions, 8 changer transitions 0/44 dead transitions. [2021-03-11 22:34:37,979 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 264 flow [2021-03-11 22:34:37,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 22:34:37,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 22:34:37,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2021-03-11 22:34:37,980 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7126436781609196 [2021-03-11 22:34:37,980 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 124 transitions. [2021-03-11 22:34:37,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 124 transitions. [2021-03-11 22:34:37,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:34:37,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 124 transitions. [2021-03-11 22:34:37,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:37,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:37,981 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:37,981 INFO L185 Difference]: Start difference. First operand has 40 places, 44 transitions, 234 flow. Second operand 3 states and 124 transitions. [2021-03-11 22:34:37,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 264 flow [2021-03-11 22:34:37,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 248 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 22:34:37,984 INFO L241 Difference]: Finished difference. Result has 40 places, 42 transitions, 216 flow [2021-03-11 22:34:37,984 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=40, PETRI_TRANSITIONS=42} [2021-03-11 22:34:37,984 INFO L335 CegarLoopForPetriNet]: 36 programPoint places, 4 predicate places. [2021-03-11 22:34:37,984 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 42 transitions, 216 flow [2021-03-11 22:34:37,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:37,985 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:34:37,985 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:34:37,985 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 22:34:37,985 INFO L428 AbstractCegarLoop]: === Iteration 6 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-11 22:34:37,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:34:37,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1815783107, now seen corresponding path program 1 times [2021-03-11 22:34:37,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:34:37,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014345552] [2021-03-11 22:34:37,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:34:37,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:34:38,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:38,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 22:34:38,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:38,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 22:34:38,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:38,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:34:38,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:34:38,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014345552] [2021-03-11 22:34:38,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:34:38,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 22:34:38,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643383823] [2021-03-11 22:34:38,012 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 22:34:38,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:34:38,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 22:34:38,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 22:34:38,013 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 58 [2021-03-11 22:34:38,013 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 42 transitions, 216 flow. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:38,013 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:34:38,013 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 58 [2021-03-11 22:34:38,013 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:34:38,076 INFO L129 PetriNetUnfolder]: 179/386 cut-off events. [2021-03-11 22:34:38,076 INFO L130 PetriNetUnfolder]: For 308/314 co-relation queries the response was YES. [2021-03-11 22:34:38,079 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1029 conditions, 386 events. 179/386 cut-off events. For 308/314 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1428 event pairs, 22 based on Foata normal form. 12/382 useless extension candidates. Maximal degree in co-relation 1016. Up to 188 conditions per place. [2021-03-11 22:34:38,081 INFO L132 encePairwiseOnDemand]: 54/58 looper letters, 12 selfloop transitions, 3 changer transitions 4/48 dead transitions. [2021-03-11 22:34:38,081 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 48 transitions, 282 flow [2021-03-11 22:34:38,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 22:34:38,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 22:34:38,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2021-03-11 22:34:38,082 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5905172413793104 [2021-03-11 22:34:38,082 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 137 transitions. [2021-03-11 22:34:38,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 137 transitions. [2021-03-11 22:34:38,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:34:38,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 137 transitions. [2021-03-11 22:34:38,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:38,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:38,085 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:38,085 INFO L185 Difference]: Start difference. First operand has 40 places, 42 transitions, 216 flow. Second operand 4 states and 137 transitions. [2021-03-11 22:34:38,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 48 transitions, 282 flow [2021-03-11 22:34:38,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 48 transitions, 273 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 22:34:38,088 INFO L241 Difference]: Finished difference. Result has 43 places, 43 transitions, 222 flow [2021-03-11 22:34:38,088 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2021-03-11 22:34:38,088 INFO L335 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2021-03-11 22:34:38,088 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 222 flow [2021-03-11 22:34:38,088 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:38,089 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:34:38,089 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:34:38,089 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 22:34:38,089 INFO L428 AbstractCegarLoop]: === Iteration 7 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-11 22:34:38,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:34:38,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1517011950, now seen corresponding path program 1 times [2021-03-11 22:34:38,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:34:38,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395135045] [2021-03-11 22:34:38,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:34:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 22:34:38,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:38,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 22:34:38,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:38,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-11 22:34:38,175 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 22:34:38,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 22:34:38,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 22:34:38,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395135045] [2021-03-11 22:34:38,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 22:34:38,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 22:34:38,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506714080] [2021-03-11 22:34:38,183 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 22:34:38,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 22:34:38,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 22:34:38,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 22:34:38,186 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 58 [2021-03-11 22:34:38,187 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:38,187 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 22:34:38,187 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 58 [2021-03-11 22:34:38,187 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 22:34:38,258 INFO L129 PetriNetUnfolder]: 190/423 cut-off events. [2021-03-11 22:34:38,258 INFO L130 PetriNetUnfolder]: For 348/355 co-relation queries the response was YES. [2021-03-11 22:34:38,260 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1255 conditions, 423 events. 190/423 cut-off events. For 348/355 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1600 event pairs, 26 based on Foata normal form. 13/421 useless extension candidates. Maximal degree in co-relation 1240. Up to 216 conditions per place. [2021-03-11 22:34:38,263 INFO L132 encePairwiseOnDemand]: 54/58 looper letters, 14 selfloop transitions, 3 changer transitions 4/50 dead transitions. [2021-03-11 22:34:38,263 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 50 transitions, 301 flow [2021-03-11 22:34:38,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 22:34:38,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 22:34:38,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2021-03-11 22:34:38,264 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.5905172413793104 [2021-03-11 22:34:38,264 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 137 transitions. [2021-03-11 22:34:38,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 137 transitions. [2021-03-11 22:34:38,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 22:34:38,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 137 transitions. [2021-03-11 22:34:38,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:38,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:38,266 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:38,266 INFO L185 Difference]: Start difference. First operand has 43 places, 43 transitions, 222 flow. Second operand 4 states and 137 transitions. [2021-03-11 22:34:38,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 50 transitions, 301 flow [2021-03-11 22:34:38,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 50 transitions, 291 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-11 22:34:38,271 INFO L241 Difference]: Finished difference. Result has 45 places, 44 transitions, 234 flow [2021-03-11 22:34:38,272 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=216, 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=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2021-03-11 22:34:38,272 INFO L335 CegarLoopForPetriNet]: 36 programPoint places, 9 predicate places. [2021-03-11 22:34:38,272 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 234 flow [2021-03-11 22:34:38,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 22:34:38,272 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 22:34:38,272 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 22:34:38,272 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 22:34:38,273 INFO L428 AbstractCegarLoop]: === Iteration 8 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-11 22:34:38,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 22:34:38,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1886590937, now seen corresponding path program 2 times [2021-03-11 22:34:38,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 22:34:38,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736911607] [2021-03-11 22:34:38,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 22:34:38,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 22:34:38,298 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 22:34:38,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 22:34:38,303 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 22:34:38,324 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-11 22:34:38,324 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-03-11 22:34:38,324 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 22:34:38,354 INFO L202 PluginConnector]: Adding new model FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 10:34:38 BasicIcfg [2021-03-11 22:34:38,354 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 22:34:38,355 INFO L168 Benchmark]: Toolchain (without parser) took 2061.73 ms. Allocated memory was 255.9 MB in the beginning and 352.3 MB in the end (delta: 96.5 MB). Free memory was 236.4 MB in the beginning and 311.0 MB in the end (delta: -74.7 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.0 GB. [2021-03-11 22:34:38,355 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.14 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.4 MB in the end (delta: 185.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 22:34:38,356 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.82 ms. Allocated memory is still 255.9 MB. Free memory was 235.9 MB in the beginning and 234.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 22:34:38,359 INFO L168 Benchmark]: Boogie Preprocessor took 12.94 ms. Allocated memory is still 255.9 MB. Free memory was 234.4 MB in the beginning and 233.4 MB in the end (delta: 963.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 22:34:38,359 INFO L168 Benchmark]: RCFGBuilder took 295.12 ms. Allocated memory is still 255.9 MB. Free memory was 233.4 MB in the beginning and 236.7 MB in the end (delta: -3.2 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.0 GB. [2021-03-11 22:34:38,361 INFO L168 Benchmark]: TraceAbstraction took 1720.71 ms. Allocated memory was 255.9 MB in the beginning and 352.3 MB in the end (delta: 96.5 MB). Free memory was 236.7 MB in the beginning and 311.0 MB in the end (delta: -74.4 MB). Peak memory consumption was 19.6 MB. Max. memory is 16.0 GB. [2021-03-11 22:34:38,364 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 0.14 ms. Allocated memory is still 255.9 MB. Free memory was 237.6 MB in the beginning and 237.4 MB in the end (delta: 185.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 24.82 ms. Allocated memory is still 255.9 MB. Free memory was 235.9 MB in the beginning and 234.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.94 ms. Allocated memory is still 255.9 MB. Free memory was 234.4 MB in the beginning and 233.4 MB in the end (delta: 963.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 295.12 ms. Allocated memory is still 255.9 MB. Free memory was 233.4 MB in the beginning and 236.7 MB in the end (delta: -3.2 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1720.71 ms. Allocated memory was 255.9 MB in the beginning and 352.3 MB in the end (delta: 96.5 MB). Free memory was 236.7 MB in the beginning and 311.0 MB in the end (delta: -74.4 MB). Peak memory consumption was 19.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 487.7ms, 48 PlacesBefore, 36 PlacesAfterwards, 43 TransitionsBefore, 31 TransitionsAfterwards, 818 CoEnabledTransitionPairs, 2 FixpointIterations, 3 TrivialSequentialCompositions, 9 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 12 TotalNumberOfCompositions, 1516 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 712, positive: 634, positive conditional: 0, positive unconditional: 634, negative: 78, negative conditional: 0, negative unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 410, positive: 374, positive conditional: 0, positive unconditional: 374, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 410, positive: 352, positive conditional: 0, positive unconditional: 352, negative: 58, negative conditional: 0, negative unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 58, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 185, positive: 79, positive conditional: 0, positive unconditional: 79, negative: 106, negative conditional: 0, negative unconditional: 106, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 712, positive: 260, positive conditional: 0, positive unconditional: 260, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 410, unknown conditional: 0, unknown unconditional: 410] , Statistics on independence cache: Total cache size (in pairs): 175, Positive cache size: 147, Positive conditional cache size: 0, Positive unconditional cache size: 147, Negative cache size: 28, Negative conditional cache size: 0, Negative unconditional cache size: 28 - CounterExampleResult [Line: 87]: assertion can be violated assertion can be violated We found a FailurePath: [L28] 0 critical := 0; [L29] 0 clk := 0; [L30] 0 assume 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 [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 [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; [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; [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; [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=1, deadline=2, delay=1, lock=2, wait=1] [L44] 1 clk := clk + 1; VAL [clk=2, critical=1, deadline=1, deadline=2, delay=1, lock=2, wait=1] [L84] 3 assume clk >= deadline; [L85] 3 assume lock == 2; VAL [clk=2, critical=1, deadline=1, deadline=2, delay=1, lock=2, wait=1] [L87] 3 assert critical == 0; VAL [clk=2, critical=1, deadline=1, deadline=2, 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: 2.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 1536.7ms, OverallIterations: 8, TraceHistogramMax: 2, EmptinessCheckTime: 0.0ms, AutomataDifference: 518.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 570.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 78 SDtfs, 29 SDslu, 0 SDs, 0 SdLazy, 88 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 89.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=234occurred 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: 12.9ms SsaConstructionTime, 82.6ms SatisfiabilityAnalysisTime, 189.9ms InterpolantComputationTime, 103 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 77 ConstructedInterpolants, 0 QuantifiedInterpolants, 153 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...