/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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/showcase/FischerWithBug.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 13:30:26,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 13:30:26,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 13:30:26,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 13:30:26,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 13:30:26,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 13:30:26,918 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 13:30:26,920 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 13:30:26,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 13:30:26,922 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 13:30:26,923 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 13:30:26,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 13:30:26,924 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 13:30:26,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 13:30:26,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 13:30:26,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 13:30:26,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 13:30:26,928 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 13:30:26,930 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 13:30:26,931 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 13:30:26,933 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 13:30:26,934 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 13:30:26,935 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 13:30:26,936 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 13:30:26,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-24 13:30:26,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-24 13:30:26,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-24 13:30:26,949 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-24 13:30:26,949 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-24 13:30:26,950 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-24 13:30:26,950 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 13:30:26,952 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 13:30:26,953 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 13:30:26,955 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 13:30:26,957 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 13:30:26,957 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 13:30:26,958 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 13:30:26,958 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 13:30:26,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 13:30:26,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 13:30:26,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 13:30:26,964 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-VariableLbe.epf [2021-03-24 13:30:27,009 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 13:30:27,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 13:30:27,013 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 13:30:27,013 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 13:30:27,014 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 13:30:27,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 13:30:27,014 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 13:30:27,014 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 13:30:27,014 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 13:30:27,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 13:30:27,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 13:30:27,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 13:30:27,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 13:30:27,016 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 13:30:27,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 13:30:27,016 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 13:30:27,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 13:30:27,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 13:30:27,016 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 13:30:27,016 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 13:30:27,017 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 13:30:27,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 13:30:27,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 13:30:27,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 13:30:27,017 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 13:30:27,017 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 13:30:27,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 13:30:27,018 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 13:30:27,018 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 13:30:27,018 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 13:30:27,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 13:30:27,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 13:30:27,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 13:30:27,345 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-24 13:30:27,347 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-24 13:30:27,348 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/FischerWithBug.bpl [2021-03-24 13:30:27,348 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/FischerWithBug.bpl' [2021-03-24 13:30:27,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 13:30:27,391 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-24 13:30:27,396 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 13:30:27,396 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 13:30:27,396 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 13:30:27,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:30:27" (1/1) ... [2021-03-24 13:30:27,410 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:30:27" (1/1) ... [2021-03-24 13:30:27,416 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 13:30:27,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 13:30:27,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 13:30:27,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 13:30:27,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:30:27" (1/1) ... [2021-03-24 13:30:27,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:30:27" (1/1) ... [2021-03-24 13:30:27,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:30:27" (1/1) ... [2021-03-24 13:30:27,426 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:30:27" (1/1) ... [2021-03-24 13:30:27,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:30:27" (1/1) ... [2021-03-24 13:30:27,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:30:27" (1/1) ... [2021-03-24 13:30:27,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:30:27" (1/1) ... [2021-03-24 13:30:27,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 13:30:27,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 13:30:27,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 13:30:27,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 13:30:27,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:30:27" (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 [2021-03-24 13:30:27,495 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process2 given in one single declaration [2021-03-24 13:30:27,495 INFO L130 BoogieDeclarations]: Found specification of procedure Process2 [2021-03-24 13:30:27,495 INFO L138 BoogieDeclarations]: Found implementation of procedure Process2 [2021-03-24 13:30:27,495 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process1 given in one single declaration [2021-03-24 13:30:27,495 INFO L130 BoogieDeclarations]: Found specification of procedure Process1 [2021-03-24 13:30:27,495 INFO L138 BoogieDeclarations]: Found implementation of procedure Process1 [2021-03-24 13:30:27,496 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-24 13:30:27,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 13:30:27,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 13:30:27,496 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Clock given in one single declaration [2021-03-24 13:30:27,496 INFO L130 BoogieDeclarations]: Found specification of procedure Clock [2021-03-24 13:30:27,496 INFO L138 BoogieDeclarations]: Found implementation of procedure Clock [2021-03-24 13:30:27,497 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 13:30:27,735 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 13:30:27,736 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-03-24 13:30:27,737 INFO L202 PluginConnector]: Adding new model FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 01:30:27 BoogieIcfgContainer [2021-03-24 13:30:27,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 13:30:27,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 13:30:27,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 13:30:27,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 13:30:27,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 01:30:27" (1/2) ... [2021-03-24 13:30:27,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24816a8b and model type FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 01:30:27, skipping insertion in model container [2021-03-24 13:30:27,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 01:30:27" (2/2) ... [2021-03-24 13:30:27,742 INFO L111 eAbstractionObserver]: Analyzing ICFG FischerWithBug.bpl [2021-03-24 13:30:27,763 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 13:30:27,767 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-24 13:30:27,767 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 13:30:27,827 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:30:27,827 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:30:27,828 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:30:27,828 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:30:27,828 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:30:27,828 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:30:27,828 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:30:27,829 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:30:27,830 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:30:27,830 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:30:27,830 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:30:27,831 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:30:27,831 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:30:27,831 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:30:27,831 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:30:27,831 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:30:27,841 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:30:27,843 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:30:27,844 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 13:30:27,861 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-03-24 13:30:27,893 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 13:30:27,893 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 13:30:27,894 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 13:30:27,894 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 13:30:27,894 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 13:30:27,894 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 13:30:27,894 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 13:30:27,894 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 13:30:27,905 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 46 transitions, 107 flow [2021-03-24 13:30:27,938 INFO L129 PetriNetUnfolder]: 5/43 cut-off events. [2021-03-24 13:30:27,939 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:30:27,942 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. [2021-03-24 13:30:27,942 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 46 transitions, 107 flow [2021-03-24 13:30:27,947 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 43 transitions, 95 flow [2021-03-24 13:30:27,948 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 13:30:27,959 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 43 transitions, 95 flow [2021-03-24 13:30:27,962 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 43 transitions, 95 flow [2021-03-24 13:30:27,966 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 43 transitions, 95 flow [2021-03-24 13:30:27,985 INFO L129 PetriNetUnfolder]: 5/43 cut-off events. [2021-03-24 13:30:27,985 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:30:27,986 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. [2021-03-24 13:30:27,988 INFO L142 LiptonReduction]: Number of co-enabled transitions 818 [2021-03-24 13:30:28,153 INFO L154 LiptonReduction]: Checked pairs total: 1916 [2021-03-24 13:30:28,154 INFO L156 LiptonReduction]: Total number of compositions: 6 [2021-03-24 13:30:28,156 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 209 [2021-03-24 13:30:28,165 INFO L129 PetriNetUnfolder]: 1/13 cut-off events. [2021-03-24 13:30:28,165 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:30:28,166 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:28,166 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-03-24 13:30:28,166 INFO L428 AbstractCegarLoop]: === Iteration 1 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-24 13:30:28,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:28,173 INFO L82 PathProgramCache]: Analyzing trace with hash 170514105, now seen corresponding path program 1 times [2021-03-24 13:30:28,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:28,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219098520] [2021-03-24 13:30:28,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:28,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:28,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:28,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:30:28,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:28,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219098520] [2021-03-24 13:30:28,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:28,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-24 13:30:28,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186751086] [2021-03-24 13:30:28,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:30:28,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:28,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:30:28,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:30:28,282 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 52 [2021-03-24 13:30:28,283 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 83 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) [2021-03-24 13:30:28,283 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:28,283 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 52 [2021-03-24 13:30:28,284 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:28,356 INFO L129 PetriNetUnfolder]: 31/131 cut-off events. [2021-03-24 13:30:28,356 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 13:30:28,357 INFO L84 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 131 events. 31/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 493 event pairs, 4 based on Foata normal form. 41/161 useless extension candidates. Maximal degree in co-relation 177. Up to 30 conditions per place. [2021-03-24 13:30:28,359 INFO L132 encePairwiseOnDemand]: 40/52 looper letters, 8 selfloop transitions, 7 changer transitions 0/40 dead transitions. [2021-03-24 13:30:28,359 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 40 transitions, 119 flow [2021-03-24 13:30:28,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:30:28,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:30:28,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2021-03-24 13:30:28,373 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8205128205128205 [2021-03-24 13:30:28,373 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 128 transitions. [2021-03-24 13:30:28,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 128 transitions. [2021-03-24 13:30:28,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:28,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 128 transitions. [2021-03-24 13:30:28,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:28,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:28,393 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:28,395 INFO L185 Difference]: Start difference. First operand has 42 places, 37 transitions, 83 flow. Second operand 3 states and 128 transitions. [2021-03-24 13:30:28,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 40 transitions, 119 flow [2021-03-24 13:30:28,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 40 transitions, 116 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 13:30:28,400 INFO L241 Difference]: Finished difference. Result has 40 places, 40 transitions, 130 flow [2021-03-24 13:30:28,401 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2021-03-24 13:30:28,402 INFO L343 CegarLoopForPetriNet]: 42 programPoint places, -2 predicate places. [2021-03-24 13:30:28,402 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 130 flow [2021-03-24 13:30:28,402 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) [2021-03-24 13:30:28,402 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:28,402 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:28,402 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 13:30:28,403 INFO L428 AbstractCegarLoop]: === Iteration 2 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-24 13:30:28,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:28,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1003120831, now seen corresponding path program 1 times [2021-03-24 13:30:28,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:28,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443604789] [2021-03-24 13:30:28,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:28,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:28,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:30:28,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:28,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:30:28,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:28,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:30:28,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:28,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443604789] [2021-03-24 13:30:28,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:28,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:30:28,428 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183923718] [2021-03-24 13:30:28,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:30:28,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:28,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:30:28,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:30:28,430 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 52 [2021-03-24 13:30:28,431 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 130 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) [2021-03-24 13:30:28,431 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:28,431 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 52 [2021-03-24 13:30:28,431 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:28,505 INFO L129 PetriNetUnfolder]: 97/294 cut-off events. [2021-03-24 13:30:28,505 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-03-24 13:30:28,508 INFO L84 FinitePrefix]: Finished finitePrefix Result has 590 conditions, 294 events. 97/294 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1532 event pairs, 20 based on Foata normal form. 4/270 useless extension candidates. Maximal degree in co-relation 580. Up to 100 conditions per place. [2021-03-24 13:30:28,510 INFO L132 encePairwiseOnDemand]: 43/52 looper letters, 11 selfloop transitions, 6 changer transitions 0/45 dead transitions. [2021-03-24 13:30:28,510 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 45 transitions, 174 flow [2021-03-24 13:30:28,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:30:28,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:30:28,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2021-03-24 13:30:28,516 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.782051282051282 [2021-03-24 13:30:28,516 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 122 transitions. [2021-03-24 13:30:28,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 122 transitions. [2021-03-24 13:30:28,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:28,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 122 transitions. [2021-03-24 13:30:28,518 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) [2021-03-24 13:30:28,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:28,520 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:28,521 INFO L185 Difference]: Start difference. First operand has 40 places, 40 transitions, 130 flow. Second operand 3 states and 122 transitions. [2021-03-24 13:30:28,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 45 transitions, 174 flow [2021-03-24 13:30:28,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 45 transitions, 160 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 13:30:28,527 INFO L241 Difference]: Finished difference. Result has 42 places, 44 transitions, 162 flow [2021-03-24 13:30:28,527 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=42, PETRI_TRANSITIONS=44} [2021-03-24 13:30:28,527 INFO L343 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2021-03-24 13:30:28,528 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 44 transitions, 162 flow [2021-03-24 13:30:28,528 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) [2021-03-24 13:30:28,528 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:28,528 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:28,528 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 13:30:28,529 INFO L428 AbstractCegarLoop]: === Iteration 3 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-24 13:30:28,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:28,529 INFO L82 PathProgramCache]: Analyzing trace with hash -988821151, now seen corresponding path program 2 times [2021-03-24 13:30:28,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:28,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047334995] [2021-03-24 13:30:28,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:28,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:28,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:30:28,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:28,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:30:28,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:28,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:30:28,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:28,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047334995] [2021-03-24 13:30:28,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:28,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:30:28,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185973353] [2021-03-24 13:30:28,546 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:30:28,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:28,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:30:28,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:30:28,548 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 52 [2021-03-24 13:30:28,548 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 44 transitions, 162 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) [2021-03-24 13:30:28,548 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:28,548 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 52 [2021-03-24 13:30:28,548 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:28,597 INFO L129 PetriNetUnfolder]: 86/278 cut-off events. [2021-03-24 13:30:28,597 INFO L130 PetriNetUnfolder]: For 117/127 co-relation queries the response was YES. [2021-03-24 13:30:28,600 INFO L84 FinitePrefix]: Finished finitePrefix Result has 622 conditions, 278 events. 86/278 cut-off events. For 117/127 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1170 event pairs, 14 based on Foata normal form. 24/288 useless extension candidates. Maximal degree in co-relation 612. Up to 105 conditions per place. [2021-03-24 13:30:28,602 INFO L132 encePairwiseOnDemand]: 43/52 looper letters, 13 selfloop transitions, 7 changer transitions 0/48 dead transitions. [2021-03-24 13:30:28,602 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 48 transitions, 210 flow [2021-03-24 13:30:28,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:30:28,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:30:28,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2021-03-24 13:30:28,604 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7948717948717948 [2021-03-24 13:30:28,604 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 124 transitions. [2021-03-24 13:30:28,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 124 transitions. [2021-03-24 13:30:28,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:28,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 124 transitions. [2021-03-24 13:30:28,605 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) [2021-03-24 13:30:28,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:28,606 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:28,606 INFO L185 Difference]: Start difference. First operand has 42 places, 44 transitions, 162 flow. Second operand 3 states and 124 transitions. [2021-03-24 13:30:28,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 48 transitions, 210 flow [2021-03-24 13:30:28,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 48 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 13:30:28,609 INFO L241 Difference]: Finished difference. Result has 44 places, 46 transitions, 192 flow [2021-03-24 13:30:28,610 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=44, PETRI_TRANSITIONS=46} [2021-03-24 13:30:28,610 INFO L343 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2021-03-24 13:30:28,610 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 46 transitions, 192 flow [2021-03-24 13:30:28,610 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) [2021-03-24 13:30:28,610 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:28,611 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:28,611 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 13:30:28,611 INFO L428 AbstractCegarLoop]: === Iteration 4 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-24 13:30:28,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:28,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1220890440, now seen corresponding path program 1 times [2021-03-24 13:30:28,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:28,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700597114] [2021-03-24 13:30:28,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:28,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:28,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:28,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:30:28,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:28,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:30:28,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:28,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:30:28,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:28,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700597114] [2021-03-24 13:30:28,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:28,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:30:28,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728222340] [2021-03-24 13:30:28,635 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:30:28,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:28,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:30:28,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:30:28,636 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 52 [2021-03-24 13:30:28,636 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 46 transitions, 192 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) [2021-03-24 13:30:28,636 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:28,636 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 52 [2021-03-24 13:30:28,637 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:28,687 INFO L129 PetriNetUnfolder]: 94/324 cut-off events. [2021-03-24 13:30:28,687 INFO L130 PetriNetUnfolder]: For 217/232 co-relation queries the response was YES. [2021-03-24 13:30:28,689 INFO L84 FinitePrefix]: Finished finitePrefix Result has 787 conditions, 324 events. 94/324 cut-off events. For 217/232 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1479 event pairs, 16 based on Foata normal form. 7/319 useless extension candidates. Maximal degree in co-relation 776. Up to 86 conditions per place. [2021-03-24 13:30:28,691 INFO L132 encePairwiseOnDemand]: 44/52 looper letters, 14 selfloop transitions, 10 changer transitions 0/52 dead transitions. [2021-03-24 13:30:28,691 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 52 transitions, 264 flow [2021-03-24 13:30:28,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:30:28,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:30:28,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2021-03-24 13:30:28,693 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.782051282051282 [2021-03-24 13:30:28,693 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 122 transitions. [2021-03-24 13:30:28,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 122 transitions. [2021-03-24 13:30:28,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:28,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 122 transitions. [2021-03-24 13:30:28,694 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) [2021-03-24 13:30:28,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:28,695 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:28,695 INFO L185 Difference]: Start difference. First operand has 44 places, 46 transitions, 192 flow. Second operand 3 states and 122 transitions. [2021-03-24 13:30:28,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 52 transitions, 264 flow [2021-03-24 13:30:28,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 52 transitions, 248 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 13:30:28,698 INFO L241 Difference]: Finished difference. Result has 46 places, 50 transitions, 246 flow [2021-03-24 13:30:28,699 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=46, PETRI_TRANSITIONS=50} [2021-03-24 13:30:28,699 INFO L343 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2021-03-24 13:30:28,699 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 50 transitions, 246 flow [2021-03-24 13:30:28,699 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) [2021-03-24 13:30:28,699 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:28,699 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:28,700 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 13:30:28,700 INFO L428 AbstractCegarLoop]: === Iteration 5 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-24 13:30:28,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:28,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1012452382, now seen corresponding path program 2 times [2021-03-24 13:30:28,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:28,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415343679] [2021-03-24 13:30:28,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:28,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:28,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:30:28,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:28,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:30:28,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:28,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:30:28,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:28,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415343679] [2021-03-24 13:30:28,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:28,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:30:28,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760234707] [2021-03-24 13:30:28,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 13:30:28,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:28,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 13:30:28,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 13:30:28,724 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 52 [2021-03-24 13:30:28,724 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 50 transitions, 246 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) [2021-03-24 13:30:28,724 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:28,725 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 52 [2021-03-24 13:30:28,725 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:28,783 INFO L129 PetriNetUnfolder]: 86/310 cut-off events. [2021-03-24 13:30:28,783 INFO L130 PetriNetUnfolder]: For 422/445 co-relation queries the response was YES. [2021-03-24 13:30:28,784 INFO L84 FinitePrefix]: Finished finitePrefix Result has 841 conditions, 310 events. 86/310 cut-off events. For 422/445 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1266 event pairs, 13 based on Foata normal form. 17/310 useless extension candidates. Maximal degree in co-relation 829. Up to 81 conditions per place. [2021-03-24 13:30:28,786 INFO L132 encePairwiseOnDemand]: 44/52 looper letters, 14 selfloop transitions, 8 changer transitions 0/50 dead transitions. [2021-03-24 13:30:28,786 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 50 transitions, 276 flow [2021-03-24 13:30:28,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 13:30:28,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 13:30:28,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2021-03-24 13:30:28,789 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7948717948717948 [2021-03-24 13:30:28,789 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 124 transitions. [2021-03-24 13:30:28,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 124 transitions. [2021-03-24 13:30:28,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:28,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 124 transitions. [2021-03-24 13:30:28,790 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) [2021-03-24 13:30:28,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:28,792 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:28,792 INFO L185 Difference]: Start difference. First operand has 46 places, 50 transitions, 246 flow. Second operand 3 states and 124 transitions. [2021-03-24 13:30:28,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 50 transitions, 276 flow [2021-03-24 13:30:28,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 50 transitions, 260 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 13:30:28,798 INFO L241 Difference]: Finished difference. Result has 46 places, 48 transitions, 228 flow [2021-03-24 13:30:28,798 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=46, PETRI_TRANSITIONS=48} [2021-03-24 13:30:28,799 INFO L343 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2021-03-24 13:30:28,799 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 48 transitions, 228 flow [2021-03-24 13:30:28,799 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) [2021-03-24 13:30:28,799 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:28,799 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:28,799 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 13:30:28,800 INFO L428 AbstractCegarLoop]: === Iteration 6 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-24 13:30:28,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:28,800 INFO L82 PathProgramCache]: Analyzing trace with hash -513121013, now seen corresponding path program 1 times [2021-03-24 13:30:28,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:28,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96812681] [2021-03-24 13:30:28,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:28,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:28,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:30:28,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:28,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 13:30:28,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:28,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:30:28,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:28,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96812681] [2021-03-24 13:30:28,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:28,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:30:28,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721402364] [2021-03-24 13:30:28,867 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 13:30:28,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:28,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 13:30:28,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 13:30:28,868 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 13:30:28,869 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 48 transitions, 228 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) [2021-03-24 13:30:28,869 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:28,869 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 13:30:28,869 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:28,986 INFO L129 PetriNetUnfolder]: 220/524 cut-off events. [2021-03-24 13:30:28,986 INFO L130 PetriNetUnfolder]: For 232/238 co-relation queries the response was YES. [2021-03-24 13:30:28,989 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1238 conditions, 524 events. 220/524 cut-off events. For 232/238 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2163 event pairs, 40 based on Foata normal form. 18/521 useless extension candidates. Maximal degree in co-relation 1225. Up to 239 conditions per place. [2021-03-24 13:30:28,991 INFO L132 encePairwiseOnDemand]: 48/52 looper letters, 13 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2021-03-24 13:30:28,991 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 53 transitions, 270 flow [2021-03-24 13:30:28,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 13:30:28,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 13:30:28,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2021-03-24 13:30:28,992 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6586538461538461 [2021-03-24 13:30:28,992 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 137 transitions. [2021-03-24 13:30:28,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 137 transitions. [2021-03-24 13:30:28,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:28,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 137 transitions. [2021-03-24 13:30:28,993 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) [2021-03-24 13:30:28,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 52.0) internal successors, (260), 5 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:28,994 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 52.0) internal successors, (260), 5 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:28,994 INFO L185 Difference]: Start difference. First operand has 46 places, 48 transitions, 228 flow. Second operand 4 states and 137 transitions. [2021-03-24 13:30:28,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 53 transitions, 270 flow [2021-03-24 13:30:28,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 53 transitions, 262 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 13:30:28,997 INFO L241 Difference]: Finished difference. Result has 49 places, 49 transitions, 234 flow [2021-03-24 13:30:28,997 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=49, PETRI_TRANSITIONS=49} [2021-03-24 13:30:28,997 INFO L343 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2021-03-24 13:30:28,998 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 49 transitions, 234 flow [2021-03-24 13:30:28,998 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) [2021-03-24 13:30:28,998 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:28,998 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:28,998 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 13:30:28,998 INFO L428 AbstractCegarLoop]: === Iteration 7 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-24 13:30:28,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:28,999 INFO L82 PathProgramCache]: Analyzing trace with hash -739639176, now seen corresponding path program 1 times [2021-03-24 13:30:28,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:28,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757946815] [2021-03-24 13:30:28,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:29,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:30:29,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:29,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:30:29,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:29,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-24 13:30:29,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:30:29,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:30:29,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:30:29,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757946815] [2021-03-24 13:30:29,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:30:29,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 13:30:29,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9609090] [2021-03-24 13:30:29,063 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 13:30:29,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:30:29,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 13:30:29,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 13:30:29,064 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 52 [2021-03-24 13:30:29,064 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 49 transitions, 234 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) [2021-03-24 13:30:29,064 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:30:29,070 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 52 [2021-03-24 13:30:29,071 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:30:29,149 INFO L129 PetriNetUnfolder]: 236/574 cut-off events. [2021-03-24 13:30:29,149 INFO L130 PetriNetUnfolder]: For 268/274 co-relation queries the response was YES. [2021-03-24 13:30:29,151 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1518 conditions, 574 events. 236/574 cut-off events. For 268/274 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2428 event pairs, 44 based on Foata normal form. 20/573 useless extension candidates. Maximal degree in co-relation 1503. Up to 274 conditions per place. [2021-03-24 13:30:29,153 INFO L132 encePairwiseOnDemand]: 48/52 looper letters, 12 selfloop transitions, 3 changer transitions 3/55 dead transitions. [2021-03-24 13:30:29,153 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 55 transitions, 292 flow [2021-03-24 13:30:29,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-24 13:30:29,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-24 13:30:29,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2021-03-24 13:30:29,155 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6586538461538461 [2021-03-24 13:30:29,155 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 137 transitions. [2021-03-24 13:30:29,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 137 transitions. [2021-03-24 13:30:29,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:30:29,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 137 transitions. [2021-03-24 13:30:29,156 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) [2021-03-24 13:30:29,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 52.0) internal successors, (260), 5 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:29,156 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 52.0) internal successors, (260), 5 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 13:30:29,157 INFO L185 Difference]: Start difference. First operand has 49 places, 49 transitions, 234 flow. Second operand 4 states and 137 transitions. [2021-03-24 13:30:29,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 55 transitions, 292 flow [2021-03-24 13:30:29,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 55 transitions, 282 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-24 13:30:29,160 INFO L241 Difference]: Finished difference. Result has 51 places, 50 transitions, 246 flow [2021-03-24 13:30:29,160 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=246, PETRI_PLACES=51, PETRI_TRANSITIONS=50} [2021-03-24 13:30:29,160 INFO L343 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2021-03-24 13:30:29,160 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 246 flow [2021-03-24 13:30:29,160 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) [2021-03-24 13:30:29,160 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:30:29,160 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:30:29,161 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 13:30:29,161 INFO L428 AbstractCegarLoop]: === Iteration 8 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-03-24 13:30:29,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:30:29,161 INFO L82 PathProgramCache]: Analyzing trace with hash -487885395, now seen corresponding path program 2 times [2021-03-24 13:30:29,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:30:29,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044009934] [2021-03-24 13:30:29,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:30:29,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 13:30:29,172 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 13:30:29,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 13:30:29,179 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 13:30:29,200 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-24 13:30:29,201 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-24 13:30:29,201 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 13:30:29,232 INFO L202 PluginConnector]: Adding new model FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 01:30:29 BasicIcfg [2021-03-24 13:30:29,232 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 13:30:29,233 INFO L168 Benchmark]: Toolchain (without parser) took 1841.90 ms. Allocated memory was 255.9 MB in the beginning and 343.9 MB in the end (delta: 88.1 MB). Free memory was 236.9 MB in the beginning and 272.9 MB in the end (delta: -36.0 MB). Peak memory consumption was 52.2 MB. Max. memory is 16.0 GB. [2021-03-24 13:30:29,234 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 13:30:29,236 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.18 ms. Allocated memory is still 255.9 MB. Free memory was 236.7 MB in the beginning and 235.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 13:30:29,237 INFO L168 Benchmark]: Boogie Preprocessor took 15.67 ms. Allocated memory is still 255.9 MB. Free memory was 235.3 MB in the beginning and 234.4 MB in the end (delta: 924.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 13:30:29,240 INFO L168 Benchmark]: RCFGBuilder took 302.93 ms. Allocated memory is still 255.9 MB. Free memory was 234.2 MB in the beginning and 237.7 MB in the end (delta: -3.5 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.0 GB. [2021-03-24 13:30:29,241 INFO L168 Benchmark]: TraceAbstraction took 1493.90 ms. Allocated memory was 255.9 MB in the beginning and 343.9 MB in the end (delta: 88.1 MB). Free memory was 237.7 MB in the beginning and 272.9 MB in the end (delta: -35.1 MB). Peak memory consumption was 52.8 MB. Max. memory is 16.0 GB. [2021-03-24 13:30:29,246 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 21.18 ms. Allocated memory is still 255.9 MB. Free memory was 236.7 MB in the beginning and 235.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 15.67 ms. Allocated memory is still 255.9 MB. Free memory was 235.3 MB in the beginning and 234.4 MB in the end (delta: 924.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 302.93 ms. Allocated memory is still 255.9 MB. Free memory was 234.2 MB in the beginning and 237.7 MB in the end (delta: -3.5 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1493.90 ms. Allocated memory was 255.9 MB in the beginning and 343.9 MB in the end (delta: 88.1 MB). Free memory was 237.7 MB in the beginning and 272.9 MB in the end (delta: -35.1 MB). Peak memory consumption was 52.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 191.5ms, 48 PlacesBefore, 42 PlacesAfterwards, 43 TransitionsBefore, 37 TransitionsAfterwards, 818 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 6 TotalNumberOfCompositions, 1916 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 663, positive: 567, positive conditional: 0, positive unconditional: 567, negative: 96, negative conditional: 0, negative unconditional: 96, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 168, positive: 150, positive conditional: 0, positive unconditional: 150, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 168, positive: 150, positive conditional: 0, positive unconditional: 150, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 663, positive: 417, positive conditional: 0, positive unconditional: 417, negative: 78, negative conditional: 0, negative unconditional: 78, unknown: 168, unknown conditional: 0, unknown unconditional: 168] , Statistics on independence cache: Total cache size (in pairs): 95, Positive cache size: 77, Positive conditional cache size: 0, Positive unconditional cache size: 77, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18 - 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 VAL [clk=0, critical=0, delay=1, lock=0, wait=1] [L58] 2 deadline := clk + delay; VAL [clk=0, critical=0, deadline=1, delay=1, lock=0, wait=1] [L59] 2 assume lock == 0; VAL [clk=0, critical=0, deadline=1, delay=1, lock=0, wait=1] [L36] FORK 0 fork 2 Process2(); VAL [clk=0, critical=0, deadline=1, delay=1, lock=0, wait=1] [L78] COND TRUE 3 lock != 2 VAL [clk=0, critical=0, deadline=1, delay=1, lock=0, wait=1] [L79] 3 deadline := clk + delay; VAL [clk=0, critical=0, deadline=1, deadline=1, delay=1, lock=0, wait=1] [L80] 3 assume lock == 0; VAL [clk=0, critical=0, deadline=1, deadline=1, delay=1, lock=0, wait=1] [L60] 2 lock := 1; VAL [clk=0, critical=0, deadline=1, deadline=1, delay=1, lock=1, wait=1] [L61] 2 assume clk <= deadline; VAL [clk=0, critical=0, deadline=1, deadline=1, delay=1, lock=1, wait=1] [L62] 2 deadline := clk + wait; VAL [clk=0, critical=0, deadline=1, deadline=1, delay=1, lock=1, wait=1] [L44] 1 clk := clk + 1; VAL [clk=1, critical=0, deadline=1, deadline=1, delay=1, lock=1, wait=1] [L63] 2 assume clk >= deadline; VAL [clk=1, critical=0, deadline=1, deadline=1, delay=1, lock=1, wait=1] [L64] 2 assume lock == 1; VAL [clk=1, critical=0, deadline=1, deadline=1, delay=1, lock=1, wait=1] [L66] 2 assert critical == 0; VAL [clk=1, critical=0, deadline=1, deadline=1, delay=1, lock=1, wait=1] [L67] 2 critical := 1; VAL [clk=1, critical=1, deadline=1, deadline=1, delay=1, lock=1, wait=1] [L81] 3 lock := 2; VAL [clk=1, critical=1, deadline=1, deadline=1, delay=1, lock=2, wait=1] [L82] 3 assume clk <= deadline; VAL [clk=1, critical=1, deadline=1, deadline=1, delay=1, lock=2, wait=1] [L83] 3 deadline := clk + wait; VAL [clk=1, critical=1, deadline=2, deadline=1, delay=1, lock=2, wait=1] [L44] 1 clk := clk + 1; VAL [clk=2, critical=1, deadline=2, deadline=1, delay=1, lock=2, wait=1] [L84] 3 assume clk >= deadline; VAL [clk=2, critical=1, deadline=2, deadline=1, delay=1, lock=2, wait=1] [L85] 3 assume lock == 2; VAL [clk=2, critical=1, deadline=2, deadline=1, delay=1, lock=2, wait=1] [L87] 3 assert critical == 0; VAL [clk=2, critical=1, deadline=2, deadline=1, delay=1, lock=2, wait=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 42 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 1311.7ms, OverallIterations: 8, TraceHistogramMax: 2, EmptinessCheckTime: 0.0ms, AutomataDifference: 650.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 267.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 78 SDtfs, 29 SDslu, 0 SDs, 0 SdLazy, 88 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 110.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=246occurred 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: 12.6ms SsaConstructionTime, 64.2ms SatisfiabilityAnalysisTime, 156.2ms InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 185 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...