/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/showcase/FischerWithBug.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 23:57:32,099 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 23:57:32,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 23:57:32,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 23:57:32,139 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 23:57:32,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 23:57:32,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 23:57:32,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 23:57:32,151 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 23:57:32,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 23:57:32,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 23:57:32,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 23:57:32,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 23:57:32,159 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 23:57:32,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 23:57:32,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 23:57:32,163 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 23:57:32,164 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 23:57:32,166 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 23:57:32,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 23:57:32,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 23:57:32,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 23:57:32,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 23:57:32,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 23:57:32,181 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-10 23:57:32,184 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 23:57:32,185 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 23:57:32,186 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 23:57:32,187 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 23:57:32,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 23:57:32,188 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 23:57:32,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 23:57:32,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 23:57:32,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 23:57:32,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 23:57:32,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 23:57:32,194 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-06-10 23:57:32,222 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 23:57:32,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 23:57:32,223 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 23:57:32,223 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 23:57:32,223 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 23:57:32,224 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 23:57:32,224 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 23:57:32,224 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 23:57:32,224 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 23:57:32,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 23:57:32,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 23:57:32,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 23:57:32,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 23:57:32,225 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 23:57:32,225 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 23:57:32,225 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 23:57:32,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 23:57:32,226 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 23:57:32,226 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 23:57:32,226 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 23:57:32,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 23:57:32,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 23:57:32,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 23:57:32,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 23:57:32,227 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 23:57:32,227 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 23:57:32,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 23:57:32,227 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 23:57:32,227 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 23:57:32,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 23:57:32,538 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 23:57:32,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 23:57:32,541 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-10 23:57:32,542 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-10 23:57:32,543 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/FischerWithBug.bpl [2021-06-10 23:57:32,543 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/FischerWithBug.bpl' [2021-06-10 23:57:32,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 23:57:32,585 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-10 23:57:32,586 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 23:57:32,587 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 23:57:32,587 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 23:57:32,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:57:32" (1/1) ... [2021-06-10 23:57:32,605 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:57:32" (1/1) ... [2021-06-10 23:57:32,611 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 23:57:32,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 23:57:32,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 23:57:32,613 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 23:57:32,620 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:57:32" (1/1) ... [2021-06-10 23:57:32,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:57:32" (1/1) ... [2021-06-10 23:57:32,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:57:32" (1/1) ... [2021-06-10 23:57:32,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:57:32" (1/1) ... [2021-06-10 23:57:32,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:57:32" (1/1) ... [2021-06-10 23:57:32,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:57:32" (1/1) ... [2021-06-10 23:57:32,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:57:32" (1/1) ... [2021-06-10 23:57:32,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 23:57:32,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 23:57:32,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 23:57:32,633 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 23:57:32,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:57:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 23:57:32,693 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process2 given in one single declaration [2021-06-10 23:57:32,693 INFO L130 BoogieDeclarations]: Found specification of procedure Process2 [2021-06-10 23:57:32,694 INFO L138 BoogieDeclarations]: Found implementation of procedure Process2 [2021-06-10 23:57:32,694 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process1 given in one single declaration [2021-06-10 23:57:32,694 INFO L130 BoogieDeclarations]: Found specification of procedure Process1 [2021-06-10 23:57:32,694 INFO L138 BoogieDeclarations]: Found implementation of procedure Process1 [2021-06-10 23:57:32,694 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-10 23:57:32,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 23:57:32,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 23:57:32,695 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Clock given in one single declaration [2021-06-10 23:57:32,695 INFO L130 BoogieDeclarations]: Found specification of procedure Clock [2021-06-10 23:57:32,695 INFO L138 BoogieDeclarations]: Found implementation of procedure Clock [2021-06-10 23:57:32,696 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 23:57:32,861 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 23:57:32,862 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-06-10 23:57:32,863 INFO L202 PluginConnector]: Adding new model FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 11:57:32 BoogieIcfgContainer [2021-06-10 23:57:32,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 23:57:32,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 23:57:32,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 23:57:32,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 23:57:32,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:57:32" (1/2) ... [2021-06-10 23:57:32,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@944cfac and model type FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 11:57:32, skipping insertion in model container [2021-06-10 23:57:32,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 11:57:32" (2/2) ... [2021-06-10 23:57:32,869 INFO L111 eAbstractionObserver]: Analyzing ICFG FischerWithBug.bpl [2021-06-10 23:57:32,874 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 23:57:32,877 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-06-10 23:57:32,877 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 23:57:32,916 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:57:32,916 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:57:32,917 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:57:32,917 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:57:32,917 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:57:32,918 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:57:32,918 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:57:32,918 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:57:32,919 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:57:32,919 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:57:32,920 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:57:32,920 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:57:32,921 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:57:32,921 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:57:32,921 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:57:32,921 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:57:32,942 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:57:32,944 WARN L313 ript$VariableManager]: TermVariabe Process2Thread1of1ForFork2_deadline not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:57:32,945 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-10 23:57:32,978 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-06-10 23:57:33,017 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 23:57:33,018 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 23:57:33,018 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 23:57:33,018 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 23:57:33,018 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 23:57:33,018 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 23:57:33,018 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 23:57:33,018 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 23:57:33,027 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 51 places, 46 transitions, 107 flow [2021-06-10 23:57:33,052 INFO L129 PetriNetUnfolder]: 5/43 cut-off events. [2021-06-10 23:57:33,052 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 23:57:33,056 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 43 events. 5/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 109 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-06-10 23:57:33,056 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 46 transitions, 107 flow [2021-06-10 23:57:33,061 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 43 transitions, 95 flow [2021-06-10 23:57:33,062 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-10 23:57:33,074 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 43 transitions, 95 flow [2021-06-10 23:57:33,077 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 43 transitions, 95 flow [2021-06-10 23:57:33,080 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 43 transitions, 95 flow [2021-06-10 23:57:33,093 INFO L129 PetriNetUnfolder]: 5/43 cut-off events. [2021-06-10 23:57:33,093 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 23:57:33,095 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. [2021-06-10 23:57:33,107 INFO L151 LiptonReduction]: Number of co-enabled transitions 818 [2021-06-10 23:57:33,226 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:33,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:57:33,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:33,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:57:33,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:33,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:57:33,737 INFO L163 LiptonReduction]: Checked pairs total: 1910 [2021-06-10 23:57:33,737 INFO L165 LiptonReduction]: Total number of compositions: 12 [2021-06-10 23:57:33,744 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 683 [2021-06-10 23:57:33,764 INFO L129 PetriNetUnfolder]: 1/11 cut-off events. [2021-06-10 23:57:33,764 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 23:57:33,764 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:57:33,765 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-06-10 23:57:33,765 INFO L428 AbstractCegarLoop]: === Iteration 1 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-10 23:57:33,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:57:33,770 INFO L82 PathProgramCache]: Analyzing trace with hash 176055231, now seen corresponding path program 1 times [2021-06-10 23:57:33,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:57:33,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74517227] [2021-06-10 23:57:33,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:57:33,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:57:33,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:33,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 23:57:33,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:57:33,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74517227] [2021-06-10 23:57:33,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:57:33,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 23:57:33,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061286075] [2021-06-10 23:57:33,868 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 23:57:33,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:57:33,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 23:57:33,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 23:57:33,881 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 58 [2021-06-10 23:57:33,882 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:33,882 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:57:33,883 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 58 [2021-06-10 23:57:33,883 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 23:57:33,929 INFO L129 PetriNetUnfolder]: 31/123 cut-off events. [2021-06-10 23:57:33,929 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 23:57:33,930 INFO L84 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 123 events. 31/123 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 463 event pairs, 4 based on Foata normal form. 41/137 useless extension candidates. Maximal degree in co-relation 169. Up to 30 conditions per place. [2021-06-10 23:57:33,932 INFO L132 encePairwiseOnDemand]: 46/58 looper letters, 8 selfloop transitions, 7 changer transitions 0/38 dead transitions. [2021-06-10 23:57:33,932 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 38 transitions, 115 flow [2021-06-10 23:57:33,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 23:57:33,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 23:57:33,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2021-06-10 23:57:33,942 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8390804597701149 [2021-06-10 23:57:33,943 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2021-06-10 23:57:33,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2021-06-10 23:57:33,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 23:57:33,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2021-06-10 23:57:33,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:33,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:33,952 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:33,953 INFO L185 Difference]: Start difference. First operand has 40 places, 35 transitions, 79 flow. Second operand 3 states and 146 transitions. [2021-06-10 23:57:33,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 38 transitions, 115 flow [2021-06-10 23:57:33,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 38 transitions, 112 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-10 23:57:33,958 INFO L241 Difference]: Finished difference. Result has 38 places, 38 transitions, 126 flow [2021-06-10 23:57:33,959 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=38, PETRI_TRANSITIONS=38} [2021-06-10 23:57:33,960 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2021-06-10 23:57:33,960 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 38 transitions, 126 flow [2021-06-10 23:57:33,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:33,961 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:57:33,961 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 23:57:33,961 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 23:57:33,961 INFO L428 AbstractCegarLoop]: === Iteration 2 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-10 23:57:33,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:57:33,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1037054279, now seen corresponding path program 1 times [2021-06-10 23:57:33,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:57:33,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652862869] [2021-06-10 23:57:33,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:57:33,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:57:33,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:33,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:57:33,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:33,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 23:57:33,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:33,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:57:33,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:57:33,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652862869] [2021-06-10 23:57:33,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:57:33,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 23:57:33,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907267131] [2021-06-10 23:57:33,982 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 23:57:33,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:57:33,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 23:57:33,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 23:57:33,984 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 58 [2021-06-10 23:57:33,984 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 38 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:33,984 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:57:33,984 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 58 [2021-06-10 23:57:33,985 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 23:57:34,047 INFO L129 PetriNetUnfolder]: 117/317 cut-off events. [2021-06-10 23:57:34,047 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2021-06-10 23:57:34,050 INFO L84 FinitePrefix]: Finished finitePrefix Result has 664 conditions, 317 events. 117/317 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1650 event pairs, 21 based on Foata normal form. 6/266 useless extension candidates. Maximal degree in co-relation 654. Up to 127 conditions per place. [2021-06-10 23:57:34,052 INFO L132 encePairwiseOnDemand]: 47/58 looper letters, 12 selfloop transitions, 8 changer transitions 0/44 dead transitions. [2021-06-10 23:57:34,052 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 44 transitions, 178 flow [2021-06-10 23:57:34,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 23:57:34,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 23:57:34,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2021-06-10 23:57:34,054 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7183908045977011 [2021-06-10 23:57:34,054 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 125 transitions. [2021-06-10 23:57:34,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 125 transitions. [2021-06-10 23:57:34,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 23:57:34,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 125 transitions. [2021-06-10 23:57:34,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:34,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:34,057 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:34,057 INFO L185 Difference]: Start difference. First operand has 38 places, 38 transitions, 126 flow. Second operand 3 states and 125 transitions. [2021-06-10 23:57:34,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 44 transitions, 178 flow [2021-06-10 23:57:34,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 44 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 23:57:34,060 INFO L241 Difference]: Finished difference. Result has 40 places, 43 transitions, 170 flow [2021-06-10 23:57:34,060 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=40, PETRI_TRANSITIONS=43} [2021-06-10 23:57:34,061 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2021-06-10 23:57:34,061 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 43 transitions, 170 flow [2021-06-10 23:57:34,061 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:34,061 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:57:34,062 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 23:57:34,062 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 23:57:34,062 INFO L428 AbstractCegarLoop]: === Iteration 3 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-10 23:57:34,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:57:34,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1051353959, now seen corresponding path program 2 times [2021-06-10 23:57:34,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:57:34,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765126552] [2021-06-10 23:57:34,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:57:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:57:34,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:34,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:57:34,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:34,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 23:57:34,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:34,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:57:34,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:57:34,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765126552] [2021-06-10 23:57:34,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:57:34,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 23:57:34,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753045671] [2021-06-10 23:57:34,080 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 23:57:34,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:57:34,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 23:57:34,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 23:57:34,081 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 58 [2021-06-10 23:57:34,081 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 43 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:34,082 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:57:34,082 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 58 [2021-06-10 23:57:34,082 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 23:57:34,138 INFO L129 PetriNetUnfolder]: 104/305 cut-off events. [2021-06-10 23:57:34,139 INFO L130 PetriNetUnfolder]: For 121/145 co-relation queries the response was YES. [2021-06-10 23:57:34,140 INFO L84 FinitePrefix]: Finished finitePrefix Result has 747 conditions, 305 events. 104/305 cut-off events. For 121/145 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1433 event pairs, 14 based on Foata normal form. 26/293 useless extension candidates. Maximal degree in co-relation 737. Up to 133 conditions per place. [2021-06-10 23:57:34,142 INFO L132 encePairwiseOnDemand]: 47/58 looper letters, 14 selfloop transitions, 9 changer transitions 0/47 dead transitions. [2021-06-10 23:57:34,142 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 47 transitions, 224 flow [2021-06-10 23:57:34,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 23:57:34,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 23:57:34,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 127 transitions. [2021-06-10 23:57:34,144 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7298850574712644 [2021-06-10 23:57:34,144 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 127 transitions. [2021-06-10 23:57:34,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 127 transitions. [2021-06-10 23:57:34,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 23:57:34,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 127 transitions. [2021-06-10 23:57:34,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:34,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:34,146 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:34,146 INFO L185 Difference]: Start difference. First operand has 40 places, 43 transitions, 170 flow. Second operand 3 states and 127 transitions. [2021-06-10 23:57:34,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 47 transitions, 224 flow [2021-06-10 23:57:34,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 47 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 23:57:34,149 INFO L241 Difference]: Finished difference. Result has 42 places, 45 transitions, 204 flow [2021-06-10 23:57:34,149 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=42, PETRI_TRANSITIONS=45} [2021-06-10 23:57:34,150 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 2 predicate places. [2021-06-10 23:57:34,150 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 45 transitions, 204 flow [2021-06-10 23:57:34,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:34,150 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:57:34,150 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 23:57:34,150 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 23:57:34,150 INFO L428 AbstractCegarLoop]: === Iteration 4 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-10 23:57:34,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:57:34,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1267677509, now seen corresponding path program 1 times [2021-06-10 23:57:34,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:57:34,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340650973] [2021-06-10 23:57:34,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:57:34,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:57:34,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:34,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:57:34,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:34,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 23:57:34,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:34,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:57:34,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:57:34,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340650973] [2021-06-10 23:57:34,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:57:34,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 23:57:34,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190057481] [2021-06-10 23:57:34,171 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 23:57:34,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:57:34,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 23:57:34,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 23:57:34,172 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 58 [2021-06-10 23:57:34,172 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 45 transitions, 204 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) [2021-06-10 23:57:34,172 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:57:34,172 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 58 [2021-06-10 23:57:34,173 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 23:57:34,218 INFO L129 PetriNetUnfolder]: 114/348 cut-off events. [2021-06-10 23:57:34,218 INFO L130 PetriNetUnfolder]: For 200/227 co-relation queries the response was YES. [2021-06-10 23:57:34,220 INFO L84 FinitePrefix]: Finished finitePrefix Result has 954 conditions, 348 events. 114/348 cut-off events. For 200/227 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1729 event pairs, 14 based on Foata normal form. 5/312 useless extension candidates. Maximal degree in co-relation 943. Up to 108 conditions per place. [2021-06-10 23:57:34,222 INFO L132 encePairwiseOnDemand]: 48/58 looper letters, 16 selfloop transitions, 12 changer transitions 0/52 dead transitions. [2021-06-10 23:57:34,222 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 52 transitions, 292 flow [2021-06-10 23:57:34,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 23:57:34,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 23:57:34,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2021-06-10 23:57:34,224 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7241379310344828 [2021-06-10 23:57:34,224 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 126 transitions. [2021-06-10 23:57:34,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 126 transitions. [2021-06-10 23:57:34,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 23:57:34,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 126 transitions. [2021-06-10 23:57:34,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:34,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:34,226 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:34,226 INFO L185 Difference]: Start difference. First operand has 42 places, 45 transitions, 204 flow. Second operand 3 states and 126 transitions. [2021-06-10 23:57:34,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 52 transitions, 292 flow [2021-06-10 23:57:34,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 270 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 23:57:34,229 INFO L241 Difference]: Finished difference. Result has 44 places, 50 transitions, 270 flow [2021-06-10 23:57:34,229 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=270, PETRI_PLACES=44, PETRI_TRANSITIONS=50} [2021-06-10 23:57:34,229 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2021-06-10 23:57:34,230 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 50 transitions, 270 flow [2021-06-10 23:57:34,230 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) [2021-06-10 23:57:34,230 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:57:34,230 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 23:57:34,230 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 23:57:34,230 INFO L428 AbstractCegarLoop]: === Iteration 5 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-10 23:57:34,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:57:34,231 INFO L82 PathProgramCache]: Analyzing trace with hash 628495675, now seen corresponding path program 2 times [2021-06-10 23:57:34,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:57:34,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683548071] [2021-06-10 23:57:34,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:57:34,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:57:34,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:34,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:57:34,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:34,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 23:57:34,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:34,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:57:34,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:57:34,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683548071] [2021-06-10 23:57:34,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:57:34,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 23:57:34,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108722546] [2021-06-10 23:57:34,248 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 23:57:34,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:57:34,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 23:57:34,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 23:57:34,249 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 58 [2021-06-10 23:57:34,249 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 50 transitions, 270 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) [2021-06-10 23:57:34,249 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:57:34,249 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 58 [2021-06-10 23:57:34,249 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 23:57:34,296 INFO L129 PetriNetUnfolder]: 101/332 cut-off events. [2021-06-10 23:57:34,296 INFO L130 PetriNetUnfolder]: For 421/450 co-relation queries the response was YES. [2021-06-10 23:57:34,298 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1039 conditions, 332 events. 101/332 cut-off events. For 421/450 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1576 event pairs, 15 based on Foata normal form. 17/305 useless extension candidates. Maximal degree in co-relation 1027. Up to 95 conditions per place. [2021-06-10 23:57:34,300 INFO L132 encePairwiseOnDemand]: 48/58 looper letters, 16 selfloop transitions, 10 changer transitions 0/50 dead transitions. [2021-06-10 23:57:34,300 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 50 transitions, 308 flow [2021-06-10 23:57:34,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 23:57:34,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 23:57:34,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 128 transitions. [2021-06-10 23:57:34,301 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.735632183908046 [2021-06-10 23:57:34,302 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 128 transitions. [2021-06-10 23:57:34,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 128 transitions. [2021-06-10 23:57:34,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 23:57:34,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 128 transitions. [2021-06-10 23:57:34,302 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) [2021-06-10 23:57:34,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:34,303 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:34,303 INFO L185 Difference]: Start difference. First operand has 44 places, 50 transitions, 270 flow. Second operand 3 states and 128 transitions. [2021-06-10 23:57:34,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 50 transitions, 308 flow [2021-06-10 23:57:34,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 50 transitions, 288 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 23:57:34,307 INFO L241 Difference]: Finished difference. Result has 44 places, 48 transitions, 252 flow [2021-06-10 23:57:34,307 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=44, PETRI_TRANSITIONS=48} [2021-06-10 23:57:34,307 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2021-06-10 23:57:34,307 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 48 transitions, 252 flow [2021-06-10 23:57:34,308 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) [2021-06-10 23:57:34,308 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:57:34,308 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 23:57:34,308 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 23:57:34,308 INFO L428 AbstractCegarLoop]: === Iteration 6 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-10 23:57:34,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:57:34,309 INFO L82 PathProgramCache]: Analyzing trace with hash 891183984, now seen corresponding path program 1 times [2021-06-10 23:57:34,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:57:34,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266630516] [2021-06-10 23:57:34,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:57:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:57:34,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:34,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 23:57:34,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:34,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 23:57:34,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:34,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:57:34,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:57:34,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266630516] [2021-06-10 23:57:34,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:57:34,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 23:57:34,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947942678] [2021-06-10 23:57:34,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 23:57:34,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:57:34,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 23:57:34,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 23:57:34,351 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 58 [2021-06-10 23:57:34,351 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 48 transitions, 252 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) [2021-06-10 23:57:34,352 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:57:34,352 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 58 [2021-06-10 23:57:34,352 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 23:57:34,448 INFO L129 PetriNetUnfolder]: 251/542 cut-off events. [2021-06-10 23:57:34,448 INFO L130 PetriNetUnfolder]: For 396/412 co-relation queries the response was YES. [2021-06-10 23:57:34,451 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1459 conditions, 542 events. 251/542 cut-off events. For 396/412 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2281 event pairs, 36 based on Foata normal form. 31/554 useless extension candidates. Maximal degree in co-relation 1446. Up to 288 conditions per place. [2021-06-10 23:57:34,454 INFO L132 encePairwiseOnDemand]: 53/58 looper letters, 19 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2021-06-10 23:57:34,454 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 55 transitions, 326 flow [2021-06-10 23:57:34,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 23:57:34,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 23:57:34,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2021-06-10 23:57:34,456 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6077586206896551 [2021-06-10 23:57:34,456 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 141 transitions. [2021-06-10 23:57:34,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 141 transitions. [2021-06-10 23:57:34,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 23:57:34,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 141 transitions. [2021-06-10 23:57:34,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:34,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:34,458 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:34,458 INFO L185 Difference]: Start difference. First operand has 44 places, 48 transitions, 252 flow. Second operand 4 states and 141 transitions. [2021-06-10 23:57:34,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 55 transitions, 326 flow [2021-06-10 23:57:34,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 55 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 23:57:34,462 INFO L241 Difference]: Finished difference. Result has 47 places, 49 transitions, 258 flow [2021-06-10 23:57:34,462 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=43, 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=258, PETRI_PLACES=47, PETRI_TRANSITIONS=49} [2021-06-10 23:57:34,462 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 7 predicate places. [2021-06-10 23:57:34,462 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 49 transitions, 258 flow [2021-06-10 23:57:34,462 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) [2021-06-10 23:57:34,463 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:57:34,463 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 23:57:34,463 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 23:57:34,463 INFO L428 AbstractCegarLoop]: === Iteration 7 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-10 23:57:34,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:57:34,463 INFO L82 PathProgramCache]: Analyzing trace with hash -152615977, now seen corresponding path program 1 times [2021-06-10 23:57:34,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:57:34,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77357350] [2021-06-10 23:57:34,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:57:34,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:57:34,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:34,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 23:57:34,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:34,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 23:57:34,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:34,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:57:34,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:57:34,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77357350] [2021-06-10 23:57:34,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:57:34,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 23:57:34,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472776622] [2021-06-10 23:57:34,494 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 23:57:34,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:57:34,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 23:57:34,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 23:57:34,496 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 58 [2021-06-10 23:57:34,496 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 49 transitions, 258 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) [2021-06-10 23:57:34,496 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:57:34,496 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 58 [2021-06-10 23:57:34,496 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 23:57:34,582 INFO L129 PetriNetUnfolder]: 264/581 cut-off events. [2021-06-10 23:57:34,582 INFO L130 PetriNetUnfolder]: For 472/489 co-relation queries the response was YES. [2021-06-10 23:57:34,585 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1738 conditions, 581 events. 264/581 cut-off events. For 472/489 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2461 event pairs, 39 based on Foata normal form. 34/596 useless extension candidates. Maximal degree in co-relation 1723. Up to 321 conditions per place. [2021-06-10 23:57:34,588 INFO L132 encePairwiseOnDemand]: 53/58 looper letters, 16 selfloop transitions, 3 changer transitions 5/57 dead transitions. [2021-06-10 23:57:34,588 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 57 transitions, 347 flow [2021-06-10 23:57:34,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 23:57:34,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 23:57:34,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2021-06-10 23:57:34,590 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6077586206896551 [2021-06-10 23:57:34,590 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 141 transitions. [2021-06-10 23:57:34,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 141 transitions. [2021-06-10 23:57:34,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 23:57:34,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 141 transitions. [2021-06-10 23:57:34,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:34,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:34,592 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:34,592 INFO L185 Difference]: Start difference. First operand has 47 places, 49 transitions, 258 flow. Second operand 4 states and 141 transitions. [2021-06-10 23:57:34,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 57 transitions, 347 flow [2021-06-10 23:57:34,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 57 transitions, 337 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-06-10 23:57:34,595 INFO L241 Difference]: Finished difference. Result has 49 places, 50 transitions, 272 flow [2021-06-10 23:57:34,595 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=45, 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=272, PETRI_PLACES=49, PETRI_TRANSITIONS=50} [2021-06-10 23:57:34,595 INFO L343 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2021-06-10 23:57:34,596 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 50 transitions, 272 flow [2021-06-10 23:57:34,596 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) [2021-06-10 23:57:34,596 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:57:34,596 INFO L263 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 23:57:34,596 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 23:57:34,596 INFO L428 AbstractCegarLoop]: === Iteration 8 === [Process1Err0ASSERT_VIOLATIONASSERT, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process2Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-10 23:57:34,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:57:34,597 INFO L82 PathProgramCache]: Analyzing trace with hash -2141129710, now seen corresponding path program 2 times [2021-06-10 23:57:34,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:57:34,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244584441] [2021-06-10 23:57:34,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:57:34,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-10 23:57:34,646 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-10 23:57:34,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-10 23:57:34,656 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-10 23:57:34,668 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-10 23:57:34,669 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-10 23:57:34,669 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-10 23:57:34,692 INFO L202 PluginConnector]: Adding new model FischerWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 11:57:34 BasicIcfg [2021-06-10 23:57:34,692 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 23:57:34,693 INFO L168 Benchmark]: Toolchain (without parser) took 2107.58 ms. Allocated memory is still 375.4 MB. Free memory was 355.3 MB in the beginning and 356.4 MB in the end (delta: -1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 23:57:34,693 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 375.4 MB. Free memory was 356.4 MB in the beginning and 356.3 MB in the end (delta: 71.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 23:57:34,696 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.17 ms. Allocated memory is still 375.4 MB. Free memory was 355.2 MB in the beginning and 353.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 23:57:34,699 INFO L168 Benchmark]: Boogie Preprocessor took 19.35 ms. Allocated memory is still 375.4 MB. Free memory was 353.7 MB in the beginning and 352.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 23:57:34,699 INFO L168 Benchmark]: RCFGBuilder took 230.34 ms. Allocated memory is still 375.4 MB. Free memory was 352.7 MB in the beginning and 340.5 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-06-10 23:57:34,699 INFO L168 Benchmark]: TraceAbstraction took 1827.43 ms. Allocated memory is still 375.4 MB. Free memory was 340.0 MB in the beginning and 356.4 MB in the end (delta: -16.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 23:57:34,704 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 0.13 ms. Allocated memory is still 375.4 MB. Free memory was 356.4 MB in the beginning and 356.3 MB in the end (delta: 71.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 25.17 ms. Allocated memory is still 375.4 MB. Free memory was 355.2 MB in the beginning and 353.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 19.35 ms. Allocated memory is still 375.4 MB. Free memory was 353.7 MB in the beginning and 352.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 230.34 ms. Allocated memory is still 375.4 MB. Free memory was 352.7 MB in the beginning and 340.5 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1827.43 ms. Allocated memory is still 375.4 MB. Free memory was 340.0 MB in the beginning and 356.4 MB in the end (delta: -16.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 660.3ms, 48 PlacesBefore, 40 PlacesAfterwards, 43 TransitionsBefore, 35 TransitionsAfterwards, 818 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 9 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 12 TotalNumberOfCompositions, 1910 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 836, positive: 742, positive conditional: 0, positive unconditional: 742, negative: 94, negative conditional: 0, negative unconditional: 94, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 418, positive: 385, positive conditional: 0, positive unconditional: 385, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 418, positive: 385, positive conditional: 0, positive unconditional: 385, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 418, positive: 364, positive conditional: 0, positive unconditional: 364, negative: 54, negative conditional: 0, negative unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 54, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 229, positive: 99, positive conditional: 0, positive unconditional: 99, negative: 129, negative conditional: 0, negative unconditional: 129, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 836, positive: 357, positive conditional: 0, positive unconditional: 357, negative: 61, negative conditional: 0, negative unconditional: 61, unknown: 418, unknown conditional: 0, unknown unconditional: 418] , Statistics on independence cache: Total cache size (in pairs): 502, Positive cache size: 469, Positive conditional cache size: 0, Positive unconditional cache size: 469, Negative cache size: 33, Negative conditional cache size: 0, Negative unconditional cache size: 33 - CounterExampleResult [Line: 87]: assertion can be violated assertion can be violated We found a FailurePath: [L28] 0 critical := 0; [L29] 0 clk := 0; [L30] 0 assume wait >= 1; [L33] 0 assume wait >= delay; VAL [clk=0, critical=0, delay=1, wait=1] [L34] FORK 0 fork 0 Clock(); VAL [clk=0, critical=0, delay=1, wait=1] [L35] FORK 0 fork 1 Process1(); VAL [clk=0, critical=0, delay=1, wait=1] [L57] COND TRUE 2 lock != 1 [L58] 2 deadline := clk + delay; VAL [clk=0, critical=0, deadline=1, delay=1, lock=0, wait=1] [L59] 2 assume lock == 0; VAL [clk=0, critical=0, deadline=1, delay=1, lock=0, wait=1] [L36] FORK 0 fork 2 Process2(); VAL [clk=0, critical=0, deadline=1, delay=1, lock=0, wait=1] [L78] COND TRUE 3 lock != 2 [L79] 3 deadline := clk + delay; VAL [clk=0, critical=0, deadline=1, deadline=1, delay=1, lock=0, wait=1] [L80] 3 assume lock == 0; VAL [clk=0, critical=0, deadline=1, deadline=1, delay=1, lock=0, wait=1] [L60] 2 lock := 1; [L61] 2 assume clk <= deadline; VAL [clk=0, critical=0, deadline=1, deadline=1, delay=1, lock=1, wait=1] [L62] 2 deadline := clk + wait; VAL [clk=0, critical=0, deadline=1, deadline=1, delay=1, lock=1, wait=1] [L44] 1 clk := clk + 1; VAL [clk=1, critical=0, deadline=1, deadline=1, delay=1, lock=1, wait=1] [L63] 2 assume clk >= deadline; [L64] 2 assume lock == 1; VAL [clk=1, critical=0, deadline=1, deadline=1, delay=1, lock=1, wait=1] [L81] 3 lock := 2; [L82] 3 assume clk <= deadline; VAL [clk=1, critical=0, deadline=1, deadline=1, delay=1, lock=2, wait=1] [L83] 3 deadline := clk + wait; VAL [clk=1, critical=0, deadline=2, deadline=1, delay=1, lock=2, wait=1] [L44] 1 clk := clk + 1; VAL [clk=2, critical=0, deadline=2, deadline=1, delay=1, lock=2, wait=1] [L84] 3 assume clk >= deadline; [L85] 3 assume lock == 2; VAL [clk=2, critical=0, deadline=2, deadline=1, delay=1, lock=2, wait=1] [L66] 2 assert critical == 0; VAL [clk=2, critical=0, deadline=2, deadline=1, delay=1, lock=2, wait=1] [L67] 2 critical := 1; 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: 2.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 1656.1ms, OverallIterations: 8, TraceHistogramMax: 2, EmptinessCheckTime: 0.0ms, AutomataDifference: 560.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 743.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 93 SDtfs, 35 SDslu, 0 SDs, 0 SdLazy, 99 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 131.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=272occurred in iteration=7, 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: 7.9ms SsaConstructionTime, 84.6ms SatisfiabilityAnalysisTime, 118.4ms InterpolantComputationTime, 103 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 77 ConstructedInterpolants, 0 QuantifiedInterpolants, 149 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...