/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-RepeatedSemanticLbeWithDisjunctivePredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/showcase/PetersonWithBug.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-11 18:55:01,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-11 18:55:01,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-11 18:55:01,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-11 18:55:01,170 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-11 18:55:01,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-11 18:55:01,175 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-11 18:55:01,180 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-11 18:55:01,182 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-11 18:55:01,187 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-11 18:55:01,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-11 18:55:01,189 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-11 18:55:01,189 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-11 18:55:01,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-11 18:55:01,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-11 18:55:01,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-11 18:55:01,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-11 18:55:01,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-11 18:55:01,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-11 18:55:01,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-11 18:55:01,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-11 18:55:01,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-11 18:55:01,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-11 18:55:01,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-11 18:55:01,215 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-11 18:55:01,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-11 18:55:01,215 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-11 18:55:01,217 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-11 18:55:01,217 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-11 18:55:01,218 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-11 18:55:01,218 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-11 18:55:01,219 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-11 18:55:01,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-11 18:55:01,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-11 18:55:01,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-11 18:55:01,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-11 18:55:01,222 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-11 18:55:01,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-11 18:55:01,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-11 18:55:01,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-11 18:55:01,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-11 18:55:01,228 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-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2021-06-11 18:55:01,263 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-11 18:55:01,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-11 18:55:01,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-11 18:55:01,266 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-11 18:55:01,266 INFO L138 SettingsManager]: * Use SBE=true [2021-06-11 18:55:01,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-11 18:55:01,267 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-11 18:55:01,267 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-11 18:55:01,267 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-11 18:55:01,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-11 18:55:01,268 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-11 18:55:01,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-11 18:55:01,268 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-11 18:55:01,268 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-11 18:55:01,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-11 18:55:01,268 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-11 18:55:01,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-11 18:55:01,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-11 18:55:01,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-11 18:55:01,269 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-11 18:55:01,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-11 18:55:01,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-11 18:55:01,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-11 18:55:01,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-11 18:55:01,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-11 18:55:01,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-11 18:55:01,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-11 18:55:01,270 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES_DISJUNCTIVE [2021-06-11 18:55:01,270 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-11 18:55:01,270 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-11 18:55:01,270 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-11 18:55:01,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-11 18:55:01,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-11 18:55:01,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-11 18:55:01,599 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-11 18:55:01,600 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-11 18:55:01,601 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/PetersonWithBug.bpl [2021-06-11 18:55:01,601 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/showcase/PetersonWithBug.bpl' [2021-06-11 18:55:01,631 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-11 18:55:01,632 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-11 18:55:01,633 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-11 18:55:01,633 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-11 18:55:01,633 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-11 18:55:01,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:55:01" (1/1) ... [2021-06-11 18:55:01,652 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:55:01" (1/1) ... [2021-06-11 18:55:01,661 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-11 18:55:01,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-11 18:55:01,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-11 18:55:01,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-11 18:55:01,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:55:01" (1/1) ... [2021-06-11 18:55:01,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:55:01" (1/1) ... [2021-06-11 18:55:01,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:55:01" (1/1) ... [2021-06-11 18:55:01,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:55:01" (1/1) ... [2021-06-11 18:55:01,674 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:55:01" (1/1) ... [2021-06-11 18:55:01,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:55:01" (1/1) ... [2021-06-11 18:55:01,678 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:55:01" (1/1) ... [2021-06-11 18:55:01,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-11 18:55:01,680 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-11 18:55:01,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-11 18:55:01,681 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-11 18:55:01,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:55:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-11 18:55:01,747 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process0 given in one single declaration [2021-06-11 18:55:01,749 INFO L130 BoogieDeclarations]: Found specification of procedure Process0 [2021-06-11 18:55:01,749 INFO L138 BoogieDeclarations]: Found implementation of procedure Process0 [2021-06-11 18:55:01,749 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Process1 given in one single declaration [2021-06-11 18:55:01,750 INFO L130 BoogieDeclarations]: Found specification of procedure Process1 [2021-06-11 18:55:01,750 INFO L138 BoogieDeclarations]: Found implementation of procedure Process1 [2021-06-11 18:55:01,750 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-11 18:55:01,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-11 18:55:01,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-11 18:55:01,751 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-11 18:55:01,867 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-11 18:55:01,868 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-06-11 18:55:01,869 INFO L202 PluginConnector]: Adding new model PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 06:55:01 BoogieIcfgContainer [2021-06-11 18:55:01,869 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-11 18:55:01,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-11 18:55:01,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-11 18:55:01,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-11 18:55:01,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.06 06:55:01" (1/2) ... [2021-06-11 18:55:01,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@585a821f and model type PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.06 06:55:01, skipping insertion in model container [2021-06-11 18:55:01,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 06:55:01" (2/2) ... [2021-06-11 18:55:01,875 INFO L111 eAbstractionObserver]: Analyzing ICFG PetersonWithBug.bpl [2021-06-11 18:55:01,880 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-11 18:55:01,883 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-06-11 18:55:01,884 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-11 18:55:01,906 WARN L313 ript$VariableManager]: TermVariabe Process0Thread1of1ForFork0_x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 18:55:01,906 WARN L313 ript$VariableManager]: TermVariabe Process0Thread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 18:55:01,909 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 18:55:01,910 WARN L313 ript$VariableManager]: TermVariabe Process1Thread1of1ForFork1_b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 18:55:01,911 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-11 18:55:01,927 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-06-11 18:55:01,945 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 18:55:01,945 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 18:55:01,945 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 18:55:01,945 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 18:55:01,945 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 18:55:01,945 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 18:55:01,946 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 18:55:01,946 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 18:55:01,956 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 26 transitions, 62 flow [2021-06-11 18:55:01,982 INFO L129 PetriNetUnfolder]: 2/24 cut-off events. [2021-06-11 18:55:01,983 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 18:55:01,987 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 24 events. 2/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 40 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2021-06-11 18:55:01,987 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 26 transitions, 62 flow [2021-06-11 18:55:01,990 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 24 transitions, 54 flow [2021-06-11 18:55:01,992 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 18:55:02,016 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 24 transitions, 54 flow [2021-06-11 18:55:02,021 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 24 transitions, 54 flow [2021-06-11 18:55:02,024 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 24 transitions, 54 flow [2021-06-11 18:55:02,032 INFO L129 PetriNetUnfolder]: 2/24 cut-off events. [2021-06-11 18:55:02,032 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 18:55:02,033 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 24 events. 2/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 47 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2021-06-11 18:55:02,035 INFO L151 LiptonReduction]: Number of co-enabled transitions 260 [2021-06-11 18:55:02,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:55:02,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 18:55:02,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:55:02,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 18:55:02,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:55:02,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 18:55:02,558 INFO L163 LiptonReduction]: Checked pairs total: 578 [2021-06-11 18:55:02,559 INFO L165 LiptonReduction]: Total number of compositions: 8 [2021-06-11 18:55:02,561 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 570 [2021-06-11 18:55:02,583 INFO L129 PetriNetUnfolder]: 0/5 cut-off events. [2021-06-11 18:55:02,583 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 18:55:02,583 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 18:55:02,584 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-06-11 18:55:02,584 INFO L428 AbstractCegarLoop]: === Iteration 1 === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process0Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-11 18:55:02,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 18:55:02,591 INFO L82 PathProgramCache]: Analyzing trace with hash 2397531, now seen corresponding path program 1 times [2021-06-11 18:55:02,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 18:55:02,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877855002] [2021-06-11 18:55:02,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 18:55:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 18:55:02,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:55:02,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 18:55:02,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 18:55:02,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877855002] [2021-06-11 18:55:02,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 18:55:02,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-11 18:55:02,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084226656] [2021-06-11 18:55:02,698 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 18:55:02,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 18:55:02,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 18:55:02,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 18:55:02,713 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 34 [2021-06-11 18:55:02,715 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 18 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:55:02,715 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 18:55:02,715 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 34 [2021-06-11 18:55:02,716 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 18:55:02,759 INFO L129 PetriNetUnfolder]: 19/57 cut-off events. [2021-06-11 18:55:02,759 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 18:55:02,760 INFO L84 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 57 events. 19/57 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 133 event pairs, 1 based on Foata normal form. 12/65 useless extension candidates. Maximal degree in co-relation 96. Up to 26 conditions per place. [2021-06-11 18:55:02,763 INFO L132 encePairwiseOnDemand]: 23/34 looper letters, 8 selfloop transitions, 7 changer transitions 0/22 dead transitions. [2021-06-11 18:55:02,763 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 22 transitions, 80 flow [2021-06-11 18:55:02,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 18:55:02,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 18:55:02,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2021-06-11 18:55:02,775 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7058823529411765 [2021-06-11 18:55:02,776 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 72 transitions. [2021-06-11 18:55:02,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 72 transitions. [2021-06-11 18:55:02,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 18:55:02,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 72 transitions. [2021-06-11 18:55:02,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:55:02,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:55:02,785 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:55:02,787 INFO L185 Difference]: Start difference. First operand has 23 places, 18 transitions, 42 flow. Second operand 3 states and 72 transitions. [2021-06-11 18:55:02,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 22 transitions, 80 flow [2021-06-11 18:55:02,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 22 transitions, 78 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-11 18:55:02,796 INFO L241 Difference]: Finished difference. Result has 23 places, 22 transitions, 92 flow [2021-06-11 18:55:02,797 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=23, PETRI_TRANSITIONS=22} [2021-06-11 18:55:02,798 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 0 predicate places. [2021-06-11 18:55:02,798 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 18:55:02,798 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 23 places, 22 transitions, 92 flow [2021-06-11 18:55:02,799 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 23 places, 22 transitions, 92 flow [2021-06-11 18:55:02,799 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 23 places, 22 transitions, 92 flow [2021-06-11 18:55:02,818 INFO L129 PetriNetUnfolder]: 19/57 cut-off events. [2021-06-11 18:55:02,818 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-06-11 18:55:02,819 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 57 events. 19/57 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 138 event pairs, 1 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 117. Up to 26 conditions per place. [2021-06-11 18:55:02,820 INFO L151 LiptonReduction]: Number of co-enabled transitions 86 [2021-06-11 18:55:02,830 INFO L163 LiptonReduction]: Checked pairs total: 75 [2021-06-11 18:55:02,830 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 18:55:02,830 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 32 [2021-06-11 18:55:02,832 INFO L480 AbstractCegarLoop]: Abstraction has has 23 places, 22 transitions, 92 flow [2021-06-11 18:55:02,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:55:02,833 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 18:55:02,833 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 18:55:02,833 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-11 18:55:02,834 INFO L428 AbstractCegarLoop]: === Iteration 2 === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process0Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-11 18:55:02,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 18:55:02,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1492004740, now seen corresponding path program 1 times [2021-06-11 18:55:02,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 18:55:02,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992845597] [2021-06-11 18:55:02,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 18:55:02,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 18:55:02,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:55:02,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 18:55:02,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:55:02,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 18:55:02,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:55:02,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 18:55:02,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:55:02,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 18:55:02,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 18:55:02,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992845597] [2021-06-11 18:55:02,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 18:55:02,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-11 18:55:02,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870758935] [2021-06-11 18:55:02,890 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-11 18:55:02,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 18:55:02,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-11 18:55:02,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-11 18:55:02,891 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 34 [2021-06-11 18:55:02,892 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 22 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:55:02,892 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 18:55:02,892 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 34 [2021-06-11 18:55:02,892 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 18:55:02,924 INFO L129 PetriNetUnfolder]: 26/72 cut-off events. [2021-06-11 18:55:02,925 INFO L130 PetriNetUnfolder]: For 19/24 co-relation queries the response was YES. [2021-06-11 18:55:02,925 INFO L84 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 72 events. 26/72 cut-off events. For 19/24 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 189 event pairs, 4 based on Foata normal form. 9/80 useless extension candidates. Maximal degree in co-relation 186. Up to 31 conditions per place. [2021-06-11 18:55:02,927 INFO L132 encePairwiseOnDemand]: 28/34 looper letters, 4 selfloop transitions, 9 changer transitions 0/26 dead transitions. [2021-06-11 18:55:02,927 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 26 transitions, 132 flow [2021-06-11 18:55:02,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-11 18:55:02,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-11 18:55:02,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2021-06-11 18:55:02,930 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6397058823529411 [2021-06-11 18:55:02,930 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 87 transitions. [2021-06-11 18:55:02,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 87 transitions. [2021-06-11 18:55:02,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 18:55:02,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 87 transitions. [2021-06-11 18:55:02,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:55:02,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:55:02,937 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:55:02,937 INFO L185 Difference]: Start difference. First operand has 23 places, 22 transitions, 92 flow. Second operand 4 states and 87 transitions. [2021-06-11 18:55:02,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 26 transitions, 132 flow [2021-06-11 18:55:02,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 26 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-11 18:55:02,943 INFO L241 Difference]: Finished difference. Result has 26 places, 25 transitions, 120 flow [2021-06-11 18:55:02,943 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=26, PETRI_TRANSITIONS=25} [2021-06-11 18:55:02,944 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 3 predicate places. [2021-06-11 18:55:02,944 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 18:55:02,944 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 26 places, 25 transitions, 120 flow [2021-06-11 18:55:02,944 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 26 places, 25 transitions, 120 flow [2021-06-11 18:55:02,945 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 26 places, 25 transitions, 120 flow [2021-06-11 18:55:02,956 INFO L129 PetriNetUnfolder]: 18/56 cut-off events. [2021-06-11 18:55:02,956 INFO L130 PetriNetUnfolder]: For 32/33 co-relation queries the response was YES. [2021-06-11 18:55:02,957 INFO L84 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 56 events. 18/56 cut-off events. For 32/33 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 139 event pairs, 1 based on Foata normal form. 1/55 useless extension candidates. Maximal degree in co-relation 137. Up to 26 conditions per place. [2021-06-11 18:55:02,958 INFO L151 LiptonReduction]: Number of co-enabled transitions 82 [2021-06-11 18:55:02,960 INFO L163 LiptonReduction]: Checked pairs total: 32 [2021-06-11 18:55:02,960 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 18:55:02,960 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 16 [2021-06-11 18:55:02,961 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 25 transitions, 120 flow [2021-06-11 18:55:02,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:55:02,962 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 18:55:02,962 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 18:55:02,962 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-11 18:55:02,962 INFO L428 AbstractCegarLoop]: === Iteration 3 === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process0Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-11 18:55:02,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 18:55:02,962 INFO L82 PathProgramCache]: Analyzing trace with hash 251250800, now seen corresponding path program 2 times [2021-06-11 18:55:02,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 18:55:02,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959678154] [2021-06-11 18:55:02,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 18:55:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 18:55:02,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:55:02,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 18:55:02,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:55:02,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 18:55:02,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:55:02,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 18:55:02,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:55:02,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 18:55:02,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 18:55:02,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959678154] [2021-06-11 18:55:02,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 18:55:02,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-11 18:55:02,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360963543] [2021-06-11 18:55:02,991 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-11 18:55:02,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 18:55:02,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-11 18:55:02,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-11 18:55:02,992 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 34 [2021-06-11 18:55:02,993 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:55:02,993 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 18:55:02,993 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 34 [2021-06-11 18:55:02,993 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 18:55:03,019 INFO L129 PetriNetUnfolder]: 24/72 cut-off events. [2021-06-11 18:55:03,020 INFO L130 PetriNetUnfolder]: For 83/86 co-relation queries the response was YES. [2021-06-11 18:55:03,020 INFO L84 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 72 events. 24/72 cut-off events. For 83/86 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 190 event pairs, 2 based on Foata normal form. 9/78 useless extension candidates. Maximal degree in co-relation 204. Up to 31 conditions per place. [2021-06-11 18:55:03,021 INFO L132 encePairwiseOnDemand]: 29/34 looper letters, 7 selfloop transitions, 7 changer transitions 0/30 dead transitions. [2021-06-11 18:55:03,021 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 169 flow [2021-06-11 18:55:03,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-11 18:55:03,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-11 18:55:03,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2021-06-11 18:55:03,022 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6470588235294118 [2021-06-11 18:55:03,023 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 88 transitions. [2021-06-11 18:55:03,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 88 transitions. [2021-06-11 18:55:03,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 18:55:03,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 88 transitions. [2021-06-11 18:55:03,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:55:03,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:55:03,024 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:55:03,024 INFO L185 Difference]: Start difference. First operand has 26 places, 25 transitions, 120 flow. Second operand 4 states and 88 transitions. [2021-06-11 18:55:03,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 169 flow [2021-06-11 18:55:03,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 30 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-11 18:55:03,027 INFO L241 Difference]: Finished difference. Result has 30 places, 28 transitions, 152 flow [2021-06-11 18:55:03,027 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=30, PETRI_TRANSITIONS=28} [2021-06-11 18:55:03,027 INFO L343 CegarLoopForPetriNet]: 23 programPoint places, 7 predicate places. [2021-06-11 18:55:03,027 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 18:55:03,027 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 28 transitions, 152 flow [2021-06-11 18:55:03,028 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 28 transitions, 152 flow [2021-06-11 18:55:03,028 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 30 places, 28 transitions, 152 flow [2021-06-11 18:55:03,034 INFO L129 PetriNetUnfolder]: 21/65 cut-off events. [2021-06-11 18:55:03,035 INFO L130 PetriNetUnfolder]: For 60/63 co-relation queries the response was YES. [2021-06-11 18:55:03,035 INFO L84 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 65 events. 21/65 cut-off events. For 60/63 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 177 event pairs, 1 based on Foata normal form. 3/65 useless extension candidates. Maximal degree in co-relation 184. Up to 29 conditions per place. [2021-06-11 18:55:03,036 INFO L151 LiptonReduction]: Number of co-enabled transitions 84 [2021-06-11 18:55:03,038 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 18:55:03,038 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 18:55:03,038 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11 [2021-06-11 18:55:03,039 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 28 transitions, 152 flow [2021-06-11 18:55:03,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 18:55:03,040 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 18:55:03,040 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 18:55:03,040 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-11 18:55:03,040 INFO L428 AbstractCegarLoop]: === Iteration 4 === [Process0Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, Process1Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1INUSE_VIOLATION, Process0Err0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-11 18:55:03,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 18:55:03,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1279332340, now seen corresponding path program 3 times [2021-06-11 18:55:03,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 18:55:03,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375656444] [2021-06-11 18:55:03,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 18:55:03,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 18:55:03,046 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 18:55:03,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 18:55:03,050 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 18:55:03,061 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 18:55:03,061 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 18:55:03,062 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-11 18:55:03,080 INFO L202 PluginConnector]: Adding new model PetersonWithBug.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.06 06:55:03 BasicIcfg [2021-06-11 18:55:03,080 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-11 18:55:03,081 INFO L168 Benchmark]: Toolchain (without parser) took 1448.44 ms. Allocated memory is still 362.8 MB. Free memory was 342.4 MB in the beginning and 346.4 MB in the end (delta: -4.0 MB). Peak memory consumption was 95.6 MB. Max. memory is 16.0 GB. [2021-06-11 18:55:03,081 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.17 ms. Allocated memory is still 362.8 MB. Free memory is still 343.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-11 18:55:03,081 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.00 ms. Allocated memory is still 362.8 MB. Free memory was 342.4 MB in the beginning and 340.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-11 18:55:03,082 INFO L168 Benchmark]: Boogie Preprocessor took 16.73 ms. Allocated memory is still 362.8 MB. Free memory was 340.8 MB in the beginning and 339.8 MB in the end (delta: 974.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-11 18:55:03,082 INFO L168 Benchmark]: RCFGBuilder took 188.53 ms. Allocated memory is still 362.8 MB. Free memory was 339.8 MB in the beginning and 330.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.0 GB. [2021-06-11 18:55:03,082 INFO L168 Benchmark]: TraceAbstraction took 1209.62 ms. Allocated memory is still 362.8 MB. Free memory was 329.8 MB in the beginning and 346.4 MB in the end (delta: -16.6 MB). Peak memory consumption was 85.1 MB. Max. memory is 16.0 GB. [2021-06-11 18:55:03,084 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 0.17 ms. Allocated memory is still 362.8 MB. Free memory is still 343.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 28.00 ms. Allocated memory is still 362.8 MB. Free memory was 342.4 MB in the beginning and 340.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 16.73 ms. Allocated memory is still 362.8 MB. Free memory was 340.8 MB in the beginning and 339.8 MB in the end (delta: 974.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 188.53 ms. Allocated memory is still 362.8 MB. Free memory was 339.8 MB in the beginning and 330.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1209.62 ms. Allocated memory is still 362.8 MB. Free memory was 329.8 MB in the beginning and 346.4 MB in the end (delta: -16.6 MB). Peak memory consumption was 85.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 537.6ms, 29 PlacesBefore, 23 PlacesAfterwards, 24 TransitionsBefore, 18 TransitionsAfterwards, 260 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 8 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 8 TotalNumberOfCompositions, 578 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 278, positive: 226, positive conditional: 226, positive unconditional: 0, negative: 52, negative conditional: 52, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 278, positive: 226, positive conditional: 0, positive unconditional: 226, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 278, positive: 226, positive conditional: 0, positive unconditional: 226, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 169, positive: 143, positive conditional: 0, positive unconditional: 143, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 169, positive: 121, positive conditional: 0, positive unconditional: 121, negative: 48, negative conditional: 0, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 48, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 235, positive: 118, positive conditional: 0, positive unconditional: 118, negative: 118, negative conditional: 0, negative unconditional: 118, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 278, positive: 83, positive conditional: 0, positive unconditional: 83, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 169, unknown conditional: 0, unknown unconditional: 169] , Statistics on independence cache: Total cache size (in pairs): 169, Positive cache size: 143, Positive conditional cache size: 0, Positive unconditional cache size: 143, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 31.5ms, 23 PlacesBefore, 23 PlacesAfterwards, 22 TransitionsBefore, 22 TransitionsAfterwards, 86 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 75 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 47, positive: 37, positive conditional: 37, positive unconditional: 0, negative: 10, negative conditional: 10, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 47, positive: 37, positive conditional: 0, positive unconditional: 37, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 47, positive: 37, positive conditional: 0, positive unconditional: 37, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 5, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 47, positive: 36, positive conditional: 0, positive unconditional: 36, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 170, Positive cache size: 144, Positive conditional cache size: 0, Positive unconditional cache size: 144, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Eliminated conditions: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 15.7ms, 26 PlacesBefore, 26 PlacesAfterwards, 25 TransitionsBefore, 25 TransitionsAfterwards, 82 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 32 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 20, positive: 16, positive conditional: 16, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 20, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 20, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 20, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 170, Positive cache size: 144, Positive conditional cache size: 0, Positive unconditional cache size: 144, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.6ms, 30 PlacesBefore, 30 PlacesAfterwards, 28 TransitionsBefore, 28 TransitionsAfterwards, 84 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 170, Positive cache size: 144, Positive conditional cache size: 0, Positive unconditional cache size: 144, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Eliminated conditions: 0 - CounterExampleResult [Line: 59]: assertion can be violated assertion can be violated We found a FailurePath: [L25] 0 critical := 0; VAL [critical=0] [L26] FORK 0 fork 0 Process0(); VAL [critical=0] [L37] 1 turn := 1; VAL [critical=0, turn=1] [L27] FORK 0 fork 1 Process1(); VAL [critical=0, turn=1] [L56] 2 flag1 := 1; [L57] 2 turn := 0; VAL [critical=0, flag1=1, turn=0] [L58] 2 assume flag0 == 0 || turn == 1; VAL [critical=0, flag0=0, flag1=1, turn=0] [L38] 1 flag0 := 1; [L39] 1 assume flag1 == 0 || turn == 0; [L40] 1 assert critical == 0; VAL [critical=0, flag0=1, flag1=1, turn=0] [L41] 1 critical := 1; VAL [critical=1, flag0=1, flag1=1, turn=0] [L59] 2 assert critical == 0; VAL [critical=1, flag0=1, flag1=1, turn=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 25 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 1121.1ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 178.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 633.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 26 SDtfs, 7 SDslu, 3 SDs, 0 SdLazy, 24 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 31.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=152occurred in iteration=3, InterpolantAutomatonStates: 11, 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: 5.0ms SsaConstructionTime, 18.3ms SatisfiabilityAnalysisTime, 91.1ms InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 51 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...