/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/concurrent/bpl/VMCAI2021/generated/example2_N=16.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b665a9c [2020-09-29 10:29:59,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-29 10:29:59,419 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-29 10:29:59,467 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-29 10:29:59,467 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-29 10:29:59,479 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-29 10:29:59,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-29 10:29:59,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-29 10:29:59,489 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-29 10:29:59,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-29 10:29:59,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-29 10:29:59,497 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-29 10:29:59,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-29 10:29:59,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-29 10:29:59,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-29 10:29:59,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-29 10:29:59,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-29 10:29:59,509 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-29 10:29:59,511 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-29 10:29:59,521 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-29 10:29:59,522 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-29 10:29:59,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-29 10:29:59,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-29 10:29:59,526 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-29 10:29:59,530 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-29 10:29:59,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-29 10:29:59,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-29 10:29:59,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-29 10:29:59,545 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-29 10:29:59,597 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-29 10:29:59,597 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-29 10:29:59,599 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-29 10:29:59,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-29 10:29:59,600 INFO L138 SettingsManager]: * Use SBE=true [2020-09-29 10:29:59,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-29 10:29:59,600 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-29 10:29:59,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-29 10:29:59,601 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-29 10:29:59,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-29 10:29:59,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-29 10:29:59,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-29 10:29:59,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-29 10:29:59,603 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-29 10:29:59,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-29 10:29:59,603 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-29 10:29:59,604 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-29 10:29:59,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-29 10:29:59,604 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-29 10:29:59,604 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-29 10:29:59,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-29 10:29:59,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-29 10:29:59,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-29 10:29:59,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-29 10:29:59,605 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-29 10:29:59,605 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-29 10:29:59,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-29 10:29:59,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-29 10:29:59,606 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-29 10:29:59,606 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-29 10:30:00,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-29 10:30:00,117 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-29 10:30:00,123 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-29 10:30:00,125 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-09-29 10:30:00,126 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-09-29 10:30:00,127 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/VMCAI2021/generated/example2_N=16.bpl [2020-09-29 10:30:00,128 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/VMCAI2021/generated/example2_N=16.bpl' [2020-09-29 10:30:00,205 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-29 10:30:00,212 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-29 10:30:00,213 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-29 10:30:00,213 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-29 10:30:00,213 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-29 10:30:00,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example2_N=16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:30:00" (1/1) ... [2020-09-29 10:30:00,255 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example2_N=16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:30:00" (1/1) ... [2020-09-29 10:30:00,268 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-29 10:30:00,269 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-29 10:30:00,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-29 10:30:00,269 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-29 10:30:00,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example2_N=16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:30:00" (1/1) ... [2020-09-29 10:30:00,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example2_N=16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:30:00" (1/1) ... [2020-09-29 10:30:00,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example2_N=16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:30:00" (1/1) ... [2020-09-29 10:30:00,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example2_N=16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:30:00" (1/1) ... [2020-09-29 10:30:00,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example2_N=16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:30:00" (1/1) ... [2020-09-29 10:30:00,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example2_N=16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:30:00" (1/1) ... [2020-09-29 10:30:00,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example2_N=16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:30:00" (1/1) ... [2020-09-29 10:30:00,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-29 10:30:00,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-29 10:30:00,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-29 10:30:00,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-29 10:30:00,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example2_N=16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:30:00" (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 [2020-09-29 10:30:00,427 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2020-09-29 10:30:00,427 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-09-29 10:30:00,429 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-09-29 10:30:00,429 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2020-09-29 10:30:00,429 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2020-09-29 10:30:00,430 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2020-09-29 10:30:00,430 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2020-09-29 10:30:00,430 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2020-09-29 10:30:00,430 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2020-09-29 10:30:00,430 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2020-09-29 10:30:00,431 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2020-09-29 10:30:00,431 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2020-09-29 10:30:00,431 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2020-09-29 10:30:00,431 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2020-09-29 10:30:00,431 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2020-09-29 10:30:00,432 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2020-09-29 10:30:00,432 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2020-09-29 10:30:00,432 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2020-09-29 10:30:00,433 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread7 given in one single declaration [2020-09-29 10:30:00,433 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2020-09-29 10:30:00,433 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2020-09-29 10:30:00,433 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread8 given in one single declaration [2020-09-29 10:30:00,434 INFO L130 BoogieDeclarations]: Found specification of procedure thread8 [2020-09-29 10:30:00,434 INFO L138 BoogieDeclarations]: Found implementation of procedure thread8 [2020-09-29 10:30:00,440 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread9 given in one single declaration [2020-09-29 10:30:00,441 INFO L130 BoogieDeclarations]: Found specification of procedure thread9 [2020-09-29 10:30:00,442 INFO L138 BoogieDeclarations]: Found implementation of procedure thread9 [2020-09-29 10:30:00,443 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread14 given in one single declaration [2020-09-29 10:30:00,443 INFO L130 BoogieDeclarations]: Found specification of procedure thread14 [2020-09-29 10:30:00,443 INFO L138 BoogieDeclarations]: Found implementation of procedure thread14 [2020-09-29 10:30:00,443 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread13 given in one single declaration [2020-09-29 10:30:00,443 INFO L130 BoogieDeclarations]: Found specification of procedure thread13 [2020-09-29 10:30:00,443 INFO L138 BoogieDeclarations]: Found implementation of procedure thread13 [2020-09-29 10:30:00,444 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-09-29 10:30:00,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-29 10:30:00,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-29 10:30:00,445 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread16 given in one single declaration [2020-09-29 10:30:00,445 INFO L130 BoogieDeclarations]: Found specification of procedure thread16 [2020-09-29 10:30:00,445 INFO L138 BoogieDeclarations]: Found implementation of procedure thread16 [2020-09-29 10:30:00,446 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread15 given in one single declaration [2020-09-29 10:30:00,446 INFO L130 BoogieDeclarations]: Found specification of procedure thread15 [2020-09-29 10:30:00,446 INFO L138 BoogieDeclarations]: Found implementation of procedure thread15 [2020-09-29 10:30:00,446 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread10 given in one single declaration [2020-09-29 10:30:00,447 INFO L130 BoogieDeclarations]: Found specification of procedure thread10 [2020-09-29 10:30:00,447 INFO L138 BoogieDeclarations]: Found implementation of procedure thread10 [2020-09-29 10:30:00,447 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread12 given in one single declaration [2020-09-29 10:30:00,447 INFO L130 BoogieDeclarations]: Found specification of procedure thread12 [2020-09-29 10:30:00,447 INFO L138 BoogieDeclarations]: Found implementation of procedure thread12 [2020-09-29 10:30:00,448 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread11 given in one single declaration [2020-09-29 10:30:00,448 INFO L130 BoogieDeclarations]: Found specification of procedure thread11 [2020-09-29 10:30:00,448 INFO L138 BoogieDeclarations]: Found implementation of procedure thread11 [2020-09-29 10:30:00,450 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-29 10:30:00,752 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-29 10:30:00,752 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-09-29 10:30:00,759 INFO L202 PluginConnector]: Adding new model example2_N=16.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.09 10:30:00 BoogieIcfgContainer [2020-09-29 10:30:00,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-29 10:30:00,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-29 10:30:00,775 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-29 10:30:00,782 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-29 10:30:00,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example2_N=16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:30:00" (1/2) ... [2020-09-29 10:30:00,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@638cb725 and model type example2_N=16.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.09 10:30:00, skipping insertion in model container [2020-09-29 10:30:00,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example2_N=16.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.09 10:30:00" (2/2) ... [2020-09-29 10:30:00,792 INFO L109 eAbstractionObserver]: Analyzing ICFG example2_N=16.bpl [2020-09-29 10:30:00,802 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-29 10:30:00,803 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-29 10:30:00,812 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-29 10:30:00,813 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-29 10:30:01,100 INFO L251 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2020-09-29 10:30:01,130 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-29 10:30:01,130 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-29 10:30:01,130 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-29 10:30:01,131 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-29 10:30:01,131 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-29 10:30:01,131 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-29 10:30:01,131 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-29 10:30:01,131 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-29 10:30:01,154 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 84 transitions, 296 flow [2020-09-29 10:30:01,157 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 117 places, 84 transitions, 296 flow [2020-09-29 10:30:01,249 INFO L129 PetriNetUnfolder]: 16/68 cut-off events. [2020-09-29 10:30:01,249 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-09-29 10:30:01,264 INFO L80 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 68 events. 16/68 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 77. Up to 2 conditions per place. [2020-09-29 10:30:01,271 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 117 places, 84 transitions, 296 flow [2020-09-29 10:30:01,329 INFO L129 PetriNetUnfolder]: 16/68 cut-off events. [2020-09-29 10:30:01,329 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-09-29 10:30:01,333 INFO L80 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 68 events. 16/68 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 77. Up to 2 conditions per place. [2020-09-29 10:30:01,338 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1920 [2020-09-29 10:30:01,339 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-29 10:30:01,442 INFO L206 etLargeBlockEncoding]: Checked pairs total: 0 [2020-09-29 10:30:01,442 INFO L214 etLargeBlockEncoding]: Total number of compositions: 1 [2020-09-29 10:30:01,448 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 116 places, 83 transitions, 294 flow [2020-09-29 10:32:05,656 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 196609 states. [2020-09-29 10:32:05,659 INFO L276 IsEmpty]: Start isEmpty. Operand 196609 states. [2020-09-29 10:32:06,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-29 10:32:06,829 INFO L414 BasicCegarLoop]: Found error trace [2020-09-29 10:32:06,830 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-29 10:32:06,830 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr15INUSE_VIOLATION, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2020-09-29 10:32:06,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-29 10:32:06,838 INFO L82 PathProgramCache]: Analyzing trace with hash -2096486815, now seen corresponding path program 1 times [2020-09-29 10:32:06,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-29 10:32:06,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976120800] [2020-09-29 10:32:06,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-29 10:32:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-29 10:32:07,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-29 10:32:07,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976120800] [2020-09-29 10:32:07,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-29 10:32:07,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-29 10:32:07,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582064654] [2020-09-29 10:32:07,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-29 10:32:07,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-29 10:32:07,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-29 10:32:07,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-29 10:32:07,227 INFO L87 Difference]: Start difference. First operand 196609 states. Second operand 3 states. [2020-09-29 10:32:23,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-29 10:32:23,266 INFO L93 Difference]: Finished difference Result 196608 states and 3014660 transitions. [2020-09-29 10:32:23,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-29 10:32:23,268 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2020-09-29 10:32:23,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-29 10:32:23,277 INFO L225 Difference]: With dead ends: 196608 [2020-09-29 10:32:23,277 INFO L226 Difference]: Without dead ends: 0 [2020-09-29 10:32:23,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-29 10:32:23,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-29 10:32:23,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-29 10:32:23,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-29 10:32:23,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-29 10:32:23,306 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50 [2020-09-29 10:32:23,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-29 10:32:23,307 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-29 10:32:23,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-29 10:32:23,307 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-29 10:32:23,308 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-29 10:32:23,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-29 10:32:23,313 INFO L202 PluginConnector]: Adding new model example2_N=16.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.09 10:32:23 BasicIcfg [2020-09-29 10:32:23,313 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-29 10:32:23,317 INFO L168 Benchmark]: Toolchain (without parser) took 143108.84 ms. Allocated memory was 148.4 MB in the beginning and 3.7 GB in the end (delta: 3.5 GB). Free memory was 120.2 MB in the beginning and 735.3 MB in the end (delta: -615.1 MB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2020-09-29 10:32:23,320 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.54 ms. Allocated memory is still 148.4 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-29 10:32:23,321 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.35 ms. Allocated memory is still 148.4 MB. Free memory was 119.7 MB in the beginning and 117.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2020-09-29 10:32:23,322 INFO L168 Benchmark]: Boogie Preprocessor took 59.52 ms. Allocated memory is still 148.4 MB. Free memory was 117.9 MB in the beginning and 116.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-29 10:32:23,325 INFO L168 Benchmark]: RCFGBuilder took 430.25 ms. Allocated memory is still 148.4 MB. Free memory was 116.6 MB in the beginning and 98.7 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. [2020-09-29 10:32:23,328 INFO L168 Benchmark]: TraceAbstraction took 142538.70 ms. Allocated memory was 148.4 MB in the beginning and 3.7 GB in the end (delta: 3.5 GB). Free memory was 98.3 MB in the beginning and 735.3 MB in the end (delta: -637.0 MB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2020-09-29 10:32:23,334 INFO L336 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 0.54 ms. Allocated memory is still 148.4 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 55.35 ms. Allocated memory is still 148.4 MB. Free memory was 119.7 MB in the beginning and 117.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 59.52 ms. Allocated memory is still 148.4 MB. Free memory was 117.9 MB in the beginning and 116.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 430.25 ms. Allocated memory is still 148.4 MB. Free memory was 116.6 MB in the beginning and 98.7 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 142538.70 ms. Allocated memory was 148.4 MB in the beginning and 3.7 GB in the end (delta: 3.5 GB). Free memory was 98.3 MB in the beginning and 735.3 MB in the end (delta: -637.0 MB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.2s, 117 ProgramPointsBefore, 116 ProgramPointsAfterwards, 84 TransitionsBefore, 83 TransitionsAfterwards, 1920 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 0 CheckedPairsTotal, 1 TotalNumberOfCompositions - PositiveResult [Line: 42]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 17 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 142.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 16.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 124.5s, HoareTripleCheckerStatistics: 49 SDtfs, 1 SDslu, 0 SDs, 0 SdLazy, 17 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=196609occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 7203 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 correct! Received shutdown request...