/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=17.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b665a9c [2020-09-29 10:29:59,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-29 10:29:59,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-29 10:29:59,578 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-29 10:29:59,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-29 10:29:59,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-29 10:29:59,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-29 10:29:59,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-29 10:29:59,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-29 10:29:59,603 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-29 10:29:59,604 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-29 10:29:59,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-29 10:29:59,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-29 10:29:59,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-29 10:29:59,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-29 10:29:59,615 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-29 10:29:59,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-29 10:29:59,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-29 10:29:59,620 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-29 10:29:59,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-29 10:29:59,633 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-29 10:29:59,634 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-29 10:29:59,635 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-29 10:29:59,636 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-29 10:29:59,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-29 10:29:59,651 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-29 10:29:59,652 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-29 10:29:59,654 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-29 10:29:59,654 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 10:29:59,705 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-29 10:29:59,705 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-29 10:29:59,707 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-29 10:29:59,707 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-29 10:29:59,708 INFO L138 SettingsManager]: * Use SBE=true [2020-09-29 10:29:59,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-29 10:29:59,708 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-29 10:29:59,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-29 10:29:59,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-29 10:29:59,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-29 10:29:59,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-29 10:29:59,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-29 10:29:59,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-29 10:29:59,711 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-29 10:29:59,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-29 10:29:59,711 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-29 10:29:59,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-29 10:29:59,712 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-29 10:29:59,712 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-29 10:29:59,712 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-29 10:29:59,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-29 10:29:59,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-29 10:29:59,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-29 10:29:59,713 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-29 10:29:59,713 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-29 10:29:59,713 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-29 10:29:59,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-29 10:29:59,714 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-29 10:29:59,714 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-29 10:29:59,714 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-29 10:30:00,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-29 10:30:00,233 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-29 10:30:00,238 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-29 10:30:00,239 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-09-29 10:30:00,240 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-09-29 10:30:00,242 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/VMCAI2021/generated/example2_N=17.bpl [2020-09-29 10:30:00,242 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/VMCAI2021/generated/example2_N=17.bpl' [2020-09-29 10:30:00,297 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-29 10:30:00,304 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-29 10:30:00,304 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-29 10:30:00,305 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-29 10:30:00,305 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-29 10:30:00,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example2_N=17.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:30:00" (1/1) ... [2020-09-29 10:30:00,337 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example2_N=17.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:30:00" (1/1) ... [2020-09-29 10:30:00,351 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-29 10:30:00,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-29 10:30:00,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-29 10:30:00,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-29 10:30:00,366 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example2_N=17.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:30:00" (1/1) ... [2020-09-29 10:30:00,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example2_N=17.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:30:00" (1/1) ... [2020-09-29 10:30:00,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example2_N=17.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:30:00" (1/1) ... [2020-09-29 10:30:00,368 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example2_N=17.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:30:00" (1/1) ... [2020-09-29 10:30:00,374 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example2_N=17.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:30:00" (1/1) ... [2020-09-29 10:30:00,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example2_N=17.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:30:00" (1/1) ... [2020-09-29 10:30:00,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example2_N=17.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:30:00" (1/1) ... [2020-09-29 10:30:00,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-29 10:30:00,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-29 10:30:00,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-29 10:30:00,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-29 10:30:00,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example2_N=17.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 10:30:00,495 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread17 given in one single declaration [2020-09-29 10:30:00,496 INFO L130 BoogieDeclarations]: Found specification of procedure thread17 [2020-09-29 10:30:00,498 INFO L138 BoogieDeclarations]: Found implementation of procedure thread17 [2020-09-29 10:30:00,498 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2020-09-29 10:30:00,498 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-09-29 10:30:00,499 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-09-29 10:30:00,499 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2020-09-29 10:30:00,499 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2020-09-29 10:30:00,499 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2020-09-29 10:30:00,500 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2020-09-29 10:30:00,500 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2020-09-29 10:30:00,500 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2020-09-29 10:30:00,500 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2020-09-29 10:30:00,501 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2020-09-29 10:30:00,501 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2020-09-29 10:30:00,501 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2020-09-29 10:30:00,501 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2020-09-29 10:30:00,501 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2020-09-29 10:30:00,502 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2020-09-29 10:30:00,502 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2020-09-29 10:30:00,503 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2020-09-29 10:30:00,503 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread7 given in one single declaration [2020-09-29 10:30:00,503 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2020-09-29 10:30:00,504 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2020-09-29 10:30:00,504 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread8 given in one single declaration [2020-09-29 10:30:00,505 INFO L130 BoogieDeclarations]: Found specification of procedure thread8 [2020-09-29 10:30:00,505 INFO L138 BoogieDeclarations]: Found implementation of procedure thread8 [2020-09-29 10:30:00,506 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread9 given in one single declaration [2020-09-29 10:30:00,506 INFO L130 BoogieDeclarations]: Found specification of procedure thread9 [2020-09-29 10:30:00,506 INFO L138 BoogieDeclarations]: Found implementation of procedure thread9 [2020-09-29 10:30:00,507 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread14 given in one single declaration [2020-09-29 10:30:00,507 INFO L130 BoogieDeclarations]: Found specification of procedure thread14 [2020-09-29 10:30:00,507 INFO L138 BoogieDeclarations]: Found implementation of procedure thread14 [2020-09-29 10:30:00,507 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread13 given in one single declaration [2020-09-29 10:30:00,508 INFO L130 BoogieDeclarations]: Found specification of procedure thread13 [2020-09-29 10:30:00,508 INFO L138 BoogieDeclarations]: Found implementation of procedure thread13 [2020-09-29 10:30:00,509 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-09-29 10:30:00,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-29 10:30:00,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-29 10:30:00,509 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread16 given in one single declaration [2020-09-29 10:30:00,509 INFO L130 BoogieDeclarations]: Found specification of procedure thread16 [2020-09-29 10:30:00,510 INFO L138 BoogieDeclarations]: Found implementation of procedure thread16 [2020-09-29 10:30:00,510 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread15 given in one single declaration [2020-09-29 10:30:00,510 INFO L130 BoogieDeclarations]: Found specification of procedure thread15 [2020-09-29 10:30:00,511 INFO L138 BoogieDeclarations]: Found implementation of procedure thread15 [2020-09-29 10:30:00,511 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread10 given in one single declaration [2020-09-29 10:30:00,511 INFO L130 BoogieDeclarations]: Found specification of procedure thread10 [2020-09-29 10:30:00,511 INFO L138 BoogieDeclarations]: Found implementation of procedure thread10 [2020-09-29 10:30:00,511 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread12 given in one single declaration [2020-09-29 10:30:00,512 INFO L130 BoogieDeclarations]: Found specification of procedure thread12 [2020-09-29 10:30:00,512 INFO L138 BoogieDeclarations]: Found implementation of procedure thread12 [2020-09-29 10:30:00,512 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread11 given in one single declaration [2020-09-29 10:30:00,512 INFO L130 BoogieDeclarations]: Found specification of procedure thread11 [2020-09-29 10:30:00,513 INFO L138 BoogieDeclarations]: Found implementation of procedure thread11 [2020-09-29 10:30:00,514 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 10:30:00,790 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-29 10:30:00,790 INFO L298 CfgBuilder]: Removed 17 assume(true) statements. [2020-09-29 10:30:00,797 INFO L202 PluginConnector]: Adding new model example2_N=17.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.09 10:30:00 BoogieIcfgContainer [2020-09-29 10:30:00,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-29 10:30:00,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-29 10:30:00,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-29 10:30:00,805 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-29 10:30:00,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example2_N=17.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 10:30:00" (1/2) ... [2020-09-29 10:30:00,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9777a7c and model type example2_N=17.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.09 10:30:00, skipping insertion in model container [2020-09-29 10:30:00,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example2_N=17.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.09 10:30:00" (2/2) ... [2020-09-29 10:30:00,811 INFO L109 eAbstractionObserver]: Analyzing ICFG example2_N=17.bpl [2020-09-29 10:30:00,828 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-29 10:30:00,829 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-29 10:30:00,839 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-29 10:30:00,841 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-29 10:30:01,184 INFO L251 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2020-09-29 10:30:01,214 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-29 10:30:01,215 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-29 10:30:01,215 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-29 10:30:01,215 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-29 10:30:01,215 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-29 10:30:01,216 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-29 10:30:01,216 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-29 10:30:01,216 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-29 10:30:01,241 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 124 places, 89 transitions, 314 flow [2020-09-29 10:30:01,244 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 124 places, 89 transitions, 314 flow [2020-09-29 10:30:01,347 INFO L129 PetriNetUnfolder]: 17/72 cut-off events. [2020-09-29 10:30:01,347 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2020-09-29 10:30:01,359 INFO L80 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 72 events. 17/72 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 82. Up to 2 conditions per place. [2020-09-29 10:30:01,364 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 124 places, 89 transitions, 314 flow [2020-09-29 10:30:01,413 INFO L129 PetriNetUnfolder]: 17/72 cut-off events. [2020-09-29 10:30:01,413 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2020-09-29 10:30:01,416 INFO L80 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 72 events. 17/72 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 82. Up to 2 conditions per place. [2020-09-29 10:30:01,422 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 2176 [2020-09-29 10:30:01,424 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-29 10:30:01,526 INFO L206 etLargeBlockEncoding]: Checked pairs total: 0 [2020-09-29 10:30:01,526 INFO L214 etLargeBlockEncoding]: Total number of compositions: 1 [2020-09-29 10:30:01,532 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 123 places, 88 transitions, 312 flow [2020-09-29 10:38:33,623 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 393217 states. [2020-09-29 10:38:33,625 INFO L276 IsEmpty]: Start isEmpty. Operand 393217 states. [2020-09-29 10:38:46,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-29 10:38:46,995 INFO L414 BasicCegarLoop]: Found error trace [2020-09-29 10:38:46,996 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, 1, 1, 1] [2020-09-29 10:38:46,997 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr14INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr16INUSE_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 10:38:47,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-29 10:38:47,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1358220455, now seen corresponding path program 1 times [2020-09-29 10:38:47,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-29 10:38:47,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574909540] [2020-09-29 10:38:47,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-29 10:38:47,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-29 10:38:47,396 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 10:38:47,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574909540] [2020-09-29 10:38:47,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-29 10:38:47,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-29 10:38:47,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582011005] [2020-09-29 10:38:47,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-29 10:38:47,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-29 10:38:47,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-29 10:38:47,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-29 10:38:47,432 INFO L87 Difference]: Start difference. First operand 393217 states. Second operand 3 states.