/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/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -i ../../../trunk/examples/concurrent/bpl/mcr/example_8.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d9e330d [2020-02-10 23:28:44,735 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-02-10 23:28:44,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-02-10 23:28:44,750 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-02-10 23:28:44,750 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-02-10 23:28:44,751 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-02-10 23:28:44,752 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-02-10 23:28:44,754 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-02-10 23:28:44,756 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-02-10 23:28:44,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-02-10 23:28:44,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-02-10 23:28:44,759 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-02-10 23:28:44,759 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-02-10 23:28:44,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-02-10 23:28:44,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-02-10 23:28:44,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-02-10 23:28:44,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-02-10 23:28:44,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-02-10 23:28:44,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-02-10 23:28:44,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-02-10 23:28:44,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-02-10 23:28:44,769 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-02-10 23:28:44,770 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-02-10 23:28:44,771 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-02-10 23:28:44,773 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-02-10 23:28:44,776 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-02-10 23:28:44,777 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-02-10 23:28:44,777 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-02-10 23:28:44,778 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-02-10 23:28:44,779 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-02-10 23:28:44,779 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-02-10 23:28:44,781 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-02-10 23:28:44,781 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-02-10 23:28:44,781 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-02-10 23:28:44,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-02-10 23:28:44,785 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-02-10 23:28:44,786 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2020-02-10 23:28:44,808 INFO L113 SettingsManager]: Loading preferences was successful [2020-02-10 23:28:44,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-02-10 23:28:44,811 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-02-10 23:28:44,811 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-02-10 23:28:44,812 INFO L138 SettingsManager]: * Use SBE=true [2020-02-10 23:28:44,812 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-02-10 23:28:44,812 INFO L138 SettingsManager]: * sizeof long=4 [2020-02-10 23:28:44,812 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-02-10 23:28:44,812 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-02-10 23:28:44,813 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-02-10 23:28:44,814 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-02-10 23:28:44,814 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-02-10 23:28:44,814 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-02-10 23:28:44,815 INFO L138 SettingsManager]: * sizeof long double=12 [2020-02-10 23:28:44,815 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-02-10 23:28:44,815 INFO L138 SettingsManager]: * Use constant arrays=true [2020-02-10 23:28:44,815 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-02-10 23:28:44,815 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-02-10 23:28:44,815 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-02-10 23:28:44,816 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-02-10 23:28:44,816 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-02-10 23:28:44,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-02-10 23:28:44,817 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-02-10 23:28:44,817 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-02-10 23:28:44,817 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-02-10 23:28:44,818 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-02-10 23:28:44,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-02-10 23:28:44,818 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-02-10 23:28:44,818 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-02-10 23:28:44,818 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-02-10 23:28:45,140 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-02-10 23:28:45,161 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-02-10 23:28:45,167 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-02-10 23:28:45,168 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-02-10 23:28:45,169 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-02-10 23:28:45,170 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_8.bpl [2020-02-10 23:28:45,170 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_8.bpl' [2020-02-10 23:28:45,204 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-02-10 23:28:45,207 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-02-10 23:28:45,208 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-02-10 23:28:45,208 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-02-10 23:28:45,208 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-02-10 23:28:45,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:45" (1/1) ... [2020-02-10 23:28:45,234 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:45" (1/1) ... [2020-02-10 23:28:45,243 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-02-10 23:28:45,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-02-10 23:28:45,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-02-10 23:28:45,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-02-10 23:28:45,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:45" (1/1) ... [2020-02-10 23:28:45,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:45" (1/1) ... [2020-02-10 23:28:45,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:45" (1/1) ... [2020-02-10 23:28:45,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:45" (1/1) ... [2020-02-10 23:28:45,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:45" (1/1) ... [2020-02-10 23:28:45,261 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:45" (1/1) ... [2020-02-10 23:28:45,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:45" (1/1) ... [2020-02-10 23:28:45,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-02-10 23:28:45,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-02-10 23:28:45,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-02-10 23:28:45,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-02-10 23:28:45,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:45" (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 [2020-02-10 23:28:45,337 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-02-10 23:28:45,337 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-02-10 23:28:45,338 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-02-10 23:28:45,339 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-02-10 23:28:45,339 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-02-10 23:28:45,339 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-02-10 23:28:45,340 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2020-02-10 23:28:45,340 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2020-02-10 23:28:45,340 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2020-02-10 23:28:45,340 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2020-02-10 23:28:45,340 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2020-02-10 23:28:45,341 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2020-02-10 23:28:45,341 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-02-10 23:28:45,341 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-02-10 23:28:45,341 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-02-10 23:28:45,341 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-02-10 23:28:45,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-02-10 23:28:45,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-02-10 23:28:45,342 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2020-02-10 23:28:45,342 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2020-02-10 23:28:45,342 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2020-02-10 23:28:45,342 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2020-02-10 23:28:45,343 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2020-02-10 23:28:45,343 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2020-02-10 23:28:45,344 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2020-02-10 23:28:45,351 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2020-02-10 23:28:45,352 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2020-02-10 23:28:45,354 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-02-10 23:28:45,648 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-02-10 23:28:45,648 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-02-10 23:28:45,652 INFO L202 PluginConnector]: Adding new model example_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:28:45 BoogieIcfgContainer [2020-02-10 23:28:45,652 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-02-10 23:28:45,653 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-02-10 23:28:45,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-02-10 23:28:45,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-02-10 23:28:45,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_8.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:28:45" (1/2) ... [2020-02-10 23:28:45,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e072328 and model type example_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 11:28:45, skipping insertion in model container [2020-02-10 23:28:45,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:28:45" (2/2) ... [2020-02-10 23:28:45,660 INFO L109 eAbstractionObserver]: Analyzing ICFG example_8.bpl [2020-02-10 23:28:45,671 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-02-10 23:28:45,678 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-02-10 23:28:45,679 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-02-10 23:28:45,866 INFO L251 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-02-10 23:28:45,885 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-02-10 23:28:45,886 INFO L376 AbstractCegarLoop]: Hoare is false [2020-02-10 23:28:45,886 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-02-10 23:28:45,886 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-02-10 23:28:45,886 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-02-10 23:28:45,887 INFO L380 AbstractCegarLoop]: Difference is false [2020-02-10 23:28:45,887 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-02-10 23:28:45,887 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-02-10 23:28:45,903 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 68 places, 99 transitions [2020-02-10 23:28:46,303 INFO L129 PetriNetUnfolder]: 769/1051 cut-off events. [2020-02-10 23:28:46,303 INFO L130 PetriNetUnfolder]: For 1024/1024 co-relation queries the response was YES. [2020-02-10 23:28:46,324 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2100 conditions, 1051 events. 769/1051 cut-off events. For 1024/1024 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3864 event pairs. 0/1050 useless extension candidates. Maximal degree in co-relation 933. Up to 280 conditions per place. [2020-02-10 23:28:46,324 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 99 transitions [2020-02-10 23:28:46,363 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 89 transitions [2020-02-10 23:28:46,367 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 89 transitions [2020-02-10 23:28:46,368 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 58 places, 89 transitions [2020-02-10 23:28:46,586 INFO L129 PetriNetUnfolder]: 769/1049 cut-off events. [2020-02-10 23:28:46,586 INFO L130 PetriNetUnfolder]: For 1024/1024 co-relation queries the response was YES. [2020-02-10 23:28:46,595 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2098 conditions, 1049 events. 769/1049 cut-off events. For 1024/1024 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3640 event pairs. 0/1049 useless extension candidates. Maximal degree in co-relation 933. Up to 280 conditions per place. [2020-02-10 23:28:46,620 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 58 places, 89 transitions [2020-02-10 23:28:46,888 INFO L129 PetriNetUnfolder]: 769/1049 cut-off events. [2020-02-10 23:28:46,889 INFO L130 PetriNetUnfolder]: For 1024/1024 co-relation queries the response was YES. [2020-02-10 23:28:46,898 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2098 conditions, 1049 events. 769/1049 cut-off events. For 1024/1024 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3640 event pairs. 0/1049 useless extension candidates. Maximal degree in co-relation 933. Up to 280 conditions per place. [2020-02-10 23:28:46,925 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1904 [2020-02-10 23:28:46,926 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-02-10 23:28:47,068 INFO L206 etLargeBlockEncoding]: Checked pairs total: 532 [2020-02-10 23:28:47,069 INFO L214 etLargeBlockEncoding]: Total number of compositions: 8 [2020-02-10 23:28:47,069 INFO L160 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 706 [2020-02-10 23:28:47,303 INFO L129 PetriNetUnfolder]: 769/1040 cut-off events. [2020-02-10 23:28:47,303 INFO L130 PetriNetUnfolder]: For 1024/1024 co-relation queries the response was YES. [2020-02-10 23:28:47,303 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:47,305 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:47,305 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:47,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:47,321 INFO L82 PathProgramCache]: Analyzing trace with hash -112259505, now seen corresponding path program 1 times [2020-02-10 23:28:47,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:47,333 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781891594] [2020-02-10 23:28:47,333 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:47,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:47,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:47,523 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781891594] [2020-02-10 23:28:47,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:47,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:28:47,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392132559] [2020-02-10 23:28:47,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:28:47,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:47,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:28:47,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:28:47,553 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 107 [2020-02-10 23:28:47,555 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 81 transitions. Second operand 3 states. [2020-02-10 23:28:47,555 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:47,555 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 107 [2020-02-10 23:28:47,557 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:47,736 INFO L129 PetriNetUnfolder]: 328/480 cut-off events. [2020-02-10 23:28:47,737 INFO L130 PetriNetUnfolder]: For 840/840 co-relation queries the response was YES. [2020-02-10 23:28:47,740 INFO L76 FinitePrefix]: Finished finitePrefix Result has 978 conditions, 480 events. 328/480 cut-off events. For 840/840 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1991 event pairs. 120/600 useless extension candidates. Maximal degree in co-relation 907. Up to 140 conditions per place. [2020-02-10 23:28:47,749 INFO L145 encePairwiseOnDemand]: 100/107 looper letters, 2 selfloop transitions, 1 changer transitions 0/75 dead transitions. [2020-02-10 23:28:47,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:28:47,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:28:47,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2020-02-10 23:28:47,769 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9439252336448598 [2020-02-10 23:28:47,769 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2020-02-10 23:28:47,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2020-02-10 23:28:47,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:47,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2020-02-10 23:28:47,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:28:47,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:28:47,791 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:28:47,793 INFO L178 Difference]: Start difference. First operand has 50 places, 81 transitions. Second operand 3 states and 303 transitions. [2020-02-10 23:28:47,796 INFO L206 Difference]: Finished difference. Result has 52 places, 75 transitions [2020-02-10 23:28:47,799 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=350, PETRI_PLACES=52, PETRI_TRANSITIONS=75} [2020-02-10 23:28:47,801 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 52 places, 75 transitions [2020-02-10 23:28:47,871 INFO L129 PetriNetUnfolder]: 328/480 cut-off events. [2020-02-10 23:28:47,871 INFO L130 PetriNetUnfolder]: For 464/464 co-relation queries the response was YES. [2020-02-10 23:28:47,876 INFO L76 FinitePrefix]: Finished finitePrefix Result has 970 conditions, 480 events. 328/480 cut-off events. For 464/464 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1623 event pairs. 0/480 useless extension candidates. Maximal degree in co-relation 938. Up to 140 conditions per place. [2020-02-10 23:28:47,877 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 75 transitions [2020-02-10 23:28:47,885 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 75 transitions [2020-02-10 23:28:47,887 INFO L479 AbstractCegarLoop]: Abstraction has has 52 places, 75 transitions [2020-02-10 23:28:47,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:28:47,965 INFO L129 PetriNetUnfolder]: 328/479 cut-off events. [2020-02-10 23:28:47,965 INFO L130 PetriNetUnfolder]: For 464/464 co-relation queries the response was YES. [2020-02-10 23:28:47,966 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:47,966 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:47,967 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:47,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:47,967 INFO L82 PathProgramCache]: Analyzing trace with hash 410598267, now seen corresponding path program 1 times [2020-02-10 23:28:47,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:47,969 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990038298] [2020-02-10 23:28:47,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:47,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:48,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:48,053 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990038298] [2020-02-10 23:28:48,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:48,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:28:48,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939868410] [2020-02-10 23:28:48,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:28:48,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:48,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:28:48,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:28:48,059 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 107 [2020-02-10 23:28:48,062 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 75 transitions. Second operand 3 states. [2020-02-10 23:28:48,062 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:48,062 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 107 [2020-02-10 23:28:48,062 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:48,147 INFO L129 PetriNetUnfolder]: 292/437 cut-off events. [2020-02-10 23:28:48,147 INFO L130 PetriNetUnfolder]: For 559/559 co-relation queries the response was YES. [2020-02-10 23:28:48,150 INFO L76 FinitePrefix]: Finished finitePrefix Result has 944 conditions, 437 events. 292/437 cut-off events. For 559/559 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1775 event pairs. 7/444 useless extension candidates. Maximal degree in co-relation 910. Up to 140 conditions per place. [2020-02-10 23:28:48,159 INFO L145 encePairwiseOnDemand]: 104/107 looper letters, 6 selfloop transitions, 1 changer transitions 0/73 dead transitions. [2020-02-10 23:28:48,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:28:48,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:28:48,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2020-02-10 23:28:48,173 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9439252336448598 [2020-02-10 23:28:48,179 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2020-02-10 23:28:48,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2020-02-10 23:28:48,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:48,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2020-02-10 23:28:48,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:28:48,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:28:48,188 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:28:48,189 INFO L178 Difference]: Start difference. First operand has 52 places, 75 transitions. Second operand 3 states and 303 transitions. [2020-02-10 23:28:48,191 INFO L206 Difference]: Finished difference. Result has 54 places, 73 transitions [2020-02-10 23:28:48,192 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=342, PETRI_PLACES=54, PETRI_TRANSITIONS=73} [2020-02-10 23:28:48,192 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 54 places, 73 transitions [2020-02-10 23:28:48,270 INFO L129 PetriNetUnfolder]: 292/437 cut-off events. [2020-02-10 23:28:48,270 INFO L130 PetriNetUnfolder]: For 422/422 co-relation queries the response was YES. [2020-02-10 23:28:48,274 INFO L76 FinitePrefix]: Finished finitePrefix Result has 886 conditions, 437 events. 292/437 cut-off events. For 422/422 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1475 event pairs. 0/437 useless extension candidates. Maximal degree in co-relation 865. Up to 140 conditions per place. [2020-02-10 23:28:48,274 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 73 transitions [2020-02-10 23:28:48,282 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 73 transitions [2020-02-10 23:28:48,282 INFO L479 AbstractCegarLoop]: Abstraction has has 54 places, 73 transitions [2020-02-10 23:28:48,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:28:48,377 INFO L129 PetriNetUnfolder]: 292/436 cut-off events. [2020-02-10 23:28:48,377 INFO L130 PetriNetUnfolder]: For 422/422 co-relation queries the response was YES. [2020-02-10 23:28:48,377 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:48,377 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:48,378 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:48,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:48,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1144141215, now seen corresponding path program 1 times [2020-02-10 23:28:48,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:48,379 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767110735] [2020-02-10 23:28:48,379 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:48,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:48,424 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767110735] [2020-02-10 23:28:48,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:48,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:28:48,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627004375] [2020-02-10 23:28:48,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:28:48,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:48,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:28:48,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:28:48,428 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 107 [2020-02-10 23:28:48,428 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 73 transitions. Second operand 3 states. [2020-02-10 23:28:48,428 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:48,428 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 107 [2020-02-10 23:28:48,429 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:48,527 INFO L129 PetriNetUnfolder]: 287/431 cut-off events. [2020-02-10 23:28:48,527 INFO L130 PetriNetUnfolder]: For 536/536 co-relation queries the response was YES. [2020-02-10 23:28:48,531 INFO L76 FinitePrefix]: Finished finitePrefix Result has 934 conditions, 431 events. 287/431 cut-off events. For 536/536 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1762 event pairs. 1/432 useless extension candidates. Maximal degree in co-relation 911. Up to 140 conditions per place. [2020-02-10 23:28:48,541 INFO L145 encePairwiseOnDemand]: 105/107 looper letters, 7 selfloop transitions, 1 changer transitions 0/72 dead transitions. [2020-02-10 23:28:48,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:28:48,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:28:48,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2020-02-10 23:28:48,543 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9439252336448598 [2020-02-10 23:28:48,544 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2020-02-10 23:28:48,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2020-02-10 23:28:48,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:48,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2020-02-10 23:28:48,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:28:48,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:28:48,548 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:28:48,548 INFO L178 Difference]: Start difference. First operand has 54 places, 73 transitions. Second operand 3 states and 303 transitions. [2020-02-10 23:28:48,551 INFO L206 Difference]: Finished difference. Result has 56 places, 72 transitions [2020-02-10 23:28:48,552 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=339, PETRI_PLACES=56, PETRI_TRANSITIONS=72} [2020-02-10 23:28:48,552 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 56 places, 72 transitions [2020-02-10 23:28:48,620 INFO L129 PetriNetUnfolder]: 287/431 cut-off events. [2020-02-10 23:28:48,620 INFO L130 PetriNetUnfolder]: For 417/417 co-relation queries the response was YES. [2020-02-10 23:28:48,624 INFO L76 FinitePrefix]: Finished finitePrefix Result has 876 conditions, 431 events. 287/431 cut-off events. For 417/417 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1469 event pairs. 0/431 useless extension candidates. Maximal degree in co-relation 857. Up to 140 conditions per place. [2020-02-10 23:28:48,625 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 72 transitions [2020-02-10 23:28:48,634 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 72 transitions [2020-02-10 23:28:48,634 INFO L479 AbstractCegarLoop]: Abstraction has has 56 places, 72 transitions [2020-02-10 23:28:48,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:28:48,693 INFO L129 PetriNetUnfolder]: 287/430 cut-off events. [2020-02-10 23:28:48,694 INFO L130 PetriNetUnfolder]: For 417/417 co-relation queries the response was YES. [2020-02-10 23:28:48,694 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:48,694 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:48,695 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:48,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:48,695 INFO L82 PathProgramCache]: Analyzing trace with hash -186314277, now seen corresponding path program 1 times [2020-02-10 23:28:48,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:48,696 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085452382] [2020-02-10 23:28:48,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:48,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:48,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:48,748 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085452382] [2020-02-10 23:28:48,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:48,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:28:48,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805067874] [2020-02-10 23:28:48,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:28:48,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:48,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:28:48,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:28:48,752 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 107 [2020-02-10 23:28:48,752 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 72 transitions. Second operand 3 states. [2020-02-10 23:28:48,753 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:48,753 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 107 [2020-02-10 23:28:48,753 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:48,800 INFO L129 PetriNetUnfolder]: 113/201 cut-off events. [2020-02-10 23:28:48,801 INFO L130 PetriNetUnfolder]: For 354/354 co-relation queries the response was YES. [2020-02-10 23:28:48,802 INFO L76 FinitePrefix]: Finished finitePrefix Result has 426 conditions, 201 events. 113/201 cut-off events. For 354/354 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 671 event pairs. 50/251 useless extension candidates. Maximal degree in co-relation 406. Up to 60 conditions per place. [2020-02-10 23:28:48,806 INFO L145 encePairwiseOnDemand]: 101/107 looper letters, 3 selfloop transitions, 1 changer transitions 0/67 dead transitions. [2020-02-10 23:28:48,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:28:48,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:28:48,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2020-02-10 23:28:48,809 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9439252336448598 [2020-02-10 23:28:48,809 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2020-02-10 23:28:48,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2020-02-10 23:28:48,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:48,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2020-02-10 23:28:48,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:28:48,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:28:48,812 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:28:48,813 INFO L178 Difference]: Start difference. First operand has 56 places, 72 transitions. Second operand 3 states and 303 transitions. [2020-02-10 23:28:48,815 INFO L206 Difference]: Finished difference. Result has 58 places, 67 transitions [2020-02-10 23:28:48,815 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=316, PETRI_PLACES=58, PETRI_TRANSITIONS=67} [2020-02-10 23:28:48,815 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 58 places, 67 transitions [2020-02-10 23:28:48,840 INFO L129 PetriNetUnfolder]: 113/201 cut-off events. [2020-02-10 23:28:48,841 INFO L130 PetriNetUnfolder]: For 188/188 co-relation queries the response was YES. [2020-02-10 23:28:48,842 INFO L76 FinitePrefix]: Finished finitePrefix Result has 418 conditions, 201 events. 113/201 cut-off events. For 188/188 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 610 event pairs. 0/201 useless extension candidates. Maximal degree in co-relation 398. Up to 60 conditions per place. [2020-02-10 23:28:48,843 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 67 transitions [2020-02-10 23:28:48,846 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 67 transitions [2020-02-10 23:28:48,847 INFO L479 AbstractCegarLoop]: Abstraction has has 58 places, 67 transitions [2020-02-10 23:28:48,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:28:48,872 INFO L129 PetriNetUnfolder]: 113/200 cut-off events. [2020-02-10 23:28:48,872 INFO L130 PetriNetUnfolder]: For 188/188 co-relation queries the response was YES. [2020-02-10 23:28:48,873 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:48,879 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:48,879 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:48,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:48,880 INFO L82 PathProgramCache]: Analyzing trace with hash -192224979, now seen corresponding path program 1 times [2020-02-10 23:28:48,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:48,885 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694133919] [2020-02-10 23:28:48,886 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:48,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:48,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:48,925 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694133919] [2020-02-10 23:28:48,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:48,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:28:48,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058994282] [2020-02-10 23:28:48,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:28:48,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:48,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:28:48,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:28:48,928 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 107 [2020-02-10 23:28:48,929 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 67 transitions. Second operand 3 states. [2020-02-10 23:28:48,929 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:48,929 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 107 [2020-02-10 23:28:48,930 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:48,976 INFO L129 PetriNetUnfolder]: 68/141 cut-off events. [2020-02-10 23:28:48,977 INFO L130 PetriNetUnfolder]: For 195/195 co-relation queries the response was YES. [2020-02-10 23:28:48,978 INFO L76 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 141 events. 68/141 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 432 event pairs. 10/151 useless extension candidates. Maximal degree in co-relation 297. Up to 30 conditions per place. [2020-02-10 23:28:48,983 INFO L145 encePairwiseOnDemand]: 103/107 looper letters, 5 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2020-02-10 23:28:48,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:28:48,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:28:48,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2020-02-10 23:28:48,986 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9439252336448598 [2020-02-10 23:28:48,986 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2020-02-10 23:28:48,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2020-02-10 23:28:48,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:48,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2020-02-10 23:28:48,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:28:48,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:28:48,989 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:28:48,989 INFO L178 Difference]: Start difference. First operand has 58 places, 67 transitions. Second operand 3 states and 303 transitions. [2020-02-10 23:28:48,990 INFO L206 Difference]: Finished difference. Result has 60 places, 64 transitions [2020-02-10 23:28:48,990 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=303, PETRI_PLACES=60, PETRI_TRANSITIONS=64} [2020-02-10 23:28:48,990 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 60 places, 64 transitions [2020-02-10 23:28:49,017 INFO L129 PetriNetUnfolder]: 68/141 cut-off events. [2020-02-10 23:28:49,017 INFO L130 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2020-02-10 23:28:49,018 INFO L76 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 141 events. 68/141 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 400 event pairs. 0/141 useless extension candidates. Maximal degree in co-relation 279. Up to 30 conditions per place. [2020-02-10 23:28:49,019 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 64 transitions [2020-02-10 23:28:49,022 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 64 transitions [2020-02-10 23:28:49,022 INFO L479 AbstractCegarLoop]: Abstraction has has 60 places, 64 transitions [2020-02-10 23:28:49,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:28:49,043 INFO L129 PetriNetUnfolder]: 68/140 cut-off events. [2020-02-10 23:28:49,044 INFO L130 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2020-02-10 23:28:49,044 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:49,044 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:49,044 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:49,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:49,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1473391803, now seen corresponding path program 1 times [2020-02-10 23:28:49,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:49,045 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579183622] [2020-02-10 23:28:49,046 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:49,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:49,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:49,089 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579183622] [2020-02-10 23:28:49,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:49,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:28:49,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116445993] [2020-02-10 23:28:49,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:28:49,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:49,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:28:49,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:28:49,093 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 107 [2020-02-10 23:28:49,093 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 64 transitions. Second operand 3 states. [2020-02-10 23:28:49,094 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:49,094 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 107 [2020-02-10 23:28:49,094 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:49,119 INFO L129 PetriNetUnfolder]: 10/45 cut-off events. [2020-02-10 23:28:49,119 INFO L130 PetriNetUnfolder]: For 87/87 co-relation queries the response was YES. [2020-02-10 23:28:49,120 INFO L76 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 45 events. 10/45 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 72 event pairs. 17/62 useless extension candidates. Maximal degree in co-relation 89. Up to 8 conditions per place. [2020-02-10 23:28:49,122 INFO L145 encePairwiseOnDemand]: 99/107 looper letters, 1 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2020-02-10 23:28:49,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:28:49,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:28:49,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2020-02-10 23:28:49,124 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9439252336448598 [2020-02-10 23:28:49,124 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2020-02-10 23:28:49,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2020-02-10 23:28:49,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:49,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2020-02-10 23:28:49,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:28:49,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:28:49,127 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:28:49,127 INFO L178 Difference]: Start difference. First operand has 60 places, 64 transitions. Second operand 3 states and 303 transitions. [2020-02-10 23:28:49,130 INFO L206 Difference]: Finished difference. Result has 62 places, 39 transitions [2020-02-10 23:28:49,130 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=62, PETRI_TRANSITIONS=39} [2020-02-10 23:28:49,130 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 62 places, 39 transitions [2020-02-10 23:28:49,138 INFO L129 PetriNetUnfolder]: 10/45 cut-off events. [2020-02-10 23:28:49,138 INFO L130 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2020-02-10 23:28:49,139 INFO L76 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 45 events. 10/45 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 67 event pairs. 0/45 useless extension candidates. Maximal degree in co-relation 88. Up to 8 conditions per place. [2020-02-10 23:28:49,139 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 39 transitions [2020-02-10 23:28:49,140 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 39 transitions [2020-02-10 23:28:49,141 INFO L479 AbstractCegarLoop]: Abstraction has has 62 places, 39 transitions [2020-02-10 23:28:49,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:28:49,148 INFO L129 PetriNetUnfolder]: 10/44 cut-off events. [2020-02-10 23:28:49,149 INFO L130 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2020-02-10 23:28:49,149 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:49,149 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:49,149 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:49,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:49,150 INFO L82 PathProgramCache]: Analyzing trace with hash 2114079275, now seen corresponding path program 1 times [2020-02-10 23:28:49,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:49,150 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778371879] [2020-02-10 23:28:49,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:49,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:49,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:49,207 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778371879] [2020-02-10 23:28:49,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:49,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-02-10 23:28:49,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871308099] [2020-02-10 23:28:49,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-02-10 23:28:49,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:49,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-02-10 23:28:49,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-02-10 23:28:49,210 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 107 [2020-02-10 23:28:49,211 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 39 transitions. Second operand 3 states. [2020-02-10 23:28:49,211 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:49,211 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 107 [2020-02-10 23:28:49,211 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:49,225 INFO L129 PetriNetUnfolder]: 0/25 cut-off events. [2020-02-10 23:28:49,225 INFO L130 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2020-02-10 23:28:49,226 INFO L76 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 25 events. 0/25 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs. 4/29 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2020-02-10 23:28:49,227 INFO L145 encePairwiseOnDemand]: 102/107 looper letters, 1 selfloop transitions, 1 changer transitions 0/25 dead transitions. [2020-02-10 23:28:49,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-02-10 23:28:49,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-02-10 23:28:49,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 300 transitions. [2020-02-10 23:28:49,229 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.9345794392523364 [2020-02-10 23:28:49,230 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 300 transitions. [2020-02-10 23:28:49,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 300 transitions. [2020-02-10 23:28:49,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:49,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 300 transitions. [2020-02-10 23:28:49,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-02-10 23:28:49,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-02-10 23:28:49,252 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-02-10 23:28:49,252 INFO L178 Difference]: Start difference. First operand has 62 places, 39 transitions. Second operand 3 states and 300 transitions. [2020-02-10 23:28:49,253 INFO L206 Difference]: Finished difference. Result has 64 places, 25 transitions [2020-02-10 23:28:49,253 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=64, PETRI_TRANSITIONS=25} [2020-02-10 23:28:49,254 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 64 places, 25 transitions [2020-02-10 23:28:49,262 INFO L129 PetriNetUnfolder]: 0/25 cut-off events. [2020-02-10 23:28:49,262 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2020-02-10 23:28:49,263 INFO L76 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 25 events. 0/25 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs. 0/25 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2020-02-10 23:28:49,263 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 25 transitions [2020-02-10 23:28:49,264 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 25 transitions [2020-02-10 23:28:49,264 INFO L479 AbstractCegarLoop]: Abstraction has has 64 places, 25 transitions [2020-02-10 23:28:49,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-02-10 23:28:49,269 INFO L129 PetriNetUnfolder]: 0/24 cut-off events. [2020-02-10 23:28:49,269 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2020-02-10 23:28:49,269 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:49,269 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:49,269 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:49,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:49,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1424923719, now seen corresponding path program 1 times [2020-02-10 23:28:49,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:49,271 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085418646] [2020-02-10 23:28:49,271 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:49,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:49,924 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085418646] [2020-02-10 23:28:49,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:49,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-02-10 23:28:49,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091862164] [2020-02-10 23:28:49,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-02-10 23:28:49,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:49,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-02-10 23:28:49,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-02-10 23:28:49,928 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2020-02-10 23:28:49,928 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 25 transitions. Second operand 10 states. [2020-02-10 23:28:49,929 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:49,929 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2020-02-10 23:28:49,929 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:50,451 INFO L129 PetriNetUnfolder]: 963/1556 cut-off events. [2020-02-10 23:28:50,452 INFO L130 PetriNetUnfolder]: For 203/203 co-relation queries the response was YES. [2020-02-10 23:28:50,460 INFO L76 FinitePrefix]: Finished finitePrefix Result has 3144 conditions, 1556 events. 963/1556 cut-off events. For 203/203 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 8843 event pairs. 1/1465 useless extension candidates. Maximal degree in co-relation 3120. Up to 513 conditions per place. [2020-02-10 23:28:50,482 INFO L145 encePairwiseOnDemand]: 98/107 looper letters, 35 selfloop transitions, 7 changer transitions 1/59 dead transitions. [2020-02-10 23:28:50,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-02-10 23:28:50,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-02-10 23:28:50,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2020-02-10 23:28:50,486 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2020-02-10 23:28:50,486 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2020-02-10 23:28:50,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2020-02-10 23:28:50,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:50,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2020-02-10 23:28:50,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-02-10 23:28:50,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-02-10 23:28:50,493 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-02-10 23:28:50,493 INFO L178 Difference]: Start difference. First operand has 64 places, 25 transitions. Second operand 10 states and 934 transitions. [2020-02-10 23:28:50,493 INFO L206 Difference]: Finished difference. Result has 81 places, 31 transitions [2020-02-10 23:28:50,494 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=167, PETRI_PLACES=81, PETRI_TRANSITIONS=31} [2020-02-10 23:28:50,494 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 81 places, 31 transitions [2020-02-10 23:28:50,506 INFO L129 PetriNetUnfolder]: 0/82 cut-off events. [2020-02-10 23:28:50,506 INFO L130 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2020-02-10 23:28:50,508 INFO L76 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 82 events. 0/82 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 332 event pairs. 0/71 useless extension candidates. Maximal degree in co-relation 184. Up to 9 conditions per place. [2020-02-10 23:28:50,508 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 31 transitions [2020-02-10 23:28:50,518 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 31 transitions [2020-02-10 23:28:50,519 INFO L479 AbstractCegarLoop]: Abstraction has has 80 places, 31 transitions [2020-02-10 23:28:50,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-02-10 23:28:50,530 INFO L129 PetriNetUnfolder]: 0/75 cut-off events. [2020-02-10 23:28:50,534 INFO L130 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2020-02-10 23:28:50,534 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:50,534 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:50,535 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:50,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:50,535 INFO L82 PathProgramCache]: Analyzing trace with hash 927112641, now seen corresponding path program 2 times [2020-02-10 23:28:50,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:50,536 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931669690] [2020-02-10 23:28:50,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:50,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:51,054 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 26 [2020-02-10 23:28:51,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:51,172 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931669690] [2020-02-10 23:28:51,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:51,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-02-10 23:28:51,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942027104] [2020-02-10 23:28:51,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-02-10 23:28:51,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:51,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-02-10 23:28:51,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-02-10 23:28:51,176 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2020-02-10 23:28:51,176 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 31 transitions. Second operand 10 states. [2020-02-10 23:28:51,176 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:51,176 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2020-02-10 23:28:51,177 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:52,065 INFO L129 PetriNetUnfolder]: 1177/1933 cut-off events. [2020-02-10 23:28:52,066 INFO L130 PetriNetUnfolder]: For 2495/2503 co-relation queries the response was YES. [2020-02-10 23:28:52,082 INFO L76 FinitePrefix]: Finished finitePrefix Result has 5847 conditions, 1933 events. 1177/1933 cut-off events. For 2495/2503 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 10606 event pairs. 1/1838 useless extension candidates. Maximal degree in co-relation 5814. Up to 678 conditions per place. [2020-02-10 23:28:52,148 INFO L145 encePairwiseOnDemand]: 98/107 looper letters, 54 selfloop transitions, 9 changer transitions 1/80 dead transitions. [2020-02-10 23:28:52,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-02-10 23:28:52,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-02-10 23:28:52,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2020-02-10 23:28:52,155 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2020-02-10 23:28:52,156 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2020-02-10 23:28:52,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2020-02-10 23:28:52,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:52,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2020-02-10 23:28:52,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-02-10 23:28:52,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-02-10 23:28:52,164 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-02-10 23:28:52,164 INFO L178 Difference]: Start difference. First operand has 80 places, 31 transitions. Second operand 10 states and 934 transitions. [2020-02-10 23:28:52,165 INFO L206 Difference]: Finished difference. Result has 97 places, 39 transitions [2020-02-10 23:28:52,166 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=265, PETRI_PLACES=97, PETRI_TRANSITIONS=39} [2020-02-10 23:28:52,166 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 97 places, 39 transitions [2020-02-10 23:28:52,207 INFO L129 PetriNetUnfolder]: 0/169 cut-off events. [2020-02-10 23:28:52,207 INFO L130 PetriNetUnfolder]: For 231/237 co-relation queries the response was YES. [2020-02-10 23:28:52,209 INFO L76 FinitePrefix]: Finished finitePrefix Result has 477 conditions, 169 events. 0/169 cut-off events. For 231/237 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1088 event pairs. 0/140 useless extension candidates. Maximal degree in co-relation 436. Up to 24 conditions per place. [2020-02-10 23:28:52,210 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 39 transitions [2020-02-10 23:28:52,214 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 39 transitions [2020-02-10 23:28:52,215 INFO L479 AbstractCegarLoop]: Abstraction has has 96 places, 39 transitions [2020-02-10 23:28:52,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-02-10 23:28:52,249 INFO L129 PetriNetUnfolder]: 0/147 cut-off events. [2020-02-10 23:28:52,249 INFO L130 PetriNetUnfolder]: For 231/237 co-relation queries the response was YES. [2020-02-10 23:28:52,249 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:52,250 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:52,250 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:52,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:52,250 INFO L82 PathProgramCache]: Analyzing trace with hash -132167175, now seen corresponding path program 3 times [2020-02-10 23:28:52,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:52,251 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92537186] [2020-02-10 23:28:52,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:52,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:52,751 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 26 [2020-02-10 23:28:52,891 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 27 [2020-02-10 23:28:52,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:52,903 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92537186] [2020-02-10 23:28:52,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:52,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-02-10 23:28:52,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110798938] [2020-02-10 23:28:52,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-02-10 23:28:52,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:52,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-02-10 23:28:52,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-02-10 23:28:52,916 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2020-02-10 23:28:52,917 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 39 transitions. Second operand 10 states. [2020-02-10 23:28:52,917 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:52,917 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2020-02-10 23:28:52,917 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:54,068 INFO L129 PetriNetUnfolder]: 1263/2243 cut-off events. [2020-02-10 23:28:54,068 INFO L130 PetriNetUnfolder]: For 5912/5920 co-relation queries the response was YES. [2020-02-10 23:28:54,098 INFO L76 FinitePrefix]: Finished finitePrefix Result has 7998 conditions, 2243 events. 1263/2243 cut-off events. For 5912/5920 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 13764 event pairs. 1/2147 useless extension candidates. Maximal degree in co-relation 7956. Up to 678 conditions per place. [2020-02-10 23:28:54,159 INFO L145 encePairwiseOnDemand]: 98/107 looper letters, 57 selfloop transitions, 11 changer transitions 1/85 dead transitions. [2020-02-10 23:28:54,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-02-10 23:28:54,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-02-10 23:28:54,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2020-02-10 23:28:54,164 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2020-02-10 23:28:54,164 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2020-02-10 23:28:54,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2020-02-10 23:28:54,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:54,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2020-02-10 23:28:54,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-02-10 23:28:54,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-02-10 23:28:54,170 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-02-10 23:28:54,170 INFO L178 Difference]: Start difference. First operand has 96 places, 39 transitions. Second operand 10 states and 934 transitions. [2020-02-10 23:28:54,171 INFO L206 Difference]: Finished difference. Result has 112 places, 46 transitions [2020-02-10 23:28:54,172 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=367, PETRI_PLACES=112, PETRI_TRANSITIONS=46} [2020-02-10 23:28:54,172 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 112 places, 46 transitions [2020-02-10 23:28:54,253 INFO L129 PetriNetUnfolder]: 0/309 cut-off events. [2020-02-10 23:28:54,253 INFO L130 PetriNetUnfolder]: For 626/635 co-relation queries the response was YES. [2020-02-10 23:28:54,258 INFO L76 FinitePrefix]: Finished finitePrefix Result has 935 conditions, 309 events. 0/309 cut-off events. For 626/635 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2594 event pairs. 0/262 useless extension candidates. Maximal degree in co-relation 886. Up to 38 conditions per place. [2020-02-10 23:28:54,258 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 46 transitions [2020-02-10 23:28:54,267 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 46 transitions [2020-02-10 23:28:54,268 INFO L479 AbstractCegarLoop]: Abstraction has has 111 places, 46 transitions [2020-02-10 23:28:54,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-02-10 23:28:54,320 INFO L129 PetriNetUnfolder]: 0/273 cut-off events. [2020-02-10 23:28:54,321 INFO L130 PetriNetUnfolder]: For 623/632 co-relation queries the response was YES. [2020-02-10 23:28:54,321 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:54,321 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:54,321 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:54,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:54,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1265521427, now seen corresponding path program 4 times [2020-02-10 23:28:54,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:54,322 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429781458] [2020-02-10 23:28:54,322 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:54,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:54,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:54,854 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429781458] [2020-02-10 23:28:54,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:54,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-02-10 23:28:54,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673040145] [2020-02-10 23:28:54,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-02-10 23:28:54,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:54,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-02-10 23:28:54,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-02-10 23:28:54,857 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2020-02-10 23:28:54,857 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 46 transitions. Second operand 10 states. [2020-02-10 23:28:54,857 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:54,858 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2020-02-10 23:28:54,858 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:28:56,618 INFO L129 PetriNetUnfolder]: 1559/3269 cut-off events. [2020-02-10 23:28:56,618 INFO L130 PetriNetUnfolder]: For 14093/14093 co-relation queries the response was YES. [2020-02-10 23:28:56,652 INFO L76 FinitePrefix]: Finished finitePrefix Result has 13466 conditions, 3269 events. 1559/3269 cut-off events. For 14093/14093 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 24938 event pairs. 1/3167 useless extension candidates. Maximal degree in co-relation 13416. Up to 1036 conditions per place. [2020-02-10 23:28:56,718 INFO L145 encePairwiseOnDemand]: 98/107 looper letters, 70 selfloop transitions, 16 changer transitions 1/103 dead transitions. [2020-02-10 23:28:56,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-02-10 23:28:56,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-02-10 23:28:56,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2020-02-10 23:28:56,722 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2020-02-10 23:28:56,722 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2020-02-10 23:28:56,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2020-02-10 23:28:56,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:28:56,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2020-02-10 23:28:56,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-02-10 23:28:56,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-02-10 23:28:56,727 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-02-10 23:28:56,727 INFO L178 Difference]: Start difference. First operand has 111 places, 46 transitions. Second operand 10 states and 934 transitions. [2020-02-10 23:28:56,728 INFO L206 Difference]: Finished difference. Result has 128 places, 58 transitions [2020-02-10 23:28:56,728 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=560, PETRI_PLACES=128, PETRI_TRANSITIONS=58} [2020-02-10 23:28:56,729 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 128 places, 58 transitions [2020-02-10 23:28:56,928 INFO L129 PetriNetUnfolder]: 0/708 cut-off events. [2020-02-10 23:28:56,928 INFO L130 PetriNetUnfolder]: For 2189/2211 co-relation queries the response was YES. [2020-02-10 23:28:56,938 INFO L76 FinitePrefix]: Finished finitePrefix Result has 2293 conditions, 708 events. 0/708 cut-off events. For 2189/2211 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7660 event pairs. 0/611 useless extension candidates. Maximal degree in co-relation 2235. Up to 80 conditions per place. [2020-02-10 23:28:56,939 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 58 transitions [2020-02-10 23:28:56,956 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 58 transitions [2020-02-10 23:28:56,957 INFO L479 AbstractCegarLoop]: Abstraction has has 127 places, 58 transitions [2020-02-10 23:28:56,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-02-10 23:28:57,116 INFO L129 PetriNetUnfolder]: 0/630 cut-off events. [2020-02-10 23:28:57,116 INFO L130 PetriNetUnfolder]: For 2181/2206 co-relation queries the response was YES. [2020-02-10 23:28:57,117 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:28:57,117 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:28:57,117 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:28:57,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:28:57,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1104503285, now seen corresponding path program 5 times [2020-02-10 23:28:57,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:28:57,118 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541037738] [2020-02-10 23:28:57,118 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:28:57,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:28:57,625 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 26 [2020-02-10 23:28:57,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:28:57,632 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541037738] [2020-02-10 23:28:57,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:28:57,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-02-10 23:28:57,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932113768] [2020-02-10 23:28:57,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-02-10 23:28:57,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:28:57,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-02-10 23:28:57,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-02-10 23:28:57,635 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2020-02-10 23:28:57,635 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 58 transitions. Second operand 10 states. [2020-02-10 23:28:57,636 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:28:57,636 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2020-02-10 23:28:57,636 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:00,427 INFO L129 PetriNetUnfolder]: 1660/3973 cut-off events. [2020-02-10 23:29:00,428 INFO L130 PetriNetUnfolder]: For 27610/27838 co-relation queries the response was YES. [2020-02-10 23:29:00,469 INFO L76 FinitePrefix]: Finished finitePrefix Result has 18711 conditions, 3973 events. 1660/3973 cut-off events. For 27610/27838 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 34892 event pairs. 1/3872 useless extension candidates. Maximal degree in co-relation 18652. Up to 942 conditions per place. [2020-02-10 23:29:00,552 INFO L145 encePairwiseOnDemand]: 98/107 looper letters, 80 selfloop transitions, 16 changer transitions 1/113 dead transitions. [2020-02-10 23:29:00,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-02-10 23:29:00,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-02-10 23:29:00,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2020-02-10 23:29:00,556 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2020-02-10 23:29:00,556 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2020-02-10 23:29:00,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2020-02-10 23:29:00,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:00,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2020-02-10 23:29:00,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-02-10 23:29:00,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-02-10 23:29:00,561 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-02-10 23:29:00,561 INFO L178 Difference]: Start difference. First operand has 127 places, 58 transitions. Second operand 10 states and 934 transitions. [2020-02-10 23:29:00,562 INFO L206 Difference]: Finished difference. Result has 143 places, 67 transitions [2020-02-10 23:29:00,562 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=748, PETRI_PLACES=143, PETRI_TRANSITIONS=67} [2020-02-10 23:29:00,563 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 143 places, 67 transitions [2020-02-10 23:29:00,870 INFO L129 PetriNetUnfolder]: 0/1089 cut-off events. [2020-02-10 23:29:00,870 INFO L130 PetriNetUnfolder]: For 4613/4677 co-relation queries the response was YES. [2020-02-10 23:29:00,879 INFO L76 FinitePrefix]: Finished finitePrefix Result has 3790 conditions, 1089 events. 0/1089 cut-off events. For 4613/4677 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 13199 event pairs. 5/967 useless extension candidates. Maximal degree in co-relation 3724. Up to 118 conditions per place. [2020-02-10 23:29:00,880 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 67 transitions [2020-02-10 23:29:00,906 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 67 transitions [2020-02-10 23:29:00,907 INFO L479 AbstractCegarLoop]: Abstraction has has 142 places, 67 transitions [2020-02-10 23:29:00,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-02-10 23:29:01,179 INFO L129 PetriNetUnfolder]: 0/973 cut-off events. [2020-02-10 23:29:01,180 INFO L130 PetriNetUnfolder]: For 4601/4659 co-relation queries the response was YES. [2020-02-10 23:29:01,180 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:01,180 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:29:01,180 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:01,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:01,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1425184219, now seen corresponding path program 6 times [2020-02-10 23:29:01,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:01,181 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776779722] [2020-02-10 23:29:01,181 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:01,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:29:01,650 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776779722] [2020-02-10 23:29:01,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:01,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-02-10 23:29:01,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355391413] [2020-02-10 23:29:01,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-02-10 23:29:01,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:01,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-02-10 23:29:01,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-02-10 23:29:01,652 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2020-02-10 23:29:01,653 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 67 transitions. Second operand 10 states. [2020-02-10 23:29:01,653 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:01,653 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2020-02-10 23:29:01,653 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:06,168 INFO L129 PetriNetUnfolder]: 1973/5332 cut-off events. [2020-02-10 23:29:06,168 INFO L130 PetriNetUnfolder]: For 43948/44138 co-relation queries the response was YES. [2020-02-10 23:29:06,214 INFO L76 FinitePrefix]: Finished finitePrefix Result has 25801 conditions, 5332 events. 1973/5332 cut-off events. For 43948/44138 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 54379 event pairs. 1/5225 useless extension candidates. Maximal degree in co-relation 25734. Up to 1858 conditions per place. [2020-02-10 23:29:06,295 INFO L145 encePairwiseOnDemand]: 98/107 looper letters, 106 selfloop transitions, 20 changer transitions 3/145 dead transitions. [2020-02-10 23:29:06,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-02-10 23:29:06,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-02-10 23:29:06,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2020-02-10 23:29:06,299 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2020-02-10 23:29:06,299 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2020-02-10 23:29:06,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2020-02-10 23:29:06,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:06,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2020-02-10 23:29:06,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-02-10 23:29:06,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-02-10 23:29:06,304 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-02-10 23:29:06,305 INFO L178 Difference]: Start difference. First operand has 142 places, 67 transitions. Second operand 10 states and 934 transitions. [2020-02-10 23:29:06,306 INFO L206 Difference]: Finished difference. Result has 159 places, 81 transitions [2020-02-10 23:29:06,306 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1052, PETRI_PLACES=159, PETRI_TRANSITIONS=81} [2020-02-10 23:29:06,306 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 159 places, 81 transitions [2020-02-10 23:29:06,903 INFO L129 PetriNetUnfolder]: 0/1634 cut-off events. [2020-02-10 23:29:06,903 INFO L130 PetriNetUnfolder]: For 9732/9814 co-relation queries the response was YES. [2020-02-10 23:29:06,919 INFO L76 FinitePrefix]: Finished finitePrefix Result has 6135 conditions, 1634 events. 0/1634 cut-off events. For 9732/9814 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 21964 event pairs. 4/1454 useless extension candidates. Maximal degree in co-relation 6060. Up to 176 conditions per place. [2020-02-10 23:29:06,919 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 81 transitions [2020-02-10 23:29:06,948 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 81 transitions [2020-02-10 23:29:06,949 INFO L479 AbstractCegarLoop]: Abstraction has has 158 places, 81 transitions [2020-02-10 23:29:06,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-02-10 23:29:07,354 INFO L129 PetriNetUnfolder]: 0/1460 cut-off events. [2020-02-10 23:29:07,355 INFO L130 PetriNetUnfolder]: For 9750/9834 co-relation queries the response was YES. [2020-02-10 23:29:07,355 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:07,355 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:29:07,355 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:07,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:07,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1497595543, now seen corresponding path program 7 times [2020-02-10 23:29:07,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:07,356 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725906104] [2020-02-10 23:29:07,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:07,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:07,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:29:07,834 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725906104] [2020-02-10 23:29:07,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:07,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-02-10 23:29:07,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197169222] [2020-02-10 23:29:07,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-02-10 23:29:07,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:07,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-02-10 23:29:07,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-02-10 23:29:07,837 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2020-02-10 23:29:07,838 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 81 transitions. Second operand 10 states. [2020-02-10 23:29:07,838 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:07,838 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2020-02-10 23:29:07,838 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:16,087 INFO L129 PetriNetUnfolder]: 2388/7293 cut-off events. [2020-02-10 23:29:16,088 INFO L130 PetriNetUnfolder]: For 77667/78351 co-relation queries the response was YES. [2020-02-10 23:29:16,159 INFO L76 FinitePrefix]: Finished finitePrefix Result has 37554 conditions, 7293 events. 2388/7293 cut-off events. For 77667/78351 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 82497 event pairs. 1/7168 useless extension candidates. Maximal degree in co-relation 37478. Up to 2225 conditions per place. [2020-02-10 23:29:16,283 INFO L145 encePairwiseOnDemand]: 98/107 looper letters, 117 selfloop transitions, 28 changer transitions 0/161 dead transitions. [2020-02-10 23:29:16,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-02-10 23:29:16,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-02-10 23:29:16,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2020-02-10 23:29:16,286 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2020-02-10 23:29:16,286 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2020-02-10 23:29:16,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2020-02-10 23:29:16,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:16,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2020-02-10 23:29:16,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-02-10 23:29:16,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-02-10 23:29:16,292 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-02-10 23:29:16,292 INFO L178 Difference]: Start difference. First operand has 158 places, 81 transitions. Second operand 10 states and 934 transitions. [2020-02-10 23:29:16,293 INFO L206 Difference]: Finished difference. Result has 175 places, 99 transitions [2020-02-10 23:29:16,294 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=1052, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1465, PETRI_PLACES=175, PETRI_TRANSITIONS=99} [2020-02-10 23:29:16,294 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 175 places, 99 transitions [2020-02-10 23:29:17,982 INFO L129 PetriNetUnfolder]: 0/2742 cut-off events. [2020-02-10 23:29:17,982 INFO L130 PetriNetUnfolder]: For 21302/21483 co-relation queries the response was YES. [2020-02-10 23:29:18,014 INFO L76 FinitePrefix]: Finished finitePrefix Result has 11126 conditions, 2742 events. 0/2742 cut-off events. For 21302/21483 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 40752 event pairs. 7/2468 useless extension candidates. Maximal degree in co-relation 11042. Up to 286 conditions per place. [2020-02-10 23:29:18,014 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 99 transitions [2020-02-10 23:29:18,066 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 99 transitions [2020-02-10 23:29:18,066 INFO L479 AbstractCegarLoop]: Abstraction has has 175 places, 99 transitions [2020-02-10 23:29:18,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-02-10 23:29:19,006 INFO L129 PetriNetUnfolder]: 0/2459 cut-off events. [2020-02-10 23:29:19,006 INFO L130 PetriNetUnfolder]: For 21445/21641 co-relation queries the response was YES. [2020-02-10 23:29:19,006 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:19,006 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:29:19,007 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:19,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:19,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1494279897, now seen corresponding path program 8 times [2020-02-10 23:29:19,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:19,007 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614127215] [2020-02-10 23:29:19,008 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:19,499 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 26 [2020-02-10 23:29:19,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:29:19,505 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614127215] [2020-02-10 23:29:19,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:19,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-02-10 23:29:19,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515866126] [2020-02-10 23:29:19,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-02-10 23:29:19,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:19,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-02-10 23:29:19,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-02-10 23:29:19,507 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2020-02-10 23:29:19,507 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 99 transitions. Second operand 10 states. [2020-02-10 23:29:19,507 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:19,508 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2020-02-10 23:29:19,508 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:33,490 INFO L129 PetriNetUnfolder]: 2756/9081 cut-off events. [2020-02-10 23:29:33,491 INFO L130 PetriNetUnfolder]: For 121609/123883 co-relation queries the response was YES. [2020-02-10 23:29:33,586 INFO L76 FinitePrefix]: Finished finitePrefix Result has 49793 conditions, 9081 events. 2756/9081 cut-off events. For 121609/123883 co-relation queries the response was YES. Maximal size of possible extension queue 910. Compared 112248 event pairs. 8/8936 useless extension candidates. Maximal degree in co-relation 49708. Up to 2666 conditions per place. [2020-02-10 23:29:33,747 INFO L145 encePairwiseOnDemand]: 98/107 looper letters, 135 selfloop transitions, 26 changer transitions 1/178 dead transitions. [2020-02-10 23:29:33,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-02-10 23:29:33,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-02-10 23:29:33,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2020-02-10 23:29:33,750 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2020-02-10 23:29:33,750 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2020-02-10 23:29:33,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2020-02-10 23:29:33,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:33,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2020-02-10 23:29:33,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-02-10 23:29:33,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-02-10 23:29:33,754 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-02-10 23:29:33,754 INFO L178 Difference]: Start difference. First operand has 175 places, 99 transitions. Second operand 10 states and 934 transitions. [2020-02-10 23:29:33,755 INFO L206 Difference]: Finished difference. Result has 192 places, 110 transitions [2020-02-10 23:29:33,755 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=1465, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1794, PETRI_PLACES=192, PETRI_TRANSITIONS=110} [2020-02-10 23:29:33,755 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 192 places, 110 transitions [2020-02-10 23:29:37,111 INFO L129 PetriNetUnfolder]: 0/3556 cut-off events. [2020-02-10 23:29:37,112 INFO L130 PetriNetUnfolder]: For 35340/35667 co-relation queries the response was YES. [2020-02-10 23:29:37,159 INFO L76 FinitePrefix]: Finished finitePrefix Result has 15406 conditions, 3556 events. 0/3556 cut-off events. For 35340/35667 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 55686 event pairs. 8/3208 useless extension candidates. Maximal degree in co-relation 15313. Up to 372 conditions per place. [2020-02-10 23:29:37,160 INFO L82 GeneralOperation]: Start removeDead. Operand has 192 places, 110 transitions [2020-02-10 23:29:37,247 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 110 transitions [2020-02-10 23:29:37,247 INFO L479 AbstractCegarLoop]: Abstraction has has 191 places, 110 transitions [2020-02-10 23:29:37,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-02-10 23:29:38,775 INFO L129 PetriNetUnfolder]: 0/3187 cut-off events. [2020-02-10 23:29:38,775 INFO L130 PetriNetUnfolder]: For 35196/35507 co-relation queries the response was YES. [2020-02-10 23:29:38,775 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:29:38,775 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:29:38,775 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:29:38,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:29:38,776 INFO L82 PathProgramCache]: Analyzing trace with hash -2059506315, now seen corresponding path program 9 times [2020-02-10 23:29:38,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:29:38,776 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234762770] [2020-02-10 23:29:38,776 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:29:38,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:29:39,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:29:39,317 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234762770] [2020-02-10 23:29:39,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:29:39,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-02-10 23:29:39,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806419474] [2020-02-10 23:29:39,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-02-10 23:29:39,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:29:39,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-02-10 23:29:39,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-02-10 23:29:39,320 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2020-02-10 23:29:39,320 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 110 transitions. Second operand 10 states. [2020-02-10 23:29:39,320 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:29:39,320 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2020-02-10 23:29:39,321 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:29:54,818 INFO L129 PetriNetUnfolder]: 2762/9542 cut-off events. [2020-02-10 23:29:54,819 INFO L130 PetriNetUnfolder]: For 154535/157011 co-relation queries the response was YES. [2020-02-10 23:29:54,925 INFO L76 FinitePrefix]: Finished finitePrefix Result has 55261 conditions, 9542 events. 2762/9542 cut-off events. For 154535/157011 co-relation queries the response was YES. Maximal size of possible extension queue 954. Compared 120092 event pairs. 1/9386 useless extension candidates. Maximal degree in co-relation 55167. Up to 2843 conditions per place. [2020-02-10 23:29:55,101 INFO L145 encePairwiseOnDemand]: 98/107 looper letters, 134 selfloop transitions, 33 changer transitions 1/184 dead transitions. [2020-02-10 23:29:55,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-02-10 23:29:55,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-02-10 23:29:55,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2020-02-10 23:29:55,104 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2020-02-10 23:29:55,104 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2020-02-10 23:29:55,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2020-02-10 23:29:55,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:29:55,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2020-02-10 23:29:55,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-02-10 23:29:55,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-02-10 23:29:55,110 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-02-10 23:29:55,110 INFO L178 Difference]: Start difference. First operand has 191 places, 110 transitions. Second operand 10 states and 934 transitions. [2020-02-10 23:29:55,111 INFO L206 Difference]: Finished difference. Result has 207 places, 122 transitions [2020-02-10 23:29:55,112 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=1794, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2131, PETRI_PLACES=207, PETRI_TRANSITIONS=122} [2020-02-10 23:29:55,112 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 207 places, 122 transitions [2020-02-10 23:29:59,608 INFO L129 PetriNetUnfolder]: 0/4048 cut-off events. [2020-02-10 23:29:59,608 INFO L130 PetriNetUnfolder]: For 49087/49578 co-relation queries the response was YES. [2020-02-10 23:29:59,651 INFO L76 FinitePrefix]: Finished finitePrefix Result has 18484 conditions, 4048 events. 0/4048 cut-off events. For 49087/49578 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 64963 event pairs. 12/3668 useless extension candidates. Maximal degree in co-relation 18383. Up to 420 conditions per place. [2020-02-10 23:29:59,651 INFO L82 GeneralOperation]: Start removeDead. Operand has 207 places, 122 transitions [2020-02-10 23:29:59,722 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 122 transitions [2020-02-10 23:29:59,722 INFO L479 AbstractCegarLoop]: Abstraction has has 206 places, 122 transitions [2020-02-10 23:29:59,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-02-10 23:30:01,450 INFO L129 PetriNetUnfolder]: 0/3631 cut-off events. [2020-02-10 23:30:01,450 INFO L130 PetriNetUnfolder]: For 49103/49573 co-relation queries the response was YES. [2020-02-10 23:30:01,450 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:30:01,450 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:30:01,450 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:30:01,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:30:01,451 INFO L82 PathProgramCache]: Analyzing trace with hash -2142272287, now seen corresponding path program 10 times [2020-02-10 23:30:01,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:30:01,451 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281418814] [2020-02-10 23:30:01,451 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:30:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:30:01,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:30:01,970 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281418814] [2020-02-10 23:30:01,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:30:01,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-02-10 23:30:01,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997289368] [2020-02-10 23:30:01,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-02-10 23:30:01,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:30:01,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-02-10 23:30:01,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-02-10 23:30:01,972 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2020-02-10 23:30:01,972 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 122 transitions. Second operand 10 states. [2020-02-10 23:30:01,972 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:30:01,973 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2020-02-10 23:30:01,973 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:30:19,989 INFO L129 PetriNetUnfolder]: 2762/9553 cut-off events. [2020-02-10 23:30:19,989 INFO L130 PetriNetUnfolder]: For 180710/184749 co-relation queries the response was YES. [2020-02-10 23:30:20,116 INFO L76 FinitePrefix]: Finished finitePrefix Result has 58686 conditions, 9553 events. 2762/9553 cut-off events. For 180710/184749 co-relation queries the response was YES. Maximal size of possible extension queue 981. Compared 121194 event pairs. 6/9416 useless extension candidates. Maximal degree in co-relation 58584. Up to 3195 conditions per place. [2020-02-10 23:30:20,327 INFO L145 encePairwiseOnDemand]: 98/107 looper letters, 148 selfloop transitions, 35 changer transitions 3/202 dead transitions. [2020-02-10 23:30:20,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-02-10 23:30:20,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-02-10 23:30:20,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2020-02-10 23:30:20,330 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2020-02-10 23:30:20,330 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2020-02-10 23:30:20,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2020-02-10 23:30:20,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:30:20,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2020-02-10 23:30:20,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-02-10 23:30:20,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-02-10 23:30:20,336 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-02-10 23:30:20,337 INFO L178 Difference]: Start difference. First operand has 206 places, 122 transitions. Second operand 10 states and 934 transitions. [2020-02-10 23:30:20,338 INFO L206 Difference]: Finished difference. Result has 219 places, 125 transitions [2020-02-10 23:30:20,339 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=2131, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2293, PETRI_PLACES=219, PETRI_TRANSITIONS=125} [2020-02-10 23:30:20,339 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 219 places, 125 transitions [2020-02-10 23:30:24,934 INFO L129 PetriNetUnfolder]: 0/4038 cut-off events. [2020-02-10 23:30:24,935 INFO L130 PetriNetUnfolder]: For 55317/55806 co-relation queries the response was YES. [2020-02-10 23:30:24,979 INFO L76 FinitePrefix]: Finished finitePrefix Result has 19172 conditions, 4038 events. 0/4038 cut-off events. For 55317/55806 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 64748 event pairs. 12/3649 useless extension candidates. Maximal degree in co-relation 19066. Up to 419 conditions per place. [2020-02-10 23:30:24,979 INFO L82 GeneralOperation]: Start removeDead. Operand has 219 places, 125 transitions [2020-02-10 23:30:25,052 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 218 places, 125 transitions [2020-02-10 23:30:25,052 INFO L479 AbstractCegarLoop]: Abstraction has has 218 places, 125 transitions [2020-02-10 23:30:25,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-02-10 23:30:26,831 INFO L129 PetriNetUnfolder]: 0/3622 cut-off events. [2020-02-10 23:30:26,831 INFO L130 PetriNetUnfolder]: For 55150/55526 co-relation queries the response was YES. [2020-02-10 23:30:26,831 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:30:26,831 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:30:26,832 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:30:26,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:30:26,832 INFO L82 PathProgramCache]: Analyzing trace with hash 497737725, now seen corresponding path program 11 times [2020-02-10 23:30:26,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:30:26,832 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035056495] [2020-02-10 23:30:26,832 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:30:26,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:30:27,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:30:27,325 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035056495] [2020-02-10 23:30:27,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:30:27,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-02-10 23:30:27,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454475316] [2020-02-10 23:30:27,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-02-10 23:30:27,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:30:27,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-02-10 23:30:27,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-02-10 23:30:27,327 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2020-02-10 23:30:27,328 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 125 transitions. Second operand 10 states. [2020-02-10 23:30:27,328 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:30:27,328 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2020-02-10 23:30:27,328 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:30:53,798 INFO L129 PetriNetUnfolder]: 3149/11588 cut-off events. [2020-02-10 23:30:53,798 INFO L130 PetriNetUnfolder]: For 244734/248101 co-relation queries the response was YES. [2020-02-10 23:30:53,975 INFO L76 FinitePrefix]: Finished finitePrefix Result has 73906 conditions, 11588 events. 3149/11588 cut-off events. For 244734/248101 co-relation queries the response was YES. Maximal size of possible extension queue 1236. Compared 155084 event pairs. 7/11392 useless extension candidates. Maximal degree in co-relation 73799. Up to 3528 conditions per place. [2020-02-10 23:30:54,217 INFO L145 encePairwiseOnDemand]: 98/107 looper letters, 233 selfloop transitions, 44 changer transitions 2/295 dead transitions. [2020-02-10 23:30:54,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-02-10 23:30:54,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-02-10 23:30:54,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2020-02-10 23:30:54,222 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2020-02-10 23:30:54,222 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2020-02-10 23:30:54,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2020-02-10 23:30:54,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:30:54,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2020-02-10 23:30:54,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-02-10 23:30:54,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-02-10 23:30:54,232 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-02-10 23:30:54,232 INFO L178 Difference]: Start difference. First operand has 218 places, 125 transitions. Second operand 10 states and 934 transitions. [2020-02-10 23:30:54,241 INFO L206 Difference]: Finished difference. Result has 235 places, 154 transitions [2020-02-10 23:30:54,241 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=2293, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3171, PETRI_PLACES=235, PETRI_TRANSITIONS=154} [2020-02-10 23:30:54,241 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 235 places, 154 transitions [2020-02-10 23:31:00,846 INFO L129 PetriNetUnfolder]: 0/5743 cut-off events. [2020-02-10 23:31:00,847 INFO L130 PetriNetUnfolder]: For 91907/92500 co-relation queries the response was YES. [2020-02-10 23:31:00,920 INFO L76 FinitePrefix]: Finished finitePrefix Result has 28315 conditions, 5743 events. 0/5743 cut-off events. For 91907/92500 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 97731 event pairs. 21/5265 useless extension candidates. Maximal degree in co-relation 28200. Up to 590 conditions per place. [2020-02-10 23:31:00,920 INFO L82 GeneralOperation]: Start removeDead. Operand has 235 places, 154 transitions [2020-02-10 23:31:01,033 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 234 places, 154 transitions [2020-02-10 23:31:01,033 INFO L479 AbstractCegarLoop]: Abstraction has has 234 places, 154 transitions [2020-02-10 23:31:01,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-02-10 23:31:04,362 INFO L129 PetriNetUnfolder]: 0/5156 cut-off events. [2020-02-10 23:31:04,362 INFO L130 PetriNetUnfolder]: For 92823/93724 co-relation queries the response was YES. [2020-02-10 23:31:04,362 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:31:04,362 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:31:04,362 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:31:04,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:31:04,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1975316619, now seen corresponding path program 12 times [2020-02-10 23:31:04,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:31:04,363 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439973320] [2020-02-10 23:31:04,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:31:04,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:31:04,848 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 26 [2020-02-10 23:31:04,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:31:04,852 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439973320] [2020-02-10 23:31:04,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:31:04,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-02-10 23:31:04,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769990155] [2020-02-10 23:31:04,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-02-10 23:31:04,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:31:04,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-02-10 23:31:04,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-02-10 23:31:04,854 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2020-02-10 23:31:04,854 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 154 transitions. Second operand 10 states. [2020-02-10 23:31:04,855 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:31:04,855 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2020-02-10 23:31:04,855 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:31:35,517 INFO L129 PetriNetUnfolder]: 3119/12305 cut-off events. [2020-02-10 23:31:35,517 INFO L130 PetriNetUnfolder]: For 285304/288781 co-relation queries the response was YES. [2020-02-10 23:31:35,711 INFO L76 FinitePrefix]: Finished finitePrefix Result has 79894 conditions, 12305 events. 3119/12305 cut-off events. For 285304/288781 co-relation queries the response was YES. Maximal size of possible extension queue 1305. Compared 170322 event pairs. 1/12132 useless extension candidates. Maximal degree in co-relation 79778. Up to 3141 conditions per place. [2020-02-10 23:31:35,985 INFO L145 encePairwiseOnDemand]: 98/107 looper letters, 190 selfloop transitions, 55 changer transitions 4/265 dead transitions. [2020-02-10 23:31:35,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-02-10 23:31:35,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-02-10 23:31:35,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2020-02-10 23:31:35,987 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2020-02-10 23:31:35,987 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2020-02-10 23:31:35,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2020-02-10 23:31:35,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:31:35,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2020-02-10 23:31:35,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-02-10 23:31:35,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-02-10 23:31:35,991 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-02-10 23:31:35,991 INFO L178 Difference]: Start difference. First operand has 234 places, 154 transitions. Second operand 10 states and 934 transitions. [2020-02-10 23:31:35,994 INFO L206 Difference]: Finished difference. Result has 251 places, 180 transitions [2020-02-10 23:31:35,994 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=3171, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3935, PETRI_PLACES=251, PETRI_TRANSITIONS=180} [2020-02-10 23:31:35,994 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 251 places, 180 transitions [2020-02-10 23:31:44,745 INFO L129 PetriNetUnfolder]: 0/6172 cut-off events. [2020-02-10 23:31:44,745 INFO L130 PetriNetUnfolder]: For 119070/120420 co-relation queries the response was YES. [2020-02-10 23:31:44,823 INFO L76 FinitePrefix]: Finished finitePrefix Result has 32085 conditions, 6172 events. 0/6172 cut-off events. For 119070/120420 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 106412 event pairs. 24/5674 useless extension candidates. Maximal degree in co-relation 31961. Up to 629 conditions per place. [2020-02-10 23:31:44,823 INFO L82 GeneralOperation]: Start removeDead. Operand has 251 places, 180 transitions [2020-02-10 23:31:44,944 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 250 places, 180 transitions [2020-02-10 23:31:44,944 INFO L479 AbstractCegarLoop]: Abstraction has has 250 places, 180 transitions [2020-02-10 23:31:44,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-02-10 23:31:49,089 INFO L129 PetriNetUnfolder]: 0/5546 cut-off events. [2020-02-10 23:31:49,090 INFO L130 PetriNetUnfolder]: For 118204/119319 co-relation queries the response was YES. [2020-02-10 23:31:49,090 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:31:49,090 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:31:49,090 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:31:49,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:31:49,090 INFO L82 PathProgramCache]: Analyzing trace with hash -927571953, now seen corresponding path program 13 times [2020-02-10 23:31:49,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:31:49,091 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767042735] [2020-02-10 23:31:49,091 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:31:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:31:49,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:31:49,590 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767042735] [2020-02-10 23:31:49,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:31:49,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-02-10 23:31:49,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805755902] [2020-02-10 23:31:49,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-02-10 23:31:49,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:31:49,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-02-10 23:31:49,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-02-10 23:31:49,592 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2020-02-10 23:31:49,593 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 180 transitions. Second operand 10 states. [2020-02-10 23:31:49,593 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:31:49,593 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2020-02-10 23:31:49,593 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:32:23,372 INFO L129 PetriNetUnfolder]: 3107/12312 cut-off events. [2020-02-10 23:32:23,372 INFO L130 PetriNetUnfolder]: For 345874/350243 co-relation queries the response was YES. [2020-02-10 23:32:23,587 INFO L76 FinitePrefix]: Finished finitePrefix Result has 87023 conditions, 12312 events. 3107/12312 cut-off events. For 345874/350243 co-relation queries the response was YES. Maximal size of possible extension queue 1287. Compared 170645 event pairs. 1/12130 useless extension candidates. Maximal degree in co-relation 86898. Up to 2831 conditions per place. [2020-02-10 23:32:23,884 INFO L145 encePairwiseOnDemand]: 98/107 looper letters, 194 selfloop transitions, 61 changer transitions 1/272 dead transitions. [2020-02-10 23:32:23,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-02-10 23:32:23,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-02-10 23:32:23,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2020-02-10 23:32:23,886 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2020-02-10 23:32:23,887 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2020-02-10 23:32:23,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2020-02-10 23:32:23,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:32:23,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2020-02-10 23:32:23,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-02-10 23:32:23,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-02-10 23:32:23,890 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-02-10 23:32:23,890 INFO L178 Difference]: Start difference. First operand has 250 places, 180 transitions. Second operand 10 states and 934 transitions. [2020-02-10 23:32:23,892 INFO L206 Difference]: Finished difference. Result has 264 places, 191 transitions [2020-02-10 23:32:23,893 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=3935, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4309, PETRI_PLACES=264, PETRI_TRANSITIONS=191} [2020-02-10 23:32:23,893 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 264 places, 191 transitions [2020-02-10 23:32:33,602 INFO L129 PetriNetUnfolder]: 0/6314 cut-off events. [2020-02-10 23:32:33,603 INFO L130 PetriNetUnfolder]: For 133884/135012 co-relation queries the response was YES. [2020-02-10 23:32:33,687 INFO L76 FinitePrefix]: Finished finitePrefix Result has 34033 conditions, 6314 events. 0/6314 cut-off events. For 133884/135012 co-relation queries the response was YES. Maximal size of possible extension queue 709. Compared 109316 event pairs. 23/5799 useless extension candidates. Maximal degree in co-relation 33903. Up to 641 conditions per place. [2020-02-10 23:32:33,687 INFO L82 GeneralOperation]: Start removeDead. Operand has 264 places, 191 transitions [2020-02-10 23:32:33,819 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 263 places, 191 transitions [2020-02-10 23:32:33,820 INFO L479 AbstractCegarLoop]: Abstraction has has 263 places, 191 transitions [2020-02-10 23:32:33,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-02-10 23:32:37,738 INFO L129 PetriNetUnfolder]: 0/5676 cut-off events. [2020-02-10 23:32:37,738 INFO L130 PetriNetUnfolder]: For 133938/135049 co-relation queries the response was YES. [2020-02-10 23:32:37,738 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:32:37,739 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:32:37,739 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:32:37,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:32:37,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1717023761, now seen corresponding path program 14 times [2020-02-10 23:32:37,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:32:37,739 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700843850] [2020-02-10 23:32:37,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:32:37,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:32:38,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:32:38,210 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700843850] [2020-02-10 23:32:38,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:32:38,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-02-10 23:32:38,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800196993] [2020-02-10 23:32:38,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-02-10 23:32:38,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:32:38,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-02-10 23:32:38,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-02-10 23:32:38,213 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2020-02-10 23:32:38,213 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 191 transitions. Second operand 10 states. [2020-02-10 23:32:38,213 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:32:38,213 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2020-02-10 23:32:38,214 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:33:29,398 INFO L129 PetriNetUnfolder]: 3196/14863 cut-off events. [2020-02-10 23:33:29,398 INFO L130 PetriNetUnfolder]: For 431156/435525 co-relation queries the response was YES. [2020-02-10 23:33:29,703 INFO L76 FinitePrefix]: Finished finitePrefix Result has 103156 conditions, 14863 events. 3196/14863 cut-off events. For 431156/435525 co-relation queries the response was YES. Maximal size of possible extension queue 1581. Compared 223521 event pairs. 1/14678 useless extension candidates. Maximal degree in co-relation 103025. Up to 3530 conditions per place. [2020-02-10 23:33:30,089 INFO L145 encePairwiseOnDemand]: 98/107 looper letters, 237 selfloop transitions, 62 changer transitions 2/317 dead transitions. [2020-02-10 23:33:30,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-02-10 23:33:30,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-02-10 23:33:30,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2020-02-10 23:33:30,090 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2020-02-10 23:33:30,091 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2020-02-10 23:33:30,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2020-02-10 23:33:30,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:33:30,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2020-02-10 23:33:30,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-02-10 23:33:30,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-02-10 23:33:30,094 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-02-10 23:33:30,094 INFO L178 Difference]: Start difference. First operand has 263 places, 191 transitions. Second operand 10 states and 934 transitions. [2020-02-10 23:33:30,097 INFO L206 Difference]: Finished difference. Result has 279 places, 217 transitions [2020-02-10 23:33:30,097 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=4309, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5217, PETRI_PLACES=279, PETRI_TRANSITIONS=217} [2020-02-10 23:33:30,097 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 279 places, 217 transitions [2020-02-10 23:33:45,541 INFO L129 PetriNetUnfolder]: 0/8099 cut-off events. [2020-02-10 23:33:45,542 INFO L130 PetriNetUnfolder]: For 198647/199986 co-relation queries the response was YES. [2020-02-10 23:33:45,664 INFO L76 FinitePrefix]: Finished finitePrefix Result has 45606 conditions, 8099 events. 0/8099 cut-off events. For 198647/199986 co-relation queries the response was YES. Maximal size of possible extension queue 960. Compared 146487 event pairs. 28/7454 useless extension candidates. Maximal degree in co-relation 45468. Up to 822 conditions per place. [2020-02-10 23:33:45,664 INFO L82 GeneralOperation]: Start removeDead. Operand has 279 places, 217 transitions [2020-02-10 23:33:45,850 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 278 places, 217 transitions [2020-02-10 23:33:45,851 INFO L479 AbstractCegarLoop]: Abstraction has has 278 places, 217 transitions [2020-02-10 23:33:45,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-02-10 23:33:53,210 INFO L129 PetriNetUnfolder]: 0/7280 cut-off events. [2020-02-10 23:33:53,210 INFO L130 PetriNetUnfolder]: For 199477/200963 co-relation queries the response was YES. [2020-02-10 23:33:53,210 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:33:53,210 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:33:53,210 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:33:53,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:33:53,211 INFO L82 PathProgramCache]: Analyzing trace with hash -70273577, now seen corresponding path program 15 times [2020-02-10 23:33:53,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:33:53,211 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914032621] [2020-02-10 23:33:53,211 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:33:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:33:53,690 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 28 [2020-02-10 23:33:53,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:33:53,696 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914032621] [2020-02-10 23:33:53,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:33:53,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-02-10 23:33:53,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589112521] [2020-02-10 23:33:53,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-02-10 23:33:53,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:33:53,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-02-10 23:33:53,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-02-10 23:33:53,698 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2020-02-10 23:33:53,699 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 217 transitions. Second operand 10 states. [2020-02-10 23:33:53,699 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:33:53,699 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2020-02-10 23:33:53,699 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:34:50,694 INFO L129 PetriNetUnfolder]: 3196/14832 cut-off events. [2020-02-10 23:34:50,695 INFO L130 PetriNetUnfolder]: For 489414/493783 co-relation queries the response was YES. [2020-02-10 23:34:51,016 INFO L76 FinitePrefix]: Finished finitePrefix Result has 108910 conditions, 14832 events. 3196/14832 cut-off events. For 489414/493783 co-relation queries the response was YES. Maximal size of possible extension queue 1580. Compared 222781 event pairs. 1/14652 useless extension candidates. Maximal degree in co-relation 108771. Up to 3530 conditions per place. [2020-02-10 23:34:51,420 INFO L145 encePairwiseOnDemand]: 98/107 looper letters, 243 selfloop transitions, 61 changer transitions 1/321 dead transitions. [2020-02-10 23:34:51,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-02-10 23:34:51,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-02-10 23:34:51,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2020-02-10 23:34:51,421 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2020-02-10 23:34:51,422 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2020-02-10 23:34:51,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2020-02-10 23:34:51,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:34:51,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2020-02-10 23:34:51,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-02-10 23:34:51,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-02-10 23:34:51,425 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-02-10 23:34:51,425 INFO L178 Difference]: Start difference. First operand has 278 places, 217 transitions. Second operand 10 states and 934 transitions. [2020-02-10 23:34:51,428 INFO L206 Difference]: Finished difference. Result has 290 places, 224 transitions [2020-02-10 23:34:51,429 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=5217, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5507, PETRI_PLACES=290, PETRI_TRANSITIONS=224} [2020-02-10 23:34:51,429 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 290 places, 224 transitions [2020-02-10 23:35:08,128 INFO L129 PetriNetUnfolder]: 0/8090 cut-off events. [2020-02-10 23:35:08,128 INFO L130 PetriNetUnfolder]: For 217282/218768 co-relation queries the response was YES. [2020-02-10 23:35:08,249 INFO L76 FinitePrefix]: Finished finitePrefix Result has 47026 conditions, 8090 events. 0/8090 cut-off events. For 217282/218768 co-relation queries the response was YES. Maximal size of possible extension queue 954. Compared 146306 event pairs. 42/7468 useless extension candidates. Maximal degree in co-relation 46884. Up to 821 conditions per place. [2020-02-10 23:35:08,249 INFO L82 GeneralOperation]: Start removeDead. Operand has 290 places, 224 transitions [2020-02-10 23:35:08,437 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 289 places, 224 transitions [2020-02-10 23:35:08,437 INFO L479 AbstractCegarLoop]: Abstraction has has 289 places, 224 transitions [2020-02-10 23:35:08,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-02-10 23:35:15,503 INFO L129 PetriNetUnfolder]: 0/7272 cut-off events. [2020-02-10 23:35:15,504 INFO L130 PetriNetUnfolder]: For 217255/218736 co-relation queries the response was YES. [2020-02-10 23:35:15,504 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:35:15,504 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:35:15,504 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:35:15,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:35:15,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1822942065, now seen corresponding path program 16 times [2020-02-10 23:35:15,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:35:15,505 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319329153] [2020-02-10 23:35:15,505 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:35:15,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:35:15,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:35:15,953 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319329153] [2020-02-10 23:35:15,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:35:15,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-02-10 23:35:15,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461856406] [2020-02-10 23:35:15,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-02-10 23:35:15,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:35:15,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-02-10 23:35:15,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-02-10 23:35:15,955 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2020-02-10 23:35:15,962 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 224 transitions. Second operand 10 states. [2020-02-10 23:35:15,962 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:35:15,962 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2020-02-10 23:35:15,962 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:36:15,739 INFO L129 PetriNetUnfolder]: 3196/14834 cut-off events. [2020-02-10 23:36:15,739 INFO L130 PetriNetUnfolder]: For 520598/524967 co-relation queries the response was YES. [2020-02-10 23:36:16,076 INFO L76 FinitePrefix]: Finished finitePrefix Result has 111490 conditions, 14834 events. 3196/14834 cut-off events. For 520598/524967 co-relation queries the response was YES. Maximal size of possible extension queue 1580. Compared 222870 event pairs. 1/14647 useless extension candidates. Maximal degree in co-relation 111347. Up to 3530 conditions per place. [2020-02-10 23:36:16,500 INFO L145 encePairwiseOnDemand]: 98/107 looper letters, 236 selfloop transitions, 61 changer transitions 1/314 dead transitions. [2020-02-10 23:36:16,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-02-10 23:36:16,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-02-10 23:36:16,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2020-02-10 23:36:16,616 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2020-02-10 23:36:16,616 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2020-02-10 23:36:16,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2020-02-10 23:36:16,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:36:16,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2020-02-10 23:36:16,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-02-10 23:36:16,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-02-10 23:36:16,619 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-02-10 23:36:16,619 INFO L178 Difference]: Start difference. First operand has 289 places, 224 transitions. Second operand 10 states and 934 transitions. [2020-02-10 23:36:16,622 INFO L206 Difference]: Finished difference. Result has 300 places, 226 transitions [2020-02-10 23:36:16,623 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=5507, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5747, PETRI_PLACES=300, PETRI_TRANSITIONS=226} [2020-02-10 23:36:16,623 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 300 places, 226 transitions [2020-02-10 23:36:33,783 INFO L129 PetriNetUnfolder]: 0/8080 cut-off events. [2020-02-10 23:36:33,783 INFO L130 PetriNetUnfolder]: For 236699/238172 co-relation queries the response was YES. [2020-02-10 23:36:33,905 INFO L76 FinitePrefix]: Finished finitePrefix Result has 48422 conditions, 8080 events. 0/8080 cut-off events. For 236699/238172 co-relation queries the response was YES. Maximal size of possible extension queue 957. Compared 146008 event pairs. 42/7459 useless extension candidates. Maximal degree in co-relation 48277. Up to 820 conditions per place. [2020-02-10 23:36:33,905 INFO L82 GeneralOperation]: Start removeDead. Operand has 300 places, 226 transitions [2020-02-10 23:36:34,092 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 299 places, 226 transitions [2020-02-10 23:36:34,093 INFO L479 AbstractCegarLoop]: Abstraction has has 299 places, 226 transitions [2020-02-10 23:36:34,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-02-10 23:36:40,499 INFO L129 PetriNetUnfolder]: 0/7263 cut-off events. [2020-02-10 23:36:40,499 INFO L130 PetriNetUnfolder]: For 237005/238506 co-relation queries the response was YES. [2020-02-10 23:36:40,499 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:36:40,499 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:36:40,500 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:36:40,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:36:40,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1261254667, now seen corresponding path program 17 times [2020-02-10 23:36:40,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:36:40,500 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249209842] [2020-02-10 23:36:40,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:36:40,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:36:40,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:36:40,961 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249209842] [2020-02-10 23:36:40,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:36:40,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-02-10 23:36:40,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36319786] [2020-02-10 23:36:40,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-02-10 23:36:40,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:36:40,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-02-10 23:36:40,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-02-10 23:36:40,963 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2020-02-10 23:36:40,964 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 226 transitions. Second operand 10 states. [2020-02-10 23:36:40,964 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:36:40,964 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2020-02-10 23:36:40,964 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:37:47,037 INFO L129 PetriNetUnfolder]: 3155/15390 cut-off events. [2020-02-10 23:37:47,037 INFO L130 PetriNetUnfolder]: For 565681/570050 co-relation queries the response was YES. [2020-02-10 23:37:47,406 INFO L76 FinitePrefix]: Finished finitePrefix Result has 116560 conditions, 15390 events. 3155/15390 cut-off events. For 565681/570050 co-relation queries the response was YES. Maximal size of possible extension queue 1618. Compared 235466 event pairs. 1/15203 useless extension candidates. Maximal degree in co-relation 116414. Up to 3530 conditions per place. [2020-02-10 23:37:47,851 INFO L145 encePairwiseOnDemand]: 98/107 looper letters, 247 selfloop transitions, 69 changer transitions 0/332 dead transitions. [2020-02-10 23:37:47,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-02-10 23:37:47,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-02-10 23:37:47,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2020-02-10 23:37:47,852 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2020-02-10 23:37:47,853 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2020-02-10 23:37:47,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2020-02-10 23:37:47,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:37:47,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2020-02-10 23:37:47,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-02-10 23:37:47,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-02-10 23:37:47,855 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-02-10 23:37:47,856 INFO L178 Difference]: Start difference. First operand has 299 places, 226 transitions. Second operand 10 states and 934 transitions. [2020-02-10 23:37:47,859 INFO L206 Difference]: Finished difference. Result has 313 places, 239 transitions [2020-02-10 23:37:47,859 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=5747, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6411, PETRI_PLACES=313, PETRI_TRANSITIONS=239} [2020-02-10 23:37:47,860 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 313 places, 239 transitions [2020-02-10 23:38:07,576 INFO L129 PetriNetUnfolder]: 0/8644 cut-off events. [2020-02-10 23:38:07,576 INFO L130 PetriNetUnfolder]: For 275936/277464 co-relation queries the response was YES. [2020-02-10 23:38:07,713 INFO L76 FinitePrefix]: Finished finitePrefix Result has 53431 conditions, 8644 events. 0/8644 cut-off events. For 275936/277464 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 157663 event pairs. 42/7979 useless extension candidates. Maximal degree in co-relation 53280. Up to 871 conditions per place. [2020-02-10 23:38:07,713 INFO L82 GeneralOperation]: Start removeDead. Operand has 313 places, 239 transitions [2020-02-10 23:38:07,918 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 313 places, 239 transitions [2020-02-10 23:38:07,919 INFO L479 AbstractCegarLoop]: Abstraction has has 313 places, 239 transitions [2020-02-10 23:38:07,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-02-10 23:38:15,137 INFO L129 PetriNetUnfolder]: 0/7777 cut-off events. [2020-02-10 23:38:15,138 INFO L130 PetriNetUnfolder]: For 275755/277264 co-relation queries the response was YES. [2020-02-10 23:38:15,138 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:38:15,138 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:38:15,138 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:38:15,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:38:15,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1184778579, now seen corresponding path program 18 times [2020-02-10 23:38:15,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:38:15,138 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823398397] [2020-02-10 23:38:15,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:38:15,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:38:15,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:38:15,570 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823398397] [2020-02-10 23:38:15,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:38:15,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-02-10 23:38:15,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997813921] [2020-02-10 23:38:15,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-02-10 23:38:15,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:38:15,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-02-10 23:38:15,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-02-10 23:38:15,572 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2020-02-10 23:38:15,572 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 239 transitions. Second operand 10 states. [2020-02-10 23:38:15,573 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:38:15,573 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2020-02-10 23:38:15,573 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:39:25,240 INFO L129 PetriNetUnfolder]: 3150/15454 cut-off events. [2020-02-10 23:39:25,240 INFO L130 PetriNetUnfolder]: For 616559/620928 co-relation queries the response was YES. [2020-02-10 23:39:25,635 INFO L76 FinitePrefix]: Finished finitePrefix Result has 121212 conditions, 15454 events. 3150/15454 cut-off events. For 616559/620928 co-relation queries the response was YES. Maximal size of possible extension queue 1634. Compared 236963 event pairs. 1/15262 useless extension candidates. Maximal degree in co-relation 121060. Up to 3530 conditions per place. [2020-02-10 23:39:26,101 INFO L145 encePairwiseOnDemand]: 98/107 looper letters, 251 selfloop transitions, 67 changer transitions 1/335 dead transitions. [2020-02-10 23:39:26,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-02-10 23:39:26,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-02-10 23:39:26,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2020-02-10 23:39:26,106 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2020-02-10 23:39:26,107 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2020-02-10 23:39:26,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2020-02-10 23:39:26,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:39:26,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2020-02-10 23:39:26,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-02-10 23:39:26,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-02-10 23:39:26,109 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-02-10 23:39:26,110 INFO L178 Difference]: Start difference. First operand has 313 places, 239 transitions. Second operand 10 states and 934 transitions. [2020-02-10 23:39:26,117 INFO L206 Difference]: Finished difference. Result has 327 places, 247 transitions [2020-02-10 23:39:26,117 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=6411, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6857, PETRI_PLACES=327, PETRI_TRANSITIONS=247} [2020-02-10 23:39:26,118 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 327 places, 247 transitions [2020-02-10 23:39:48,376 INFO L129 PetriNetUnfolder]: 0/8776 cut-off events. [2020-02-10 23:39:48,376 INFO L130 PetriNetUnfolder]: For 307142/308656 co-relation queries the response was YES. [2020-02-10 23:39:48,531 INFO L76 FinitePrefix]: Finished finitePrefix Result has 56030 conditions, 8776 events. 0/8776 cut-off events. For 307142/308656 co-relation queries the response was YES. Maximal size of possible extension queue 1037. Compared 160423 event pairs. 46/8117 useless extension candidates. Maximal degree in co-relation 55873. Up to 883 conditions per place. [2020-02-10 23:39:48,531 INFO L82 GeneralOperation]: Start removeDead. Operand has 327 places, 247 transitions [2020-02-10 23:39:48,753 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 326 places, 247 transitions [2020-02-10 23:39:48,753 INFO L479 AbstractCegarLoop]: Abstraction has has 326 places, 247 transitions [2020-02-10 23:39:48,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-02-10 23:39:56,310 INFO L129 PetriNetUnfolder]: 0/7897 cut-off events. [2020-02-10 23:39:56,311 INFO L130 PetriNetUnfolder]: For 306463/307945 co-relation queries the response was YES. [2020-02-10 23:39:56,311 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:39:56,311 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:39:56,311 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:39:56,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:39:56,311 INFO L82 PathProgramCache]: Analyzing trace with hash 424392023, now seen corresponding path program 19 times [2020-02-10 23:39:56,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:39:56,311 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775450076] [2020-02-10 23:39:56,312 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:39:56,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:39:56,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:39:56,741 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775450076] [2020-02-10 23:39:56,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:39:56,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-02-10 23:39:56,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665407789] [2020-02-10 23:39:56,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-02-10 23:39:56,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:39:56,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-02-10 23:39:56,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-02-10 23:39:56,743 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2020-02-10 23:39:56,744 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 247 transitions. Second operand 10 states. [2020-02-10 23:39:56,744 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:39:56,744 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2020-02-10 23:39:56,744 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-02-10 23:41:09,824 INFO L129 PetriNetUnfolder]: 3150/14877 cut-off events. [2020-02-10 23:41:09,824 INFO L130 PetriNetUnfolder]: For 670843/674500 co-relation queries the response was YES. [2020-02-10 23:41:10,226 INFO L76 FinitePrefix]: Finished finitePrefix Result has 122970 conditions, 14877 events. 3150/14877 cut-off events. For 670843/674500 co-relation queries the response was YES. Maximal size of possible extension queue 1608. Compared 224979 event pairs. 3/14665 useless extension candidates. Maximal degree in co-relation 122812. Up to 4180 conditions per place. [2020-02-10 23:41:10,702 INFO L145 encePairwiseOnDemand]: 98/107 looper letters, 328 selfloop transitions, 67 changer transitions 3/414 dead transitions. [2020-02-10 23:41:10,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-02-10 23:41:10,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-02-10 23:41:10,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 934 transitions. [2020-02-10 23:41:10,703 INFO L464 CegarLoopForPetriNet]: DFA transition density 0.8728971962616823 [2020-02-10 23:41:10,703 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 934 transitions. [2020-02-10 23:41:10,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 934 transitions. [2020-02-10 23:41:10,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-02-10 23:41:10,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 934 transitions. [2020-02-10 23:41:10,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-02-10 23:41:10,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-02-10 23:41:10,706 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-02-10 23:41:10,707 INFO L178 Difference]: Start difference. First operand has 326 places, 247 transitions. Second operand 10 states and 934 transitions. [2020-02-10 23:41:10,709 INFO L206 Difference]: Finished difference. Result has 342 places, 256 transitions [2020-02-10 23:41:10,709 INFO L292 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=6857, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7365, PETRI_PLACES=342, PETRI_TRANSITIONS=256} [2020-02-10 23:41:10,710 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 342 places, 256 transitions [2020-02-10 23:41:32,480 INFO L129 PetriNetUnfolder]: 0/8769 cut-off events. [2020-02-10 23:41:32,481 INFO L130 PetriNetUnfolder]: For 337813/339486 co-relation queries the response was YES. [2020-02-10 23:41:32,636 INFO L76 FinitePrefix]: Finished finitePrefix Result has 57738 conditions, 8769 events. 0/8769 cut-off events. For 337813/339486 co-relation queries the response was YES. Maximal size of possible extension queue 1035. Compared 160437 event pairs. 41/8100 useless extension candidates. Maximal degree in co-relation 57573. Up to 882 conditions per place. [2020-02-10 23:41:32,636 INFO L82 GeneralOperation]: Start removeDead. Operand has 342 places, 256 transitions [2020-02-10 23:41:32,865 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 341 places, 256 transitions [2020-02-10 23:41:32,865 INFO L479 AbstractCegarLoop]: Abstraction has has 341 places, 256 transitions [2020-02-10 23:41:32,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-02-10 23:41:40,288 INFO L129 PetriNetUnfolder]: 0/7891 cut-off events. [2020-02-10 23:41:40,289 INFO L130 PetriNetUnfolder]: For 336287/337809 co-relation queries the response was YES. [2020-02-10 23:41:40,289 INFO L219 CegarLoopForPetriNet]: Found error trace [2020-02-10 23:41:40,289 INFO L227 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-02-10 23:41:40,289 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2020-02-10 23:41:40,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-02-10 23:41:40,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1852027069, now seen corresponding path program 20 times [2020-02-10 23:41:40,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-02-10 23:41:40,290 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371324484] [2020-02-10 23:41:40,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-02-10 23:41:40,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-02-10 23:41:40,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-02-10 23:41:40,717 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371324484] [2020-02-10 23:41:40,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-02-10 23:41:40,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-02-10 23:41:40,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722724318] [2020-02-10 23:41:40,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-02-10 23:41:40,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-02-10 23:41:40,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-02-10 23:41:40,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-02-10 23:41:40,719 INFO L413 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 107 [2020-02-10 23:41:40,719 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 256 transitions. Second operand 10 states. [2020-02-10 23:41:40,719 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-02-10 23:41:40,719 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 107 [2020-02-10 23:41:40,719 INFO L68 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2020-02-10 23:42:40,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-02-10 23:42:40,061 WARN L544 AbstractCegarLoop]: Verification canceled [2020-02-10 23:42:40,064 WARN L227 ceAbstractionStarter]: Timeout [2020-02-10 23:42:40,064 INFO L202 PluginConnector]: Adding new model example_8.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 11:42:40 BasicIcfg [2020-02-10 23:42:40,064 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-02-10 23:42:40,065 INFO L168 Benchmark]: Toolchain (without parser) took 834860.54 ms. Allocated memory was 146.3 MB in the beginning and 3.3 GB in the end (delta: 3.1 GB). Free memory was 121.4 MB in the beginning and 1.0 GB in the end (delta: -908.2 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2020-02-10 23:42:40,066 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.49 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-02-10 23:42:40,066 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.41 ms. Allocated memory is still 146.3 MB. Free memory was 121.1 MB in the beginning and 119.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2020-02-10 23:42:40,066 INFO L168 Benchmark]: Boogie Preprocessor took 19.68 ms. Allocated memory is still 146.3 MB. Free memory was 119.4 MB in the beginning and 118.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 7.1 GB. [2020-02-10 23:42:40,067 INFO L168 Benchmark]: RCFGBuilder took 388.68 ms. Allocated memory is still 146.3 MB. Free memory was 118.1 MB in the beginning and 104.8 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-02-10 23:42:40,067 INFO L168 Benchmark]: TraceAbstraction took 834410.82 ms. Allocated memory was 146.3 MB in the beginning and 3.3 GB in the end (delta: 3.1 GB). Free memory was 104.4 MB in the beginning and 1.0 GB in the end (delta: -925.1 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2020-02-10 23:42:40,070 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 0.49 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 35.41 ms. Allocated memory is still 146.3 MB. Free memory was 121.1 MB in the beginning and 119.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 19.68 ms. Allocated memory is still 146.3 MB. Free memory was 119.4 MB in the beginning and 118.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 388.68 ms. Allocated memory is still 146.3 MB. Free memory was 118.1 MB in the beginning and 104.8 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 834410.82 ms. Allocated memory was 146.3 MB in the beginning and 3.3 GB in the end (delta: 3.1 GB). Free memory was 104.4 MB in the beginning and 1.0 GB in the end (delta: -925.1 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.7s, 58 ProgramPointsBefore, 50 ProgramPointsAfterwards, 89 TransitionsBefore, 81 TransitionsAfterwards, 1904 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 8 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 504 VarBasedMoverChecksPositive, 0 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 532 CheckedPairsTotal, 8 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 29]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 29). Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (10states, 89/107 universal loopers) in iteration 27,while PetriNetUnfolder was constructing finite prefix that currently has 119552 conditions, 15835 events (3114/15834 cut-off events. For 757596/763312 co-relation queries the response was YES. Maximal size of possible extension queue 1760. Compared 251316 event pairs. 2/16348 useless extension candidates. Maximal degree in co-relation 119386. Up to 3320 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. Result: TIMEOUT, OverallTime: 834.1s, OverallIterations: 27, TraceHistogramMax: 1, AutomataDifference: 603.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.1s, HoareTripleCheckerStatistics: 722 SDtfs, 729 SDslu, 624 SDs, 0 SdLazy, 1350 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 221 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 10.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=256occurred in iteration=26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 157.0s AutomataMinimizationTime, 26 MinimizatonAttempts, 17 StatesRemovedByMinimization, 26 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 10.2s InterpolantComputationTime, 675 NumberOfCodeBlocks, 675 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 648 ConstructedInterpolants, 0 QuantifiedInterpolants, 302232 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 27 InterpolantComputations, 27 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown