/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_10.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 23:57:55,716 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 23:57:55,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 23:57:55,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 23:57:55,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 23:57:55,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 23:57:55,763 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 23:57:55,767 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 23:57:55,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 23:57:55,773 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 23:57:55,774 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 23:57:55,775 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 23:57:55,775 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 23:57:55,777 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 23:57:55,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 23:57:55,779 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 23:57:55,781 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 23:57:55,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 23:57:55,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 23:57:55,790 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 23:57:55,791 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 23:57:55,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 23:57:55,793 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 23:57:55,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 23:57:55,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-10 23:57:55,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 23:57:55,803 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 23:57:55,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 23:57:55,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 23:57:55,805 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 23:57:55,805 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 23:57:55,806 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 23:57:55,806 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 23:57:55,806 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 23:57:55,807 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 23:57:55,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 23:57:55,810 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-06-10 23:57:55,845 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 23:57:55,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 23:57:55,848 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 23:57:55,848 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 23:57:55,848 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 23:57:55,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 23:57:55,848 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 23:57:55,848 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 23:57:55,849 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 23:57:55,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 23:57:55,849 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 23:57:55,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 23:57:55,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 23:57:55,850 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 23:57:55,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 23:57:55,850 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 23:57:55,850 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 23:57:55,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 23:57:55,850 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 23:57:55,851 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 23:57:55,851 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 23:57:55,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 23:57:55,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 23:57:55,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 23:57:55,851 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 23:57:55,852 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 23:57:55,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 23:57:55,852 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 23:57:55,852 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 23:57:56,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 23:57:56,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 23:57:56,168 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 23:57:56,169 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-10 23:57:56,170 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-10 23:57:56,171 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_10.bpl [2021-06-10 23:57:56,183 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_10.bpl' [2021-06-10 23:57:56,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 23:57:56,222 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-10 23:57:56,223 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 23:57:56,223 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 23:57:56,223 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 23:57:56,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:57:56" (1/1) ... [2021-06-10 23:57:56,240 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:57:56" (1/1) ... [2021-06-10 23:57:56,246 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 23:57:56,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 23:57:56,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 23:57:56,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 23:57:56,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:57:56" (1/1) ... [2021-06-10 23:57:56,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:57:56" (1/1) ... [2021-06-10 23:57:56,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:57:56" (1/1) ... [2021-06-10 23:57:56,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:57:56" (1/1) ... [2021-06-10 23:57:56,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:57:56" (1/1) ... [2021-06-10 23:57:56,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:57:56" (1/1) ... [2021-06-10 23:57:56,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:57:56" (1/1) ... [2021-06-10 23:57:56,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 23:57:56,265 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 23:57:56,265 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 23:57:56,266 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 23:57:56,267 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:57:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 23:57:56,336 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-06-10 23:57:56,336 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-06-10 23:57:56,336 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-06-10 23:57:56,338 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-06-10 23:57:56,338 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-06-10 23:57:56,338 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-06-10 23:57:56,339 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-06-10 23:57:56,339 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-06-10 23:57:56,339 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-06-10 23:57:56,339 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-06-10 23:57:56,339 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-06-10 23:57:56,339 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-06-10 23:57:56,339 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-06-10 23:57:56,340 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-06-10 23:57:56,340 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-06-10 23:57:56,340 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_9 given in one single declaration [2021-06-10 23:57:56,340 INFO L130 BoogieDeclarations]: Found specification of procedure set_9 [2021-06-10 23:57:56,340 INFO L138 BoogieDeclarations]: Found implementation of procedure set_9 [2021-06-10 23:57:56,340 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-10 23:57:56,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 23:57:56,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 23:57:56,341 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-06-10 23:57:56,341 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-06-10 23:57:56,341 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-06-10 23:57:56,342 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-06-10 23:57:56,342 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-06-10 23:57:56,343 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-06-10 23:57:56,343 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2021-06-10 23:57:56,344 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2021-06-10 23:57:56,344 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2021-06-10 23:57:56,344 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2021-06-10 23:57:56,345 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2021-06-10 23:57:56,345 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2021-06-10 23:57:56,346 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 23:57:56,486 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 23:57:56,486 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-10 23:57:56,487 INFO L202 PluginConnector]: Adding new model example_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 11:57:56 BoogieIcfgContainer [2021-06-10 23:57:56,488 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 23:57:56,489 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 23:57:56,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 23:57:56,491 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 23:57:56,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 11:57:56" (1/2) ... [2021-06-10 23:57:56,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a992cc8 and model type example_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 11:57:56, skipping insertion in model container [2021-06-10 23:57:56,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 11:57:56" (2/2) ... [2021-06-10 23:57:56,494 INFO L111 eAbstractionObserver]: Analyzing ICFG example_10.bpl [2021-06-10 23:57:56,498 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 23:57:56,502 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 23:57:56,502 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 23:57:56,715 INFO L149 ThreadInstanceAdder]: Constructed 100 joinOtherThreadTransitions. [2021-06-10 23:57:56,731 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-06-10 23:57:56,749 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 23:57:56,749 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 23:57:56,749 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 23:57:56,749 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 23:57:56,750 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 23:57:56,750 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 23:57:56,750 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 23:57:56,750 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 23:57:56,761 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 143 transitions, 636 flow [2021-06-10 23:57:57,405 INFO L129 PetriNetUnfolder]: 4097/5153 cut-off events. [2021-06-10 23:57:57,405 INFO L130 PetriNetUnfolder]: For 5120/5120 co-relation queries the response was YES. [2021-06-10 23:57:57,435 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10304 conditions, 5153 events. 4097/5153 cut-off events. For 5120/5120 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 20936 event pairs, 0 based on Foata normal form. 0/5152 useless extension candidates. Maximal degree in co-relation 4655. Up to 1260 conditions per place. [2021-06-10 23:57:57,436 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 143 transitions, 636 flow [2021-06-10 23:57:57,506 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 131 transitions, 592 flow [2021-06-10 23:57:57,508 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-10 23:57:57,522 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 131 transitions, 592 flow [2021-06-10 23:57:57,528 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 131 transitions, 592 flow [2021-06-10 23:57:57,531 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 131 transitions, 592 flow [2021-06-10 23:57:57,928 INFO L129 PetriNetUnfolder]: 4097/5151 cut-off events. [2021-06-10 23:57:57,928 INFO L130 PetriNetUnfolder]: For 5120/5120 co-relation queries the response was YES. [2021-06-10 23:57:57,948 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10302 conditions, 5151 events. 4097/5151 cut-off events. For 5120/5120 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 20104 event pairs, 0 based on Foata normal form. 0/5151 useless extension candidates. Maximal degree in co-relation 4655. Up to 1260 conditions per place. [2021-06-10 23:57:58,027 INFO L151 LiptonReduction]: Number of co-enabled transitions 3780 [2021-06-10 23:57:58,218 INFO L163 LiptonReduction]: Checked pairs total: 1035 [2021-06-10 23:57:58,219 INFO L165 LiptonReduction]: Total number of compositions: 10 [2021-06-10 23:57:58,223 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 717 [2021-06-10 23:57:58,548 INFO L129 PetriNetUnfolder]: 4097/5140 cut-off events. [2021-06-10 23:57:58,548 INFO L130 PetriNetUnfolder]: For 5120/5120 co-relation queries the response was YES. [2021-06-10 23:57:58,548 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:57:58,549 INFO L263 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, 1, 1, 1, 1, 1, 1] [2021-06-10 23:57:58,549 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_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]=== [2021-06-10 23:57:58,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:57:58,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1999905854, now seen corresponding path program 1 times [2021-06-10 23:57:58,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:57:58,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191783842] [2021-06-10 23:57:58,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:57:58,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:57:58,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:58,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:57:58,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:58,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 23:57:58,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:58,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:57:58,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:57:58,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191783842] [2021-06-10 23:57:58,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:57:58,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 23:57:58,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662614973] [2021-06-10 23:57:58,714 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 23:57:58,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:57:58,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 23:57:58,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 23:57:58,727 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 153 [2021-06-10 23:57:58,729 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 121 transitions, 572 flow. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:58,730 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:57:58,730 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 153 [2021-06-10 23:57:58,731 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 23:57:59,081 INFO L129 PetriNetUnfolder]: 3764/4762 cut-off events. [2021-06-10 23:57:59,081 INFO L130 PetriNetUnfolder]: For 5812/5812 co-relation queries the response was YES. [2021-06-10 23:57:59,096 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10002 conditions, 4762 events. 3764/4762 cut-off events. For 5812/5812 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 21506 event pairs, 0 based on Foata normal form. 46/4808 useless extension candidates. Maximal degree in co-relation 4719. Up to 1260 conditions per place. [2021-06-10 23:57:59,125 INFO L132 encePairwiseOnDemand]: 149/153 looper letters, 7 selfloop transitions, 1 changer transitions 0/118 dead transitions. [2021-06-10 23:57:59,125 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 118 transitions, 573 flow [2021-06-10 23:57:59,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 23:57:59,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 23:57:59,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 437 transitions. [2021-06-10 23:57:59,136 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9520697167755992 [2021-06-10 23:57:59,137 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 437 transitions. [2021-06-10 23:57:59,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 437 transitions. [2021-06-10 23:57:59,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 23:57:59,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 437 transitions. [2021-06-10 23:57:59,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:59,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:59,150 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:59,152 INFO L185 Difference]: Start difference. First operand has 62 places, 121 transitions, 572 flow. Second operand 3 states and 437 transitions. [2021-06-10 23:57:59,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 118 transitions, 573 flow [2021-06-10 23:57:59,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 118 transitions, 359 flow, removed 0 selfloop flow, removed 20 redundant places. [2021-06-10 23:57:59,199 INFO L241 Difference]: Finished difference. Result has 44 places, 118 transitions, 345 flow [2021-06-10 23:57:59,201 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=345, PETRI_PLACES=44, PETRI_TRANSITIONS=118} [2021-06-10 23:57:59,202 INFO L343 CegarLoopForPetriNet]: 62 programPoint places, -18 predicate places. [2021-06-10 23:57:59,202 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 118 transitions, 345 flow [2021-06-10 23:57:59,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:59,203 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:57:59,203 INFO L263 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, 1, 1, 1, 1, 1, 1] [2021-06-10 23:57:59,203 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 23:57:59,203 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_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]=== [2021-06-10 23:57:59,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:57:59,204 INFO L82 PathProgramCache]: Analyzing trace with hash 229487364, now seen corresponding path program 1 times [2021-06-10 23:57:59,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:57:59,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110460407] [2021-06-10 23:57:59,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:57:59,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:57:59,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:59,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:57:59,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:59,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 23:57:59,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:59,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:57:59,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:57:59,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110460407] [2021-06-10 23:57:59,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:57:59,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 23:57:59,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902088060] [2021-06-10 23:57:59,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 23:57:59,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:57:59,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 23:57:59,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 23:57:59,236 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 153 [2021-06-10 23:57:59,236 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 118 transitions, 345 flow. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:59,236 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:57:59,236 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 153 [2021-06-10 23:57:59,237 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 23:57:59,458 INFO L129 PetriNetUnfolder]: 3028/3905 cut-off events. [2021-06-10 23:57:59,458 INFO L130 PetriNetUnfolder]: For 475/475 co-relation queries the response was YES. [2021-06-10 23:57:59,465 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4302 conditions, 3905 events. 3028/3905 cut-off events. For 475/475 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 18284 event pairs, 0 based on Foata normal form. 93/3998 useless extension candidates. Maximal degree in co-relation 4290. Up to 1260 conditions per place. [2021-06-10 23:57:59,484 INFO L132 encePairwiseOnDemand]: 148/153 looper letters, 6 selfloop transitions, 1 changer transitions 0/114 dead transitions. [2021-06-10 23:57:59,485 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 114 transitions, 347 flow [2021-06-10 23:57:59,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 23:57:59,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 23:57:59,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 437 transitions. [2021-06-10 23:57:59,489 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9520697167755992 [2021-06-10 23:57:59,489 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 437 transitions. [2021-06-10 23:57:59,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 437 transitions. [2021-06-10 23:57:59,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 23:57:59,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 437 transitions. [2021-06-10 23:57:59,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:59,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:59,493 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:59,493 INFO L185 Difference]: Start difference. First operand has 44 places, 118 transitions, 345 flow. Second operand 3 states and 437 transitions. [2021-06-10 23:57:59,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 114 transitions, 347 flow [2021-06-10 23:57:59,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 114 transitions, 346 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 23:57:59,498 INFO L241 Difference]: Finished difference. Result has 45 places, 114 transitions, 334 flow [2021-06-10 23:57:59,498 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=334, PETRI_PLACES=45, PETRI_TRANSITIONS=114} [2021-06-10 23:57:59,499 INFO L343 CegarLoopForPetriNet]: 62 programPoint places, -17 predicate places. [2021-06-10 23:57:59,499 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 114 transitions, 334 flow [2021-06-10 23:57:59,499 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:59,499 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:57:59,499 INFO L263 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, 1, 1, 1, 1, 1, 1] [2021-06-10 23:57:59,500 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 23:57:59,500 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_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]=== [2021-06-10 23:57:59,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:57:59,501 INFO L82 PathProgramCache]: Analyzing trace with hash -39454286, now seen corresponding path program 1 times [2021-06-10 23:57:59,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:57:59,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864700388] [2021-06-10 23:57:59,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:57:59,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:57:59,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:59,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:57:59,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:59,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 23:57:59,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:59,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:57:59,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:57:59,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864700388] [2021-06-10 23:57:59,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:57:59,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 23:57:59,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879481411] [2021-06-10 23:57:59,551 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 23:57:59,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:57:59,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 23:57:59,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 23:57:59,554 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 153 [2021-06-10 23:57:59,555 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 114 transitions, 334 flow. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:59,555 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:57:59,555 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 153 [2021-06-10 23:57:59,555 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 23:57:59,650 INFO L129 PetriNetUnfolder]: 1208/1664 cut-off events. [2021-06-10 23:57:59,650 INFO L130 PetriNetUnfolder]: For 390/390 co-relation queries the response was YES. [2021-06-10 23:57:59,653 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1726 conditions, 1664 events. 1208/1664 cut-off events. For 390/390 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7599 event pairs, 0 based on Foata normal form. 344/2008 useless extension candidates. Maximal degree in co-relation 1714. Up to 504 conditions per place. [2021-06-10 23:57:59,660 INFO L132 encePairwiseOnDemand]: 145/153 looper letters, 3 selfloop transitions, 1 changer transitions 0/107 dead transitions. [2021-06-10 23:57:59,661 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 107 transitions, 321 flow [2021-06-10 23:57:59,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 23:57:59,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 23:57:59,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 437 transitions. [2021-06-10 23:57:59,662 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9520697167755992 [2021-06-10 23:57:59,662 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 437 transitions. [2021-06-10 23:57:59,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 437 transitions. [2021-06-10 23:57:59,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 23:57:59,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 437 transitions. [2021-06-10 23:57:59,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:59,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:59,665 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:59,665 INFO L185 Difference]: Start difference. First operand has 45 places, 114 transitions, 334 flow. Second operand 3 states and 437 transitions. [2021-06-10 23:57:59,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 107 transitions, 321 flow [2021-06-10 23:57:59,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 107 transitions, 320 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 23:57:59,670 INFO L241 Difference]: Finished difference. Result has 46 places, 107 transitions, 314 flow [2021-06-10 23:57:59,670 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=314, PETRI_PLACES=46, PETRI_TRANSITIONS=107} [2021-06-10 23:57:59,671 INFO L343 CegarLoopForPetriNet]: 62 programPoint places, -16 predicate places. [2021-06-10 23:57:59,671 INFO L480 AbstractCegarLoop]: Abstraction has has 46 places, 107 transitions, 314 flow [2021-06-10 23:57:59,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:59,671 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:57:59,671 INFO L263 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, 1, 1, 1, 1, 1, 1] [2021-06-10 23:57:59,671 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 23:57:59,672 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_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]=== [2021-06-10 23:57:59,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:57:59,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1212135468, now seen corresponding path program 1 times [2021-06-10 23:57:59,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:57:59,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429301166] [2021-06-10 23:57:59,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:57:59,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:57:59,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:59,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:57:59,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:59,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 23:57:59,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:59,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:57:59,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:57:59,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429301166] [2021-06-10 23:57:59,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:57:59,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 23:57:59,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316858201] [2021-06-10 23:57:59,716 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 23:57:59,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:57:59,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 23:57:59,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 23:57:59,718 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 153 [2021-06-10 23:57:59,719 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 107 transitions, 314 flow. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:59,719 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:57:59,719 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 153 [2021-06-10 23:57:59,719 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 23:57:59,770 INFO L129 PetriNetUnfolder]: 524/797 cut-off events. [2021-06-10 23:57:59,770 INFO L130 PetriNetUnfolder]: For 179/179 co-relation queries the response was YES. [2021-06-10 23:57:59,772 INFO L84 FinitePrefix]: Finished finitePrefix Result has 860 conditions, 797 events. 524/797 cut-off events. For 179/179 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3373 event pairs, 0 based on Foata normal form. 133/930 useless extension candidates. Maximal degree in co-relation 848. Up to 168 conditions per place. [2021-06-10 23:57:59,775 INFO L132 encePairwiseOnDemand]: 146/153 looper letters, 4 selfloop transitions, 1 changer transitions 0/101 dead transitions. [2021-06-10 23:57:59,775 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 101 transitions, 306 flow [2021-06-10 23:57:59,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 23:57:59,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 23:57:59,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 437 transitions. [2021-06-10 23:57:59,777 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9520697167755992 [2021-06-10 23:57:59,778 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 437 transitions. [2021-06-10 23:57:59,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 437 transitions. [2021-06-10 23:57:59,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 23:57:59,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 437 transitions. [2021-06-10 23:57:59,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:59,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:59,785 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:59,790 INFO L185 Difference]: Start difference. First operand has 46 places, 107 transitions, 314 flow. Second operand 3 states and 437 transitions. [2021-06-10 23:57:59,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 101 transitions, 306 flow [2021-06-10 23:57:59,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 101 transitions, 305 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 23:57:59,794 INFO L241 Difference]: Finished difference. Result has 47 places, 101 transitions, 297 flow [2021-06-10 23:57:59,794 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=297, PETRI_PLACES=47, PETRI_TRANSITIONS=101} [2021-06-10 23:57:59,794 INFO L343 CegarLoopForPetriNet]: 62 programPoint places, -15 predicate places. [2021-06-10 23:57:59,794 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 101 transitions, 297 flow [2021-06-10 23:57:59,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:59,795 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:57:59,795 INFO L263 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, 1, 1, 1, 1, 1, 1] [2021-06-10 23:57:59,795 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 23:57:59,795 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_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]=== [2021-06-10 23:57:59,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:57:59,796 INFO L82 PathProgramCache]: Analyzing trace with hash 318375666, now seen corresponding path program 1 times [2021-06-10 23:57:59,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:57:59,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574926535] [2021-06-10 23:57:59,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:57:59,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:57:59,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:59,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:57:59,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:59,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 23:57:59,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:59,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:57:59,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:57:59,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574926535] [2021-06-10 23:57:59,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:57:59,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 23:57:59,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883210532] [2021-06-10 23:57:59,837 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 23:57:59,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:57:59,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 23:57:59,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 23:57:59,838 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 153 [2021-06-10 23:57:59,839 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 101 transitions, 297 flow. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:59,839 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:57:59,839 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 153 [2021-06-10 23:57:59,839 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 23:57:59,892 INFO L129 PetriNetUnfolder]: 499/766 cut-off events. [2021-06-10 23:57:59,892 INFO L130 PetriNetUnfolder]: For 87/87 co-relation queries the response was YES. [2021-06-10 23:57:59,893 INFO L84 FinitePrefix]: Finished finitePrefix Result has 865 conditions, 766 events. 499/766 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3367 event pairs, 0 based on Foata normal form. 6/772 useless extension candidates. Maximal degree in co-relation 852. Up to 168 conditions per place. [2021-06-10 23:57:59,896 INFO L132 encePairwiseOnDemand]: 150/153 looper letters, 8 selfloop transitions, 1 changer transitions 0/99 dead transitions. [2021-06-10 23:57:59,896 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 99 transitions, 309 flow [2021-06-10 23:57:59,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 23:57:59,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 23:57:59,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 437 transitions. [2021-06-10 23:57:59,898 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9520697167755992 [2021-06-10 23:57:59,898 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 437 transitions. [2021-06-10 23:57:59,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 437 transitions. [2021-06-10 23:57:59,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 23:57:59,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 437 transitions. [2021-06-10 23:57:59,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:59,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:59,901 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:59,901 INFO L185 Difference]: Start difference. First operand has 47 places, 101 transitions, 297 flow. Second operand 3 states and 437 transitions. [2021-06-10 23:57:59,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 99 transitions, 309 flow [2021-06-10 23:57:59,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 99 transitions, 308 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 23:57:59,904 INFO L241 Difference]: Finished difference. Result has 48 places, 99 transitions, 292 flow [2021-06-10 23:57:59,904 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=48, PETRI_TRANSITIONS=99} [2021-06-10 23:57:59,905 INFO L343 CegarLoopForPetriNet]: 62 programPoint places, -14 predicate places. [2021-06-10 23:57:59,905 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 99 transitions, 292 flow [2021-06-10 23:57:59,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:59,905 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:57:59,905 INFO L263 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, 1, 1, 1, 1, 1, 1] [2021-06-10 23:57:59,906 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 23:57:59,906 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_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]=== [2021-06-10 23:57:59,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:57:59,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1259935062, now seen corresponding path program 1 times [2021-06-10 23:57:59,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:57:59,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983063859] [2021-06-10 23:57:59,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:57:59,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:57:59,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:59,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:57:59,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:59,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 23:57:59,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:57:59,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:57:59,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:57:59,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983063859] [2021-06-10 23:57:59,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:57:59,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 23:57:59,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846148993] [2021-06-10 23:57:59,951 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 23:57:59,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:57:59,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 23:57:59,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 23:57:59,953 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 153 [2021-06-10 23:57:59,953 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 99 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:57:59,953 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:57:59,953 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 153 [2021-06-10 23:57:59,953 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 23:58:00,004 INFO L129 PetriNetUnfolder]: 109/212 cut-off events. [2021-06-10 23:58:00,004 INFO L130 PetriNetUnfolder]: For 82/82 co-relation queries the response was YES. [2021-06-10 23:58:00,009 INFO L84 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 212 events. 109/212 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 766 event pairs, 0 based on Foata normal form. 81/293 useless extension candidates. Maximal degree in co-relation 222. Up to 45 conditions per place. [2021-06-10 23:58:00,010 INFO L132 encePairwiseOnDemand]: 143/153 looper letters, 1 selfloop transitions, 1 changer transitions 0/81 dead transitions. [2021-06-10 23:58:00,010 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 81 transitions, 242 flow [2021-06-10 23:58:00,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 23:58:00,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 23:58:00,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 437 transitions. [2021-06-10 23:58:00,012 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9520697167755992 [2021-06-10 23:58:00,012 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 437 transitions. [2021-06-10 23:58:00,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 437 transitions. [2021-06-10 23:58:00,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 23:58:00,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 437 transitions. [2021-06-10 23:58:00,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:00,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:00,014 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:00,015 INFO L185 Difference]: Start difference. First operand has 48 places, 99 transitions, 292 flow. Second operand 3 states and 437 transitions. [2021-06-10 23:58:00,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 81 transitions, 242 flow [2021-06-10 23:58:00,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 81 transitions, 241 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 23:58:00,017 INFO L241 Difference]: Finished difference. Result has 49 places, 81 transitions, 239 flow [2021-06-10 23:58:00,017 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=47, 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=239, PETRI_PLACES=49, PETRI_TRANSITIONS=81} [2021-06-10 23:58:00,017 INFO L343 CegarLoopForPetriNet]: 62 programPoint places, -13 predicate places. [2021-06-10 23:58:00,017 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 81 transitions, 239 flow [2021-06-10 23:58:00,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:00,018 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:58:00,018 INFO L263 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, 1, 1, 1, 1, 1, 1] [2021-06-10 23:58:00,018 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 23:58:00,018 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_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]=== [2021-06-10 23:58:00,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:58:00,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1291197958, now seen corresponding path program 1 times [2021-06-10 23:58:00,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:58:00,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315379339] [2021-06-10 23:58:00,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:58:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:58:00,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:58:00,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:58:00,043 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:58:00,044 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 23:58:00,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:58:00,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:58:00,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:58:00,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315379339] [2021-06-10 23:58:00,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:58:00,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 23:58:00,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165811652] [2021-06-10 23:58:00,048 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 23:58:00,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:58:00,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 23:58:00,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 23:58:00,049 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 153 [2021-06-10 23:58:00,050 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 81 transitions, 239 flow. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:00,050 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:58:00,050 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 153 [2021-06-10 23:58:00,050 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 23:58:00,062 INFO L129 PetriNetUnfolder]: 17/64 cut-off events. [2021-06-10 23:58:00,062 INFO L130 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2021-06-10 23:58:00,062 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 64 events. 17/64 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 119 event pairs, 0 based on Foata normal form. 24/88 useless extension candidates. Maximal degree in co-relation 75. Up to 10 conditions per place. [2021-06-10 23:58:00,063 INFO L132 encePairwiseOnDemand]: 144/153 looper letters, 1 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2021-06-10 23:58:00,063 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 52 transitions, 156 flow [2021-06-10 23:58:00,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 23:58:00,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 23:58:00,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 436 transitions. [2021-06-10 23:58:00,064 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9498910675381264 [2021-06-10 23:58:00,064 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 436 transitions. [2021-06-10 23:58:00,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 436 transitions. [2021-06-10 23:58:00,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 23:58:00,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 436 transitions. [2021-06-10 23:58:00,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:00,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:00,068 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:00,068 INFO L185 Difference]: Start difference. First operand has 49 places, 81 transitions, 239 flow. Second operand 3 states and 436 transitions. [2021-06-10 23:58:00,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 52 transitions, 156 flow [2021-06-10 23:58:00,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 155 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 23:58:00,069 INFO L241 Difference]: Finished difference. Result has 50 places, 52 transitions, 153 flow [2021-06-10 23:58:00,070 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=50, PETRI_TRANSITIONS=52} [2021-06-10 23:58:00,070 INFO L343 CegarLoopForPetriNet]: 62 programPoint places, -12 predicate places. [2021-06-10 23:58:00,070 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 52 transitions, 153 flow [2021-06-10 23:58:00,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:00,070 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:58:00,070 INFO L263 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, 1, 1, 1, 1, 1, 1] [2021-06-10 23:58:00,070 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 23:58:00,070 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_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]=== [2021-06-10 23:58:00,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:58:00,071 INFO L82 PathProgramCache]: Analyzing trace with hash 937811846, now seen corresponding path program 1 times [2021-06-10 23:58:00,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:58:00,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645334572] [2021-06-10 23:58:00,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:58:00,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:58:00,099 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:58:00,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:58:00,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:58:00,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 23:58:00,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:58:00,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:58:00,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:58:00,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645334572] [2021-06-10 23:58:00,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:58:00,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 23:58:00,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758028710] [2021-06-10 23:58:00,105 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 23:58:00,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:58:00,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 23:58:00,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 23:58:00,106 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 153 [2021-06-10 23:58:00,107 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 52 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:00,107 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:58:00,107 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 153 [2021-06-10 23:58:00,107 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 23:58:00,119 INFO L129 PetriNetUnfolder]: 1/33 cut-off events. [2021-06-10 23:58:00,119 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-06-10 23:58:00,119 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 33 events. 1/33 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs, 0 based on Foata normal form. 6/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2021-06-10 23:58:00,119 INFO L132 encePairwiseOnDemand]: 147/153 looper letters, 1 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2021-06-10 23:58:00,120 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 33 transitions, 100 flow [2021-06-10 23:58:00,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 23:58:00,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 23:58:00,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 433 transitions. [2021-06-10 23:58:00,121 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9433551198257081 [2021-06-10 23:58:00,121 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 433 transitions. [2021-06-10 23:58:00,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 433 transitions. [2021-06-10 23:58:00,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 23:58:00,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 433 transitions. [2021-06-10 23:58:00,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:00,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:00,123 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:00,123 INFO L185 Difference]: Start difference. First operand has 50 places, 52 transitions, 153 flow. Second operand 3 states and 433 transitions. [2021-06-10 23:58:00,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 33 transitions, 100 flow [2021-06-10 23:58:00,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 33 transitions, 99 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 23:58:00,125 INFO L241 Difference]: Finished difference. Result has 51 places, 33 transitions, 97 flow [2021-06-10 23:58:00,125 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=51, PETRI_TRANSITIONS=33} [2021-06-10 23:58:00,125 INFO L343 CegarLoopForPetriNet]: 62 programPoint places, -11 predicate places. [2021-06-10 23:58:00,125 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 33 transitions, 97 flow [2021-06-10 23:58:00,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:00,126 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:58:00,126 INFO L263 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, 1, 1, 1, 1, 1, 1] [2021-06-10 23:58:00,126 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-10 23:58:00,126 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_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]=== [2021-06-10 23:58:00,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:58:00,127 INFO L82 PathProgramCache]: Analyzing trace with hash -300766876, now seen corresponding path program 1 times [2021-06-10 23:58:00,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:58:00,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105964422] [2021-06-10 23:58:00,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:58:00,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:58:00,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:58:00,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:58:00,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:58:00,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 23:58:00,265 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 23:58:00,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 23:58:00,290 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 23:58:00,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 23:58:00,326 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 23:58:00,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 23:58:00,379 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-10 23:58:00,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-10 23:58:00,432 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-06-10 23:58:00,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-06-10 23:58:00,490 INFO L142 QuantifierPusher]: treesize reduction 54, result has 50.5 percent of original size [2021-06-10 23:58:00,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-06-10 23:58:00,542 INFO L142 QuantifierPusher]: treesize reduction 63, result has 50.0 percent of original size [2021-06-10 23:58:00,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-06-10 23:58:00,605 INFO L142 QuantifierPusher]: treesize reduction 72, result has 49.7 percent of original size [2021-06-10 23:58:00,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-06-10 23:58:00,677 INFO L142 QuantifierPusher]: treesize reduction 81, result has 47.4 percent of original size [2021-06-10 23:58:00,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-06-10 23:58:00,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:58:00,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105964422] [2021-06-10 23:58:00,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:58:00,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-10 23:58:00,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194420823] [2021-06-10 23:58:00,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-10 23:58:00,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:58:00,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-10 23:58:00,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-06-10 23:58:00,736 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 153 [2021-06-10 23:58:00,738 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 33 transitions, 97 flow. Second operand has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:00,738 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:58:00,738 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 153 [2021-06-10 23:58:00,738 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 23:58:01,278 INFO L129 PetriNetUnfolder]: 5451/7502 cut-off events. [2021-06-10 23:58:01,278 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 23:58:01,308 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14445 conditions, 7502 events. 5451/7502 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 41588 event pairs, 1793 based on Foata normal form. 1/7250 useless extension candidates. Maximal degree in co-relation 14435. Up to 2561 conditions per place. [2021-06-10 23:58:01,345 INFO L132 encePairwiseOnDemand]: 142/153 looper letters, 54 selfloop transitions, 10 changer transitions 0/86 dead transitions. [2021-06-10 23:58:01,346 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 86 transitions, 331 flow [2021-06-10 23:58:01,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-10 23:58:01,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-06-10 23:58:01,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1637 transitions. [2021-06-10 23:58:01,349 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8916122004357299 [2021-06-10 23:58:01,349 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1637 transitions. [2021-06-10 23:58:01,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1637 transitions. [2021-06-10 23:58:01,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 23:58:01,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1637 transitions. [2021-06-10 23:58:01,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 136.41666666666666) internal successors, (1637), 12 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:01,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 153.0) internal successors, (1989), 13 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:01,356 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 153.0) internal successors, (1989), 13 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:01,356 INFO L185 Difference]: Start difference. First operand has 51 places, 33 transitions, 97 flow. Second operand 12 states and 1637 transitions. [2021-06-10 23:58:01,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 86 transitions, 331 flow [2021-06-10 23:58:01,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 86 transitions, 330 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 23:58:01,359 INFO L241 Difference]: Finished difference. Result has 71 places, 42 transitions, 173 flow [2021-06-10 23:58:01,359 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=173, PETRI_PLACES=71, PETRI_TRANSITIONS=42} [2021-06-10 23:58:01,359 INFO L343 CegarLoopForPetriNet]: 62 programPoint places, 9 predicate places. [2021-06-10 23:58:01,360 INFO L480 AbstractCegarLoop]: Abstraction has has 71 places, 42 transitions, 173 flow [2021-06-10 23:58:01,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:01,360 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:58:01,360 INFO L263 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, 1, 1, 1, 1, 1, 1] [2021-06-10 23:58:01,361 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-10 23:58:01,361 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_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]=== [2021-06-10 23:58:01,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:58:01,361 INFO L82 PathProgramCache]: Analyzing trace with hash -2005207858, now seen corresponding path program 2 times [2021-06-10 23:58:01,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:58:01,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422731202] [2021-06-10 23:58:01,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:58:01,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:58:01,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:58:01,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:58:01,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:58:01,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 23:58:01,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:58:01,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 23:58:01,417 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 23:58:01,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 23:58:01,429 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 23:58:01,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 23:58:01,447 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 23:58:01,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 23:58:01,470 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 23:58:01,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 23:58:01,499 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-10 23:58:01,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-10 23:58:01,537 INFO L142 QuantifierPusher]: treesize reduction 45, result has 56.7 percent of original size [2021-06-10 23:58:01,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-06-10 23:58:01,585 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-06-10 23:58:01,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-06-10 23:58:01,642 INFO L142 QuantifierPusher]: treesize reduction 81, result has 47.4 percent of original size [2021-06-10 23:58:01,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-06-10 23:58:01,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:58:01,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422731202] [2021-06-10 23:58:01,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:58:01,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-10 23:58:01,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384544925] [2021-06-10 23:58:01,692 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-10 23:58:01,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:58:01,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-10 23:58:01,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-06-10 23:58:01,694 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 153 [2021-06-10 23:58:01,695 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 42 transitions, 173 flow. Second operand has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:01,695 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:58:01,695 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 153 [2021-06-10 23:58:01,695 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 23:58:02,844 INFO L129 PetriNetUnfolder]: 7397/11813 cut-off events. [2021-06-10 23:58:02,844 INFO L130 PetriNetUnfolder]: For 11652/11673 co-relation queries the response was YES. [2021-06-10 23:58:02,902 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31216 conditions, 11813 events. 7397/11813 cut-off events. For 11652/11673 co-relation queries the response was YES. Maximal size of possible extension queue 813. Compared 83482 event pairs, 2307 based on Foata normal form. 1/11559 useless extension candidates. Maximal degree in co-relation 31196. Up to 3497 conditions per place. [2021-06-10 23:58:02,976 INFO L132 encePairwiseOnDemand]: 142/153 looper letters, 78 selfloop transitions, 17 changer transitions 0/117 dead transitions. [2021-06-10 23:58:02,976 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 117 transitions, 716 flow [2021-06-10 23:58:02,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-10 23:58:02,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-06-10 23:58:02,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1637 transitions. [2021-06-10 23:58:02,980 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8916122004357299 [2021-06-10 23:58:02,980 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1637 transitions. [2021-06-10 23:58:02,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1637 transitions. [2021-06-10 23:58:02,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 23:58:02,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1637 transitions. [2021-06-10 23:58:02,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 136.41666666666666) internal successors, (1637), 12 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:02,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 153.0) internal successors, (1989), 13 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:02,987 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 153.0) internal successors, (1989), 13 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:02,987 INFO L185 Difference]: Start difference. First operand has 71 places, 42 transitions, 173 flow. Second operand 12 states and 1637 transitions. [2021-06-10 23:58:02,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 117 transitions, 716 flow [2021-06-10 23:58:02,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 117 transitions, 706 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 23:58:02,994 INFO L241 Difference]: Finished difference. Result has 91 places, 57 transitions, 342 flow [2021-06-10 23:58:02,994 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=342, PETRI_PLACES=91, PETRI_TRANSITIONS=57} [2021-06-10 23:58:02,994 INFO L343 CegarLoopForPetriNet]: 62 programPoint places, 29 predicate places. [2021-06-10 23:58:02,994 INFO L480 AbstractCegarLoop]: Abstraction has has 91 places, 57 transitions, 342 flow [2021-06-10 23:58:02,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:02,995 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:58:02,995 INFO L263 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, 1, 1, 1, 1, 1, 1] [2021-06-10 23:58:02,995 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-10 23:58:02,995 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_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]=== [2021-06-10 23:58:02,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:58:02,996 INFO L82 PathProgramCache]: Analyzing trace with hash -629502388, now seen corresponding path program 3 times [2021-06-10 23:58:02,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:58:02,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440256554] [2021-06-10 23:58:02,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:58:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:58:03,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:58:03,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:58:03,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:58:03,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 23:58:03,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:58:03,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 23:58:03,041 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 23:58:03,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 23:58:03,053 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 23:58:03,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 23:58:03,079 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 23:58:03,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 23:58:03,101 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 23:58:03,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 23:58:03,138 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-10 23:58:03,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-10 23:58:03,170 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-10 23:58:03,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-10 23:58:03,229 INFO L142 QuantifierPusher]: treesize reduction 72, result has 49.7 percent of original size [2021-06-10 23:58:03,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-06-10 23:58:03,279 INFO L142 QuantifierPusher]: treesize reduction 81, result has 47.4 percent of original size [2021-06-10 23:58:03,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-06-10 23:58:03,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:58:03,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440256554] [2021-06-10 23:58:03,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:58:03,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-10 23:58:03,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549518062] [2021-06-10 23:58:03,325 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-10 23:58:03,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:58:03,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-10 23:58:03,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-06-10 23:58:03,327 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 153 [2021-06-10 23:58:03,329 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 57 transitions, 342 flow. Second operand has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:03,329 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:58:03,329 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 153 [2021-06-10 23:58:03,329 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 23:58:05,076 INFO L129 PetriNetUnfolder]: 9902/16979 cut-off events. [2021-06-10 23:58:05,076 INFO L130 PetriNetUnfolder]: For 44887/45655 co-relation queries the response was YES. [2021-06-10 23:58:05,202 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57174 conditions, 16979 events. 9902/16979 cut-off events. For 44887/45655 co-relation queries the response was YES. Maximal size of possible extension queue 1442. Compared 140887 event pairs, 2941 based on Foata normal form. 1/16716 useless extension candidates. Maximal degree in co-relation 57144. Up to 4901 conditions per place. [2021-06-10 23:58:05,314 INFO L132 encePairwiseOnDemand]: 142/153 looper letters, 102 selfloop transitions, 31 changer transitions 0/155 dead transitions. [2021-06-10 23:58:05,314 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 155 transitions, 1313 flow [2021-06-10 23:58:05,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-10 23:58:05,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-06-10 23:58:05,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1637 transitions. [2021-06-10 23:58:05,318 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8916122004357299 [2021-06-10 23:58:05,318 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1637 transitions. [2021-06-10 23:58:05,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1637 transitions. [2021-06-10 23:58:05,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 23:58:05,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1637 transitions. [2021-06-10 23:58:05,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 136.41666666666666) internal successors, (1637), 12 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:05,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 153.0) internal successors, (1989), 13 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:05,325 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 153.0) internal successors, (1989), 13 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:05,325 INFO L185 Difference]: Start difference. First operand has 91 places, 57 transitions, 342 flow. Second operand 12 states and 1637 transitions. [2021-06-10 23:58:05,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 155 transitions, 1313 flow [2021-06-10 23:58:05,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 155 transitions, 1292 flow, removed 5 selfloop flow, removed 1 redundant places. [2021-06-10 23:58:05,395 INFO L241 Difference]: Finished difference. Result has 111 places, 85 transitions, 731 flow [2021-06-10 23:58:05,395 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=731, PETRI_PLACES=111, PETRI_TRANSITIONS=85} [2021-06-10 23:58:05,396 INFO L343 CegarLoopForPetriNet]: 62 programPoint places, 49 predicate places. [2021-06-10 23:58:05,396 INFO L480 AbstractCegarLoop]: Abstraction has has 111 places, 85 transitions, 731 flow [2021-06-10 23:58:05,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:05,396 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:58:05,396 INFO L263 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, 1, 1, 1, 1, 1, 1] [2021-06-10 23:58:05,397 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-10 23:58:05,397 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_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]=== [2021-06-10 23:58:05,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:58:05,397 INFO L82 PathProgramCache]: Analyzing trace with hash -263008046, now seen corresponding path program 4 times [2021-06-10 23:58:05,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:58:05,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734449686] [2021-06-10 23:58:05,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:58:05,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:58:05,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:58:05,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:58:05,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:58:05,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 23:58:05,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:58:05,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 23:58:05,441 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 23:58:05,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 23:58:05,452 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-10 23:58:05,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 23:58:05,469 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 23:58:05,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 23:58:05,491 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 23:58:05,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 23:58:05,593 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-10 23:58:05,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-10 23:58:05,633 INFO L142 QuantifierPusher]: treesize reduction 63, result has 50.0 percent of original size [2021-06-10 23:58:05,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-06-10 23:58:05,677 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-06-10 23:58:05,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-06-10 23:58:05,731 INFO L142 QuantifierPusher]: treesize reduction 81, result has 47.4 percent of original size [2021-06-10 23:58:05,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-06-10 23:58:05,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:58:05,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734449686] [2021-06-10 23:58:05,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:58:05,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-10 23:58:05,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576791456] [2021-06-10 23:58:05,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-10 23:58:05,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:58:05,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-10 23:58:05,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-06-10 23:58:05,782 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 153 [2021-06-10 23:58:05,784 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 85 transitions, 731 flow. Second operand has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:05,784 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:58:05,784 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 153 [2021-06-10 23:58:05,784 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 23:58:08,442 INFO L129 PetriNetUnfolder]: 13302/24253 cut-off events. [2021-06-10 23:58:08,443 INFO L130 PetriNetUnfolder]: For 120897/122063 co-relation queries the response was YES. [2021-06-10 23:58:08,617 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98494 conditions, 24253 events. 13302/24253 cut-off events. For 120897/122063 co-relation queries the response was YES. Maximal size of possible extension queue 2266. Compared 229626 event pairs, 3901 based on Foata normal form. 1/23944 useless extension candidates. Maximal degree in co-relation 98454. Up to 6916 conditions per place. [2021-06-10 23:58:08,770 INFO L132 encePairwiseOnDemand]: 142/153 looper letters, 145 selfloop transitions, 57 changer transitions 0/224 dead transitions. [2021-06-10 23:58:08,770 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 224 transitions, 2538 flow [2021-06-10 23:58:08,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-10 23:58:08,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-06-10 23:58:08,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1637 transitions. [2021-06-10 23:58:08,774 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8916122004357299 [2021-06-10 23:58:08,774 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1637 transitions. [2021-06-10 23:58:08,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1637 transitions. [2021-06-10 23:58:08,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 23:58:08,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1637 transitions. [2021-06-10 23:58:08,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 136.41666666666666) internal successors, (1637), 12 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:08,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 153.0) internal successors, (1989), 13 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:08,782 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 153.0) internal successors, (1989), 13 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:08,782 INFO L185 Difference]: Start difference. First operand has 111 places, 85 transitions, 731 flow. Second operand 12 states and 1637 transitions. [2021-06-10 23:58:08,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 224 transitions, 2538 flow [2021-06-10 23:58:09,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 224 transitions, 2516 flow, removed 5 selfloop flow, removed 1 redundant places. [2021-06-10 23:58:09,062 INFO L241 Difference]: Finished difference. Result has 131 places, 137 transitions, 1611 flow [2021-06-10 23:58:09,063 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1611, PETRI_PLACES=131, PETRI_TRANSITIONS=137} [2021-06-10 23:58:09,063 INFO L343 CegarLoopForPetriNet]: 62 programPoint places, 69 predicate places. [2021-06-10 23:58:09,063 INFO L480 AbstractCegarLoop]: Abstraction has has 131 places, 137 transitions, 1611 flow [2021-06-10 23:58:09,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:09,064 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:58:09,064 INFO L263 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, 1, 1, 1, 1, 1, 1] [2021-06-10 23:58:09,064 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-10 23:58:09,064 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_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]=== [2021-06-10 23:58:09,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:58:09,065 INFO L82 PathProgramCache]: Analyzing trace with hash -277337024, now seen corresponding path program 5 times [2021-06-10 23:58:09,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:58:09,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487953044] [2021-06-10 23:58:09,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:58:09,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:58:09,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:58:09,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:58:09,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:58:09,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 23:58:09,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:58:09,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 23:58:09,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:58:09,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 23:58:09,137 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 23:58:09,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 23:58:09,155 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 23:58:09,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 23:58:09,276 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2021-06-10 23:58:09,279 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-10 23:58:09,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-10 23:58:09,304 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-10 23:58:09,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-10 23:58:09,335 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-10 23:58:09,340 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-10 23:58:09,378 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-06-10 23:58:09,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-06-10 23:58:09,431 INFO L142 QuantifierPusher]: treesize reduction 81, result has 47.4 percent of original size [2021-06-10 23:58:09,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-06-10 23:58:09,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:58:09,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487953044] [2021-06-10 23:58:09,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:58:09,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-10 23:58:09,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004326108] [2021-06-10 23:58:09,469 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-10 23:58:09,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:58:09,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-10 23:58:09,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-06-10 23:58:09,471 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 153 [2021-06-10 23:58:09,472 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 137 transitions, 1611 flow. Second operand has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:09,472 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:58:09,472 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 153 [2021-06-10 23:58:09,472 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 23:58:14,094 INFO L129 PetriNetUnfolder]: 18649/35955 cut-off events. [2021-06-10 23:58:14,095 INFO L130 PetriNetUnfolder]: For 286452/289473 co-relation queries the response was YES. [2021-06-10 23:58:14,701 INFO L84 FinitePrefix]: Finished finitePrefix Result has 171957 conditions, 35955 events. 18649/35955 cut-off events. For 286452/289473 co-relation queries the response was YES. Maximal size of possible extension queue 3379. Compared 379596 event pairs, 4803 based on Foata normal form. 1/35424 useless extension candidates. Maximal degree in co-relation 171907. Up to 10541 conditions per place. [2021-06-10 23:58:14,918 INFO L132 encePairwiseOnDemand]: 142/153 looper letters, 225 selfloop transitions, 69 changer transitions 0/316 dead transitions. [2021-06-10 23:58:14,919 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 316 transitions, 4420 flow [2021-06-10 23:58:14,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-10 23:58:14,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-06-10 23:58:14,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1637 transitions. [2021-06-10 23:58:14,923 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8916122004357299 [2021-06-10 23:58:14,923 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1637 transitions. [2021-06-10 23:58:14,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1637 transitions. [2021-06-10 23:58:14,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 23:58:14,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1637 transitions. [2021-06-10 23:58:14,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 136.41666666666666) internal successors, (1637), 12 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:14,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 153.0) internal successors, (1989), 13 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:14,930 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 153.0) internal successors, (1989), 13 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:14,930 INFO L185 Difference]: Start difference. First operand has 131 places, 137 transitions, 1611 flow. Second operand 12 states and 1637 transitions. [2021-06-10 23:58:14,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 316 transitions, 4420 flow [2021-06-10 23:58:15,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 316 transitions, 4394 flow, removed 5 selfloop flow, removed 1 redundant places. [2021-06-10 23:58:15,513 INFO L241 Difference]: Finished difference. Result has 151 places, 181 transitions, 2506 flow [2021-06-10 23:58:15,514 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=1596, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2506, PETRI_PLACES=151, PETRI_TRANSITIONS=181} [2021-06-10 23:58:15,514 INFO L343 CegarLoopForPetriNet]: 62 programPoint places, 89 predicate places. [2021-06-10 23:58:15,514 INFO L480 AbstractCegarLoop]: Abstraction has has 151 places, 181 transitions, 2506 flow [2021-06-10 23:58:15,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:15,515 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:58:15,515 INFO L263 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, 1, 1, 1, 1, 1, 1] [2021-06-10 23:58:15,515 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-10 23:58:15,515 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_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]=== [2021-06-10 23:58:15,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:58:15,516 INFO L82 PathProgramCache]: Analyzing trace with hash -192685538, now seen corresponding path program 6 times [2021-06-10 23:58:15,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:58:15,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86271917] [2021-06-10 23:58:15,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:58:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:58:15,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:58:15,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:58:15,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:58:15,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 23:58:15,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:58:15,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 23:58:15,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:58:15,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 23:58:15,573 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 23:58:15,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 23:58:15,588 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-10 23:58:15,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-10 23:58:15,612 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 23:58:15,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 23:58:15,638 INFO L142 QuantifierPusher]: treesize reduction 36, result has 58.6 percent of original size [2021-06-10 23:58:15,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-06-10 23:58:15,667 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-10 23:58:15,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-10 23:58:15,718 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-06-10 23:58:15,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-06-10 23:58:15,772 INFO L142 QuantifierPusher]: treesize reduction 81, result has 47.4 percent of original size [2021-06-10 23:58:15,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-06-10 23:58:15,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:58:15,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86271917] [2021-06-10 23:58:15,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:58:15,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-10 23:58:15,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310976552] [2021-06-10 23:58:15,817 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-10 23:58:15,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:58:15,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-10 23:58:15,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-06-10 23:58:15,819 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 153 [2021-06-10 23:58:15,821 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 181 transitions, 2506 flow. Second operand has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:15,821 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:58:15,821 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 153 [2021-06-10 23:58:15,821 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 23:58:23,708 INFO L129 PetriNetUnfolder]: 24049/48586 cut-off events. [2021-06-10 23:58:23,708 INFO L130 PetriNetUnfolder]: For 547455/554333 co-relation queries the response was YES. [2021-06-10 23:58:24,372 INFO L84 FinitePrefix]: Finished finitePrefix Result has 260790 conditions, 48586 events. 24049/48586 cut-off events. For 547455/554333 co-relation queries the response was YES. Maximal size of possible extension queue 4572. Compared 558582 event pairs, 7450 based on Foata normal form. 1/47711 useless extension candidates. Maximal degree in co-relation 260730. Up to 13995 conditions per place. [2021-06-10 23:58:24,623 INFO L132 encePairwiseOnDemand]: 142/153 looper letters, 236 selfloop transitions, 94 changer transitions 0/352 dead transitions. [2021-06-10 23:58:24,624 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 352 transitions, 5566 flow [2021-06-10 23:58:24,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-10 23:58:24,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-06-10 23:58:24,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1637 transitions. [2021-06-10 23:58:24,627 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8916122004357299 [2021-06-10 23:58:24,627 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1637 transitions. [2021-06-10 23:58:24,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1637 transitions. [2021-06-10 23:58:24,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 23:58:24,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1637 transitions. [2021-06-10 23:58:24,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 136.41666666666666) internal successors, (1637), 12 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:24,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 153.0) internal successors, (1989), 13 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:24,633 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 153.0) internal successors, (1989), 13 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:24,633 INFO L185 Difference]: Start difference. First operand has 151 places, 181 transitions, 2506 flow. Second operand 12 states and 1637 transitions. [2021-06-10 23:58:24,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 352 transitions, 5566 flow [2021-06-10 23:58:26,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 352 transitions, 5392 flow, removed 71 selfloop flow, removed 1 redundant places. [2021-06-10 23:58:26,172 INFO L241 Difference]: Finished difference. Result has 171 places, 230 transitions, 3548 flow [2021-06-10 23:58:26,172 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=2404, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3548, PETRI_PLACES=171, PETRI_TRANSITIONS=230} [2021-06-10 23:58:26,173 INFO L343 CegarLoopForPetriNet]: 62 programPoint places, 109 predicate places. [2021-06-10 23:58:26,173 INFO L480 AbstractCegarLoop]: Abstraction has has 171 places, 230 transitions, 3548 flow [2021-06-10 23:58:26,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:26,173 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:58:26,173 INFO L263 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, 1, 1, 1, 1, 1, 1] [2021-06-10 23:58:26,173 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-10 23:58:26,174 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_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]=== [2021-06-10 23:58:26,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:58:26,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1030058894, now seen corresponding path program 7 times [2021-06-10 23:58:26,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:58:26,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656621187] [2021-06-10 23:58:26,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:58:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:58:26,199 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:58:26,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:58:26,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:58:26,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 23:58:26,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:58:26,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 23:58:26,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:58:26,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 23:58:26,222 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 23:58:26,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 23:58:26,237 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 23:58:26,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 23:58:26,261 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-10 23:58:26,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-10 23:58:26,290 INFO L142 QuantifierPusher]: treesize reduction 36, result has 61.3 percent of original size [2021-06-10 23:58:26,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-06-10 23:58:26,346 INFO L142 QuantifierPusher]: treesize reduction 45, result has 59.1 percent of original size [2021-06-10 23:58:26,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-10 23:58:26,408 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-06-10 23:58:26,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-06-10 23:58:26,456 INFO L142 QuantifierPusher]: treesize reduction 81, result has 47.4 percent of original size [2021-06-10 23:58:26,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-06-10 23:58:26,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:58:26,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656621187] [2021-06-10 23:58:26,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:58:26,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-10 23:58:26,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774540399] [2021-06-10 23:58:26,498 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-10 23:58:26,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:58:26,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-10 23:58:26,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-06-10 23:58:26,500 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 153 [2021-06-10 23:58:26,501 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 230 transitions, 3548 flow. Second operand has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:26,501 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:58:26,501 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 153 [2021-06-10 23:58:26,501 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 23:58:40,791 INFO L129 PetriNetUnfolder]: 32623/69447 cut-off events. [2021-06-10 23:58:40,791 INFO L130 PetriNetUnfolder]: For 1024256/1037782 co-relation queries the response was YES. [2021-06-10 23:58:41,968 INFO L84 FinitePrefix]: Finished finitePrefix Result has 405011 conditions, 69447 events. 32623/69447 cut-off events. For 1024256/1037782 co-relation queries the response was YES. Maximal size of possible extension queue 7000. Compared 868704 event pairs, 16526 based on Foata normal form. 1/68369 useless extension candidates. Maximal degree in co-relation 404941. Up to 20004 conditions per place. [2021-06-10 23:58:42,335 INFO L132 encePairwiseOnDemand]: 142/153 looper letters, 332 selfloop transitions, 122 changer transitions 0/476 dead transitions. [2021-06-10 23:58:42,335 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 476 transitions, 8553 flow [2021-06-10 23:58:42,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-10 23:58:42,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-06-10 23:58:42,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1637 transitions. [2021-06-10 23:58:42,341 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8916122004357299 [2021-06-10 23:58:42,341 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1637 transitions. [2021-06-10 23:58:42,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1637 transitions. [2021-06-10 23:58:42,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 23:58:42,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1637 transitions. [2021-06-10 23:58:42,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 136.41666666666666) internal successors, (1637), 12 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:42,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 153.0) internal successors, (1989), 13 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:42,348 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 153.0) internal successors, (1989), 13 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:42,348 INFO L185 Difference]: Start difference. First operand has 171 places, 230 transitions, 3548 flow. Second operand 12 states and 1637 transitions. [2021-06-10 23:58:42,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 476 transitions, 8553 flow [2021-06-10 23:58:45,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 476 transitions, 8350 flow, removed 82 selfloop flow, removed 1 redundant places. [2021-06-10 23:58:45,875 INFO L241 Difference]: Finished difference. Result has 191 places, 320 transitions, 5656 flow [2021-06-10 23:58:45,876 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=3432, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5656, PETRI_PLACES=191, PETRI_TRANSITIONS=320} [2021-06-10 23:58:45,876 INFO L343 CegarLoopForPetriNet]: 62 programPoint places, 129 predicate places. [2021-06-10 23:58:45,876 INFO L480 AbstractCegarLoop]: Abstraction has has 191 places, 320 transitions, 5656 flow [2021-06-10 23:58:45,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:45,877 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:58:45,877 INFO L263 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, 1, 1, 1, 1, 1, 1] [2021-06-10 23:58:45,877 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-10 23:58:45,877 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_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]=== [2021-06-10 23:58:45,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:58:45,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1542497040, now seen corresponding path program 8 times [2021-06-10 23:58:45,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:58:45,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646025644] [2021-06-10 23:58:45,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:58:45,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:58:45,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:58:45,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:58:45,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:58:45,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 23:58:45,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:58:45,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 23:58:45,926 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-06-10 23:58:45,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 23:58:45,938 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-06-10 23:58:45,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-06-10 23:58:45,960 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-10 23:58:45,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-10 23:58:45,984 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-10 23:58:45,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-10 23:58:46,013 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-10 23:58:46,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-10 23:58:46,048 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-10 23:58:46,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-10 23:58:46,087 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-06-10 23:58:46,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-06-10 23:58:46,137 INFO L142 QuantifierPusher]: treesize reduction 81, result has 47.4 percent of original size [2021-06-10 23:58:46,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-06-10 23:58:46,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:58:46,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646025644] [2021-06-10 23:58:46,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:58:46,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-10 23:58:46,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088137655] [2021-06-10 23:58:46,200 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-10 23:58:46,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:58:46,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-10 23:58:46,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-06-10 23:58:46,202 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 153 [2021-06-10 23:58:46,203 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 320 transitions, 5656 flow. Second operand has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:58:46,204 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:58:46,204 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 153 [2021-06-10 23:58:46,204 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 23:59:17,343 INFO L129 PetriNetUnfolder]: 46496/117392 cut-off events. [2021-06-10 23:59:17,343 INFO L130 PetriNetUnfolder]: For 1876882/1915504 co-relation queries the response was YES. [2021-06-10 23:59:20,052 INFO L84 FinitePrefix]: Finished finitePrefix Result has 653171 conditions, 117392 events. 46496/117392 cut-off events. For 1876882/1915504 co-relation queries the response was YES. Maximal size of possible extension queue 12713. Compared 1798543 event pairs, 14912 based on Foata normal form. 12/115339 useless extension candidates. Maximal degree in co-relation 653091. Up to 29364 conditions per place. [2021-06-10 23:59:20,691 INFO L132 encePairwiseOnDemand]: 142/153 looper letters, 371 selfloop transitions, 196 changer transitions 0/589 dead transitions. [2021-06-10 23:59:20,691 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 589 transitions, 11905 flow [2021-06-10 23:59:20,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-10 23:59:20,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-06-10 23:59:20,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1637 transitions. [2021-06-10 23:59:20,695 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8916122004357299 [2021-06-10 23:59:20,695 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1637 transitions. [2021-06-10 23:59:20,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1637 transitions. [2021-06-10 23:59:20,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 23:59:20,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1637 transitions. [2021-06-10 23:59:20,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 136.41666666666666) internal successors, (1637), 12 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:59:20,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 153.0) internal successors, (1989), 13 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:59:20,700 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 153.0) internal successors, (1989), 13 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:59:20,700 INFO L185 Difference]: Start difference. First operand has 191 places, 320 transitions, 5656 flow. Second operand 12 states and 1637 transitions. [2021-06-10 23:59:20,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 589 transitions, 11905 flow [2021-06-10 23:59:30,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 589 transitions, 11734 flow, removed 68 selfloop flow, removed 1 redundant places. [2021-06-10 23:59:30,438 INFO L241 Difference]: Finished difference. Result has 211 places, 464 transitions, 9496 flow [2021-06-10 23:59:30,438 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=5540, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9496, PETRI_PLACES=211, PETRI_TRANSITIONS=464} [2021-06-10 23:59:30,438 INFO L343 CegarLoopForPetriNet]: 62 programPoint places, 149 predicate places. [2021-06-10 23:59:30,439 INFO L480 AbstractCegarLoop]: Abstraction has has 211 places, 464 transitions, 9496 flow [2021-06-10 23:59:30,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:59:30,439 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:59:30,439 INFO L263 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, 1, 1, 1, 1, 1, 1] [2021-06-10 23:59:30,439 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-10 23:59:30,439 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_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]=== [2021-06-10 23:59:30,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:59:30,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1828638614, now seen corresponding path program 9 times [2021-06-10 23:59:30,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:59:30,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66204430] [2021-06-10 23:59:30,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:59:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:59:30,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:59:30,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:59:30,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:59:30,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 23:59:30,474 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 23:59:30,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 23:59:30,482 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-10 23:59:30,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 23:59:30,493 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-10 23:59:30,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-10 23:59:30,509 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-06-10 23:59:30,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-06-10 23:59:30,544 INFO L142 QuantifierPusher]: treesize reduction 27, result has 64.5 percent of original size [2021-06-10 23:59:30,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-06-10 23:59:30,587 INFO L142 QuantifierPusher]: treesize reduction 36, result has 61.3 percent of original size [2021-06-10 23:59:30,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-06-10 23:59:30,643 INFO L142 QuantifierPusher]: treesize reduction 45, result has 59.1 percent of original size [2021-06-10 23:59:30,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-06-10 23:59:30,703 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-06-10 23:59:30,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-06-10 23:59:30,750 INFO L142 QuantifierPusher]: treesize reduction 81, result has 47.4 percent of original size [2021-06-10 23:59:30,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-06-10 23:59:30,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:59:30,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66204430] [2021-06-10 23:59:30,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:59:30,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-10 23:59:30,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661968283] [2021-06-10 23:59:30,785 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-10 23:59:30,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:59:30,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-10 23:59:30,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-06-10 23:59:30,787 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 153 [2021-06-10 23:59:30,787 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 464 transitions, 9496 flow. Second operand has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:59:30,787 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:59:30,788 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 153 [2021-06-10 23:59:30,788 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:00:10,307 INFO L129 PetriNetUnfolder]: 50796/124109 cut-off events. [2021-06-11 00:00:10,316 INFO L130 PetriNetUnfolder]: For 2577699/2678527 co-relation queries the response was YES. [2021-06-11 00:00:14,460 INFO L84 FinitePrefix]: Finished finitePrefix Result has 774305 conditions, 124109 events. 50796/124109 cut-off events. For 2577699/2678527 co-relation queries the response was YES. Maximal size of possible extension queue 13413. Compared 1873139 event pairs, 15999 based on Foata normal form. 13/122205 useless extension candidates. Maximal degree in co-relation 774215. Up to 35579 conditions per place. [2021-06-11 00:00:15,387 INFO L132 encePairwiseOnDemand]: 142/153 looper letters, 396 selfloop transitions, 281 changer transitions 0/699 dead transitions. [2021-06-11 00:00:15,387 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 699 transitions, 16179 flow [2021-06-11 00:00:15,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-11 00:00:15,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-06-11 00:00:15,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1637 transitions. [2021-06-11 00:00:15,407 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8916122004357299 [2021-06-11 00:00:15,407 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1637 transitions. [2021-06-11 00:00:15,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1637 transitions. [2021-06-11 00:00:15,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:00:15,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1637 transitions. [2021-06-11 00:00:15,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 136.41666666666666) internal successors, (1637), 12 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 00:00:15,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 153.0) internal successors, (1989), 13 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 00:00:15,412 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 153.0) internal successors, (1989), 13 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 00:00:15,412 INFO L185 Difference]: Start difference. First operand has 211 places, 464 transitions, 9496 flow. Second operand 12 states and 1637 transitions. [2021-06-11 00:00:15,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 699 transitions, 16179 flow [2021-06-11 00:00:37,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 699 transitions, 16012 flow, removed 53 selfloop flow, removed 1 redundant places. [2021-06-11 00:00:37,218 INFO L241 Difference]: Finished difference. Result has 231 places, 641 transitions, 15002 flow [2021-06-11 00:00:37,219 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=9338, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15002, PETRI_PLACES=231, PETRI_TRANSITIONS=641} [2021-06-11 00:00:37,219 INFO L343 CegarLoopForPetriNet]: 62 programPoint places, 169 predicate places. [2021-06-11 00:00:37,219 INFO L480 AbstractCegarLoop]: Abstraction has has 231 places, 641 transitions, 15002 flow [2021-06-11 00:00:37,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 00:00:37,219 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:00:37,220 INFO L263 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, 1, 1, 1, 1, 1, 1] [2021-06-11 00:00:37,220 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-11 00:00:37,220 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_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]=== [2021-06-11 00:00:37,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:00:37,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1753095926, now seen corresponding path program 1 times [2021-06-11 00:00:37,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:00:37,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386723229] [2021-06-11 00:00:37,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:00:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:00:37,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:00:37,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:00:37,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:00:37,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 00:00:37,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:00:37,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:00:37,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:00:37,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386723229] [2021-06-11 00:00:37,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:00:37,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 00:00:37,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102388475] [2021-06-11 00:00:37,231 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 00:00:37,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:00:37,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 00:00:37,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 00:00:37,232 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 153 [2021-06-11 00:00:37,232 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 641 transitions, 15002 flow. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 00:00:37,232 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:00:37,232 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 153 [2021-06-11 00:00:37,232 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:00:43,720 INFO L129 PetriNetUnfolder]: 0/17373 cut-off events. [2021-06-11 00:00:43,721 INFO L130 PetriNetUnfolder]: For 217689/227657 co-relation queries the response was YES. [2021-06-11 00:00:43,721 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68265 conditions, 17373 events. 0/17373 cut-off events. For 217689/227657 co-relation queries the response was YES. Maximal size of possible extension queue 1560. Compared 344153 event pairs, 0 based on Foata normal form. 562/16615 useless extension candidates. Maximal degree in co-relation 0. Up to 1516 conditions per place. [2021-06-11 00:00:43,747 INFO L132 encePairwiseOnDemand]: 151/153 looper letters, 1 selfloop transitions, 1 changer transitions 10/639 dead transitions. [2021-06-11 00:00:43,748 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 639 transitions, 15000 flow [2021-06-11 00:00:43,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 00:00:43,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 00:00:43,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 429 transitions. [2021-06-11 00:00:43,749 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.934640522875817 [2021-06-11 00:00:43,749 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 429 transitions. [2021-06-11 00:00:43,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 429 transitions. [2021-06-11 00:00:43,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:00:43,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 429 transitions. [2021-06-11 00:00:43,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 00:00:43,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 00:00:43,751 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 00:00:43,751 INFO L185 Difference]: Start difference. First operand has 231 places, 641 transitions, 15002 flow. Second operand 3 states and 429 transitions. [2021-06-11 00:00:43,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 639 transitions, 15000 flow [2021-06-11 00:00:46,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 639 transitions, 14760 flow, removed 68 selfloop flow, removed 1 redundant places. [2021-06-11 00:00:46,659 INFO L241 Difference]: Finished difference. Result has 232 places, 629 transitions, 14668 flow [2021-06-11 00:00:46,660 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=14756, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=638, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=14668, PETRI_PLACES=232, PETRI_TRANSITIONS=629} [2021-06-11 00:00:46,660 INFO L343 CegarLoopForPetriNet]: 62 programPoint places, 170 predicate places. [2021-06-11 00:00:46,660 INFO L480 AbstractCegarLoop]: Abstraction has has 232 places, 629 transitions, 14668 flow [2021-06-11 00:00:46,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 00:00:46,660 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:00:46,660 INFO L263 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, 1, 1, 1, 1, 1, 1] [2021-06-11 00:00:46,660 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-11 00:00:46,660 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_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]=== [2021-06-11 00:00:46,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:00:46,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1412473266, now seen corresponding path program 10 times [2021-06-11 00:00:46,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:00:46,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855733371] [2021-06-11 00:00:46,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:00:46,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:00:46,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:00:46,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:00:46,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:00:46,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:00:46,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:00:46,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 00:00:46,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:00:46,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-11 00:00:46,712 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-06-11 00:00:46,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-06-11 00:00:46,728 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-06-11 00:00:46,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-06-11 00:00:46,752 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-06-11 00:00:46,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-06-11 00:00:46,780 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-11 00:00:46,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-11 00:00:46,814 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-11 00:00:46,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-11 00:00:46,853 INFO L142 QuantifierPusher]: treesize reduction 72, result has 49.7 percent of original size [2021-06-11 00:00:46,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-06-11 00:00:46,903 INFO L142 QuantifierPusher]: treesize reduction 81, result has 47.4 percent of original size [2021-06-11 00:00:46,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-06-11 00:00:46,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:00:46,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855733371] [2021-06-11 00:00:46,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:00:46,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-11 00:00:46,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353219091] [2021-06-11 00:00:46,947 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-11 00:00:46,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:00:46,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-11 00:00:46,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-06-11 00:00:46,949 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 153 [2021-06-11 00:00:46,949 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 629 transitions, 14668 flow. Second operand has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 00:00:46,949 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:00:46,950 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 153 [2021-06-11 00:00:46,950 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:01:34,237 INFO L129 PetriNetUnfolder]: 48319/116405 cut-off events. [2021-06-11 00:01:34,237 INFO L130 PetriNetUnfolder]: For 3432735/3563929 co-relation queries the response was YES. [2021-06-11 00:01:37,363 INFO L84 FinitePrefix]: Finished finitePrefix Result has 911471 conditions, 116405 events. 48319/116405 cut-off events. For 3432735/3563929 co-relation queries the response was YES. Maximal size of possible extension queue 11691. Compared 1707441 event pairs, 21030 based on Foata normal form. 23/114365 useless extension candidates. Maximal degree in co-relation 911373. Up to 40765 conditions per place. [2021-06-11 00:01:38,074 INFO L132 encePairwiseOnDemand]: 142/153 looper letters, 528 selfloop transitions, 389 changer transitions 1/938 dead transitions. [2021-06-11 00:01:38,074 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 938 transitions, 22046 flow [2021-06-11 00:01:38,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-11 00:01:38,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-06-11 00:01:38,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1637 transitions. [2021-06-11 00:01:38,078 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8916122004357299 [2021-06-11 00:01:38,078 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1637 transitions. [2021-06-11 00:01:38,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1637 transitions. [2021-06-11 00:01:38,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:01:38,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1637 transitions. [2021-06-11 00:01:38,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 136.41666666666666) internal successors, (1637), 12 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 00:01:38,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 153.0) internal successors, (1989), 13 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 00:01:38,082 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 153.0) internal successors, (1989), 13 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 00:01:38,082 INFO L185 Difference]: Start difference. First operand has 232 places, 629 transitions, 14668 flow. Second operand 12 states and 1637 transitions. [2021-06-11 00:01:38,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 938 transitions, 22046 flow [2021-06-11 00:02:05,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 938 transitions, 21866 flow, removed 89 selfloop flow, removed 11 redundant places. [2021-06-11 00:02:05,473 INFO L241 Difference]: Finished difference. Result has 233 places, 690 transitions, 17128 flow [2021-06-11 00:02:05,474 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=14646, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=328, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=17128, PETRI_PLACES=233, PETRI_TRANSITIONS=690} [2021-06-11 00:02:05,474 INFO L343 CegarLoopForPetriNet]: 62 programPoint places, 171 predicate places. [2021-06-11 00:02:05,474 INFO L480 AbstractCegarLoop]: Abstraction has has 233 places, 690 transitions, 17128 flow [2021-06-11 00:02:05,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 00:02:05,474 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:02:05,475 INFO L263 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, 1, 1, 1, 1, 1, 1] [2021-06-11 00:02:05,475 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-11 00:02:05,475 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_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]=== [2021-06-11 00:02:05,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:02:05,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1274311896, now seen corresponding path program 11 times [2021-06-11 00:02:05,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:02:05,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839632460] [2021-06-11 00:02:05,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:02:05,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:02:05,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:02:05,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:02:05,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:02:05,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:02:05,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:02:05,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 00:02:05,513 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:02:05,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:02:05,524 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:02:05,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:02:05,540 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:02:05,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:02:05,562 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:02:05,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:02:05,588 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-11 00:02:05,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-11 00:02:05,619 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-06-11 00:02:05,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-11 00:02:05,652 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-06-11 00:02:05,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-06-11 00:02:05,713 INFO L142 QuantifierPusher]: treesize reduction 81, result has 47.4 percent of original size [2021-06-11 00:02:05,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-06-11 00:02:05,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:02:05,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839632460] [2021-06-11 00:02:05,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:02:05,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-11 00:02:05,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177133048] [2021-06-11 00:02:05,750 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-11 00:02:05,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:02:05,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-11 00:02:05,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-06-11 00:02:05,752 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 153 [2021-06-11 00:02:05,753 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 690 transitions, 17128 flow. Second operand has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 00:02:05,753 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:02:05,753 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 153 [2021-06-11 00:02:05,753 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 00:03:03,038 INFO L129 PetriNetUnfolder]: 50030/128572 cut-off events. [2021-06-11 00:03:03,038 INFO L130 PetriNetUnfolder]: For 4150888/4282403 co-relation queries the response was YES. [2021-06-11 00:03:06,216 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1008886 conditions, 128572 events. 50030/128572 cut-off events. For 4150888/4282403 co-relation queries the response was YES. Maximal size of possible extension queue 12890. Compared 1973305 event pairs, 22371 based on Foata normal form. 25/126745 useless extension candidates. Maximal degree in co-relation 1008788. Up to 41680 conditions per place. [2021-06-11 00:03:06,988 INFO L132 encePairwiseOnDemand]: 142/153 looper letters, 285 selfloop transitions, 547 changer transitions 2/854 dead transitions. [2021-06-11 00:03:06,989 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 854 transitions, 22040 flow [2021-06-11 00:03:06,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-11 00:03:06,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-06-11 00:03:06,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1637 transitions. [2021-06-11 00:03:06,990 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8916122004357299 [2021-06-11 00:03:06,990 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1637 transitions. [2021-06-11 00:03:06,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1637 transitions. [2021-06-11 00:03:07,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 00:03:07,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1637 transitions. [2021-06-11 00:03:07,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 136.41666666666666) internal successors, (1637), 12 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 00:03:07,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 153.0) internal successors, (1989), 13 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 00:03:07,103 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 153.0) internal successors, (1989), 13 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 00:03:07,103 INFO L185 Difference]: Start difference. First operand has 233 places, 690 transitions, 17128 flow. Second operand 12 states and 1637 transitions. [2021-06-11 00:03:07,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 854 transitions, 22040 flow [2021-06-11 00:03:49,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 854 transitions, 21164 flow, removed 278 selfloop flow, removed 2 redundant places. [2021-06-11 00:03:49,229 INFO L241 Difference]: Finished difference. Result has 251 places, 745 transitions, 19544 flow [2021-06-11 00:03:49,230 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=16516, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=690, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=492, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=19544, PETRI_PLACES=251, PETRI_TRANSITIONS=745} [2021-06-11 00:03:49,230 INFO L343 CegarLoopForPetriNet]: 62 programPoint places, 189 predicate places. [2021-06-11 00:03:49,230 INFO L480 AbstractCegarLoop]: Abstraction has has 251 places, 745 transitions, 19544 flow [2021-06-11 00:03:49,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 00:03:49,230 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 00:03:49,231 INFO L263 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, 1, 1, 1, 1, 1, 1] [2021-06-11 00:03:49,231 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-11 00:03:49,231 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr8INUSE_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]=== [2021-06-11 00:03:49,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 00:03:49,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1855664006, now seen corresponding path program 12 times [2021-06-11 00:03:49,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 00:03:49,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532844324] [2021-06-11 00:03:49,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 00:03:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 00:03:49,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:03:49,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 00:03:49,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:03:49,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-11 00:03:49,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 00:03:49,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 00:03:49,269 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-06-11 00:03:49,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 00:03:49,280 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-06-11 00:03:49,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 00:03:49,297 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-06-11 00:03:49,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-06-11 00:03:49,320 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-06-11 00:03:49,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-06-11 00:03:49,349 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-06-11 00:03:49,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-06-11 00:03:49,383 INFO L142 QuantifierPusher]: treesize reduction 63, result has 50.0 percent of original size [2021-06-11 00:03:49,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-06-11 00:03:49,427 INFO L142 QuantifierPusher]: treesize reduction 72, result has 49.7 percent of original size [2021-06-11 00:03:49,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-06-11 00:03:49,465 INFO L142 QuantifierPusher]: treesize reduction 81, result has 47.4 percent of original size [2021-06-11 00:03:49,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-06-11 00:03:49,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 00:03:49,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532844324] [2021-06-11 00:03:49,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 00:03:49,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-06-11 00:03:49,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012119858] [2021-06-11 00:03:49,501 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-11 00:03:49,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 00:03:49,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-11 00:03:49,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-06-11 00:03:49,502 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 153 [2021-06-11 00:03:49,503 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 745 transitions, 19544 flow. Second operand has 12 states, 12 states have (on average 131.91666666666666) internal successors, (1583), 12 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-11 00:03:49,503 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 00:03:49,503 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 153 [2021-06-11 00:03:49,503 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand