/usr/bin/java -Xmx8000000000 -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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_14.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-12 21:51:35,421 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-12 21:51:35,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-12 21:51:35,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-12 21:51:35,464 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-12 21:51:35,467 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-12 21:51:35,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-12 21:51:35,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-12 21:51:35,478 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-12 21:51:35,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-12 21:51:35,484 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-12 21:51:35,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-12 21:51:35,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-12 21:51:35,487 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-12 21:51:35,488 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-12 21:51:35,489 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-12 21:51:35,492 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-12 21:51:35,492 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-12 21:51:35,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-12 21:51:35,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-12 21:51:35,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-12 21:51:35,508 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-12 21:51:35,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-12 21:51:35,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-12 21:51:35,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-12 21:51:35,521 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-12 21:51:35,521 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-12 21:51:35,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-12 21:51:35,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-12 21:51:35,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-12 21:51:35,523 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-12 21:51:35,524 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-12 21:51:35,525 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-12 21:51:35,526 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-12 21:51:35,527 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-12 21:51:35,527 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-12 21:51:35,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-12 21:51:35,527 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-12 21:51:35,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-12 21:51:35,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-12 21:51:35,529 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-12 21:51:35,530 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-NoLbe.epf [2021-08-12 21:51:35,568 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-12 21:51:35,568 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-12 21:51:35,571 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-12 21:51:35,572 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-12 21:51:35,572 INFO L138 SettingsManager]: * Use SBE=true [2021-08-12 21:51:35,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-12 21:51:35,572 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-12 21:51:35,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-12 21:51:35,572 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-12 21:51:35,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-12 21:51:35,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-12 21:51:35,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-12 21:51:35,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-12 21:51:35,574 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-12 21:51:35,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-12 21:51:35,574 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-12 21:51:35,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-12 21:51:35,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-12 21:51:35,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-12 21:51:35,575 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-12 21:51:35,575 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-12 21:51:35,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-12 21:51:35,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-12 21:51:35,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-12 21:51:35,576 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-12 21:51:35,576 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-12 21:51:35,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-12 21:51:35,576 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-12 21:51:35,576 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-12 21:51:35,576 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-12 21:51:35,576 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-12 21:51:35,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-12 21:51:35,928 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-12 21:51:35,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-12 21:51:35,931 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-12 21:51:35,936 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-12 21:51:35,937 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_14.bpl [2021-08-12 21:51:35,937 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_14.bpl' [2021-08-12 21:51:35,976 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-12 21:51:35,978 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-12 21:51:35,979 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-12 21:51:35,979 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-12 21:51:35,979 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-12 21:51:35,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:51:35" (1/1) ... [2021-08-12 21:51:35,996 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:51:35" (1/1) ... [2021-08-12 21:51:36,004 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-12 21:51:36,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-12 21:51:36,006 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-12 21:51:36,006 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-12 21:51:36,013 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:51:35" (1/1) ... [2021-08-12 21:51:36,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:51:35" (1/1) ... [2021-08-12 21:51:36,015 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:51:35" (1/1) ... [2021-08-12 21:51:36,016 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:51:35" (1/1) ... [2021-08-12 21:51:36,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:51:35" (1/1) ... [2021-08-12 21:51:36,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:51:35" (1/1) ... [2021-08-12 21:51:36,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:51:35" (1/1) ... [2021-08-12 21:51:36,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-12 21:51:36,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-12 21:51:36,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-12 21:51:36,029 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-12 21:51:36,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:51:35" (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 [2021-08-12 21:51:36,105 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-08-12 21:51:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-08-12 21:51:36,105 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-08-12 21:51:36,105 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-08-12 21:51:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-08-12 21:51:36,106 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-08-12 21:51:36,106 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-08-12 21:51:36,106 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-08-12 21:51:36,106 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-08-12 21:51:36,106 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-08-12 21:51:36,106 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-08-12 21:51:36,106 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-08-12 21:51:36,107 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-08-12 21:51:36,107 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-08-12 21:51:36,107 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-08-12 21:51:36,107 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_9 given in one single declaration [2021-08-12 21:51:36,107 INFO L130 BoogieDeclarations]: Found specification of procedure set_9 [2021-08-12 21:51:36,107 INFO L138 BoogieDeclarations]: Found implementation of procedure set_9 [2021-08-12 21:51:36,107 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-12 21:51:36,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-12 21:51:36,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-12 21:51:36,108 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_12 given in one single declaration [2021-08-12 21:51:36,108 INFO L130 BoogieDeclarations]: Found specification of procedure set_12 [2021-08-12 21:51:36,108 INFO L138 BoogieDeclarations]: Found implementation of procedure set_12 [2021-08-12 21:51:36,108 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-08-12 21:51:36,108 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-08-12 21:51:36,108 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-08-12 21:51:36,109 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_13 given in one single declaration [2021-08-12 21:51:36,109 INFO L130 BoogieDeclarations]: Found specification of procedure set_13 [2021-08-12 21:51:36,109 INFO L138 BoogieDeclarations]: Found implementation of procedure set_13 [2021-08-12 21:51:36,109 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-08-12 21:51:36,109 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-08-12 21:51:36,109 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-08-12 21:51:36,109 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_10 given in one single declaration [2021-08-12 21:51:36,109 INFO L130 BoogieDeclarations]: Found specification of procedure set_10 [2021-08-12 21:51:36,110 INFO L138 BoogieDeclarations]: Found implementation of procedure set_10 [2021-08-12 21:51:36,110 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2021-08-12 21:51:36,110 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2021-08-12 21:51:36,110 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2021-08-12 21:51:36,110 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_11 given in one single declaration [2021-08-12 21:51:36,110 INFO L130 BoogieDeclarations]: Found specification of procedure set_11 [2021-08-12 21:51:36,111 INFO L138 BoogieDeclarations]: Found implementation of procedure set_11 [2021-08-12 21:51:36,111 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2021-08-12 21:51:36,111 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2021-08-12 21:51:36,111 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2021-08-12 21:51:36,112 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-12 21:51:36,367 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-12 21:51:36,368 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-12 21:51:36,369 INFO L202 PluginConnector]: Adding new model example_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 09:51:36 BoogieIcfgContainer [2021-08-12 21:51:36,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-12 21:51:36,371 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-12 21:51:36,371 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-12 21:51:36,374 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-12 21:51:36,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 09:51:35" (1/2) ... [2021-08-12 21:51:36,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667a15ce and model type example_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.08 09:51:36, skipping insertion in model container [2021-08-12 21:51:36,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 09:51:36" (2/2) ... [2021-08-12 21:51:36,391 INFO L111 eAbstractionObserver]: Analyzing ICFG example_14.bpl [2021-08-12 21:51:36,396 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-12 21:51:36,397 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-12 21:51:36,398 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-12 21:51:36,827 INFO L149 ThreadInstanceAdder]: Constructed 196 joinOtherThreadTransitions. [2021-08-12 21:51:36,852 INFO L255 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2021-08-12 21:51:36,878 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-12 21:51:36,878 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-12 21:51:36,878 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-12 21:51:36,878 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-12 21:51:36,879 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-12 21:51:36,879 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-12 21:51:36,879 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-12 21:51:36,879 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-12 21:51:36,897 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 116 places, 255 transitions, 1168 flow [2021-08-12 21:51:46,121 INFO L129 PetriNetUnfolder]: 98305/114733 cut-off events. [2021-08-12 21:51:46,121 INFO L130 PetriNetUnfolder]: For 114688/114688 co-relation queries the response was YES. [2021-08-12 21:51:47,071 INFO L84 FinitePrefix]: Finished finitePrefix Result has 229464 conditions, 114733 events. 98305/114733 cut-off events. For 114688/114688 co-relation queries the response was YES. Maximal size of possible extension queue 3628. Compared 465637 event pairs, 0 based on Foata normal form. 0/114732 useless extension candidates. Maximal degree in co-relation 106563. Up to 24024 conditions per place. [2021-08-12 21:51:47,072 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 255 transitions, 1168 flow [2021-08-12 21:51:47,988 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 239 transitions, 1108 flow [2021-08-12 21:51:55,722 INFO L129 PetriNetUnfolder]: 98305/114730 cut-off events. [2021-08-12 21:51:55,722 INFO L130 PetriNetUnfolder]: For 114688/114688 co-relation queries the response was YES. [2021-08-12 21:51:55,722 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:51:55,723 INFO L266 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, 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] [2021-08-12 21:51:55,723 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-08-12 21:51:55,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:51:55,728 INFO L82 PathProgramCache]: Analyzing trace with hash 927623714, now seen corresponding path program 1 times [2021-08-12 21:51:55,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:51:55,736 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004004935] [2021-08-12 21:51:55,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:51:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:51:55,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:51:55,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:51:55,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:51:55,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 21:51:55,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:51:55,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:51:55,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 21:51:55,924 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:51:55,925 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004004935] [2021-08-12 21:51:55,925 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004004935] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:51:55,925 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:51:55,926 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 21:51:55,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305244741] [2021-08-12 21:51:55,934 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 21:51:55,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:51:55,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 21:51:55,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 21:51:55,958 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 255 [2021-08-12 21:51:55,966 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 239 transitions, 1108 flow. Second operand has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 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) [2021-08-12 21:51:55,966 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:51:55,966 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 255 [2021-08-12 21:51:55,967 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:52:05,094 INFO L129 PetriNetUnfolder]: 94418/110466 cut-off events. [2021-08-12 21:52:05,094 INFO L130 PetriNetUnfolder]: For 127186/127186 co-relation queries the response was YES. [2021-08-12 21:52:05,961 INFO L84 FinitePrefix]: Finished finitePrefix Result has 228748 conditions, 110466 events. 94418/110466 cut-off events. For 127186/127186 co-relation queries the response was YES. Maximal size of possible extension queue 3628. Compared 539528 event pairs, 0 based on Foata normal form. 378/110844 useless extension candidates. Maximal degree in co-relation 108774. Up to 24024 conditions per place. [2021-08-12 21:52:06,705 INFO L132 encePairwiseOnDemand]: 250/255 looper letters, 10 selfloop transitions, 1 changer transitions 0/235 dead transitions. [2021-08-12 21:52:06,705 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 235 transitions, 1110 flow [2021-08-12 21:52:06,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 21:52:06,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-12 21:52:06,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 735 transitions. [2021-08-12 21:52:06,718 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9607843137254902 [2021-08-12 21:52:06,719 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 735 transitions. [2021-08-12 21:52:06,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 735 transitions. [2021-08-12 21:52:06,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:52:06,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 735 transitions. [2021-08-12 21:52:06,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 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) [2021-08-12 21:52:06,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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) [2021-08-12 21:52:06,737 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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) [2021-08-12 21:52:06,737 INFO L348 CegarLoopForPetriNet]: 100 programPoint places, 2 predicate places. [2021-08-12 21:52:06,738 INFO L482 AbstractCegarLoop]: Abstraction has has 102 places, 235 transitions, 1110 flow [2021-08-12 21:52:06,738 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 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) [2021-08-12 21:52:06,738 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:52:06,739 INFO L266 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, 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] [2021-08-12 21:52:06,739 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-12 21:52:06,739 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-08-12 21:52:06,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:52:06,740 INFO L82 PathProgramCache]: Analyzing trace with hash 265140278, now seen corresponding path program 1 times [2021-08-12 21:52:06,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:52:06,741 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124221562] [2021-08-12 21:52:06,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:52:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:52:06,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:06,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:52:06,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:06,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 21:52:06,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:06,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:52:06,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 21:52:06,776 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:52:06,777 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124221562] [2021-08-12 21:52:06,777 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124221562] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:52:06,777 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:52:06,777 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 21:52:06,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397529128] [2021-08-12 21:52:06,779 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 21:52:06,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:52:06,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 21:52:06,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 21:52:06,782 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 255 [2021-08-12 21:52:06,783 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 235 transitions, 1110 flow. Second operand has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 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) [2021-08-12 21:52:06,783 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:52:06,783 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 255 [2021-08-12 21:52:06,784 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:52:10,007 INFO L129 PetriNetUnfolder]: 43300/51613 cut-off events. [2021-08-12 21:52:10,007 INFO L130 PetriNetUnfolder]: For 82625/82625 co-relation queries the response was YES. [2021-08-12 21:52:10,470 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107484 conditions, 51613 events. 43300/51613 cut-off events. For 82625/82625 co-relation queries the response was YES. Maximal size of possible extension queue 1912. Compared 245129 event pairs, 0 based on Foata normal form. 7515/59128 useless extension candidates. Maximal degree in co-relation 104164. Up to 12012 conditions per place. [2021-08-12 21:52:10,923 INFO L132 encePairwiseOnDemand]: 244/255 looper letters, 4 selfloop transitions, 1 changer transitions 0/225 dead transitions. [2021-08-12 21:52:10,923 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 225 transitions, 1070 flow [2021-08-12 21:52:10,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 21:52:10,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-12 21:52:10,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 735 transitions. [2021-08-12 21:52:10,926 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9607843137254902 [2021-08-12 21:52:10,926 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 735 transitions. [2021-08-12 21:52:10,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 735 transitions. [2021-08-12 21:52:10,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:52:10,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 735 transitions. [2021-08-12 21:52:10,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 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) [2021-08-12 21:52:10,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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) [2021-08-12 21:52:10,932 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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) [2021-08-12 21:52:10,932 INFO L348 CegarLoopForPetriNet]: 100 programPoint places, 4 predicate places. [2021-08-12 21:52:10,932 INFO L482 AbstractCegarLoop]: Abstraction has has 104 places, 225 transitions, 1070 flow [2021-08-12 21:52:10,933 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 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) [2021-08-12 21:52:10,933 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:52:10,933 INFO L266 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, 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] [2021-08-12 21:52:10,933 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-12 21:52:10,934 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-08-12 21:52:10,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:52:10,934 INFO L82 PathProgramCache]: Analyzing trace with hash 46224474, now seen corresponding path program 1 times [2021-08-12 21:52:10,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:52:10,934 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172813577] [2021-08-12 21:52:10,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:52:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:52:10,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:10,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:52:10,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:10,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 21:52:10,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:10,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:52:10,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 21:52:10,976 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:52:10,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172813577] [2021-08-12 21:52:10,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172813577] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:52:10,977 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:52:10,977 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 21:52:10,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063230380] [2021-08-12 21:52:10,977 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 21:52:10,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:52:10,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 21:52:10,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 21:52:10,979 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 255 [2021-08-12 21:52:10,980 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 225 transitions, 1070 flow. Second operand has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 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) [2021-08-12 21:52:10,980 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:52:10,980 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 255 [2021-08-12 21:52:10,980 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:52:12,521 INFO L129 PetriNetUnfolder]: 22356/27434 cut-off events. [2021-08-12 21:52:12,521 INFO L130 PetriNetUnfolder]: For 43360/43360 co-relation queries the response was YES. [2021-08-12 21:52:12,887 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58252 conditions, 27434 events. 22356/27434 cut-off events. For 43360/43360 co-relation queries the response was YES. Maximal size of possible extension queue 988. Compared 130788 event pairs, 0 based on Foata normal form. 3070/30504 useless extension candidates. Maximal degree in co-relation 54851. Up to 5544 conditions per place. [2021-08-12 21:52:13,060 INFO L132 encePairwiseOnDemand]: 246/255 looper letters, 6 selfloop transitions, 1 changer transitions 0/217 dead transitions. [2021-08-12 21:52:13,060 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 217 transitions, 1044 flow [2021-08-12 21:52:13,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 21:52:13,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-12 21:52:13,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 735 transitions. [2021-08-12 21:52:13,063 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9607843137254902 [2021-08-12 21:52:13,063 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 735 transitions. [2021-08-12 21:52:13,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 735 transitions. [2021-08-12 21:52:13,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:52:13,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 735 transitions. [2021-08-12 21:52:13,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 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) [2021-08-12 21:52:13,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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) [2021-08-12 21:52:13,067 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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) [2021-08-12 21:52:13,067 INFO L348 CegarLoopForPetriNet]: 100 programPoint places, 6 predicate places. [2021-08-12 21:52:13,067 INFO L482 AbstractCegarLoop]: Abstraction has has 106 places, 217 transitions, 1044 flow [2021-08-12 21:52:13,068 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 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) [2021-08-12 21:52:13,068 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:52:13,068 INFO L266 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, 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] [2021-08-12 21:52:13,068 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-12 21:52:13,068 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-08-12 21:52:13,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:52:13,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1758934324, now seen corresponding path program 1 times [2021-08-12 21:52:13,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:52:13,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701942004] [2021-08-12 21:52:13,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:52:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:52:13,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:13,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:52:13,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:13,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 21:52:13,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:13,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:52:13,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 21:52:13,135 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:52:13,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701942004] [2021-08-12 21:52:13,135 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701942004] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:52:13,135 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:52:13,135 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 21:52:13,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735650780] [2021-08-12 21:52:13,136 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 21:52:13,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:52:13,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 21:52:13,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 21:52:13,137 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 255 [2021-08-12 21:52:13,138 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 217 transitions, 1044 flow. Second operand has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 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) [2021-08-12 21:52:13,138 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:52:13,138 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 255 [2021-08-12 21:52:13,138 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:52:14,596 INFO L129 PetriNetUnfolder]: 18746/23318 cut-off events. [2021-08-12 21:52:14,597 INFO L130 PetriNetUnfolder]: For 34127/34127 co-relation queries the response was YES. [2021-08-12 21:52:14,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51489 conditions, 23318 events. 18746/23318 cut-off events. For 34127/34127 co-relation queries the response was YES. Maximal size of possible extension queue 988. Compared 114395 event pairs, 0 based on Foata normal form. 386/23704 useless extension candidates. Maximal degree in co-relation 48007. Up to 5544 conditions per place. [2021-08-12 21:52:14,862 INFO L132 encePairwiseOnDemand]: 249/255 looper letters, 9 selfloop transitions, 1 changer transitions 0/212 dead transitions. [2021-08-12 21:52:14,863 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 212 transitions, 1039 flow [2021-08-12 21:52:14,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 21:52:14,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-12 21:52:14,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 735 transitions. [2021-08-12 21:52:14,865 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9607843137254902 [2021-08-12 21:52:14,865 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 735 transitions. [2021-08-12 21:52:14,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 735 transitions. [2021-08-12 21:52:14,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:52:14,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 735 transitions. [2021-08-12 21:52:14,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 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) [2021-08-12 21:52:14,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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) [2021-08-12 21:52:14,869 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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) [2021-08-12 21:52:14,870 INFO L348 CegarLoopForPetriNet]: 100 programPoint places, 8 predicate places. [2021-08-12 21:52:14,870 INFO L482 AbstractCegarLoop]: Abstraction has has 108 places, 212 transitions, 1039 flow [2021-08-12 21:52:14,870 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 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) [2021-08-12 21:52:14,870 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:52:14,871 INFO L266 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, 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] [2021-08-12 21:52:14,871 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-12 21:52:14,871 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-08-12 21:52:14,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:52:14,871 INFO L82 PathProgramCache]: Analyzing trace with hash -958813692, now seen corresponding path program 1 times [2021-08-12 21:52:14,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:52:14,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274667290] [2021-08-12 21:52:14,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:52:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:52:14,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:14,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:52:14,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:14,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 21:52:14,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:14,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:52:14,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 21:52:14,897 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:52:14,897 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274667290] [2021-08-12 21:52:14,897 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274667290] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:52:14,897 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:52:14,897 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 21:52:14,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207081458] [2021-08-12 21:52:14,898 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 21:52:14,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:52:14,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 21:52:14,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 21:52:14,899 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 255 [2021-08-12 21:52:14,900 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 212 transitions, 1039 flow. Second operand has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 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) [2021-08-12 21:52:14,900 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:52:14,901 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 255 [2021-08-12 21:52:14,901 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:52:16,411 INFO L129 PetriNetUnfolder]: 18737/23308 cut-off events. [2021-08-12 21:52:16,412 INFO L130 PetriNetUnfolder]: For 36647/36647 co-relation queries the response was YES. [2021-08-12 21:52:16,712 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53313 conditions, 23308 events. 18737/23308 cut-off events. For 36647/36647 co-relation queries the response was YES. Maximal size of possible extension queue 988. Compared 113977 event pairs, 0 based on Foata normal form. 1/23309 useless extension candidates. Maximal degree in co-relation 49750. Up to 5544 conditions per place. [2021-08-12 21:52:16,811 INFO L132 encePairwiseOnDemand]: 253/255 looper letters, 13 selfloop transitions, 1 changer transitions 0/211 dead transitions. [2021-08-12 21:52:16,811 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 211 transitions, 1062 flow [2021-08-12 21:52:16,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 21:52:16,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-12 21:52:16,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 735 transitions. [2021-08-12 21:52:16,813 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9607843137254902 [2021-08-12 21:52:16,813 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 735 transitions. [2021-08-12 21:52:16,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 735 transitions. [2021-08-12 21:52:16,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:52:16,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 735 transitions. [2021-08-12 21:52:16,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 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) [2021-08-12 21:52:16,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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) [2021-08-12 21:52:16,818 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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) [2021-08-12 21:52:16,818 INFO L348 CegarLoopForPetriNet]: 100 programPoint places, 10 predicate places. [2021-08-12 21:52:16,818 INFO L482 AbstractCegarLoop]: Abstraction has has 110 places, 211 transitions, 1062 flow [2021-08-12 21:52:16,819 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 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) [2021-08-12 21:52:16,819 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:52:16,819 INFO L266 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, 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] [2021-08-12 21:52:16,819 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-12 21:52:16,819 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-08-12 21:52:16,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:52:16,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1176074936, now seen corresponding path program 1 times [2021-08-12 21:52:16,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:52:16,820 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415386567] [2021-08-12 21:52:16,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:52:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:52:16,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:16,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:52:16,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:16,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 21:52:16,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:16,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:52:16,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 21:52:16,850 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:52:16,850 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415386567] [2021-08-12 21:52:16,850 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415386567] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:52:16,850 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:52:16,850 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 21:52:16,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100242229] [2021-08-12 21:52:16,851 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 21:52:16,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:52:16,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 21:52:16,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 21:52:16,852 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 255 [2021-08-12 21:52:16,853 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 211 transitions, 1062 flow. Second operand has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 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) [2021-08-12 21:52:16,853 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:52:16,853 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 255 [2021-08-12 21:52:16,854 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:52:17,580 INFO L129 PetriNetUnfolder]: 8259/10741 cut-off events. [2021-08-12 21:52:17,580 INFO L130 PetriNetUnfolder]: For 22476/22476 co-relation queries the response was YES. [2021-08-12 21:52:17,617 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25184 conditions, 10741 events. 8259/10741 cut-off events. For 22476/22476 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 51904 event pairs, 0 based on Foata normal form. 1464/12205 useless extension candidates. Maximal degree in co-relation 21540. Up to 2310 conditions per place. [2021-08-12 21:52:17,659 INFO L132 encePairwiseOnDemand]: 245/255 looper letters, 5 selfloop transitions, 1 changer transitions 0/202 dead transitions. [2021-08-12 21:52:17,659 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 202 transitions, 1029 flow [2021-08-12 21:52:17,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 21:52:17,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-12 21:52:17,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 735 transitions. [2021-08-12 21:52:17,661 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9607843137254902 [2021-08-12 21:52:17,661 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 735 transitions. [2021-08-12 21:52:17,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 735 transitions. [2021-08-12 21:52:17,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:52:17,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 735 transitions. [2021-08-12 21:52:17,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 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) [2021-08-12 21:52:17,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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) [2021-08-12 21:52:17,665 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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) [2021-08-12 21:52:17,665 INFO L348 CegarLoopForPetriNet]: 100 programPoint places, 12 predicate places. [2021-08-12 21:52:17,665 INFO L482 AbstractCegarLoop]: Abstraction has has 112 places, 202 transitions, 1029 flow [2021-08-12 21:52:17,666 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 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) [2021-08-12 21:52:17,666 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:52:17,666 INFO L266 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, 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] [2021-08-12 21:52:17,666 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-12 21:52:17,666 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-08-12 21:52:17,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:52:17,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1014788368, now seen corresponding path program 1 times [2021-08-12 21:52:17,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:52:17,667 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696572133] [2021-08-12 21:52:17,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:52:17,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:52:17,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:17,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:52:17,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:17,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 21:52:17,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:17,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:52:17,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 21:52:17,694 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:52:17,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696572133] [2021-08-12 21:52:17,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696572133] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:52:17,694 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:52:17,694 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 21:52:17,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381900324] [2021-08-12 21:52:17,695 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 21:52:17,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:52:17,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 21:52:17,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 21:52:17,697 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 255 [2021-08-12 21:52:17,698 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 202 transitions, 1029 flow. Second operand has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 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) [2021-08-12 21:52:17,698 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:52:17,698 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 255 [2021-08-12 21:52:17,698 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:52:18,381 INFO L129 PetriNetUnfolder]: 8196/10669 cut-off events. [2021-08-12 21:52:18,381 INFO L130 PetriNetUnfolder]: For 19757/19757 co-relation queries the response was YES. [2021-08-12 21:52:18,434 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25902 conditions, 10669 events. 8196/10669 cut-off events. For 19757/19757 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 52144 event pairs, 0 based on Foata normal form. 8/10677 useless extension candidates. Maximal degree in co-relation 22177. Up to 2310 conditions per place. [2021-08-12 21:52:18,481 INFO L132 encePairwiseOnDemand]: 252/255 looper letters, 12 selfloop transitions, 1 changer transitions 0/200 dead transitions. [2021-08-12 21:52:18,481 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 200 transitions, 1045 flow [2021-08-12 21:52:18,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 21:52:18,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-12 21:52:18,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 735 transitions. [2021-08-12 21:52:18,483 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9607843137254902 [2021-08-12 21:52:18,483 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 735 transitions. [2021-08-12 21:52:18,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 735 transitions. [2021-08-12 21:52:18,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:52:18,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 735 transitions. [2021-08-12 21:52:18,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 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) [2021-08-12 21:52:18,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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) [2021-08-12 21:52:18,500 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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) [2021-08-12 21:52:18,500 INFO L348 CegarLoopForPetriNet]: 100 programPoint places, 14 predicate places. [2021-08-12 21:52:18,500 INFO L482 AbstractCegarLoop]: Abstraction has has 114 places, 200 transitions, 1045 flow [2021-08-12 21:52:18,500 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 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) [2021-08-12 21:52:18,500 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:52:18,501 INFO L266 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, 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] [2021-08-12 21:52:18,501 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-12 21:52:18,501 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-08-12 21:52:18,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:52:18,501 INFO L82 PathProgramCache]: Analyzing trace with hash 409637460, now seen corresponding path program 1 times [2021-08-12 21:52:18,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:52:18,502 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793712304] [2021-08-12 21:52:18,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:52:18,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:52:18,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:18,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:52:18,546 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:18,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 21:52:18,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:18,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:52:18,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 21:52:18,551 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:52:18,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793712304] [2021-08-12 21:52:18,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793712304] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:52:18,551 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:52:18,551 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 21:52:18,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772083136] [2021-08-12 21:52:18,552 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 21:52:18,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:52:18,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 21:52:18,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 21:52:18,553 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 255 [2021-08-12 21:52:18,554 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 200 transitions, 1045 flow. Second operand has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 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) [2021-08-12 21:52:18,554 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:52:18,554 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 255 [2021-08-12 21:52:18,554 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:52:19,253 INFO L129 PetriNetUnfolder]: 7980/10417 cut-off events. [2021-08-12 21:52:19,253 INFO L130 PetriNetUnfolder]: For 21134/21134 co-relation queries the response was YES. [2021-08-12 21:52:19,307 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26184 conditions, 10417 events. 7980/10417 cut-off events. For 21134/21134 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 51315 event pairs, 0 based on Foata normal form. 28/10445 useless extension candidates. Maximal degree in co-relation 22378. Up to 2310 conditions per place. [2021-08-12 21:52:19,357 INFO L132 encePairwiseOnDemand]: 251/255 looper letters, 11 selfloop transitions, 1 changer transitions 0/197 dead transitions. [2021-08-12 21:52:19,357 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 197 transitions, 1054 flow [2021-08-12 21:52:19,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 21:52:19,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-12 21:52:19,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 735 transitions. [2021-08-12 21:52:19,359 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9607843137254902 [2021-08-12 21:52:19,359 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 735 transitions. [2021-08-12 21:52:19,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 735 transitions. [2021-08-12 21:52:19,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:52:19,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 735 transitions. [2021-08-12 21:52:19,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 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) [2021-08-12 21:52:19,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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) [2021-08-12 21:52:19,362 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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) [2021-08-12 21:52:19,362 INFO L348 CegarLoopForPetriNet]: 100 programPoint places, 16 predicate places. [2021-08-12 21:52:19,362 INFO L482 AbstractCegarLoop]: Abstraction has has 116 places, 197 transitions, 1054 flow [2021-08-12 21:52:19,363 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 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) [2021-08-12 21:52:19,363 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:52:19,363 INFO L266 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, 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] [2021-08-12 21:52:19,363 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-12 21:52:19,363 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-08-12 21:52:19,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:52:19,364 INFO L82 PathProgramCache]: Analyzing trace with hash -852635206, now seen corresponding path program 1 times [2021-08-12 21:52:19,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:52:19,364 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684192213] [2021-08-12 21:52:19,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:52:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:52:19,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:19,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:52:19,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:19,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 21:52:19,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:19,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:52:19,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 21:52:19,384 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:52:19,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684192213] [2021-08-12 21:52:19,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684192213] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:52:19,385 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:52:19,385 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 21:52:19,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481098239] [2021-08-12 21:52:19,386 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 21:52:19,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:52:19,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 21:52:19,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 21:52:19,387 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 255 [2021-08-12 21:52:19,388 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 197 transitions, 1054 flow. Second operand has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 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) [2021-08-12 21:52:19,388 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:52:19,388 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 255 [2021-08-12 21:52:19,388 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:52:19,601 INFO L129 PetriNetUnfolder]: 2457/3431 cut-off events. [2021-08-12 21:52:19,601 INFO L130 PetriNetUnfolder]: For 9397/9397 co-relation queries the response was YES. [2021-08-12 21:52:19,618 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8758 conditions, 3431 events. 2457/3431 cut-off events. For 9397/9397 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 16731 event pairs, 0 based on Foata normal form. 748/4179 useless extension candidates. Maximal degree in co-relation 7970. Up to 840 conditions per place. [2021-08-12 21:52:19,781 INFO L132 encePairwiseOnDemand]: 243/255 looper letters, 3 selfloop transitions, 1 changer transitions 0/186 dead transitions. [2021-08-12 21:52:19,781 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 186 transitions, 1007 flow [2021-08-12 21:52:19,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 21:52:19,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-12 21:52:19,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 735 transitions. [2021-08-12 21:52:19,783 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9607843137254902 [2021-08-12 21:52:19,783 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 735 transitions. [2021-08-12 21:52:19,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 735 transitions. [2021-08-12 21:52:19,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:52:19,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 735 transitions. [2021-08-12 21:52:19,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 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) [2021-08-12 21:52:19,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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) [2021-08-12 21:52:19,786 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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) [2021-08-12 21:52:19,787 INFO L348 CegarLoopForPetriNet]: 100 programPoint places, 18 predicate places. [2021-08-12 21:52:19,787 INFO L482 AbstractCegarLoop]: Abstraction has has 118 places, 186 transitions, 1007 flow [2021-08-12 21:52:19,787 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 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) [2021-08-12 21:52:19,787 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:52:19,787 INFO L266 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, 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] [2021-08-12 21:52:19,787 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-12 21:52:19,787 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-08-12 21:52:19,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:52:19,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1190272126, now seen corresponding path program 1 times [2021-08-12 21:52:19,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:52:19,788 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345021090] [2021-08-12 21:52:19,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:52:19,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:52:19,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:19,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:52:19,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:19,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 21:52:19,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:19,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:52:19,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 21:52:19,805 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:52:19,805 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345021090] [2021-08-12 21:52:19,805 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345021090] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:52:19,806 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:52:19,806 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 21:52:19,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245467155] [2021-08-12 21:52:19,806 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 21:52:19,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:52:19,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 21:52:19,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 21:52:19,808 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 255 [2021-08-12 21:52:19,808 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 186 transitions, 1007 flow. Second operand has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 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) [2021-08-12 21:52:19,808 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:52:19,808 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 255 [2021-08-12 21:52:19,808 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:52:19,882 INFO L129 PetriNetUnfolder]: 624/969 cut-off events. [2021-08-12 21:52:19,883 INFO L130 PetriNetUnfolder]: For 2915/2915 co-relation queries the response was YES. [2021-08-12 21:52:19,889 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2496 conditions, 969 events. 624/969 cut-off events. For 2915/2915 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4115 event pairs, 0 based on Foata normal form. 301/1270 useless extension candidates. Maximal degree in co-relation 2415. Up to 252 conditions per place. [2021-08-12 21:52:19,894 INFO L132 encePairwiseOnDemand]: 241/255 looper letters, 1 selfloop transitions, 1 changer transitions 0/160 dead transitions. [2021-08-12 21:52:19,894 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 160 transitions, 863 flow [2021-08-12 21:52:19,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 21:52:19,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-12 21:52:19,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 735 transitions. [2021-08-12 21:52:19,896 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9607843137254902 [2021-08-12 21:52:19,896 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 735 transitions. [2021-08-12 21:52:19,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 735 transitions. [2021-08-12 21:52:19,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:52:19,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 735 transitions. [2021-08-12 21:52:19,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 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) [2021-08-12 21:52:19,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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) [2021-08-12 21:52:19,899 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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) [2021-08-12 21:52:19,900 INFO L348 CegarLoopForPetriNet]: 100 programPoint places, 20 predicate places. [2021-08-12 21:52:19,900 INFO L482 AbstractCegarLoop]: Abstraction has has 120 places, 160 transitions, 863 flow [2021-08-12 21:52:19,900 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 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) [2021-08-12 21:52:19,900 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:52:19,900 INFO L266 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, 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] [2021-08-12 21:52:19,900 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-12 21:52:19,900 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-08-12 21:52:19,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:52:19,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1980040420, now seen corresponding path program 1 times [2021-08-12 21:52:19,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:52:19,901 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278487060] [2021-08-12 21:52:19,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:52:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:52:19,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:19,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:52:19,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:19,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 21:52:19,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:19,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:52:19,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 21:52:19,919 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:52:19,919 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278487060] [2021-08-12 21:52:19,919 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278487060] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:52:19,919 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:52:19,919 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 21:52:19,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809635807] [2021-08-12 21:52:19,919 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 21:52:19,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:52:19,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 21:52:19,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 21:52:19,921 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 255 [2021-08-12 21:52:19,922 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 160 transitions, 863 flow. Second operand has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 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) [2021-08-12 21:52:19,922 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:52:19,922 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 255 [2021-08-12 21:52:19,922 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:52:19,966 INFO L129 PetriNetUnfolder]: 190/381 cut-off events. [2021-08-12 21:52:19,966 INFO L130 PetriNetUnfolder]: For 1073/1073 co-relation queries the response was YES. [2021-08-12 21:52:19,968 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1020 conditions, 381 events. 190/381 cut-off events. For 1073/1073 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1381 event pairs, 0 based on Foata normal form. 84/465 useless extension candidates. Maximal degree in co-relation 937. Up to 63 conditions per place. [2021-08-12 21:52:19,970 INFO L132 encePairwiseOnDemand]: 247/255 looper letters, 6 selfloop transitions, 1 changer transitions 0/153 dead transitions. [2021-08-12 21:52:19,970 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 153 transitions, 842 flow [2021-08-12 21:52:19,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 21:52:19,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-12 21:52:19,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 734 transitions. [2021-08-12 21:52:19,972 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9594771241830066 [2021-08-12 21:52:19,972 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 734 transitions. [2021-08-12 21:52:19,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 734 transitions. [2021-08-12 21:52:19,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:52:19,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 734 transitions. [2021-08-12 21:52:19,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 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) [2021-08-12 21:52:19,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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) [2021-08-12 21:52:19,975 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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) [2021-08-12 21:52:19,975 INFO L348 CegarLoopForPetriNet]: 100 programPoint places, 22 predicate places. [2021-08-12 21:52:19,975 INFO L482 AbstractCegarLoop]: Abstraction has has 122 places, 153 transitions, 842 flow [2021-08-12 21:52:19,976 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 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) [2021-08-12 21:52:19,976 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:52:19,976 INFO L266 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, 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] [2021-08-12 21:52:19,976 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-12 21:52:19,976 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-08-12 21:52:19,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:52:19,977 INFO L82 PathProgramCache]: Analyzing trace with hash -274401474, now seen corresponding path program 1 times [2021-08-12 21:52:19,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:52:19,977 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873102035] [2021-08-12 21:52:19,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:52:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:52:19,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:19,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:52:19,990 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:19,990 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 21:52:19,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:19,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:52:19,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 21:52:19,994 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:52:19,994 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873102035] [2021-08-12 21:52:19,994 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873102035] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:52:19,994 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:52:19,994 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 21:52:19,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497940255] [2021-08-12 21:52:19,995 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 21:52:19,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:52:19,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 21:52:19,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 21:52:19,996 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 255 [2021-08-12 21:52:19,997 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 153 transitions, 842 flow. Second operand has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 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) [2021-08-12 21:52:19,997 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:52:19,997 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 255 [2021-08-12 21:52:19,997 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:52:20,030 INFO L129 PetriNetUnfolder]: 78/213 cut-off events. [2021-08-12 21:52:20,031 INFO L130 PetriNetUnfolder]: For 533/533 co-relation queries the response was YES. [2021-08-12 21:52:20,032 INFO L84 FinitePrefix]: Finished finitePrefix Result has 594 conditions, 213 events. 78/213 cut-off events. For 533/533 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 665 event pairs, 0 based on Foata normal form. 21/234 useless extension candidates. Maximal degree in co-relation 509. Up to 24 conditions per place. [2021-08-12 21:52:20,033 INFO L132 encePairwiseOnDemand]: 248/255 looper letters, 7 selfloop transitions, 1 changer transitions 0/147 dead transitions. [2021-08-12 21:52:20,033 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 147 transitions, 828 flow [2021-08-12 21:52:20,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 21:52:20,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-12 21:52:20,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 734 transitions. [2021-08-12 21:52:20,035 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9594771241830066 [2021-08-12 21:52:20,035 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 734 transitions. [2021-08-12 21:52:20,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 734 transitions. [2021-08-12 21:52:20,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:52:20,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 734 transitions. [2021-08-12 21:52:20,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 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) [2021-08-12 21:52:20,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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) [2021-08-12 21:52:20,039 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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) [2021-08-12 21:52:20,039 INFO L348 CegarLoopForPetriNet]: 100 programPoint places, 24 predicate places. [2021-08-12 21:52:20,039 INFO L482 AbstractCegarLoop]: Abstraction has has 124 places, 147 transitions, 828 flow [2021-08-12 21:52:20,039 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 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) [2021-08-12 21:52:20,039 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:52:20,040 INFO L266 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, 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] [2021-08-12 21:52:20,040 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-12 21:52:20,040 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-08-12 21:52:20,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:52:20,040 INFO L82 PathProgramCache]: Analyzing trace with hash 209758146, now seen corresponding path program 1 times [2021-08-12 21:52:20,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:52:20,041 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657457334] [2021-08-12 21:52:20,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:52:20,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:52:20,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:20,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:52:20,054 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:20,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-12 21:52:20,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:20,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:52:20,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 21:52:20,059 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:52:20,059 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657457334] [2021-08-12 21:52:20,060 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657457334] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:52:20,060 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:52:20,060 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 21:52:20,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684495970] [2021-08-12 21:52:20,060 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 21:52:20,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:52:20,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 21:52:20,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 21:52:20,062 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 255 [2021-08-12 21:52:20,062 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 147 transitions, 828 flow. Second operand has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 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) [2021-08-12 21:52:20,062 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:52:20,062 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 255 [2021-08-12 21:52:20,063 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:52:20,081 INFO L129 PetriNetUnfolder]: 0/57 cut-off events. [2021-08-12 21:52:20,081 INFO L130 PetriNetUnfolder]: For 89/89 co-relation queries the response was YES. [2021-08-12 21:52:20,082 INFO L84 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 57 events. 0/57 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 77 event pairs, 0 based on Foata normal form. 12/69 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-08-12 21:52:20,082 INFO L132 encePairwiseOnDemand]: 242/255 looper letters, 1 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2021-08-12 21:52:20,082 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 57 transitions, 250 flow [2021-08-12 21:52:20,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 21:52:20,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-12 21:52:20,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 734 transitions. [2021-08-12 21:52:20,084 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9594771241830066 [2021-08-12 21:52:20,084 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 734 transitions. [2021-08-12 21:52:20,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 734 transitions. [2021-08-12 21:52:20,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:52:20,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 734 transitions. [2021-08-12 21:52:20,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 244.66666666666666) internal successors, (734), 3 states have internal predecessors, (734), 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) [2021-08-12 21:52:20,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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) [2021-08-12 21:52:20,087 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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) [2021-08-12 21:52:20,087 INFO L348 CegarLoopForPetriNet]: 100 programPoint places, 26 predicate places. [2021-08-12 21:52:20,087 INFO L482 AbstractCegarLoop]: Abstraction has has 126 places, 57 transitions, 250 flow [2021-08-12 21:52:20,088 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 240.66666666666666) internal successors, (722), 3 states have internal predecessors, (722), 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) [2021-08-12 21:52:20,088 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:52:20,088 INFO L266 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, 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] [2021-08-12 21:52:20,088 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-12 21:52:20,088 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-08-12 21:52:20,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:52:20,089 INFO L82 PathProgramCache]: Analyzing trace with hash 109262252, now seen corresponding path program 1 times [2021-08-12 21:52:20,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:52:20,089 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716078931] [2021-08-12 21:52:20,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:52:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:52:20,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:20,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:52:20,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:20,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 21:52:20,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:20,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 21:52:20,247 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-12 21:52:20,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-12 21:52:20,289 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-12 21:52:20,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-12 21:52:20,335 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-08-12 21:52:20,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-12 21:52:20,383 INFO L142 QuantifierPusher]: treesize reduction 27, result has 64.5 percent of original size [2021-08-12 21:52:20,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-12 21:52:20,445 INFO L142 QuantifierPusher]: treesize reduction 36, result has 61.3 percent of original size [2021-08-12 21:52:20,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-08-12 21:52:20,521 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-08-12 21:52:20,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-08-12 21:52:20,575 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-08-12 21:52:20,577 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-08-12 21:52:20,633 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-08-12 21:52:20,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-08-12 21:52:20,698 INFO L142 QuantifierPusher]: treesize reduction 81, result has 51.2 percent of original size [2021-08-12 21:52:20,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-08-12 21:52:20,774 INFO L142 QuantifierPusher]: treesize reduction 99, result has 49.0 percent of original size [2021-08-12 21:52:20,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-08-12 21:52:20,883 INFO L142 QuantifierPusher]: treesize reduction 108, result has 48.8 percent of original size [2021-08-12 21:52:20,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-08-12 21:52:20,983 INFO L142 QuantifierPusher]: treesize reduction 117, result has 47.3 percent of original size [2021-08-12 21:52:20,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-08-12 21:52:21,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 21:52:21,062 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:52:21,062 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716078931] [2021-08-12 21:52:21,062 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716078931] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:52:21,062 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:52:21,062 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-12 21:52:21,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316359410] [2021-08-12 21:52:21,066 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-08-12 21:52:21,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:52:21,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-12 21:52:21,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-08-12 21:52:21,070 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 255 [2021-08-12 21:52:21,073 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 57 transitions, 250 flow. Second operand has 16 states, 16 states have (on average 239.9375) internal successors, (3839), 16 states have internal predecessors, (3839), 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) [2021-08-12 21:52:21,073 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:52:21,073 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 255 [2021-08-12 21:52:21,073 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:52:41,359 WARN L205 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-08-12 21:52:41,922 INFO L129 PetriNetUnfolder]: 135171/187606 cut-off events. [2021-08-12 21:52:41,922 INFO L130 PetriNetUnfolder]: For 9145/9145 co-relation queries the response was YES. [2021-08-12 21:52:44,583 INFO L84 FinitePrefix]: Finished finitePrefix Result has 353685 conditions, 187606 events. 135171/187606 cut-off events. For 9145/9145 co-relation queries the response was YES. Maximal size of possible extension queue 12539. Compared 1479228 event pairs, 45057 based on Foata normal form. 1/185849 useless extension candidates. Maximal degree in co-relation 353533. Up to 57345 conditions per place. [2021-08-12 21:52:45,390 INFO L132 encePairwiseOnDemand]: 240/255 looper letters, 104 selfloop transitions, 13 changer transitions 1/160 dead transitions. [2021-08-12 21:52:45,391 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 160 transitions, 692 flow [2021-08-12 21:52:45,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-12 21:52:45,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-08-12 21:52:45,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3943 transitions. [2021-08-12 21:52:45,398 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.966421568627451 [2021-08-12 21:52:45,398 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3943 transitions. [2021-08-12 21:52:45,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3943 transitions. [2021-08-12 21:52:45,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-12 21:52:45,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3943 transitions. [2021-08-12 21:52:45,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 246.4375) internal successors, (3943), 16 states have internal predecessors, (3943), 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) [2021-08-12 21:52:45,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 255.0) internal successors, (4335), 17 states have internal predecessors, (4335), 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) [2021-08-12 21:52:45,419 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 255.0) internal successors, (4335), 17 states have internal predecessors, (4335), 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) [2021-08-12 21:52:45,419 INFO L348 CegarLoopForPetriNet]: 100 programPoint places, 41 predicate places. [2021-08-12 21:52:45,419 INFO L482 AbstractCegarLoop]: Abstraction has has 141 places, 160 transitions, 692 flow [2021-08-12 21:52:45,420 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 239.9375) internal successors, (3839), 16 states have internal predecessors, (3839), 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) [2021-08-12 21:52:45,420 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-12 21:52:45,420 INFO L266 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, 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] [2021-08-12 21:52:45,420 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-12 21:52:45,420 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2021-08-12 21:52:45,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 21:52:45,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1325400386, now seen corresponding path program 2 times [2021-08-12 21:52:45,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 21:52:45,421 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714939438] [2021-08-12 21:52:45,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 21:52:45,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 21:52:45,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:45,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-12 21:52:45,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:45,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-12 21:52:45,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-12 21:52:45,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-12 21:52:45,540 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-12 21:52:45,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-12 21:52:45,553 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-12 21:52:45,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-12 21:52:45,574 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-12 21:52:45,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-12 21:52:45,596 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-12 21:52:45,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-12 21:52:45,625 INFO L142 QuantifierPusher]: treesize reduction 45, result has 54.1 percent of original size [2021-08-12 21:52:45,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-08-12 21:52:45,661 INFO L142 QuantifierPusher]: treesize reduction 54, result has 53.0 percent of original size [2021-08-12 21:52:45,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-08-12 21:52:45,705 INFO L142 QuantifierPusher]: treesize reduction 63, result has 52.3 percent of original size [2021-08-12 21:52:45,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-08-12 21:52:45,760 INFO L142 QuantifierPusher]: treesize reduction 72, result has 51.7 percent of original size [2021-08-12 21:52:45,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-08-12 21:52:45,819 INFO L142 QuantifierPusher]: treesize reduction 81, result has 51.2 percent of original size [2021-08-12 21:52:45,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-08-12 21:52:45,886 INFO L142 QuantifierPusher]: treesize reduction 90, result has 50.8 percent of original size [2021-08-12 21:52:45,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-08-12 21:52:45,962 INFO L142 QuantifierPusher]: treesize reduction 99, result has 50.5 percent of original size [2021-08-12 21:52:45,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-08-12 21:52:46,040 INFO L142 QuantifierPusher]: treesize reduction 117, result has 47.3 percent of original size [2021-08-12 21:52:46,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-08-12 21:52:46,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 21:52:46,114 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 21:52:46,114 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714939438] [2021-08-12 21:52:46,114 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714939438] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 21:52:46,114 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 21:52:46,114 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-12 21:52:46,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119756827] [2021-08-12 21:52:46,115 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-08-12 21:52:46,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 21:52:46,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-12 21:52:46,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-08-12 21:52:46,117 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 255 [2021-08-12 21:52:46,119 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 160 transitions, 692 flow. Second operand has 16 states, 16 states have (on average 239.9375) internal successors, (3839), 16 states have internal predecessors, (3839), 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) [2021-08-12 21:52:46,120 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-12 21:52:46,120 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 255 [2021-08-12 21:52:46,120 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-12 21:53:31,123 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55