/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-OGIterative.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 02:42:39,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 02:42:39,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 02:42:39,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-13 02:42:39,753 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-13 02:42:39,755 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-13 02:42:39,757 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-13 02:42:39,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-13 02:42:39,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-13 02:42:39,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-13 02:42:39,767 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-13 02:42:39,768 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-13 02:42:39,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 02:42:39,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 02:42:39,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 02:42:39,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 02:42:39,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 02:42:39,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 02:42:39,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 02:42:39,781 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 02:42:39,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 02:42:39,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 02:42:39,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 02:42:39,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 02:42:39,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-13 02:42:39,789 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-13 02:42:39,790 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-13 02:42:39,791 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-13 02:42:39,791 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-13 02:42:39,791 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-13 02:42:39,792 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-13 02:42:39,792 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-13 02:42:39,793 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-13 02:42:39,794 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-13 02:42:39,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-13 02:42:39,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-13 02:42:39,796 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-13 02:42:39,796 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-13 02:42:39,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 02:42:39,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 02:42:39,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 02:42:39,801 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-OGIterative.epf [2021-08-13 02:42:39,828 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 02:42:39,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 02:42:39,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 02:42:39,831 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 02:42:39,831 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 02:42:39,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 02:42:39,832 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 02:42:39,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 02:42:39,832 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 02:42:39,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 02:42:39,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 02:42:39,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 02:42:39,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 02:42:39,833 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 02:42:39,833 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 02:42:39,833 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 02:42:39,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 02:42:39,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 02:42:39,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 02:42:39,833 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 02:42:39,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 02:42:39,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 02:42:39,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 02:42:39,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 02:42:39,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 02:42:39,834 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 02:42:39,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 02:42:39,834 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 02:42:39,834 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 02:42:39,834 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 02:42:39,835 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 02:42:39,835 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 02:42:40,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 02:42:40,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 02:42:40,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 02:42:40,105 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-13 02:42:40,110 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-13 02:42:40,111 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl [2021-08-13 02:42:40,111 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_7.bpl' [2021-08-13 02:42:40,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 02:42:40,150 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-13 02:42:40,151 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 02:42:40,151 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 02:42:40,154 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 02:42:40,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:42:40" (1/1) ... [2021-08-13 02:42:40,167 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:42:40" (1/1) ... [2021-08-13 02:42:40,171 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 02:42:40,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 02:42:40,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 02:42:40,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 02:42:40,178 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:42:40" (1/1) ... [2021-08-13 02:42:40,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:42:40" (1/1) ... [2021-08-13 02:42:40,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:42:40" (1/1) ... [2021-08-13 02:42:40,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:42:40" (1/1) ... [2021-08-13 02:42:40,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:42:40" (1/1) ... [2021-08-13 02:42:40,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:42:40" (1/1) ... [2021-08-13 02:42:40,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:42:40" (1/1) ... [2021-08-13 02:42:40,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 02:42:40,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 02:42:40,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 02:42:40,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 02:42:40,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:42:40" (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 [2021-08-13 02:42:40,225 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-08-13 02:42:40,225 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-08-13 02:42:40,225 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-08-13 02:42:40,225 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-08-13 02:42:40,225 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-08-13 02:42:40,225 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-08-13 02:42:40,226 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-08-13 02:42:40,226 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-08-13 02:42:40,226 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-08-13 02:42:40,226 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2021-08-13 02:42:40,226 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2021-08-13 02:42:40,226 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2021-08-13 02:42:40,226 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-08-13 02:42:40,226 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-08-13 02:42:40,226 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-08-13 02:42:40,226 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-13 02:42:40,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 02:42:40,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 02:42:40,227 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2021-08-13 02:42:40,227 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2021-08-13 02:42:40,227 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2021-08-13 02:42:40,227 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2021-08-13 02:42:40,227 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2021-08-13 02:42:40,227 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2021-08-13 02:42:40,228 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-13 02:42:40,334 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 02:42:40,334 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-13 02:42:40,336 INFO L202 PluginConnector]: Adding new model example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 02:42:40 BoogieIcfgContainer [2021-08-13 02:42:40,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 02:42:40,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 02:42:40,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 02:42:40,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 02:42:40,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_7.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 02:42:40" (1/2) ... [2021-08-13 02:42:40,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6685c743 and model type example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 02:42:40, skipping insertion in model container [2021-08-13 02:42:40,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_7.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 02:42:40" (2/2) ... [2021-08-13 02:42:40,341 INFO L111 eAbstractionObserver]: Analyzing ICFG example_7.bpl [2021-08-13 02:42:40,344 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 02:42:40,344 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 02:42:40,345 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 02:42:40,428 INFO L149 ThreadInstanceAdder]: Constructed 49 joinOtherThreadTransitions. [2021-08-13 02:42:40,458 INFO L255 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-08-13 02:42:40,471 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 02:42:40,471 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 02:42:40,471 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 02:42:40,471 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 02:42:40,471 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 02:42:40,471 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 02:42:40,471 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 02:42:40,471 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 02:42:40,478 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 60 places, 80 transitions, 342 flow [2021-08-13 02:42:40,633 INFO L129 PetriNetUnfolder]: 321/472 cut-off events. [2021-08-13 02:42:40,633 INFO L130 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2021-08-13 02:42:40,647 INFO L84 FinitePrefix]: Finished finitePrefix Result has 942 conditions, 472 events. 321/472 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1541 event pairs, 0 based on Foata normal form. 0/471 useless extension candidates. Maximal degree in co-relation 416. Up to 140 conditions per place. [2021-08-13 02:42:40,648 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 80 transitions, 342 flow [2021-08-13 02:42:40,656 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 71 transitions, 310 flow [2021-08-13 02:42:40,710 INFO L129 PetriNetUnfolder]: 321/469 cut-off events. [2021-08-13 02:42:40,710 INFO L130 PetriNetUnfolder]: For 448/448 co-relation queries the response was YES. [2021-08-13 02:42:40,710 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:42:40,711 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] [2021-08-13 02:42:40,711 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:42:40,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:42:40,718 INFO L82 PathProgramCache]: Analyzing trace with hash -2083937691, now seen corresponding path program 1 times [2021-08-13 02:42:40,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:42:40,724 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193166764] [2021-08-13 02:42:40,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:42:40,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:42:40,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:40,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:42:40,860 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:40,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 02:42:40,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:40,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:42:40,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:42:40,869 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:42:40,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193166764] [2021-08-13 02:42:40,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193166764] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:42:40,870 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:42:40,870 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 02:42:40,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045674743] [2021-08-13 02:42:40,875 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 02:42:40,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:42:40,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 02:42:40,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 02:42:40,888 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 80 [2021-08-13 02:42:40,893 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 71 transitions, 310 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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) [2021-08-13 02:42:40,894 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:42:40,894 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 80 [2021-08-13 02:42:40,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:42:40,942 INFO L129 PetriNetUnfolder]: 135/227 cut-off events. [2021-08-13 02:42:40,943 INFO L130 PetriNetUnfolder]: For 391/391 co-relation queries the response was YES. [2021-08-13 02:42:40,943 INFO L84 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 227 events. 135/227 cut-off events. For 391/391 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 767 event pairs, 0 based on Foata normal form. 57/284 useless extension candidates. Maximal degree in co-relation 401. Up to 60 conditions per place. [2021-08-13 02:42:40,945 INFO L132 encePairwiseOnDemand]: 74/80 looper letters, 2 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2021-08-13 02:42:40,945 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 66 transitions, 291 flow [2021-08-13 02:42:40,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 02:42:40,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 02:42:40,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2021-08-13 02:42:40,953 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2021-08-13 02:42:40,953 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2021-08-13 02:42:40,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2021-08-13 02:42:40,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:42:40,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2021-08-13 02:42:40,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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) [2021-08-13 02:42:40,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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) [2021-08-13 02:42:40,960 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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) [2021-08-13 02:42:40,961 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2021-08-13 02:42:40,961 INFO L482 AbstractCegarLoop]: Abstraction has has 53 places, 66 transitions, 291 flow [2021-08-13 02:42:40,961 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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) [2021-08-13 02:42:40,961 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:42:40,961 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] [2021-08-13 02:42:40,962 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 02:42:40,962 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:42:40,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:42:40,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1355406023, now seen corresponding path program 1 times [2021-08-13 02:42:40,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:42:40,962 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262486409] [2021-08-13 02:42:40,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:42:40,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:42:40,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:40,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:42:40,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:40,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 02:42:40,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:40,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:42:40,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:42:40,979 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:42:40,979 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262486409] [2021-08-13 02:42:40,979 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262486409] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:42:40,979 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:42:40,979 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 02:42:40,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58063260] [2021-08-13 02:42:40,980 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 02:42:40,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:42:40,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 02:42:40,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 02:42:40,982 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 80 [2021-08-13 02:42:40,982 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 66 transitions, 291 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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) [2021-08-13 02:42:40,982 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:42:40,982 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 80 [2021-08-13 02:42:40,982 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:42:41,002 INFO L129 PetriNetUnfolder]: 130/221 cut-off events. [2021-08-13 02:42:41,002 INFO L130 PetriNetUnfolder]: For 282/282 co-relation queries the response was YES. [2021-08-13 02:42:41,003 INFO L84 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 221 events. 130/221 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 776 event pairs, 0 based on Foata normal form. 1/222 useless extension candidates. Maximal degree in co-relation 420. Up to 60 conditions per place. [2021-08-13 02:42:41,004 INFO L132 encePairwiseOnDemand]: 78/80 looper letters, 6 selfloop transitions, 1 changer transitions 0/65 dead transitions. [2021-08-13 02:42:41,004 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 65 transitions, 300 flow [2021-08-13 02:42:41,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 02:42:41,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 02:42:41,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2021-08-13 02:42:41,006 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2021-08-13 02:42:41,006 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2021-08-13 02:42:41,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2021-08-13 02:42:41,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:42:41,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2021-08-13 02:42:41,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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) [2021-08-13 02:42:41,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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) [2021-08-13 02:42:41,008 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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) [2021-08-13 02:42:41,009 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2021-08-13 02:42:41,009 INFO L482 AbstractCegarLoop]: Abstraction has has 55 places, 65 transitions, 300 flow [2021-08-13 02:42:41,009 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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) [2021-08-13 02:42:41,009 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:42:41,009 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] [2021-08-13 02:42:41,009 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 02:42:41,009 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:42:41,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:42:41,010 INFO L82 PathProgramCache]: Analyzing trace with hash 2095702071, now seen corresponding path program 1 times [2021-08-13 02:42:41,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:42:41,010 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557197976] [2021-08-13 02:42:41,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:42:41,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:42:41,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:41,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:42:41,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:41,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 02:42:41,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:41,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:42:41,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:42:41,027 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:42:41,027 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557197976] [2021-08-13 02:42:41,028 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557197976] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:42:41,028 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:42:41,028 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 02:42:41,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920522201] [2021-08-13 02:42:41,028 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 02:42:41,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:42:41,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 02:42:41,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 02:42:41,029 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 80 [2021-08-13 02:42:41,030 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 65 transitions, 300 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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) [2021-08-13 02:42:41,030 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:42:41,030 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 80 [2021-08-13 02:42:41,030 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:42:41,047 INFO L129 PetriNetUnfolder]: 106/191 cut-off events. [2021-08-13 02:42:41,047 INFO L130 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2021-08-13 02:42:41,047 INFO L84 FinitePrefix]: Finished finitePrefix Result has 449 conditions, 191 events. 106/191 cut-off events. For 309/309 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 564 event pairs, 0 based on Foata normal form. 5/196 useless extension candidates. Maximal degree in co-relation 381. Up to 60 conditions per place. [2021-08-13 02:42:41,048 INFO L132 encePairwiseOnDemand]: 77/80 looper letters, 5 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2021-08-13 02:42:41,049 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 63 transitions, 302 flow [2021-08-13 02:42:41,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 02:42:41,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 02:42:41,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2021-08-13 02:42:41,050 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2021-08-13 02:42:41,050 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2021-08-13 02:42:41,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2021-08-13 02:42:41,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:42:41,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2021-08-13 02:42:41,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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) [2021-08-13 02:42:41,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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) [2021-08-13 02:42:41,052 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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) [2021-08-13 02:42:41,052 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 6 predicate places. [2021-08-13 02:42:41,052 INFO L482 AbstractCegarLoop]: Abstraction has has 57 places, 63 transitions, 302 flow [2021-08-13 02:42:41,052 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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) [2021-08-13 02:42:41,052 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:42:41,052 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] [2021-08-13 02:42:41,053 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 02:42:41,053 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:42:41,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:42:41,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1070603885, now seen corresponding path program 1 times [2021-08-13 02:42:41,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:42:41,053 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939336784] [2021-08-13 02:42:41,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:42:41,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:42:41,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:41,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:42:41,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:41,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 02:42:41,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:41,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:42:41,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:42:41,072 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:42:41,072 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939336784] [2021-08-13 02:42:41,072 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939336784] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:42:41,073 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:42:41,073 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 02:42:41,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124357203] [2021-08-13 02:42:41,073 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 02:42:41,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:42:41,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 02:42:41,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 02:42:41,074 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 80 [2021-08-13 02:42:41,074 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 63 transitions, 302 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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) [2021-08-13 02:42:41,075 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:42:41,075 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 80 [2021-08-13 02:42:41,075 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:42:41,101 INFO L129 PetriNetUnfolder]: 30/79 cut-off events. [2021-08-13 02:42:41,101 INFO L130 PetriNetUnfolder]: For 187/187 co-relation queries the response was YES. [2021-08-13 02:42:41,102 INFO L84 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 79 events. 30/79 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 181 event pairs, 0 based on Foata normal form. 26/105 useless extension candidates. Maximal degree in co-relation 150. Up to 20 conditions per place. [2021-08-13 02:42:41,102 INFO L132 encePairwiseOnDemand]: 73/80 looper letters, 1 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2021-08-13 02:42:41,102 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 46 transitions, 211 flow [2021-08-13 02:42:41,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 02:42:41,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 02:42:41,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2021-08-13 02:42:41,103 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2021-08-13 02:42:41,103 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2021-08-13 02:42:41,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2021-08-13 02:42:41,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:42:41,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2021-08-13 02:42:41,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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) [2021-08-13 02:42:41,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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) [2021-08-13 02:42:41,105 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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) [2021-08-13 02:42:41,105 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 8 predicate places. [2021-08-13 02:42:41,105 INFO L482 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 211 flow [2021-08-13 02:42:41,105 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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) [2021-08-13 02:42:41,105 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:42:41,105 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] [2021-08-13 02:42:41,105 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 02:42:41,105 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:42:41,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:42:41,106 INFO L82 PathProgramCache]: Analyzing trace with hash -706613177, now seen corresponding path program 1 times [2021-08-13 02:42:41,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:42:41,106 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584588341] [2021-08-13 02:42:41,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:42:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:42:41,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:41,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:42:41,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:41,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:42:41,176 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 02:42:41,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 02:42:41,193 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 02:42:41,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 02:42:41,217 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 02:42:41,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 02:42:41,236 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 02:42:41,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 02:42:41,262 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-08-13 02:42:41,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-08-13 02:42:41,291 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:42:41,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:42:41,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:42:41,315 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:42:41,316 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584588341] [2021-08-13 02:42:41,316 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584588341] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:42:41,316 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:42:41,316 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:42:41,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663633051] [2021-08-13 02:42:41,316 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:42:41,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:42:41,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:42:41,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:42:41,318 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:42:41,318 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 211 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:42:41,318 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:42:41,318 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:42:41,318 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:42:41,591 INFO L129 PetriNetUnfolder]: 1143/2290 cut-off events. [2021-08-13 02:42:41,591 INFO L130 PetriNetUnfolder]: For 2718/2718 co-relation queries the response was YES. [2021-08-13 02:42:41,601 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5023 conditions, 2290 events. 1143/2290 cut-off events. For 2718/2718 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 17866 event pairs, 129 based on Foata normal form. 1/2166 useless extension candidates. Maximal degree in co-relation 4952. Up to 503 conditions per place. [2021-08-13 02:42:41,611 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 27 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2021-08-13 02:42:41,611 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 72 transitions, 331 flow [2021-08-13 02:42:41,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:42:41,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:42:41,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:42:41,614 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:42:41,614 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:42:41,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:42:41,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:42:41,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:42:41,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:42:41,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:42:41,617 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:42:41,617 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 16 predicate places. [2021-08-13 02:42:41,617 INFO L482 AbstractCegarLoop]: Abstraction has has 67 places, 72 transitions, 331 flow [2021-08-13 02:42:41,618 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:42:41,618 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:42:41,618 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] [2021-08-13 02:42:41,618 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 02:42:41,618 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:42:41,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:42:41,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1019041477, now seen corresponding path program 1 times [2021-08-13 02:42:41,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:42:41,619 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641299359] [2021-08-13 02:42:41,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:42:41,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:42:41,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:41,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:42:41,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:41,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 02:42:41,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:41,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:42:41,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:42:41,656 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:42:41,656 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641299359] [2021-08-13 02:42:41,657 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641299359] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:42:41,657 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:42:41,657 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 02:42:41,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771530314] [2021-08-13 02:42:41,657 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 02:42:41,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:42:41,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 02:42:41,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 02:42:41,661 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 80 [2021-08-13 02:42:41,661 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 72 transitions, 331 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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) [2021-08-13 02:42:41,661 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:42:41,661 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 80 [2021-08-13 02:42:41,661 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:42:41,792 INFO L129 PetriNetUnfolder]: 623/1462 cut-off events. [2021-08-13 02:42:41,792 INFO L130 PetriNetUnfolder]: For 1995/1995 co-relation queries the response was YES. [2021-08-13 02:42:41,798 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3157 conditions, 1462 events. 623/1462 cut-off events. For 1995/1995 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 11364 event pairs, 129 based on Foata normal form. 169/1569 useless extension candidates. Maximal degree in co-relation 3084. Up to 225 conditions per place. [2021-08-13 02:42:41,802 INFO L132 encePairwiseOnDemand]: 76/80 looper letters, 2 selfloop transitions, 1 changer transitions 0/69 dead transitions. [2021-08-13 02:42:41,803 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 69 transitions, 322 flow [2021-08-13 02:42:41,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 02:42:41,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 02:42:41,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 222 transitions. [2021-08-13 02:42:41,804 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.925 [2021-08-13 02:42:41,804 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 222 transitions. [2021-08-13 02:42:41,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 222 transitions. [2021-08-13 02:42:41,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:42:41,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 222 transitions. [2021-08-13 02:42:41,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 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) [2021-08-13 02:42:41,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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) [2021-08-13 02:42:41,805 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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) [2021-08-13 02:42:41,806 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 18 predicate places. [2021-08-13 02:42:41,806 INFO L482 AbstractCegarLoop]: Abstraction has has 69 places, 69 transitions, 322 flow [2021-08-13 02:42:41,806 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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) [2021-08-13 02:42:41,806 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:42:41,806 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] [2021-08-13 02:42:41,806 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 02:42:41,806 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:42:41,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:42:41,807 INFO L82 PathProgramCache]: Analyzing trace with hash 148095015, now seen corresponding path program 1 times [2021-08-13 02:42:41,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:42:41,807 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376303218] [2021-08-13 02:42:41,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:42:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:42:41,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:41,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:42:41,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:41,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 02:42:41,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:41,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:42:41,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:42:41,841 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:42:41,841 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376303218] [2021-08-13 02:42:41,841 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376303218] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:42:41,841 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:42:41,841 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 02:42:41,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092712010] [2021-08-13 02:42:41,841 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 02:42:41,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:42:41,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 02:42:41,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 02:42:41,842 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 80 [2021-08-13 02:42:41,842 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 69 transitions, 322 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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) [2021-08-13 02:42:41,843 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:42:41,843 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 80 [2021-08-13 02:42:41,843 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:42:41,898 INFO L129 PetriNetUnfolder]: 387/918 cut-off events. [2021-08-13 02:42:41,899 INFO L130 PetriNetUnfolder]: For 785/785 co-relation queries the response was YES. [2021-08-13 02:42:41,902 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1790 conditions, 918 events. 387/918 cut-off events. For 785/785 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6428 event pairs, 129 based on Foata normal form. 130/998 useless extension candidates. Maximal degree in co-relation 1715. Up to 225 conditions per place. [2021-08-13 02:42:41,905 INFO L132 encePairwiseOnDemand]: 75/80 looper letters, 1 selfloop transitions, 1 changer transitions 1/55 dead transitions. [2021-08-13 02:42:41,905 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 55 transitions, 244 flow [2021-08-13 02:42:41,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 02:42:41,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 02:42:41,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 222 transitions. [2021-08-13 02:42:41,910 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.925 [2021-08-13 02:42:41,910 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 222 transitions. [2021-08-13 02:42:41,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 222 transitions. [2021-08-13 02:42:41,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:42:41,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 222 transitions. [2021-08-13 02:42:41,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 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) [2021-08-13 02:42:41,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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) [2021-08-13 02:42:41,911 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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) [2021-08-13 02:42:41,911 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 20 predicate places. [2021-08-13 02:42:41,911 INFO L482 AbstractCegarLoop]: Abstraction has has 71 places, 55 transitions, 244 flow [2021-08-13 02:42:41,911 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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) [2021-08-13 02:42:41,912 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:42:41,912 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] [2021-08-13 02:42:41,912 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 02:42:41,912 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:42:41,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:42:41,912 INFO L82 PathProgramCache]: Analyzing trace with hash -128851093, now seen corresponding path program 2 times [2021-08-13 02:42:41,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:42:41,913 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724134419] [2021-08-13 02:42:41,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:42:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:42:41,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:41,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:42:41,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:41,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:42:41,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:41,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 02:42:41,994 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 02:42:41,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 02:42:42,010 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 02:42:42,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 02:42:42,027 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 02:42:42,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 02:42:42,071 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 02:42:42,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 02:42:42,101 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:42:42,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:42:42,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:42:42,123 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:42:42,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724134419] [2021-08-13 02:42:42,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724134419] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:42:42,124 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:42:42,124 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:42:42,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114534437] [2021-08-13 02:42:42,124 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:42:42,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:42:42,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:42:42,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:42:42,125 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:42:42,126 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 55 transitions, 244 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:42:42,126 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:42:42,126 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:42:42,126 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:42:42,284 INFO L129 PetriNetUnfolder]: 458/1340 cut-off events. [2021-08-13 02:42:42,285 INFO L130 PetriNetUnfolder]: For 822/1654 co-relation queries the response was YES. [2021-08-13 02:42:42,289 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3417 conditions, 1340 events. 458/1340 cut-off events. For 822/1654 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 10816 event pairs, 49 based on Foata normal form. 1/1290 useless extension candidates. Maximal degree in co-relation 3254. Up to 302 conditions per place. [2021-08-13 02:42:42,294 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 85 selfloop transitions, 19 changer transitions 3/128 dead transitions. [2021-08-13 02:42:42,294 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 128 transitions, 750 flow [2021-08-13 02:42:42,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:42:42,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:42:42,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:42:42,296 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:42:42,296 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:42:42,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:42:42,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:42:42,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:42:42,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:42:42,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:42:42,298 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:42:42,298 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 28 predicate places. [2021-08-13 02:42:42,299 INFO L482 AbstractCegarLoop]: Abstraction has has 79 places, 128 transitions, 750 flow [2021-08-13 02:42:42,299 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:42:42,299 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:42:42,299 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] [2021-08-13 02:42:42,299 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-13 02:42:42,299 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:42:42,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:42:42,299 INFO L82 PathProgramCache]: Analyzing trace with hash -356317913, now seen corresponding path program 3 times [2021-08-13 02:42:42,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:42:42,300 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382801506] [2021-08-13 02:42:42,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:42:42,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:42:42,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:42,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:42:42,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:42,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:42:42,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:42,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 02:42:42,335 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 02:42:42,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 02:42:42,346 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 02:42:42,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 02:42:42,361 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 02:42:42,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 02:42:42,400 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-08-13 02:42:42,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-08-13 02:42:42,427 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:42:42,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:42:42,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:42:42,451 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:42:42,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382801506] [2021-08-13 02:42:42,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382801506] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:42:42,451 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:42:42,451 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:42:42,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551292893] [2021-08-13 02:42:42,451 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:42:42,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:42:42,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:42:42,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:42:42,453 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:42:42,453 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 128 transitions, 750 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:42:42,453 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:42:42,453 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:42:42,453 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:42:42,640 INFO L129 PetriNetUnfolder]: 546/1888 cut-off events. [2021-08-13 02:42:42,641 INFO L130 PetriNetUnfolder]: For 1579/4391 co-relation queries the response was YES. [2021-08-13 02:42:42,647 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5785 conditions, 1888 events. 546/1888 cut-off events. For 1579/4391 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 17890 event pairs, 17 based on Foata normal form. 3/1835 useless extension candidates. Maximal degree in co-relation 5459. Up to 423 conditions per place. [2021-08-13 02:42:42,655 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 207 selfloop transitions, 52 changer transitions 5/285 dead transitions. [2021-08-13 02:42:42,656 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 285 transitions, 2220 flow [2021-08-13 02:42:42,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:42:42,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:42:42,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:42:42,657 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:42:42,657 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:42:42,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:42:42,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:42:42,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:42:42,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:42:42,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:42:42,660 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:42:42,660 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 36 predicate places. [2021-08-13 02:42:42,660 INFO L482 AbstractCegarLoop]: Abstraction has has 87 places, 285 transitions, 2220 flow [2021-08-13 02:42:42,660 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:42:42,660 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:42:42,660 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] [2021-08-13 02:42:42,661 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-13 02:42:42,661 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:42:42,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:42:42,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1942707917, now seen corresponding path program 4 times [2021-08-13 02:42:42,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:42:42,661 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326681879] [2021-08-13 02:42:42,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:42:42,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:42:42,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:42,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:42:42,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:42,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:42:42,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:42,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 02:42:42,694 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 02:42:42,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 02:42:42,705 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 02:42:42,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 02:42:42,719 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 02:42:42,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 02:42:42,739 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-08-13 02:42:42,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-08-13 02:42:42,792 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:42:42,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:42:42,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:42:42,815 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:42:42,816 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326681879] [2021-08-13 02:42:42,816 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326681879] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:42:42,816 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:42:42,816 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:42:42,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337302185] [2021-08-13 02:42:42,816 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:42:42,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:42:42,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:42:42,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:42:42,818 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:42:42,818 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 285 transitions, 2220 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:42:42,818 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:42:42,818 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:42:42,818 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:42:43,132 INFO L129 PetriNetUnfolder]: 649/2670 cut-off events. [2021-08-13 02:42:43,132 INFO L130 PetriNetUnfolder]: For 2939/8123 co-relation queries the response was YES. [2021-08-13 02:42:43,142 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9407 conditions, 2670 events. 649/2670 cut-off events. For 2939/8123 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 29045 event pairs, 5 based on Foata normal form. 13/2619 useless extension candidates. Maximal degree in co-relation 8750. Up to 586 conditions per place. [2021-08-13 02:42:43,155 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 442 selfloop transitions, 155 changer transitions 8/626 dead transitions. [2021-08-13 02:42:43,156 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 626 transitions, 6158 flow [2021-08-13 02:42:43,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:42:43,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:42:43,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:42:43,158 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:42:43,158 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:42:43,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:42:43,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:42:43,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:42:43,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:42:43,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:42:43,160 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:42:43,161 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 44 predicate places. [2021-08-13 02:42:43,161 INFO L482 AbstractCegarLoop]: Abstraction has has 95 places, 626 transitions, 6158 flow [2021-08-13 02:42:43,161 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:42:43,161 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:42:43,161 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] [2021-08-13 02:42:43,161 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-13 02:42:43,161 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:42:43,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:42:43,162 INFO L82 PathProgramCache]: Analyzing trace with hash 481951475, now seen corresponding path program 5 times [2021-08-13 02:42:43,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:42:43,162 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73038017] [2021-08-13 02:42:43,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:42:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:42:43,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:43,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:42:43,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:43,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:42:43,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:43,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 02:42:43,221 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 02:42:43,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 02:42:43,236 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 02:42:43,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 02:42:43,255 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 02:42:43,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 02:42:43,281 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-08-13 02:42:43,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-08-13 02:42:43,309 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:42:43,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:42:43,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:42:43,334 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:42:43,334 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73038017] [2021-08-13 02:42:43,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73038017] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:42:43,334 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:42:43,334 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:42:43,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291131994] [2021-08-13 02:42:43,334 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:42:43,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:42:43,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:42:43,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:42:43,335 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:42:43,336 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 626 transitions, 6158 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:42:43,336 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:42:43,336 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:42:43,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:42:43,833 INFO L129 PetriNetUnfolder]: 778/3484 cut-off events. [2021-08-13 02:42:43,833 INFO L130 PetriNetUnfolder]: For 5223/21599 co-relation queries the response was YES. [2021-08-13 02:42:43,845 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13865 conditions, 3484 events. 778/3484 cut-off events. For 5223/21599 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 41296 event pairs, 1 based on Foata normal form. 56/3445 useless extension candidates. Maximal degree in co-relation 12859. Up to 789 conditions per place. [2021-08-13 02:42:43,866 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 840 selfloop transitions, 235 changer transitions 10/1106 dead transitions. [2021-08-13 02:42:43,867 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 1106 transitions, 13128 flow [2021-08-13 02:42:43,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:42:43,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:42:43,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:42:43,869 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:42:43,869 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:42:43,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:42:43,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:42:43,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:42:43,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:42:43,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:42:43,871 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:42:43,871 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 52 predicate places. [2021-08-13 02:42:43,871 INFO L482 AbstractCegarLoop]: Abstraction has has 103 places, 1106 transitions, 13128 flow [2021-08-13 02:42:43,871 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:42:43,872 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:42:43,872 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] [2021-08-13 02:42:43,872 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-13 02:42:43,872 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:42:43,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:42:43,872 INFO L82 PathProgramCache]: Analyzing trace with hash -756318963, now seen corresponding path program 6 times [2021-08-13 02:42:43,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:42:43,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69510688] [2021-08-13 02:42:43,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:42:43,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:42:43,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:43,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:42:43,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:43,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:42:43,904 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:42:43,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:42:43,912 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 02:42:43,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 02:42:43,924 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 02:42:43,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 02:42:43,943 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 02:42:43,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 02:42:43,965 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 02:42:43,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 02:42:43,992 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:42:43,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:42:44,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:42:44,074 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:42:44,074 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69510688] [2021-08-13 02:42:44,074 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69510688] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:42:44,074 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:42:44,075 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:42:44,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376383847] [2021-08-13 02:42:44,075 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:42:44,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:42:44,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:42:44,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:42:44,076 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:42:44,076 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 1106 transitions, 13128 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:42:44,076 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:42:44,076 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:42:44,076 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:42:44,991 INFO L129 PetriNetUnfolder]: 824/3711 cut-off events. [2021-08-13 02:42:44,991 INFO L130 PetriNetUnfolder]: For 6608/28239 co-relation queries the response was YES. [2021-08-13 02:42:45,004 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16570 conditions, 3711 events. 824/3711 cut-off events. For 6608/28239 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 44619 event pairs, 0 based on Foata normal form. 148/3779 useless extension candidates. Maximal degree in co-relation 15375. Up to 888 conditions per place. [2021-08-13 02:42:45,024 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1223 selfloop transitions, 348 changer transitions 12/1604 dead transitions. [2021-08-13 02:42:45,025 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 1604 transitions, 22270 flow [2021-08-13 02:42:45,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:42:45,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:42:45,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:42:45,027 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:42:45,027 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:42:45,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:42:45,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:42:45,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:42:45,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:42:45,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:42:45,030 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:42:45,030 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 60 predicate places. [2021-08-13 02:42:45,030 INFO L482 AbstractCegarLoop]: Abstraction has has 111 places, 1604 transitions, 22270 flow [2021-08-13 02:42:45,030 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:42:45,030 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:42:45,030 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] [2021-08-13 02:42:45,030 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-13 02:42:45,031 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:42:45,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:42:45,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1004427847, now seen corresponding path program 7 times [2021-08-13 02:42:45,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:42:45,032 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708169880] [2021-08-13 02:42:45,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:42:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:42:45,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:45,056 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:42:45,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:45,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:42:45,061 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:42:45,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:42:45,070 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 02:42:45,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 02:42:45,082 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 02:42:45,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 02:42:45,100 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 02:42:45,100 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 02:42:45,122 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-08-13 02:42:45,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-08-13 02:42:45,153 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:42:45,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:42:45,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:42:45,177 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:42:45,177 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708169880] [2021-08-13 02:42:45,177 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708169880] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:42:45,178 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:42:45,178 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:42:45,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709140463] [2021-08-13 02:42:45,178 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:42:45,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:42:45,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:42:45,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:42:45,179 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:42:45,179 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 1604 transitions, 22270 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:42:45,180 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:42:45,180 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:42:45,180 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:42:46,849 INFO L129 PetriNetUnfolder]: 839/3852 cut-off events. [2021-08-13 02:42:46,850 INFO L130 PetriNetUnfolder]: For 8867/41767 co-relation queries the response was YES. [2021-08-13 02:42:46,859 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19015 conditions, 3852 events. 839/3852 cut-off events. For 8867/41767 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 46980 event pairs, 0 based on Foata normal form. 225/3999 useless extension candidates. Maximal degree in co-relation 17626. Up to 945 conditions per place. [2021-08-13 02:42:46,879 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1460 selfloop transitions, 390 changer transitions 14/1885 dead transitions. [2021-08-13 02:42:46,879 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 1885 transitions, 29932 flow [2021-08-13 02:42:46,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:42:46,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:42:46,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:42:46,881 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:42:46,881 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:42:46,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:42:46,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:42:46,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:42:46,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:42:46,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:42:46,883 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:42:46,884 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 68 predicate places. [2021-08-13 02:42:46,884 INFO L482 AbstractCegarLoop]: Abstraction has has 119 places, 1885 transitions, 29932 flow [2021-08-13 02:42:46,884 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:42:46,884 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:42:46,884 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] [2021-08-13 02:42:46,884 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-13 02:42:46,884 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:42:46,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:42:46,885 INFO L82 PathProgramCache]: Analyzing trace with hash -31496413, now seen corresponding path program 8 times [2021-08-13 02:42:46,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:42:46,885 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076013923] [2021-08-13 02:42:46,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:42:46,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:42:46,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:46,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:42:46,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:46,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:42:46,911 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:42:46,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:42:46,919 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 02:42:46,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 02:42:46,932 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 02:42:46,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 02:42:46,947 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 02:42:46,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 02:42:46,969 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 02:42:46,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 02:42:46,995 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:42:46,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:42:47,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:42:47,018 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:42:47,018 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076013923] [2021-08-13 02:42:47,018 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076013923] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:42:47,018 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:42:47,018 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:42:47,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362155906] [2021-08-13 02:42:47,018 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:42:47,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:42:47,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:42:47,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:42:47,019 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:42:47,019 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 1885 transitions, 29932 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:42:47,020 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:42:47,020 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:42:47,020 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:42:49,369 INFO L129 PetriNetUnfolder]: 837/3837 cut-off events. [2021-08-13 02:42:49,370 INFO L130 PetriNetUnfolder]: For 13015/84029 co-relation queries the response was YES. [2021-08-13 02:42:49,378 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20841 conditions, 3837 events. 837/3837 cut-off events. For 13015/84029 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 46702 event pairs, 0 based on Foata normal form. 581/4345 useless extension candidates. Maximal degree in co-relation 19316. Up to 947 conditions per place. [2021-08-13 02:42:49,400 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1461 selfloop transitions, 388 changer transitions 17/1887 dead transitions. [2021-08-13 02:42:49,400 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 1887 transitions, 33696 flow [2021-08-13 02:42:49,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:42:49,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:42:49,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:42:49,402 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:42:49,402 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:42:49,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:42:49,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:42:49,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:42:49,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:42:49,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:42:49,404 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:42:49,405 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 76 predicate places. [2021-08-13 02:42:49,405 INFO L482 AbstractCegarLoop]: Abstraction has has 127 places, 1887 transitions, 33696 flow [2021-08-13 02:42:49,405 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:42:49,405 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:42:49,405 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] [2021-08-13 02:42:49,405 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-13 02:42:49,405 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:42:49,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:42:49,405 INFO L82 PathProgramCache]: Analyzing trace with hash -840438793, now seen corresponding path program 9 times [2021-08-13 02:42:49,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:42:49,406 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548926691] [2021-08-13 02:42:49,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:42:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:42:49,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:49,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:42:49,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:49,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:42:49,439 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:42:49,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:42:49,447 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 02:42:49,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 02:42:49,458 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 02:42:49,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 02:42:49,473 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 02:42:49,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 02:42:49,493 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 02:42:49,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 02:42:49,517 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:42:49,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:42:49,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:42:49,621 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:42:49,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548926691] [2021-08-13 02:42:49,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548926691] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:42:49,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:42:49,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:42:49,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334967606] [2021-08-13 02:42:49,623 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:42:49,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:42:49,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:42:49,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:42:49,624 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:42:49,624 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 1887 transitions, 33696 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:42:49,624 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:42:49,624 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:42:49,624 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:42:52,353 INFO L129 PetriNetUnfolder]: 828/4021 cut-off events. [2021-08-13 02:42:52,353 INFO L130 PetriNetUnfolder]: For 15864/69016 co-relation queries the response was YES. [2021-08-13 02:42:52,381 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23537 conditions, 4021 events. 828/4021 cut-off events. For 15864/69016 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 50187 event pairs, 0 based on Foata normal form. 362/4292 useless extension candidates. Maximal degree in co-relation 21666. Up to 999 conditions per place. [2021-08-13 02:42:52,414 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1509 selfloop transitions, 390 changer transitions 19/1939 dead transitions. [2021-08-13 02:42:52,415 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 1939 transitions, 38468 flow [2021-08-13 02:42:52,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:42:52,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:42:52,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:42:52,430 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:42:52,430 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:42:52,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:42:52,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:42:52,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:42:52,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:42:52,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:42:52,432 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:42:52,432 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 84 predicate places. [2021-08-13 02:42:52,432 INFO L482 AbstractCegarLoop]: Abstraction has has 135 places, 1939 transitions, 38468 flow [2021-08-13 02:42:52,433 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:42:52,433 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:42:52,433 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] [2021-08-13 02:42:52,433 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-13 02:42:52,433 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:42:52,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:42:52,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1057762089, now seen corresponding path program 10 times [2021-08-13 02:42:52,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:42:52,434 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64630115] [2021-08-13 02:42:52,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:42:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:42:52,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:52,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:42:52,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:52,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:42:52,480 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:42:52,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:42:52,487 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 02:42:52,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 02:42:52,514 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 02:42:52,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 02:42:52,528 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 02:42:52,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 02:42:52,560 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 02:42:52,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 02:42:52,583 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:42:52,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:42:52,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:42:52,621 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:42:52,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64630115] [2021-08-13 02:42:52,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64630115] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:42:52,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:42:52,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:42:52,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508525514] [2021-08-13 02:42:52,623 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:42:52,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:42:52,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:42:52,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:42:52,623 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:42:52,624 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 1939 transitions, 38468 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:42:52,624 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:42:52,624 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:42:52,624 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:42:55,133 INFO L129 PetriNetUnfolder]: 825/4129 cut-off events. [2021-08-13 02:42:55,133 INFO L130 PetriNetUnfolder]: For 26826/127356 co-relation queries the response was YES. [2021-08-13 02:42:55,142 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25795 conditions, 4129 events. 825/4129 cut-off events. For 26826/127356 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 52034 event pairs, 0 based on Foata normal form. 581/4620 useless extension candidates. Maximal degree in co-relation 23754. Up to 1002 conditions per place. [2021-08-13 02:42:55,165 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1510 selfloop transitions, 389 changer transitions 22/1942 dead transitions. [2021-08-13 02:42:55,165 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 1942 transitions, 42370 flow [2021-08-13 02:42:55,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:42:55,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:42:55,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:42:55,167 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:42:55,167 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:42:55,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:42:55,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:42:55,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:42:55,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:42:55,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:42:55,169 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:42:55,169 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 92 predicate places. [2021-08-13 02:42:55,170 INFO L482 AbstractCegarLoop]: Abstraction has has 143 places, 1942 transitions, 42370 flow [2021-08-13 02:42:55,170 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:42:55,170 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:42:55,170 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] [2021-08-13 02:42:55,170 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-13 02:42:55,170 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:42:55,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:42:55,170 INFO L82 PathProgramCache]: Analyzing trace with hash -489135357, now seen corresponding path program 11 times [2021-08-13 02:42:55,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:42:55,171 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957231960] [2021-08-13 02:42:55,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:42:55,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:42:55,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:55,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:42:55,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:55,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:42:55,193 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:42:55,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:42:55,200 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 02:42:55,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 02:42:55,212 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 02:42:55,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 02:42:55,227 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 02:42:55,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 02:42:55,247 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 02:42:55,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 02:42:55,273 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:42:55,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:42:55,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:42:55,297 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:42:55,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957231960] [2021-08-13 02:42:55,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957231960] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:42:55,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:42:55,297 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:42:55,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984391833] [2021-08-13 02:42:55,297 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:42:55,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:42:55,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:42:55,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:42:55,298 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:42:55,299 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 1942 transitions, 42370 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:42:55,299 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:42:55,299 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:42:55,299 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:42:57,613 INFO L129 PetriNetUnfolder]: 818/4073 cut-off events. [2021-08-13 02:42:57,613 INFO L130 PetriNetUnfolder]: For 32377/128586 co-relation queries the response was YES. [2021-08-13 02:42:57,622 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27649 conditions, 4073 events. 818/4073 cut-off events. For 32377/128586 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 51167 event pairs, 0 based on Foata normal form. 514/4489 useless extension candidates. Maximal degree in co-relation 25359. Up to 1016 conditions per place. [2021-08-13 02:42:57,640 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1505 selfloop transitions, 406 changer transitions 24/1956 dead transitions. [2021-08-13 02:42:57,641 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 1956 transitions, 46548 flow [2021-08-13 02:42:57,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:42:57,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:42:57,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:42:57,642 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:42:57,642 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:42:57,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:42:57,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:42:57,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:42:57,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:42:57,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:42:57,644 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:42:57,644 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 100 predicate places. [2021-08-13 02:42:57,644 INFO L482 AbstractCegarLoop]: Abstraction has has 151 places, 1956 transitions, 46548 flow [2021-08-13 02:42:57,645 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:42:57,645 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:42:57,645 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] [2021-08-13 02:42:57,645 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-13 02:42:57,645 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:42:57,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:42:57,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1259879727, now seen corresponding path program 12 times [2021-08-13 02:42:57,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:42:57,645 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774251072] [2021-08-13 02:42:57,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:42:57,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:42:57,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:57,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:42:57,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:42:57,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:42:57,667 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:42:57,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:42:57,674 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 02:42:57,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 02:42:57,684 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 02:42:57,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 02:42:57,697 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 02:42:57,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 02:42:57,716 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 02:42:57,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 02:42:57,738 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:42:57,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:42:57,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:42:57,759 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:42:57,759 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774251072] [2021-08-13 02:42:57,760 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774251072] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:42:57,760 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:42:57,760 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:42:57,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171993602] [2021-08-13 02:42:57,760 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:42:57,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:42:57,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:42:57,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:42:57,761 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:42:57,761 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 1956 transitions, 46548 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:42:57,761 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:42:57,761 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:42:57,761 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:43:00,352 INFO L129 PetriNetUnfolder]: 818/4067 cut-off events. [2021-08-13 02:43:00,352 INFO L130 PetriNetUnfolder]: For 41454/149589 co-relation queries the response was YES. [2021-08-13 02:43:00,362 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29557 conditions, 4067 events. 818/4067 cut-off events. For 41454/149589 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 51067 event pairs, 0 based on Foata normal form. 514/4483 useless extension candidates. Maximal degree in co-relation 27132. Up to 1015 conditions per place. [2021-08-13 02:43:00,382 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1514 selfloop transitions, 394 changer transitions 26/1955 dead transitions. [2021-08-13 02:43:00,382 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 1955 transitions, 50392 flow [2021-08-13 02:43:00,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:43:00,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:43:00,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:43:00,383 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:43:00,383 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:43:00,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:43:00,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:43:00,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:43:00,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:43:00,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:43:00,385 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:43:00,385 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 108 predicate places. [2021-08-13 02:43:00,385 INFO L482 AbstractCegarLoop]: Abstraction has has 159 places, 1955 transitions, 50392 flow [2021-08-13 02:43:00,386 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:43:00,386 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:43:00,386 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] [2021-08-13 02:43:00,386 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-13 02:43:00,386 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:43:00,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:43:00,386 INFO L82 PathProgramCache]: Analyzing trace with hash 534815667, now seen corresponding path program 13 times [2021-08-13 02:43:00,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:43:00,386 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251703240] [2021-08-13 02:43:00,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:43:00,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:43:00,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:43:00,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:43:00,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:43:00,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:43:00,519 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:43:00,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:43:00,526 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 02:43:00,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 02:43:00,538 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 02:43:00,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 02:43:00,555 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 02:43:00,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 02:43:00,574 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 02:43:00,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 02:43:00,597 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:43:00,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:43:00,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:43:00,618 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:43:00,619 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251703240] [2021-08-13 02:43:00,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251703240] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:43:00,619 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:43:00,619 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:43:00,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911787009] [2021-08-13 02:43:00,620 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:43:00,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:43:00,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:43:00,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:43:00,620 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:43:00,621 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 1955 transitions, 50392 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:43:00,621 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:43:00,621 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:43:00,621 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:43:03,246 INFO L129 PetriNetUnfolder]: 816/4078 cut-off events. [2021-08-13 02:43:03,247 INFO L130 PetriNetUnfolder]: For 67479/258878 co-relation queries the response was YES. [2021-08-13 02:43:03,254 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31539 conditions, 4078 events. 816/4078 cut-off events. For 67479/258878 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 51345 event pairs, 0 based on Foata normal form. 674/4655 useless extension candidates. Maximal degree in co-relation 28947. Up to 1017 conditions per place. [2021-08-13 02:43:03,274 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1503 selfloop transitions, 404 changer transitions 29/1957 dead transitions. [2021-08-13 02:43:03,275 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 1957 transitions, 54316 flow [2021-08-13 02:43:03,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:43:03,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:43:03,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:43:03,276 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:43:03,276 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:43:03,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:43:03,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:43:03,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:43:03,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:43:03,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:43:03,278 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:43:03,278 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 116 predicate places. [2021-08-13 02:43:03,278 INFO L482 AbstractCegarLoop]: Abstraction has has 167 places, 1957 transitions, 54316 flow [2021-08-13 02:43:03,278 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:43:03,278 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:43:03,278 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] [2021-08-13 02:43:03,278 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-13 02:43:03,278 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:43:03,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:43:03,279 INFO L82 PathProgramCache]: Analyzing trace with hash 814454623, now seen corresponding path program 14 times [2021-08-13 02:43:03,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:43:03,279 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066051526] [2021-08-13 02:43:03,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:43:03,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:43:03,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:43:03,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:43:03,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:43:03,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:43:03,300 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:43:03,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:43:03,307 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 02:43:03,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 02:43:03,317 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 02:43:03,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 02:43:03,331 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 02:43:03,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 02:43:03,349 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-08-13 02:43:03,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-08-13 02:43:03,373 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:43:03,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:43:03,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:43:03,394 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:43:03,395 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066051526] [2021-08-13 02:43:03,395 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066051526] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:43:03,395 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:43:03,395 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:43:03,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339537495] [2021-08-13 02:43:03,395 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:43:03,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:43:03,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:43:03,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:43:03,396 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:43:03,396 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 1957 transitions, 54316 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:43:03,396 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:43:03,396 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:43:03,396 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:43:06,351 INFO L129 PetriNetUnfolder]: 810/4216 cut-off events. [2021-08-13 02:43:06,352 INFO L130 PetriNetUnfolder]: For 52580/146812 co-relation queries the response was YES. [2021-08-13 02:43:06,360 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34021 conditions, 4216 events. 810/4216 cut-off events. For 52580/146812 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 53932 event pairs, 0 based on Foata normal form. 362/4477 useless extension candidates. Maximal degree in co-relation 31170. Up to 1030 conditions per place. [2021-08-13 02:43:06,380 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1509 selfloop transitions, 409 changer transitions 31/1970 dead transitions. [2021-08-13 02:43:06,380 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 1970 transitions, 58578 flow [2021-08-13 02:43:06,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:43:06,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:43:06,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:43:06,381 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:43:06,381 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:43:06,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:43:06,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:43:06,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:43:06,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:43:06,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:43:06,383 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:43:06,383 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 124 predicate places. [2021-08-13 02:43:06,384 INFO L482 AbstractCegarLoop]: Abstraction has has 175 places, 1970 transitions, 58578 flow [2021-08-13 02:43:06,384 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:43:06,384 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:43:06,384 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] [2021-08-13 02:43:06,384 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-13 02:43:06,384 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:43:06,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:43:06,384 INFO L82 PathProgramCache]: Analyzing trace with hash -814560853, now seen corresponding path program 15 times [2021-08-13 02:43:06,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:43:06,384 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110629092] [2021-08-13 02:43:06,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:43:06,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:43:06,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:43:06,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:43:06,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:43:06,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:43:06,405 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:43:06,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:43:06,411 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 02:43:06,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 02:43:06,421 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 02:43:06,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 02:43:06,435 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-08-13 02:43:06,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-08-13 02:43:06,464 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-08-13 02:43:06,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-08-13 02:43:06,487 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:43:06,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:43:06,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:43:06,509 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:43:06,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110629092] [2021-08-13 02:43:06,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110629092] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:43:06,510 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:43:06,510 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:43:06,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180751175] [2021-08-13 02:43:06,510 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:43:06,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:43:06,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:43:06,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:43:06,511 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:43:06,511 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 1970 transitions, 58578 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:43:06,511 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:43:06,511 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:43:06,511 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:43:09,450 INFO L129 PetriNetUnfolder]: 804/4176 cut-off events. [2021-08-13 02:43:09,450 INFO L130 PetriNetUnfolder]: For 69182/189734 co-relation queries the response was YES. [2021-08-13 02:43:09,458 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35993 conditions, 4176 events. 804/4176 cut-off events. For 69182/189734 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 53370 event pairs, 0 based on Foata normal form. 403/4469 useless extension candidates. Maximal degree in co-relation 32871. Up to 1043 conditions per place. [2021-08-13 02:43:09,478 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1532 selfloop transitions, 397 changer transitions 33/1983 dead transitions. [2021-08-13 02:43:09,478 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 1983 transitions, 62892 flow [2021-08-13 02:43:09,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:43:09,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:43:09,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:43:09,479 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:43:09,479 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:43:09,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:43:09,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:43:09,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:43:09,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:43:09,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:43:09,481 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:43:09,481 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 132 predicate places. [2021-08-13 02:43:09,482 INFO L482 AbstractCegarLoop]: Abstraction has has 183 places, 1983 transitions, 62892 flow [2021-08-13 02:43:09,482 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:43:09,482 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:43:09,482 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] [2021-08-13 02:43:09,482 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-13 02:43:09,482 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:43:09,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:43:09,482 INFO L82 PathProgramCache]: Analyzing trace with hash 513407567, now seen corresponding path program 16 times [2021-08-13 02:43:09,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:43:09,482 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797503471] [2021-08-13 02:43:09,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:43:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:43:09,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:43:09,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:43:09,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:43:09,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:43:09,499 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:43:09,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:43:09,505 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 02:43:09,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 02:43:09,516 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 02:43:09,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 02:43:09,530 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 02:43:09,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 02:43:09,548 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 02:43:09,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 02:43:09,572 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:43:09,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:43:09,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:43:09,593 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:43:09,594 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797503471] [2021-08-13 02:43:09,594 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797503471] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:43:09,594 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:43:09,594 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:43:09,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716318854] [2021-08-13 02:43:09,594 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:43:09,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:43:09,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:43:09,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:43:09,595 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:43:09,595 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 1983 transitions, 62892 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:43:09,595 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:43:09,595 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:43:09,595 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:43:12,477 INFO L129 PetriNetUnfolder]: 804/4175 cut-off events. [2021-08-13 02:43:12,477 INFO L130 PetriNetUnfolder]: For 81657/212021 co-relation queries the response was YES. [2021-08-13 02:43:12,487 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37939 conditions, 4175 events. 804/4175 cut-off events. For 81657/212021 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 53336 event pairs, 0 based on Foata normal form. 403/4471 useless extension candidates. Maximal degree in co-relation 34674. Up to 1042 conditions per place. [2021-08-13 02:43:12,510 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1515 selfloop transitions, 409 changer transitions 37/1982 dead transitions. [2021-08-13 02:43:12,510 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 1982 transitions, 66782 flow [2021-08-13 02:43:12,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:43:12,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:43:12,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:43:12,511 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:43:12,511 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:43:12,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:43:12,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:43:12,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:43:12,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:43:12,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:43:12,513 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:43:12,513 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 140 predicate places. [2021-08-13 02:43:12,513 INFO L482 AbstractCegarLoop]: Abstraction has has 191 places, 1982 transitions, 66782 flow [2021-08-13 02:43:12,513 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:43:12,513 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:43:12,513 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] [2021-08-13 02:43:12,513 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-13 02:43:12,514 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:43:12,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:43:12,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1885841467, now seen corresponding path program 17 times [2021-08-13 02:43:12,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:43:12,514 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794900403] [2021-08-13 02:43:12,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:43:12,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:43:12,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:43:12,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:43:12,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:43:12,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:43:12,533 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:43:12,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:43:12,540 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 02:43:12,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 02:43:12,550 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 02:43:12,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 02:43:12,563 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 02:43:12,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 02:43:12,581 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-08-13 02:43:12,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-08-13 02:43:12,604 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:43:12,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:43:12,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:43:12,625 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:43:12,625 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794900403] [2021-08-13 02:43:12,625 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794900403] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:43:12,625 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:43:12,625 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:43:12,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639431986] [2021-08-13 02:43:12,626 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:43:12,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:43:12,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:43:12,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:43:12,626 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:43:12,627 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 1982 transitions, 66782 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:43:12,627 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:43:12,627 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:43:12,627 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:43:15,354 INFO L129 PetriNetUnfolder]: 804/4186 cut-off events. [2021-08-13 02:43:15,354 INFO L130 PetriNetUnfolder]: For 86704/205584 co-relation queries the response was YES. [2021-08-13 02:43:15,367 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39920 conditions, 4186 events. 804/4186 cut-off events. For 86704/205584 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 53500 event pairs, 0 based on Foata normal form. 362/4436 useless extension candidates. Maximal degree in co-relation 36514. Up to 1041 conditions per place. [2021-08-13 02:43:15,390 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1523 selfloop transitions, 397 changer transitions 40/1981 dead transitions. [2021-08-13 02:43:15,390 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 1981 transitions, 70668 flow [2021-08-13 02:43:15,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:43:15,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:43:15,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:43:15,391 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:43:15,391 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:43:15,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:43:15,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:43:15,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:43:15,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:43:15,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:43:15,393 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:43:15,393 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 148 predicate places. [2021-08-13 02:43:15,393 INFO L482 AbstractCegarLoop]: Abstraction has has 199 places, 1981 transitions, 70668 flow [2021-08-13 02:43:15,393 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:43:15,393 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:43:15,393 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] [2021-08-13 02:43:15,393 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-08-13 02:43:15,393 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:43:15,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:43:15,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1906370179, now seen corresponding path program 18 times [2021-08-13 02:43:15,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:43:15,394 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886534225] [2021-08-13 02:43:15,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:43:15,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:43:15,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:43:15,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:43:15,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:43:15,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:43:15,414 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:43:15,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:43:15,420 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 02:43:15,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 02:43:15,431 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 02:43:15,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 02:43:15,444 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-08-13 02:43:15,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-08-13 02:43:15,474 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 02:43:15,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 02:43:15,497 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:43:15,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:43:15,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:43:15,518 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:43:15,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886534225] [2021-08-13 02:43:15,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886534225] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:43:15,518 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:43:15,518 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:43:15,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173477309] [2021-08-13 02:43:15,518 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:43:15,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:43:15,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:43:15,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:43:15,519 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:43:15,520 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 1981 transitions, 70668 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:43:15,520 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:43:15,520 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:43:15,520 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:43:18,947 INFO L129 PetriNetUnfolder]: 804/4262 cut-off events. [2021-08-13 02:43:18,947 INFO L130 PetriNetUnfolder]: For 169221/457720 co-relation queries the response was YES. [2021-08-13 02:43:18,958 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42092 conditions, 4262 events. 804/4262 cut-off events. For 169221/457720 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 54834 event pairs, 0 based on Foata normal form. 674/4829 useless extension candidates. Maximal degree in co-relation 38547. Up to 1040 conditions per place. [2021-08-13 02:43:18,982 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1524 selfloop transitions, 391 changer transitions 44/1980 dead transitions. [2021-08-13 02:43:18,982 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 1980 transitions, 74550 flow [2021-08-13 02:43:18,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:43:18,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:43:18,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:43:18,984 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:43:18,984 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:43:18,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:43:18,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:43:18,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:43:18,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:43:18,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:43:18,985 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:43:18,985 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 156 predicate places. [2021-08-13 02:43:18,985 INFO L482 AbstractCegarLoop]: Abstraction has has 207 places, 1980 transitions, 74550 flow [2021-08-13 02:43:18,986 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:43:18,986 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:43:18,986 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] [2021-08-13 02:43:18,986 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-08-13 02:43:18,986 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:43:18,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:43:18,986 INFO L82 PathProgramCache]: Analyzing trace with hash 790862053, now seen corresponding path program 19 times [2021-08-13 02:43:18,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:43:18,986 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118209814] [2021-08-13 02:43:18,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:43:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:43:19,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:43:19,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:43:19,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:43:19,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:43:19,005 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:43:19,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:43:19,012 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 02:43:19,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 02:43:19,022 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 02:43:19,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 02:43:19,036 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-08-13 02:43:19,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-08-13 02:43:19,065 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 02:43:19,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 02:43:19,088 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:43:19,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:43:19,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:43:19,109 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:43:19,109 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118209814] [2021-08-13 02:43:19,110 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118209814] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:43:19,110 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:43:19,110 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:43:19,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188024480] [2021-08-13 02:43:19,110 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:43:19,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:43:19,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:43:19,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:43:19,111 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:43:19,111 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 1980 transitions, 74550 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:43:19,111 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:43:19,111 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:43:19,111 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:43:22,485 INFO L129 PetriNetUnfolder]: 798/4337 cut-off events. [2021-08-13 02:43:22,485 INFO L130 PetriNetUnfolder]: For 148431/340048 co-relation queries the response was YES. [2021-08-13 02:43:22,495 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44923 conditions, 4337 events. 798/4337 cut-off events. For 148431/340048 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 56367 event pairs, 0 based on Foata normal form. 514/4724 useless extension candidates. Maximal degree in co-relation 40919. Up to 1082 conditions per place. [2021-08-13 02:43:22,518 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1554 selfloop transitions, 401 changer transitions 46/2022 dead transitions. [2021-08-13 02:43:22,519 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 2022 transitions, 80148 flow [2021-08-13 02:43:22,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:43:22,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:43:22,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:43:22,520 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:43:22,520 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:43:22,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:43:22,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:43:22,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:43:22,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:43:22,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:43:22,521 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:43:22,521 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 164 predicate places. [2021-08-13 02:43:22,522 INFO L482 AbstractCegarLoop]: Abstraction has has 215 places, 2022 transitions, 80148 flow [2021-08-13 02:43:22,522 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:43:22,522 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:43:22,522 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] [2021-08-13 02:43:22,522 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-08-13 02:43:22,522 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:43:22,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:43:22,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1012566471, now seen corresponding path program 20 times [2021-08-13 02:43:22,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:43:22,522 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082828073] [2021-08-13 02:43:22,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:43:22,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:43:22,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:43:22,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:43:22,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:43:22,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:43:22,541 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:43:22,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:43:22,547 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 02:43:22,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 02:43:22,557 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 02:43:22,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 02:43:22,571 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 02:43:22,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 02:43:22,589 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-08-13 02:43:22,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-08-13 02:43:22,612 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:43:22,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:43:22,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:43:22,633 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:43:22,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082828073] [2021-08-13 02:43:22,633 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082828073] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:43:22,633 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:43:22,633 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:43:22,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45126392] [2021-08-13 02:43:22,634 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:43:22,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:43:22,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:43:22,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:43:22,634 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:43:22,635 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 2022 transitions, 80148 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:43:22,635 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:43:22,635 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:43:22,635 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:43:25,857 INFO L129 PetriNetUnfolder]: 798/4314 cut-off events. [2021-08-13 02:43:25,858 INFO L130 PetriNetUnfolder]: For 168796/372339 co-relation queries the response was YES. [2021-08-13 02:43:25,866 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46838 conditions, 4314 events. 798/4314 cut-off events. For 168796/372339 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 56004 event pairs, 0 based on Foata normal form. 514/4708 useless extension candidates. Maximal degree in co-relation 42685. Up to 1081 conditions per place. [2021-08-13 02:43:25,890 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1550 selfloop transitions, 402 changer transitions 48/2021 dead transitions. [2021-08-13 02:43:25,891 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 2021 transitions, 84108 flow [2021-08-13 02:43:25,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:43:25,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:43:25,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:43:25,892 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:43:25,892 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:43:25,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:43:25,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:43:25,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:43:25,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:43:25,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:43:25,893 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:43:25,894 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 172 predicate places. [2021-08-13 02:43:25,894 INFO L482 AbstractCegarLoop]: Abstraction has has 223 places, 2021 transitions, 84108 flow [2021-08-13 02:43:25,894 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:43:25,894 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:43:25,894 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] [2021-08-13 02:43:25,894 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-08-13 02:43:25,894 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:43:25,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:43:25,894 INFO L82 PathProgramCache]: Analyzing trace with hash -256170619, now seen corresponding path program 21 times [2021-08-13 02:43:25,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:43:25,894 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071477426] [2021-08-13 02:43:25,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:43:25,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:43:25,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:43:25,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:43:25,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:43:25,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:43:25,912 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:43:25,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:43:25,919 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 02:43:25,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 02:43:25,929 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 02:43:25,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 02:43:25,942 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 02:43:25,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 02:43:25,960 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 02:43:25,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 02:43:25,982 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:43:25,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:43:26,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:43:26,003 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:43:26,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071477426] [2021-08-13 02:43:26,004 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071477426] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:43:26,004 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:43:26,004 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:43:26,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223205056] [2021-08-13 02:43:26,004 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:43:26,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:43:26,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:43:26,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:43:26,005 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:43:26,005 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 2021 transitions, 84108 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:43:26,005 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:43:26,005 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:43:26,005 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:43:29,450 INFO L129 PetriNetUnfolder]: 798/4338 cut-off events. [2021-08-13 02:43:29,450 INFO L130 PetriNetUnfolder]: For 215267/478135 co-relation queries the response was YES. [2021-08-13 02:43:29,461 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48890 conditions, 4338 events. 798/4338 cut-off events. For 215267/478135 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 56421 event pairs, 0 based on Foata normal form. 581/4795 useless extension candidates. Maximal degree in co-relation 44590. Up to 1080 conditions per place. [2021-08-13 02:43:29,487 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1546 selfloop transitions, 402 changer transitions 51/2020 dead transitions. [2021-08-13 02:43:29,488 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 2020 transitions, 88064 flow [2021-08-13 02:43:29,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:43:29,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:43:29,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:43:29,489 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:43:29,489 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:43:29,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:43:29,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:43:29,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:43:29,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:43:29,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:43:29,491 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:43:29,491 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 180 predicate places. [2021-08-13 02:43:29,491 INFO L482 AbstractCegarLoop]: Abstraction has has 231 places, 2020 transitions, 88064 flow [2021-08-13 02:43:29,491 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:43:29,491 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:43:29,491 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] [2021-08-13 02:43:29,491 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-08-13 02:43:29,491 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:43:29,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:43:29,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1192743663, now seen corresponding path program 22 times [2021-08-13 02:43:29,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:43:29,492 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143890851] [2021-08-13 02:43:29,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:43:29,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:43:29,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:43:29,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:43:29,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:43:29,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:43:29,511 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:43:29,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:43:29,518 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 02:43:29,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 02:43:29,529 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 02:43:29,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 02:43:29,542 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 02:43:29,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 02:43:29,561 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 02:43:29,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 02:43:29,584 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:43:29,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:43:29,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:43:29,606 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:43:29,606 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143890851] [2021-08-13 02:43:29,606 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143890851] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:43:29,606 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:43:29,606 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:43:29,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385021293] [2021-08-13 02:43:29,607 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:43:29,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:43:29,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:43:29,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:43:29,608 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:43:29,608 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 2020 transitions, 88064 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:43:29,608 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:43:29,608 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:43:29,608 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:43:33,390 INFO L129 PetriNetUnfolder]: 792/4440 cut-off events. [2021-08-13 02:43:33,390 INFO L130 PetriNetUnfolder]: For 167987/327947 co-relation queries the response was YES. [2021-08-13 02:43:33,399 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51431 conditions, 4440 events. 792/4440 cut-off events. For 167987/327947 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 58311 event pairs, 0 based on Foata normal form. 362/4680 useless extension candidates. Maximal degree in co-relation 46804. Up to 1093 conditions per place. [2021-08-13 02:43:33,423 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1558 selfloop transitions, 401 changer transitions 53/2033 dead transitions. [2021-08-13 02:43:33,423 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 2033 transitions, 92660 flow [2021-08-13 02:43:33,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:43:33,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:43:33,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:43:33,425 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:43:33,425 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:43:33,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:43:33,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:43:33,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:43:33,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:43:33,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:43:33,427 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:43:33,427 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 188 predicate places. [2021-08-13 02:43:33,427 INFO L482 AbstractCegarLoop]: Abstraction has has 239 places, 2033 transitions, 92660 flow [2021-08-13 02:43:33,427 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:43:33,427 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:43:33,427 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] [2021-08-13 02:43:33,427 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-08-13 02:43:33,427 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:43:33,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:43:33,427 INFO L82 PathProgramCache]: Analyzing trace with hash 691114569, now seen corresponding path program 23 times [2021-08-13 02:43:33,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:43:33,428 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801012567] [2021-08-13 02:43:33,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:43:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:43:33,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:43:33,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:43:33,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:43:33,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:43:33,447 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:43:33,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:43:33,453 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 02:43:33,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 02:43:33,463 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 02:43:33,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 02:43:33,477 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-08-13 02:43:33,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-08-13 02:43:33,505 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-08-13 02:43:33,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-08-13 02:43:33,528 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:43:33,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:43:33,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:43:33,551 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:43:33,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801012567] [2021-08-13 02:43:33,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801012567] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:43:33,551 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:43:33,551 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:43:33,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721710703] [2021-08-13 02:43:33,551 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:43:33,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:43:33,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:43:33,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:43:33,552 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:43:33,552 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 2033 transitions, 92660 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:43:33,552 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:43:33,552 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:43:33,553 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:43:37,166 INFO L129 PetriNetUnfolder]: 792/4377 cut-off events. [2021-08-13 02:43:37,166 INFO L130 PetriNetUnfolder]: For 271428/563812 co-relation queries the response was YES. [2021-08-13 02:43:37,176 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53233 conditions, 4377 events. 792/4377 cut-off events. For 271428/563812 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 57236 event pairs, 0 based on Foata normal form. 581/4832 useless extension candidates. Maximal degree in co-relation 48456. Up to 1092 conditions per place. [2021-08-13 02:43:37,202 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1556 selfloop transitions, 399 changer transitions 56/2032 dead transitions. [2021-08-13 02:43:37,203 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 2032 transitions, 96636 flow [2021-08-13 02:43:37,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:43:37,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:43:37,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:43:37,204 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:43:37,204 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:43:37,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:43:37,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:43:37,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:43:37,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:43:37,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:43:37,205 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:43:37,205 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 196 predicate places. [2021-08-13 02:43:37,205 INFO L482 AbstractCegarLoop]: Abstraction has has 247 places, 2032 transitions, 96636 flow [2021-08-13 02:43:37,206 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:43:37,206 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:43:37,206 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] [2021-08-13 02:43:37,206 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-08-13 02:43:37,206 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:43:37,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:43:37,206 INFO L82 PathProgramCache]: Analyzing trace with hash 39709473, now seen corresponding path program 24 times [2021-08-13 02:43:37,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:43:37,206 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773801002] [2021-08-13 02:43:37,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:43:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:43:37,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:43:37,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:43:37,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:43:37,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:43:37,224 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:43:37,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:43:37,231 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 02:43:37,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 02:43:37,240 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 02:43:37,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 02:43:37,254 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 02:43:37,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 02:43:37,271 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 02:43:37,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 02:43:37,293 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:43:37,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:43:37,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:43:37,314 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:43:37,314 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773801002] [2021-08-13 02:43:37,314 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773801002] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:43:37,314 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:43:37,314 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:43:37,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408184430] [2021-08-13 02:43:37,314 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:43:37,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:43:37,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:43:37,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:43:37,315 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:43:37,315 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 2032 transitions, 96636 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:43:37,315 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:43:37,315 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:43:37,315 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:43:41,312 INFO L129 PetriNetUnfolder]: 792/4356 cut-off events. [2021-08-13 02:43:41,312 INFO L130 PetriNetUnfolder]: For 301043/608185 co-relation queries the response was YES. [2021-08-13 02:43:41,321 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55160 conditions, 4356 events. 792/4356 cut-off events. For 301043/608185 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 56888 event pairs, 0 based on Foata normal form. 581/4813 useless extension candidates. Maximal degree in co-relation 50235. Up to 1091 conditions per place. [2021-08-13 02:43:41,348 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1552 selfloop transitions, 398 changer transitions 60/2031 dead transitions. [2021-08-13 02:43:41,348 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 2031 transitions, 100608 flow [2021-08-13 02:43:41,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:43:41,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:43:41,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:43:41,349 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:43:41,349 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:43:41,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:43:41,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:43:41,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:43:41,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:43:41,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:43:41,351 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:43:41,351 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 204 predicate places. [2021-08-13 02:43:41,351 INFO L482 AbstractCegarLoop]: Abstraction has has 255 places, 2031 transitions, 100608 flow [2021-08-13 02:43:41,351 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:43:41,351 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:43:41,351 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] [2021-08-13 02:43:41,351 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-08-13 02:43:41,351 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:43:41,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:43:41,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1859241101, now seen corresponding path program 25 times [2021-08-13 02:43:41,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:43:41,352 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181198428] [2021-08-13 02:43:41,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:43:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:43:41,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:43:41,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:43:41,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:43:41,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:43:41,370 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:43:41,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:43:41,377 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 02:43:41,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 02:43:41,386 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 02:43:41,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 02:43:41,399 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 02:43:41,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 02:43:41,416 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 02:43:41,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 02:43:41,438 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:43:41,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:43:41,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:43:41,459 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:43:41,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181198428] [2021-08-13 02:43:41,459 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181198428] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:43:41,459 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:43:41,459 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:43:41,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963036686] [2021-08-13 02:43:41,459 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:43:41,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:43:41,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:43:41,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:43:41,460 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:43:41,460 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 2031 transitions, 100608 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:43:41,461 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:43:41,461 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:43:41,461 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:43:45,897 INFO L129 PetriNetUnfolder]: 774/4603 cut-off events. [2021-08-13 02:43:45,897 INFO L130 PetriNetUnfolder]: For 235278/419886 co-relation queries the response was YES. [2021-08-13 02:43:45,907 INFO L84 FinitePrefix]: Finished finitePrefix Result has 59401 conditions, 4603 events. 774/4603 cut-off events. For 235278/419886 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 61678 event pairs, 0 based on Foata normal form. 362/4820 useless extension candidates. Maximal degree in co-relation 53518. Up to 1161 conditions per place. [2021-08-13 02:43:45,937 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1605 selfloop transitions, 413 changer transitions 62/2101 dead transitions. [2021-08-13 02:43:45,937 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 2101 transitions, 108268 flow [2021-08-13 02:43:45,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:43:45,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:43:45,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:43:45,938 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:43:45,938 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:43:45,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:43:45,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:43:45,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:43:45,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:43:45,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:43:45,940 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:43:45,940 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 212 predicate places. [2021-08-13 02:43:45,940 INFO L482 AbstractCegarLoop]: Abstraction has has 263 places, 2101 transitions, 108268 flow [2021-08-13 02:43:45,940 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:43:45,940 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:43:45,940 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] [2021-08-13 02:43:45,940 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-08-13 02:43:45,940 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:43:45,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:43:45,940 INFO L82 PathProgramCache]: Analyzing trace with hash -2054376981, now seen corresponding path program 26 times [2021-08-13 02:43:45,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:43:45,941 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405385085] [2021-08-13 02:43:45,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:43:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:43:45,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:43:45,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:43:45,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:43:45,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:43:45,957 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:43:45,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:43:45,963 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 02:43:45,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 02:43:45,973 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 02:43:45,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 02:43:45,986 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 02:43:45,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 02:43:46,004 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 02:43:46,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 02:43:46,026 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:43:46,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:43:46,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:43:46,047 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:43:46,047 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405385085] [2021-08-13 02:43:46,048 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405385085] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:43:46,048 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:43:46,048 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:43:46,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467205158] [2021-08-13 02:43:46,048 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:43:46,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:43:46,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:43:46,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:43:46,049 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:43:46,049 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 2101 transitions, 108268 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:43:46,049 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:43:46,049 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:43:46,049 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:43:50,568 INFO L129 PetriNetUnfolder]: 774/4678 cut-off events. [2021-08-13 02:43:50,568 INFO L130 PetriNetUnfolder]: For 374732/711390 co-relation queries the response was YES. [2021-08-13 02:43:50,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61682 conditions, 4678 events. 774/4678 cut-off events. For 374732/711390 co-relation queries the response was YES. Maximal size of possible extension queue 672. Compared 62995 event pairs, 0 based on Foata normal form. 581/5117 useless extension candidates. Maximal degree in co-relation 55627. Up to 1160 conditions per place. [2021-08-13 02:43:50,607 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1602 selfloop transitions, 412 changer transitions 65/2100 dead transitions. [2021-08-13 02:43:50,607 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 2100 transitions, 112374 flow [2021-08-13 02:43:50,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:43:50,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:43:50,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:43:50,608 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:43:50,608 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:43:50,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:43:50,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:43:50,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:43:50,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:43:50,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:43:50,613 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:43:50,613 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 220 predicate places. [2021-08-13 02:43:50,613 INFO L482 AbstractCegarLoop]: Abstraction has has 271 places, 2100 transitions, 112374 flow [2021-08-13 02:43:50,613 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:43:50,613 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:43:50,613 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] [2021-08-13 02:43:50,613 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-08-13 02:43:50,613 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:43:50,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:43:50,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1837950749, now seen corresponding path program 27 times [2021-08-13 02:43:50,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:43:50,614 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975456387] [2021-08-13 02:43:50,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:43:50,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:43:50,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:43:50,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:43:50,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:43:50,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:43:50,631 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:43:50,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:43:50,637 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 02:43:50,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 02:43:50,647 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 02:43:50,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 02:43:50,660 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 02:43:50,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 02:43:50,677 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 02:43:50,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 02:43:50,700 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:43:50,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:43:50,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:43:50,721 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:43:50,721 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975456387] [2021-08-13 02:43:50,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975456387] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:43:50,721 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:43:50,721 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:43:50,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781775617] [2021-08-13 02:43:50,721 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:43:50,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:43:50,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:43:50,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:43:50,722 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:43:50,722 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 2100 transitions, 112374 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:43:50,722 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:43:50,722 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:43:50,722 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:43:55,283 INFO L129 PetriNetUnfolder]: 774/4602 cut-off events. [2021-08-13 02:43:55,284 INFO L130 PetriNetUnfolder]: For 362425/649450 co-relation queries the response was YES. [2021-08-13 02:43:55,294 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63511 conditions, 4602 events. 774/4602 cut-off events. For 362425/649450 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 61617 event pairs, 0 based on Foata normal form. 514/4969 useless extension candidates. Maximal degree in co-relation 57286. Up to 1159 conditions per place. [2021-08-13 02:43:55,322 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1600 selfloop transitions, 411 changer transitions 67/2099 dead transitions. [2021-08-13 02:43:55,322 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 2099 transitions, 116476 flow [2021-08-13 02:43:55,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:43:55,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:43:55,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:43:55,323 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:43:55,323 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:43:55,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:43:55,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:43:55,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:43:55,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:43:55,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:43:55,325 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:43:55,325 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 228 predicate places. [2021-08-13 02:43:55,325 INFO L482 AbstractCegarLoop]: Abstraction has has 279 places, 2099 transitions, 116476 flow [2021-08-13 02:43:55,328 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:43:55,328 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:43:55,328 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] [2021-08-13 02:43:55,328 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-08-13 02:43:55,328 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:43:55,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:43:55,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1942780177, now seen corresponding path program 28 times [2021-08-13 02:43:55,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:43:55,328 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352172135] [2021-08-13 02:43:55,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:43:55,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:43:55,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:43:55,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:43:55,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:43:55,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:43:55,345 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:43:55,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:43:55,351 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 02:43:55,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 02:43:55,361 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 02:43:55,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 02:43:55,374 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 02:43:55,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 02:43:55,391 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 02:43:55,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 02:43:55,413 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:43:55,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:43:55,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:43:55,435 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:43:55,435 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352172135] [2021-08-13 02:43:55,435 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352172135] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:43:55,435 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:43:55,435 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:43:55,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177140119] [2021-08-13 02:43:55,436 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:43:55,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:43:55,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:43:55,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:43:55,436 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:43:55,437 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 2099 transitions, 116476 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:43:55,437 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:43:55,437 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:43:55,437 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:44:00,023 INFO L129 PetriNetUnfolder]: 774/4584 cut-off events. [2021-08-13 02:44:00,023 INFO L130 PetriNetUnfolder]: For 394559/693510 co-relation queries the response was YES. [2021-08-13 02:44:00,033 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65510 conditions, 4584 events. 774/4584 cut-off events. For 394559/693510 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 61322 event pairs, 0 based on Foata normal form. 514/4953 useless extension candidates. Maximal degree in co-relation 59117. Up to 1158 conditions per place. [2021-08-13 02:44:00,061 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1593 selfloop transitions, 415 changer transitions 69/2098 dead transitions. [2021-08-13 02:44:00,061 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 2098 transitions, 120574 flow [2021-08-13 02:44:00,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:44:00,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:44:00,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:44:00,062 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:44:00,062 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:44:00,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:44:00,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:44:00,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:44:00,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:44:00,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:44:00,065 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:44:00,065 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 236 predicate places. [2021-08-13 02:44:00,065 INFO L482 AbstractCegarLoop]: Abstraction has has 287 places, 2098 transitions, 120574 flow [2021-08-13 02:44:00,065 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:44:00,065 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:44:00,065 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] [2021-08-13 02:44:00,065 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-08-13 02:44:00,065 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:44:00,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:44:00,066 INFO L82 PathProgramCache]: Analyzing trace with hash -623048101, now seen corresponding path program 29 times [2021-08-13 02:44:00,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:44:00,066 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363679467] [2021-08-13 02:44:00,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:44:00,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:44:00,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:44:00,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:44:00,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:44:00,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:44:00,083 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:44:00,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:44:00,089 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 02:44:00,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 02:44:00,099 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 02:44:00,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 02:44:00,112 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 02:44:00,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 02:44:00,130 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 02:44:00,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 02:44:00,152 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:44:00,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:44:00,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:44:00,173 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:44:00,173 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363679467] [2021-08-13 02:44:00,173 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363679467] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:44:00,173 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:44:00,173 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:44:00,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528329812] [2021-08-13 02:44:00,173 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:44:00,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:44:00,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:44:00,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:44:00,174 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:44:00,174 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 2098 transitions, 120574 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:44:00,174 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:44:00,174 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:44:00,175 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:44:05,022 INFO L129 PetriNetUnfolder]: 774/4589 cut-off events. [2021-08-13 02:44:05,022 INFO L130 PetriNetUnfolder]: For 365027/622947 co-relation queries the response was YES. [2021-08-13 02:44:05,033 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67574 conditions, 4589 events. 774/4589 cut-off events. For 365027/622947 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 61448 event pairs, 0 based on Foata normal form. 403/4849 useless extension candidates. Maximal degree in co-relation 61015. Up to 1157 conditions per place. [2021-08-13 02:44:05,062 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1596 selfloop transitions, 408 changer transitions 72/2097 dead transitions. [2021-08-13 02:44:05,063 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 2097 transitions, 124668 flow [2021-08-13 02:44:05,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:44:05,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:44:05,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:44:05,064 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:44:05,064 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:44:05,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:44:05,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:44:05,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:44:05,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:44:05,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:44:05,065 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:44:05,065 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 244 predicate places. [2021-08-13 02:44:05,065 INFO L482 AbstractCegarLoop]: Abstraction has has 295 places, 2097 transitions, 124668 flow [2021-08-13 02:44:05,065 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:44:05,065 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:44:05,066 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] [2021-08-13 02:44:05,066 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-08-13 02:44:05,066 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:44:05,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:44:05,066 INFO L82 PathProgramCache]: Analyzing trace with hash -840040611, now seen corresponding path program 30 times [2021-08-13 02:44:05,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:44:05,066 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763730988] [2021-08-13 02:44:05,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:44:05,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:44:05,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:44:05,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:44:05,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:44:05,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:44:05,085 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:44:05,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:44:05,092 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 02:44:05,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 02:44:05,102 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 02:44:05,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 02:44:05,115 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 02:44:05,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 02:44:05,133 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 02:44:05,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 02:44:05,155 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:44:05,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:44:05,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:44:05,177 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:44:05,177 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763730988] [2021-08-13 02:44:05,177 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763730988] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:44:05,177 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:44:05,177 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:44:05,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396872541] [2021-08-13 02:44:05,178 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:44:05,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:44:05,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:44:05,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:44:05,178 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:44:05,179 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 2097 transitions, 124668 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:44:05,179 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:44:05,179 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:44:05,179 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:44:09,988 INFO L129 PetriNetUnfolder]: 774/4672 cut-off events. [2021-08-13 02:44:09,988 INFO L130 PetriNetUnfolder]: For 562735/1009774 co-relation queries the response was YES. [2021-08-13 02:44:10,000 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69873 conditions, 4672 events. 774/4672 cut-off events. For 562735/1009774 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 62839 event pairs, 0 based on Foata normal form. 617/5145 useless extension candidates. Maximal degree in co-relation 63150. Up to 1156 conditions per place. [2021-08-13 02:44:10,031 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1588 selfloop transitions, 410 changer transitions 77/2096 dead transitions. [2021-08-13 02:44:10,032 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 2096 transitions, 128758 flow [2021-08-13 02:44:10,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:44:10,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:44:10,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:44:10,033 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:44:10,033 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:44:10,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:44:10,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:44:10,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:44:10,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:44:10,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:44:10,034 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:44:10,034 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 252 predicate places. [2021-08-13 02:44:10,034 INFO L482 AbstractCegarLoop]: Abstraction has has 303 places, 2096 transitions, 128758 flow [2021-08-13 02:44:10,034 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:44:10,034 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:44:10,034 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] [2021-08-13 02:44:10,035 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-08-13 02:44:10,035 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:44:10,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:44:10,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1481459457, now seen corresponding path program 31 times [2021-08-13 02:44:10,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:44:10,035 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759216857] [2021-08-13 02:44:10,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:44:10,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:44:10,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:44:10,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:44:10,049 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:44:10,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:44:10,053 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:44:10,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:44:10,059 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 02:44:10,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 02:44:10,069 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 02:44:10,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 02:44:10,092 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 02:44:10,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 02:44:10,110 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-08-13 02:44:10,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-08-13 02:44:10,134 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:44:10,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:44:10,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:44:10,157 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:44:10,158 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759216857] [2021-08-13 02:44:10,158 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759216857] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:44:10,158 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:44:10,158 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:44:10,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062405319] [2021-08-13 02:44:10,158 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:44:10,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:44:10,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:44:10,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:44:10,159 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:44:10,159 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 2096 transitions, 128758 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:44:10,159 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:44:10,159 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:44:10,159 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:44:15,665 INFO L129 PetriNetUnfolder]: 768/5302 cut-off events. [2021-08-13 02:44:15,666 INFO L130 PetriNetUnfolder]: For 458457/740854 co-relation queries the response was YES. [2021-08-13 02:44:15,678 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79884 conditions, 5302 events. 768/5302 cut-off events. For 458457/740854 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 75140 event pairs, 0 based on Foata normal form. 372/5497 useless extension candidates. Maximal degree in co-relation 70899. Up to 1376 conditions per place. [2021-08-13 02:44:15,712 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1708 selfloop transitions, 508 changer transitions 79/2316 dead transitions. [2021-08-13 02:44:15,712 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 2316 transitions, 146988 flow [2021-08-13 02:44:15,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:44:15,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:44:15,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:44:15,741 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:44:15,741 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:44:15,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:44:15,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:44:15,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:44:15,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:44:15,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:44:15,746 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:44:15,746 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 260 predicate places. [2021-08-13 02:44:15,746 INFO L482 AbstractCegarLoop]: Abstraction has has 311 places, 2316 transitions, 146988 flow [2021-08-13 02:44:15,746 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:44:15,746 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:44:15,747 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] [2021-08-13 02:44:15,747 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-08-13 02:44:15,747 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:44:15,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:44:15,747 INFO L82 PathProgramCache]: Analyzing trace with hash -455830095, now seen corresponding path program 32 times [2021-08-13 02:44:15,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:44:15,747 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38418539] [2021-08-13 02:44:15,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:44:15,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:44:15,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:44:15,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:44:15,783 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:44:15,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:44:15,787 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:44:15,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:44:15,793 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 02:44:15,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 02:44:15,803 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 02:44:15,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 02:44:15,816 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 02:44:15,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 02:44:15,834 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 02:44:15,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 02:44:15,856 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:44:15,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:44:15,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:44:15,879 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:44:15,879 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38418539] [2021-08-13 02:44:15,879 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38418539] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:44:15,879 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:44:15,879 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:44:15,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045090602] [2021-08-13 02:44:15,879 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:44:15,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:44:15,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:44:15,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:44:15,880 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:44:15,880 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 2316 transitions, 146988 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:44:15,880 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:44:15,880 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:44:15,881 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:44:22,052 INFO L129 PetriNetUnfolder]: 768/5300 cut-off events. [2021-08-13 02:44:22,052 INFO L130 PetriNetUnfolder]: For 488626/780638 co-relation queries the response was YES. [2021-08-13 02:44:22,065 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82144 conditions, 5300 events. 768/5300 cut-off events. For 488626/780638 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 75111 event pairs, 0 based on Foata normal form. 396/5515 useless extension candidates. Maximal degree in co-relation 72939. Up to 1375 conditions per place. [2021-08-13 02:44:22,099 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1718 selfloop transitions, 495 changer transitions 81/2315 dead transitions. [2021-08-13 02:44:22,099 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 2315 transitions, 151512 flow [2021-08-13 02:44:22,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:44:22,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:44:22,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:44:22,100 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:44:22,100 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:44:22,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:44:22,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:44:22,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:44:22,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:44:22,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:44:22,101 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:44:22,102 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 268 predicate places. [2021-08-13 02:44:22,102 INFO L482 AbstractCegarLoop]: Abstraction has has 319 places, 2315 transitions, 151512 flow [2021-08-13 02:44:22,102 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:44:22,102 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:44:22,102 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] [2021-08-13 02:44:22,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-08-13 02:44:22,102 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:44:22,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:44:22,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1059929887, now seen corresponding path program 33 times [2021-08-13 02:44:22,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:44:22,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850052648] [2021-08-13 02:44:22,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:44:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:44:22,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:44:22,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:44:22,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:44:22,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:44:22,119 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:44:22,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:44:22,125 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 02:44:22,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 02:44:22,135 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 02:44:22,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 02:44:22,148 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 02:44:22,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 02:44:22,167 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-08-13 02:44:22,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-08-13 02:44:22,191 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:44:22,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:44:22,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:44:22,214 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:44:22,214 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850052648] [2021-08-13 02:44:22,214 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850052648] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:44:22,214 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:44:22,214 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:44:22,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938296328] [2021-08-13 02:44:22,214 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:44:22,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:44:22,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:44:22,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:44:22,215 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:44:22,215 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 2315 transitions, 151512 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:44:22,215 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:44:22,215 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:44:22,215 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:44:28,709 INFO L129 PetriNetUnfolder]: 768/5313 cut-off events. [2021-08-13 02:44:28,709 INFO L130 PetriNetUnfolder]: For 737380/1243229 co-relation queries the response was YES. [2021-08-13 02:44:28,720 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84448 conditions, 5313 events. 768/5313 cut-off events. For 737380/1243229 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 75398 event pairs, 0 based on Foata normal form. 622/5755 useless extension candidates. Maximal degree in co-relation 75025. Up to 1374 conditions per place. [2021-08-13 02:44:28,753 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1716 selfloop transitions, 493 changer transitions 84/2314 dead transitions. [2021-08-13 02:44:28,754 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 2314 transitions, 156032 flow [2021-08-13 02:44:28,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:44:28,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:44:28,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:44:28,754 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:44:28,755 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:44:28,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:44:28,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:44:28,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:44:28,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:44:28,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:44:28,756 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:44:28,756 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 276 predicate places. [2021-08-13 02:44:28,756 INFO L482 AbstractCegarLoop]: Abstraction has has 327 places, 2314 transitions, 156032 flow [2021-08-13 02:44:28,756 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:44:28,756 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:44:28,756 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] [2021-08-13 02:44:28,756 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-08-13 02:44:28,756 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:44:28,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:44:28,757 INFO L82 PathProgramCache]: Analyzing trace with hash 868543709, now seen corresponding path program 34 times [2021-08-13 02:44:28,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:44:28,757 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826582703] [2021-08-13 02:44:28,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:44:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:44:28,768 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:44:28,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:44:28,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:44:28,769 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:44:28,773 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:44:28,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:44:28,779 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 02:44:28,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 02:44:28,788 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 02:44:28,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 02:44:28,802 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 02:44:28,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 02:44:28,819 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 02:44:28,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 02:44:28,840 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:44:28,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:44:28,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:44:28,862 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:44:28,862 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826582703] [2021-08-13 02:44:28,862 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826582703] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:44:28,862 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:44:28,862 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:44:28,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307771137] [2021-08-13 02:44:28,862 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:44:28,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:44:28,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:44:28,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:44:28,863 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:44:28,863 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 2314 transitions, 156032 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:44:28,863 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:44:28,863 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:44:28,863 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:44:35,563 INFO L129 PetriNetUnfolder]: 768/5362 cut-off events. [2021-08-13 02:44:35,564 INFO L130 PetriNetUnfolder]: For 559607/871625 co-relation queries the response was YES. [2021-08-13 02:44:35,574 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86856 conditions, 5362 events. 768/5362 cut-off events. For 559607/871625 co-relation queries the response was YES. Maximal size of possible extension queue 778. Compared 76295 event pairs, 0 based on Foata normal form. 388/5570 useless extension candidates. Maximal degree in co-relation 77217. Up to 1373 conditions per place. [2021-08-13 02:44:35,607 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1710 selfloop transitions, 496 changer transitions 86/2313 dead transitions. [2021-08-13 02:44:35,607 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 2313 transitions, 160548 flow [2021-08-13 02:44:35,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:44:35,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:44:35,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:44:35,608 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:44:35,608 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:44:35,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:44:35,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:44:35,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:44:35,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:44:35,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:44:35,609 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:44:35,610 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 284 predicate places. [2021-08-13 02:44:35,610 INFO L482 AbstractCegarLoop]: Abstraction has has 335 places, 2313 transitions, 160548 flow [2021-08-13 02:44:35,610 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:44:35,610 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:44:35,610 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] [2021-08-13 02:44:35,610 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-08-13 02:44:35,610 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:44:35,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:44:35,610 INFO L82 PathProgramCache]: Analyzing trace with hash 28559047, now seen corresponding path program 35 times [2021-08-13 02:44:35,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:44:35,610 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195272210] [2021-08-13 02:44:35,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:44:35,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:44:35,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:44:35,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:44:35,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:44:35,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:44:35,626 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:44:35,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:44:35,632 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 02:44:35,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 02:44:35,642 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 02:44:35,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 02:44:35,655 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 02:44:35,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 02:44:35,672 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 02:44:35,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 02:44:35,694 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:44:35,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:44:35,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:44:35,717 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:44:35,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195272210] [2021-08-13 02:44:35,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195272210] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:44:35,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:44:35,717 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:44:35,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120378433] [2021-08-13 02:44:35,717 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:44:35,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:44:35,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:44:35,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:44:35,718 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:44:35,718 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 2313 transitions, 160548 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:44:35,718 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:44:35,718 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:44:35,718 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:44:42,604 INFO L129 PetriNetUnfolder]: 768/5322 cut-off events. [2021-08-13 02:44:42,605 INFO L130 PetriNetUnfolder]: For 1080828/1819605 co-relation queries the response was YES. [2021-08-13 02:44:42,615 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88998 conditions, 5322 events. 768/5322 cut-off events. For 1080828/1819605 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 75585 event pairs, 0 based on Foata normal form. 800/5936 useless extension candidates. Maximal degree in co-relation 79145. Up to 1372 conditions per place. [2021-08-13 02:44:42,648 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1708 selfloop transitions, 494 changer transitions 89/2312 dead transitions. [2021-08-13 02:44:42,649 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 2312 transitions, 165060 flow [2021-08-13 02:44:42,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:44:42,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:44:42,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:44:42,650 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:44:42,650 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:44:42,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:44:42,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:44:42,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:44:42,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:44:42,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:44:42,651 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:44:42,651 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 292 predicate places. [2021-08-13 02:44:42,651 INFO L482 AbstractCegarLoop]: Abstraction has has 343 places, 2312 transitions, 165060 flow [2021-08-13 02:44:42,651 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:44:42,651 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:44:42,651 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] [2021-08-13 02:44:42,651 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-08-13 02:44:42,651 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:44:42,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:44:42,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1340348765, now seen corresponding path program 36 times [2021-08-13 02:44:42,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:44:42,652 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383509637] [2021-08-13 02:44:42,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:44:42,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:44:42,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:44:42,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:44:42,664 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:44:42,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:44:42,668 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:44:42,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:44:42,674 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 02:44:42,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 02:44:42,683 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 02:44:42,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 02:44:42,696 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-08-13 02:44:42,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-08-13 02:44:42,722 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-08-13 02:44:42,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-08-13 02:44:42,745 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:44:42,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:44:42,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:44:42,766 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:44:42,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383509637] [2021-08-13 02:44:42,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383509637] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:44:42,767 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:44:42,767 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:44:42,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745475990] [2021-08-13 02:44:42,767 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:44:42,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:44:42,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:44:42,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:44:42,767 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:44:42,768 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 2312 transitions, 165060 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:44:42,768 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:44:42,768 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:44:42,768 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:44:49,832 INFO L129 PetriNetUnfolder]: 749/5574 cut-off events. [2021-08-13 02:44:49,833 INFO L130 PetriNetUnfolder]: For 762041/1162471 co-relation queries the response was YES. [2021-08-13 02:44:49,844 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94530 conditions, 5574 events. 749/5574 cut-off events. For 762041/1162471 co-relation queries the response was YES. Maximal size of possible extension queue 818. Compared 80870 event pairs, 0 based on Foata normal form. 477/5856 useless extension candidates. Maximal degree in co-relation 83265. Up to 1449 conditions per place. [2021-08-13 02:44:49,878 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1752 selfloop transitions, 525 changer transitions 91/2389 dead transitions. [2021-08-13 02:44:49,879 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 2389 transitions, 175340 flow [2021-08-13 02:44:49,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:44:49,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:44:49,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:44:49,880 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:44:49,880 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:44:49,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:44:49,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:44:49,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:44:49,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:44:49,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:44:49,881 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:44:49,881 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 300 predicate places. [2021-08-13 02:44:49,881 INFO L482 AbstractCegarLoop]: Abstraction has has 351 places, 2389 transitions, 175340 flow [2021-08-13 02:44:49,881 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:44:49,881 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:44:49,881 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] [2021-08-13 02:44:49,882 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-08-13 02:44:49,882 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:44:49,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:44:49,882 INFO L82 PathProgramCache]: Analyzing trace with hash 680158195, now seen corresponding path program 37 times [2021-08-13 02:44:49,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:44:49,882 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056616881] [2021-08-13 02:44:49,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:44:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:44:49,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:44:49,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:44:49,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:44:49,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:44:49,897 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:44:49,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:44:49,903 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 02:44:49,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 02:44:49,913 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 02:44:49,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 02:44:49,926 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 02:44:49,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 02:44:49,943 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-08-13 02:44:49,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-08-13 02:44:49,966 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:44:49,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:44:49,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:44:49,988 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:44:49,988 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056616881] [2021-08-13 02:44:49,988 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056616881] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:44:49,988 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:44:49,988 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:44:49,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387014955] [2021-08-13 02:44:49,988 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:44:49,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:44:49,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:44:49,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:44:49,989 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:44:49,989 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 2389 transitions, 175340 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:44:49,989 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:44:49,989 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:44:49,990 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:44:57,142 INFO L129 PetriNetUnfolder]: 749/5585 cut-off events. [2021-08-13 02:44:57,142 INFO L130 PetriNetUnfolder]: For 911108/1416474 co-relation queries the response was YES. [2021-08-13 02:44:57,152 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96895 conditions, 5585 events. 749/5585 cut-off events. For 911108/1416474 co-relation queries the response was YES. Maximal size of possible extension queue 816. Compared 81129 event pairs, 0 based on Foata normal form. 536/5925 useless extension candidates. Maximal degree in co-relation 85390. Up to 1448 conditions per place. [2021-08-13 02:44:57,187 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1767 selfloop transitions, 507 changer transitions 93/2388 dead transitions. [2021-08-13 02:44:57,187 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 2388 transitions, 180000 flow [2021-08-13 02:44:57,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:44:57,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:44:57,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:44:57,188 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:44:57,188 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:44:57,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:44:57,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:44:57,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:44:57,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:44:57,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:44:57,189 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:44:57,190 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 308 predicate places. [2021-08-13 02:44:57,190 INFO L482 AbstractCegarLoop]: Abstraction has has 359 places, 2388 transitions, 180000 flow [2021-08-13 02:44:57,190 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:44:57,190 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:44:57,190 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] [2021-08-13 02:44:57,190 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-08-13 02:44:57,190 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:44:57,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:44:57,190 INFO L82 PathProgramCache]: Analyzing trace with hash -206378783, now seen corresponding path program 38 times [2021-08-13 02:44:57,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:44:57,190 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915686760] [2021-08-13 02:44:57,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:44:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:44:57,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:44:57,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:44:57,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:44:57,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:44:57,206 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:44:57,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:44:57,212 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 02:44:57,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 02:44:57,222 INFO L142 QuantifierPusher]: treesize reduction 27, result has 53.4 percent of original size [2021-08-13 02:44:57,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-08-13 02:44:57,235 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 02:44:57,235 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 02:44:57,253 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 02:44:57,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 02:44:57,274 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:44:57,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:44:57,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:44:57,296 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:44:57,296 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915686760] [2021-08-13 02:44:57,296 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915686760] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:44:57,296 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:44:57,296 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:44:57,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883086760] [2021-08-13 02:44:57,296 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:44:57,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:44:57,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:44:57,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:44:57,297 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:44:57,297 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 2388 transitions, 180000 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:44:57,297 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:44:57,297 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:44:57,297 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:45:04,645 INFO L129 PetriNetUnfolder]: 749/5617 cut-off events. [2021-08-13 02:45:04,645 INFO L130 PetriNetUnfolder]: For 671691/969006 co-relation queries the response was YES. [2021-08-13 02:45:04,655 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99324 conditions, 5617 events. 749/5617 cut-off events. For 671691/969006 co-relation queries the response was YES. Maximal size of possible extension queue 823. Compared 81678 event pairs, 0 based on Foata normal form. 351/5776 useless extension candidates. Maximal degree in co-relation 87581. Up to 1447 conditions per place. [2021-08-13 02:45:04,690 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1765 selfloop transitions, 504 changer transitions 97/2387 dead transitions. [2021-08-13 02:45:04,691 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 2387 transitions, 184656 flow [2021-08-13 02:45:04,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:45:04,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:45:04,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:45:04,692 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:45:04,692 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:45:04,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:45:04,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:45:04,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:45:04,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:45:04,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:45:04,693 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:45:04,693 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 316 predicate places. [2021-08-13 02:45:04,693 INFO L482 AbstractCegarLoop]: Abstraction has has 367 places, 2387 transitions, 184656 flow [2021-08-13 02:45:04,693 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:45:04,693 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:45:04,693 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] [2021-08-13 02:45:04,693 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-08-13 02:45:04,694 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:45:04,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:45:04,694 INFO L82 PathProgramCache]: Analyzing trace with hash 904283587, now seen corresponding path program 39 times [2021-08-13 02:45:04,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:45:04,694 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230747813] [2021-08-13 02:45:04,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:45:04,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:45:04,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:45:04,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:45:04,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:45:04,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:45:04,718 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:45:04,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:45:04,725 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 02:45:04,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 02:45:04,734 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 02:45:04,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 02:45:04,746 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 02:45:04,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 02:45:04,763 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-08-13 02:45:04,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-08-13 02:45:04,786 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:45:04,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:45:04,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:45:04,808 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:45:04,808 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230747813] [2021-08-13 02:45:04,808 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230747813] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:45:04,808 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:45:04,808 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:45:04,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891708447] [2021-08-13 02:45:04,808 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:45:04,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:45:04,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:45:04,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:45:04,809 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:45:04,809 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 2387 transitions, 184656 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:45:04,809 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:45:04,809 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:45:04,809 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:45:12,398 INFO L129 PetriNetUnfolder]: 749/5580 cut-off events. [2021-08-13 02:45:12,398 INFO L130 PetriNetUnfolder]: For 1024937/1560331 co-relation queries the response was YES. [2021-08-13 02:45:12,408 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101542 conditions, 5580 events. 749/5580 cut-off events. For 1024937/1560331 co-relation queries the response was YES. Maximal size of possible extension queue 816. Compared 80916 event pairs, 0 based on Foata normal form. 536/5922 useless extension candidates. Maximal degree in co-relation 89563. Up to 1446 conditions per place. [2021-08-13 02:45:12,443 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1746 selfloop transitions, 520 changer transitions 99/2386 dead transitions. [2021-08-13 02:45:12,443 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 2386 transitions, 189308 flow [2021-08-13 02:45:12,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:45:12,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:45:12,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:45:12,444 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:45:12,444 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:45:12,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:45:12,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:45:12,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:45:12,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:45:12,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:45:12,446 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:45:12,446 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 324 predicate places. [2021-08-13 02:45:12,446 INFO L482 AbstractCegarLoop]: Abstraction has has 375 places, 2386 transitions, 189308 flow [2021-08-13 02:45:12,446 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:45:12,446 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:45:12,446 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] [2021-08-13 02:45:12,446 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-08-13 02:45:12,446 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:45:12,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:45:12,447 INFO L82 PathProgramCache]: Analyzing trace with hash 142799669, now seen corresponding path program 40 times [2021-08-13 02:45:12,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:45:12,447 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533147104] [2021-08-13 02:45:12,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:45:12,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:45:12,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:45:12,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:45:12,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:45:12,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:45:12,507 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:45:12,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:45:12,529 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 02:45:12,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 02:45:12,539 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 02:45:12,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 02:45:12,561 INFO L142 QuantifierPusher]: treesize reduction 36, result has 52.0 percent of original size [2021-08-13 02:45:12,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-08-13 02:45:12,593 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 02:45:12,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 02:45:12,728 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-08-13 02:45:12,730 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:45:12,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:45:12,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:45:12,770 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:45:12,770 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533147104] [2021-08-13 02:45:12,770 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533147104] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:45:12,770 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:45:12,770 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:45:12,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702672414] [2021-08-13 02:45:12,770 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:45:12,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:45:12,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:45:12,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:45:12,771 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:45:12,771 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 2386 transitions, 189308 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:45:12,771 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:45:12,771 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:45:12,771 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:45:19,909 INFO L129 PetriNetUnfolder]: 749/5565 cut-off events. [2021-08-13 02:45:19,909 INFO L130 PetriNetUnfolder]: For 1084345/1634753 co-relation queries the response was YES. [2021-08-13 02:45:19,919 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103825 conditions, 5565 events. 749/5565 cut-off events. For 1084345/1634753 co-relation queries the response was YES. Maximal size of possible extension queue 820. Compared 80650 event pairs, 0 based on Foata normal form. 536/5910 useless extension candidates. Maximal degree in co-relation 91612. Up to 1445 conditions per place. [2021-08-13 02:45:19,955 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1743 selfloop transitions, 519 changer transitions 102/2385 dead transitions. [2021-08-13 02:45:19,955 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 2385 transitions, 193956 flow [2021-08-13 02:45:19,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:45:19,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:45:19,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:45:19,956 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:45:19,956 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:45:19,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:45:19,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:45:19,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:45:19,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:45:19,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:45:19,958 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:45:19,958 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 332 predicate places. [2021-08-13 02:45:19,958 INFO L482 AbstractCegarLoop]: Abstraction has has 383 places, 2385 transitions, 193956 flow [2021-08-13 02:45:19,958 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:45:19,958 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:45:19,958 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] [2021-08-13 02:45:19,958 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-08-13 02:45:19,958 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:45:19,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:45:19,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1101754621, now seen corresponding path program 41 times [2021-08-13 02:45:19,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:45:19,958 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110217093] [2021-08-13 02:45:19,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:45:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:45:19,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:45:19,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:45:19,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:45:19,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:45:19,974 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:45:19,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:45:19,981 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 02:45:19,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 02:45:19,990 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 02:45:19,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 02:45:20,012 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-08-13 02:45:20,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-08-13 02:45:20,042 INFO L142 QuantifierPusher]: treesize reduction 45, result has 51.1 percent of original size [2021-08-13 02:45:20,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-08-13 02:45:20,065 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:45:20,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:45:20,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:45:20,088 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:45:20,088 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110217093] [2021-08-13 02:45:20,088 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110217093] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:45:20,088 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:45:20,088 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:45:20,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243423429] [2021-08-13 02:45:20,088 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:45:20,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:45:20,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:45:20,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:45:20,089 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:45:20,089 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 2385 transitions, 193956 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:45:20,089 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:45:20,089 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:45:20,089 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:45:27,583 INFO L129 PetriNetUnfolder]: 749/5580 cut-off events. [2021-08-13 02:45:27,584 INFO L130 PetriNetUnfolder]: For 792361/1115044 co-relation queries the response was YES. [2021-08-13 02:45:27,595 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106197 conditions, 5580 events. 749/5580 cut-off events. For 792361/1115044 co-relation queries the response was YES. Maximal size of possible extension queue 816. Compared 80978 event pairs, 0 based on Foata normal form. 351/5738 useless extension candidates. Maximal degree in co-relation 93752. Up to 1444 conditions per place. [2021-08-13 02:45:27,633 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1740 selfloop transitions, 519 changer transitions 104/2384 dead transitions. [2021-08-13 02:45:27,633 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 2384 transitions, 198600 flow [2021-08-13 02:45:27,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:45:27,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:45:27,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:45:27,634 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:45:27,634 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:45:27,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:45:27,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:45:27,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:45:27,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:45:27,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:45:27,635 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:45:27,635 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 340 predicate places. [2021-08-13 02:45:27,636 INFO L482 AbstractCegarLoop]: Abstraction has has 391 places, 2384 transitions, 198600 flow [2021-08-13 02:45:27,636 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:45:27,636 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:45:27,636 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] [2021-08-13 02:45:27,636 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-08-13 02:45:27,636 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:45:27,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:45:27,636 INFO L82 PathProgramCache]: Analyzing trace with hash 834640723, now seen corresponding path program 42 times [2021-08-13 02:45:27,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:45:27,636 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200117920] [2021-08-13 02:45:27,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:45:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:45:27,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:45:27,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:45:27,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:45:27,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:45:27,652 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:45:27,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:45:27,659 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 02:45:27,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 02:45:27,668 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 02:45:27,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 02:45:27,689 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-08-13 02:45:27,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 02:45:27,717 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 02:45:27,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 02:45:27,738 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:45:27,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:45:27,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:45:27,760 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:45:27,760 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200117920] [2021-08-13 02:45:27,760 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200117920] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:45:27,760 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:45:27,760 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:45:27,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7816707] [2021-08-13 02:45:27,760 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:45:27,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:45:27,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:45:27,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:45:27,761 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:45:27,761 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 2384 transitions, 198600 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:45:27,761 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:45:27,761 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:45:27,761 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:45:35,837 INFO L129 PetriNetUnfolder]: 735/5717 cut-off events. [2021-08-13 02:45:35,838 INFO L130 PetriNetUnfolder]: For 1221520/1801956 co-relation queries the response was YES. [2021-08-13 02:45:35,848 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109883 conditions, 5717 events. 735/5717 cut-off events. For 1221520/1801956 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 83787 event pairs, 0 based on Foata normal form. 536/6058 useless extension candidates. Maximal degree in co-relation 96518. Up to 1468 conditions per place. [2021-08-13 02:45:35,886 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1756 selfloop transitions, 525 changer transitions 106/2408 dead transitions. [2021-08-13 02:45:35,886 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 2408 transitions, 205390 flow [2021-08-13 02:45:35,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:45:35,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:45:35,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:45:35,887 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:45:35,887 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:45:35,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:45:35,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:45:35,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:45:35,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:45:35,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:45:35,889 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:45:35,889 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 348 predicate places. [2021-08-13 02:45:35,889 INFO L482 AbstractCegarLoop]: Abstraction has has 399 places, 2408 transitions, 205390 flow [2021-08-13 02:45:35,889 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:45:35,889 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:45:35,889 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] [2021-08-13 02:45:35,889 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-08-13 02:45:35,889 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:45:35,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:45:35,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1945203229, now seen corresponding path program 43 times [2021-08-13 02:45:35,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:45:35,890 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928831094] [2021-08-13 02:45:35,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:45:35,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:45:35,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:45:35,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:45:35,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:45:35,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:45:35,906 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:45:35,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:45:35,912 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 02:45:35,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 02:45:35,921 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 02:45:35,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 02:45:35,943 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-08-13 02:45:35,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-08-13 02:45:35,973 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 02:45:35,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 02:45:35,996 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:45:35,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:45:36,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:45:36,018 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:45:36,018 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928831094] [2021-08-13 02:45:36,018 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928831094] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:45:36,019 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:45:36,019 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:45:36,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845318289] [2021-08-13 02:45:36,019 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:45:36,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:45:36,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:45:36,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:45:36,020 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:45:36,021 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 2408 transitions, 205390 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:45:36,021 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:45:36,021 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:45:36,021 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:45:44,314 INFO L129 PetriNetUnfolder]: 735/5676 cut-off events. [2021-08-13 02:45:44,314 INFO L130 PetriNetUnfolder]: For 1143544/1629472 co-relation queries the response was YES. [2021-08-13 02:45:44,324 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112109 conditions, 5676 events. 735/5676 cut-off events. For 1143544/1629472 co-relation queries the response was YES. Maximal size of possible extension queue 828. Compared 83097 event pairs, 0 based on Foata normal form. 477/5954 useless extension candidates. Maximal degree in co-relation 98501. Up to 1467 conditions per place. [2021-08-13 02:45:44,363 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1757 selfloop transitions, 520 changer transitions 109/2407 dead transitions. [2021-08-13 02:45:44,363 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 2407 transitions, 210076 flow [2021-08-13 02:45:44,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:45:44,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:45:44,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:45:44,364 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:45:44,364 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:45:44,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:45:44,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:45:44,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:45:44,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:45:44,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:45:44,365 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:45:44,366 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 356 predicate places. [2021-08-13 02:45:44,366 INFO L482 AbstractCegarLoop]: Abstraction has has 407 places, 2407 transitions, 210076 flow [2021-08-13 02:45:44,366 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:45:44,366 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:45:44,366 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] [2021-08-13 02:45:44,366 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-08-13 02:45:44,366 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:45:44,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:45:44,366 INFO L82 PathProgramCache]: Analyzing trace with hash -600414809, now seen corresponding path program 44 times [2021-08-13 02:45:44,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:45:44,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716807306] [2021-08-13 02:45:44,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:45:44,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:45:44,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:45:44,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:45:44,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:45:44,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:45:44,574 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2021-08-13 02:45:44,575 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:45:44,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:45:44,582 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 02:45:44,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 02:45:44,606 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 02:45:44,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 02:45:44,624 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 02:45:44,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 02:45:44,659 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 02:45:44,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 02:45:44,704 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:45:44,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:45:44,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:45:44,729 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:45:44,729 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716807306] [2021-08-13 02:45:44,729 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716807306] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:45:44,729 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:45:44,729 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:45:44,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221852712] [2021-08-13 02:45:44,730 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:45:44,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:45:44,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:45:44,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:45:44,730 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:45:44,731 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 2407 transitions, 210076 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:45:44,731 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:45:44,731 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:45:44,731 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:45:49,365 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2021-08-13 02:45:52,857 INFO L129 PetriNetUnfolder]: 735/5655 cut-off events. [2021-08-13 02:45:52,857 INFO L130 PetriNetUnfolder]: For 1202576/1700718 co-relation queries the response was YES. [2021-08-13 02:45:52,869 INFO L84 FinitePrefix]: Finished finitePrefix Result has 114391 conditions, 5655 events. 735/5655 cut-off events. For 1202576/1700718 co-relation queries the response was YES. Maximal size of possible extension queue 831. Compared 82725 event pairs, 0 based on Foata normal form. 477/5935 useless extension candidates. Maximal degree in co-relation 100542. Up to 1466 conditions per place. [2021-08-13 02:45:52,910 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1754 selfloop transitions, 519 changer transitions 112/2406 dead transitions. [2021-08-13 02:45:52,910 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 2406 transitions, 214758 flow [2021-08-13 02:45:52,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:45:52,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:45:52,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:45:52,911 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:45:52,911 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:45:52,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:45:52,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:45:52,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:45:52,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:45:52,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:45:52,912 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:45:52,912 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 364 predicate places. [2021-08-13 02:45:52,912 INFO L482 AbstractCegarLoop]: Abstraction has has 415 places, 2406 transitions, 214758 flow [2021-08-13 02:45:52,912 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:45:52,913 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:45:52,913 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] [2021-08-13 02:45:52,913 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-08-13 02:45:52,913 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:45:52,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:45:52,913 INFO L82 PathProgramCache]: Analyzing trace with hash -551937135, now seen corresponding path program 45 times [2021-08-13 02:45:52,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:45:52,913 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426151635] [2021-08-13 02:45:52,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:45:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:45:52,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:45:52,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:45:52,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:45:52,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:45:52,929 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:45:52,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:45:52,935 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 02:45:52,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 02:45:52,945 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 02:45:52,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 02:45:52,966 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-08-13 02:45:52,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 02:45:52,994 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 02:45:52,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 02:45:53,017 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:45:53,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:45:53,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:45:53,039 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:45:53,039 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426151635] [2021-08-13 02:45:53,039 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426151635] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:45:53,039 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:45:53,039 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:45:53,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681741611] [2021-08-13 02:45:53,039 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:45:53,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:45:53,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:45:53,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:45:53,040 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:45:53,040 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 2406 transitions, 214758 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:45:53,040 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:45:53,040 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:45:53,040 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:46:01,476 INFO L129 PetriNetUnfolder]: 735/5662 cut-off events. [2021-08-13 02:46:01,476 INFO L130 PetriNetUnfolder]: For 1682995/2510146 co-relation queries the response was YES. [2021-08-13 02:46:01,490 INFO L84 FinitePrefix]: Finished finitePrefix Result has 116753 conditions, 5662 events. 735/5662 cut-off events. For 1682995/2510146 co-relation queries the response was YES. Maximal size of possible extension queue 831. Compared 82761 event pairs, 0 based on Foata normal form. 675/6141 useless extension candidates. Maximal degree in co-relation 102665. Up to 1465 conditions per place. [2021-08-13 02:46:01,532 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1747 selfloop transitions, 521 changer transitions 116/2405 dead transitions. [2021-08-13 02:46:01,532 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 2405 transitions, 219436 flow [2021-08-13 02:46:01,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:46:01,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:46:01,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:46:01,533 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:46:01,533 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:46:01,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:46:01,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:46:01,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:46:01,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:46:01,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:46:01,535 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:46:01,535 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 372 predicate places. [2021-08-13 02:46:01,535 INFO L482 AbstractCegarLoop]: Abstraction has has 423 places, 2405 transitions, 219436 flow [2021-08-13 02:46:01,535 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:46:01,535 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:46:01,535 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] [2021-08-13 02:46:01,535 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-08-13 02:46:01,535 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:46:01,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:46:01,535 INFO L82 PathProgramCache]: Analyzing trace with hash 72523967, now seen corresponding path program 46 times [2021-08-13 02:46:01,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:46:01,536 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085453784] [2021-08-13 02:46:01,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:46:01,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:46:01,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:46:01,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:46:01,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:46:01,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:46:01,552 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:46:01,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:46:01,558 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 02:46:01,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 02:46:01,568 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 02:46:01,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 02:46:01,581 INFO L142 QuantifierPusher]: treesize reduction 27, result has 61.4 percent of original size [2021-08-13 02:46:01,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-08-13 02:46:01,608 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 02:46:01,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 02:46:01,631 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:46:01,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:46:01,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:46:01,653 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:46:01,653 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085453784] [2021-08-13 02:46:01,653 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085453784] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:46:01,653 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:46:01,653 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:46:01,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293752312] [2021-08-13 02:46:01,653 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:46:01,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:46:01,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:46:01,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:46:01,654 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:46:01,654 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 2405 transitions, 219436 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:46:01,654 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:46:01,654 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:46:01,654 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:46:10,473 INFO L129 PetriNetUnfolder]: 735/5711 cut-off events. [2021-08-13 02:46:10,473 INFO L130 PetriNetUnfolder]: For 1031513/1396476 co-relation queries the response was YES. [2021-08-13 02:46:10,483 INFO L84 FinitePrefix]: Finished finitePrefix Result has 119242 conditions, 5711 events. 735/5711 cut-off events. For 1031513/1396476 co-relation queries the response was YES. Maximal size of possible extension queue 836. Compared 83719 event pairs, 0 based on Foata normal form. 351/5866 useless extension candidates. Maximal degree in co-relation 104917. Up to 1464 conditions per place. [2021-08-13 02:46:10,523 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1745 selfloop transitions, 519 changer transitions 119/2404 dead transitions. [2021-08-13 02:46:10,523 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 2404 transitions, 224110 flow [2021-08-13 02:46:10,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:46:10,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:46:10,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:46:10,524 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:46:10,524 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:46:10,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:46:10,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:46:10,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:46:10,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:46:10,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:46:10,525 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:46:10,525 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 380 predicate places. [2021-08-13 02:46:10,525 INFO L482 AbstractCegarLoop]: Abstraction has has 431 places, 2404 transitions, 224110 flow [2021-08-13 02:46:10,525 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:46:10,525 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:46:10,526 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] [2021-08-13 02:46:10,526 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-08-13 02:46:10,526 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:46:10,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:46:10,526 INFO L82 PathProgramCache]: Analyzing trace with hash -334321501, now seen corresponding path program 47 times [2021-08-13 02:46:10,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:46:10,526 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179591666] [2021-08-13 02:46:10,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:46:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:46:10,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:46:10,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:46:10,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:46:10,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:46:10,541 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:46:10,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:46:10,547 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 02:46:10,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 02:46:10,556 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 02:46:10,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 02:46:10,569 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 02:46:10,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 02:46:10,586 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 02:46:10,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 02:46:10,608 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:46:10,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:46:10,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:46:10,629 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:46:10,629 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179591666] [2021-08-13 02:46:10,629 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179591666] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:46:10,629 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:46:10,629 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:46:10,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518759955] [2021-08-13 02:46:10,629 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:46:10,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:46:10,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:46:10,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:46:10,630 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:46:10,630 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 2404 transitions, 224110 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:46:10,630 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:46:10,630 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:46:10,630 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:46:19,545 INFO L129 PetriNetUnfolder]: 726/5722 cut-off events. [2021-08-13 02:46:19,545 INFO L130 PetriNetUnfolder]: For 1197266/1639752 co-relation queries the response was YES. [2021-08-13 02:46:19,555 INFO L84 FinitePrefix]: Finished finitePrefix Result has 122389 conditions, 5722 events. 726/5722 cut-off events. For 1197266/1639752 co-relation queries the response was YES. Maximal size of possible extension queue 840. Compared 84152 event pairs, 0 based on Foata normal form. 388/5912 useless extension candidates. Maximal degree in co-relation 107319. Up to 1481 conditions per place. [2021-08-13 02:46:19,597 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1756 selfloop transitions, 523 changer transitions 121/2421 dead transitions. [2021-08-13 02:46:19,598 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 2421 transitions, 230508 flow [2021-08-13 02:46:19,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:46:19,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:46:19,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:46:19,598 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:46:19,599 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:46:19,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:46:19,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:46:19,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:46:19,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:46:19,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:46:19,603 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:46:19,603 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 388 predicate places. [2021-08-13 02:46:19,603 INFO L482 AbstractCegarLoop]: Abstraction has has 439 places, 2421 transitions, 230508 flow [2021-08-13 02:46:19,603 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:46:19,603 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:46:19,603 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] [2021-08-13 02:46:19,604 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-08-13 02:46:19,604 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:46:19,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:46:19,604 INFO L82 PathProgramCache]: Analyzing trace with hash 542189355, now seen corresponding path program 48 times [2021-08-13 02:46:19,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:46:19,604 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845439509] [2021-08-13 02:46:19,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:46:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:46:19,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:46:19,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:46:19,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:46:19,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:46:19,640 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:46:19,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:46:19,646 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 02:46:19,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 02:46:19,656 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 02:46:19,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 02:46:19,668 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 02:46:19,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 02:46:19,685 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 02:46:19,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 02:46:19,707 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:46:19,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:46:19,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:46:19,727 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:46:19,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845439509] [2021-08-13 02:46:19,728 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845439509] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:46:19,728 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:46:19,728 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:46:19,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783410254] [2021-08-13 02:46:19,728 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:46:19,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:46:19,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:46:19,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:46:19,729 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:46:19,729 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 2421 transitions, 230508 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:46:19,729 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:46:19,729 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:46:19,729 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:46:28,646 INFO L129 PetriNetUnfolder]: 726/5708 cut-off events. [2021-08-13 02:46:28,646 INFO L130 PetriNetUnfolder]: For 1252596/1705118 co-relation queries the response was YES. [2021-08-13 02:46:28,658 INFO L84 FinitePrefix]: Finished finitePrefix Result has 124702 conditions, 5708 events. 726/5708 cut-off events. For 1252596/1705118 co-relation queries the response was YES. Maximal size of possible extension queue 845. Compared 83880 event pairs, 0 based on Foata normal form. 388/5899 useless extension candidates. Maximal degree in co-relation 109389. Up to 1480 conditions per place. [2021-08-13 02:46:28,701 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1754 selfloop transitions, 520 changer transitions 125/2420 dead transitions. [2021-08-13 02:46:28,701 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 2420 transitions, 235210 flow [2021-08-13 02:46:28,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:46:28,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:46:28,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:46:28,702 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:46:28,702 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:46:28,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:46:28,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:46:28,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:46:28,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:46:28,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:46:28,703 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:46:28,703 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 396 predicate places. [2021-08-13 02:46:28,703 INFO L482 AbstractCegarLoop]: Abstraction has has 447 places, 2420 transitions, 235210 flow [2021-08-13 02:46:28,704 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:46:28,704 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:46:28,704 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] [2021-08-13 02:46:28,704 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-08-13 02:46:28,704 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:46:28,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:46:28,704 INFO L82 PathProgramCache]: Analyzing trace with hash -93895497, now seen corresponding path program 49 times [2021-08-13 02:46:28,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:46:28,704 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364151751] [2021-08-13 02:46:28,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:46:28,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:46:28,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:46:28,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:46:28,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:46:28,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:46:28,719 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:46:28,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:46:28,726 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 02:46:28,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 02:46:28,735 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 02:46:28,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 02:46:28,748 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 02:46:28,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 02:46:28,765 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 02:46:28,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 02:46:28,787 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:46:28,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:46:28,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:46:28,809 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:46:28,809 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364151751] [2021-08-13 02:46:28,809 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364151751] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:46:28,809 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:46:28,809 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:46:28,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434276319] [2021-08-13 02:46:28,810 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:46:28,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:46:28,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:46:28,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:46:28,810 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:46:28,811 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 2420 transitions, 235210 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:46:28,811 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:46:28,811 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:46:28,811 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:46:38,045 INFO L129 PetriNetUnfolder]: 699/6027 cut-off events. [2021-08-13 02:46:38,045 INFO L130 PetriNetUnfolder]: For 1237536/1627867 co-relation queries the response was YES. [2021-08-13 02:46:38,058 INFO L84 FinitePrefix]: Finished finitePrefix Result has 132040 conditions, 6027 events. 699/6027 cut-off events. For 1237536/1627867 co-relation queries the response was YES. Maximal size of possible extension queue 886. Compared 90638 event pairs, 0 based on Foata normal form. 351/6168 useless extension candidates. Maximal degree in co-relation 114472. Up to 1568 conditions per place. [2021-08-13 02:46:38,100 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1819 selfloop transitions, 541 changer transitions 127/2508 dead transitions. [2021-08-13 02:46:38,100 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 2508 transitions, 248808 flow [2021-08-13 02:46:38,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:46:38,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:46:38,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:46:38,101 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:46:38,101 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:46:38,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:46:38,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:46:38,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:46:38,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:46:38,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:46:38,102 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:46:38,102 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 404 predicate places. [2021-08-13 02:46:38,102 INFO L482 AbstractCegarLoop]: Abstraction has has 455 places, 2508 transitions, 248808 flow [2021-08-13 02:46:38,102 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:46:38,102 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:46:38,102 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] [2021-08-13 02:46:38,103 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-08-13 02:46:38,103 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:46:38,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:46:38,103 INFO L82 PathProgramCache]: Analyzing trace with hash -397772123, now seen corresponding path program 50 times [2021-08-13 02:46:38,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:46:38,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756073211] [2021-08-13 02:46:38,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:46:38,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:46:38,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:46:38,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:46:38,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:46:38,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:46:38,117 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:46:38,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:46:38,124 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 02:46:38,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 02:46:38,133 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 02:46:38,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 02:46:38,145 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 02:46:38,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 02:46:38,162 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 02:46:38,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 02:46:38,183 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:46:38,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:46:38,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:46:38,204 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:46:38,204 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756073211] [2021-08-13 02:46:38,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756073211] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:46:38,205 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:46:38,205 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:46:38,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587532758] [2021-08-13 02:46:38,205 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:46:38,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:46:38,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:46:38,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:46:38,206 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:46:38,206 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 2508 transitions, 248808 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:46:38,206 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:46:38,206 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:46:38,206 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:46:47,694 INFO L129 PetriNetUnfolder]: 699/6075 cut-off events. [2021-08-13 02:46:47,694 INFO L130 PetriNetUnfolder]: For 2181428/3107759 co-relation queries the response was YES. [2021-08-13 02:46:47,706 INFO L84 FinitePrefix]: Finished finitePrefix Result has 134623 conditions, 6075 events. 699/6075 cut-off events. For 2181428/3107759 co-relation queries the response was YES. Maximal size of possible extension queue 892. Compared 91472 event pairs, 0 based on Foata normal form. 675/6539 useless extension candidates. Maximal degree in co-relation 116778. Up to 1567 conditions per place. [2021-08-13 02:46:47,748 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1817 selfloop transitions, 539 changer transitions 130/2507 dead transitions. [2021-08-13 02:46:47,748 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 2507 transitions, 253680 flow [2021-08-13 02:46:47,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:46:47,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:46:47,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:46:47,749 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:46:47,749 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:46:47,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:46:47,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:46:47,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:46:47,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:46:47,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:46:47,750 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:46:47,750 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 412 predicate places. [2021-08-13 02:46:47,750 INFO L482 AbstractCegarLoop]: Abstraction has has 463 places, 2507 transitions, 253680 flow [2021-08-13 02:46:47,751 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:46:47,751 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:46:47,751 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] [2021-08-13 02:46:47,751 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-08-13 02:46:47,751 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:46:47,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:46:47,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1713189061, now seen corresponding path program 51 times [2021-08-13 02:46:47,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:46:47,751 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654308882] [2021-08-13 02:46:47,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:46:47,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:46:47,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:46:47,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:46:47,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:46:47,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:46:47,766 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:46:47,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:46:47,772 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 02:46:47,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 02:46:47,781 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 02:46:47,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 02:46:47,794 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 02:46:47,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 02:46:47,812 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 02:46:47,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 02:46:47,835 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:46:47,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:46:47,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:46:47,857 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:46:47,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654308882] [2021-08-13 02:46:47,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654308882] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:46:47,858 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:46:47,858 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:46:47,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366997682] [2021-08-13 02:46:47,858 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:46:47,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:46:47,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:46:47,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:46:47,858 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:46:47,859 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 2507 transitions, 253680 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:46:47,859 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:46:47,859 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:46:47,859 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:46:57,895 INFO L129 PetriNetUnfolder]: 699/6032 cut-off events. [2021-08-13 02:46:57,895 INFO L130 PetriNetUnfolder]: For 1719265/2302905 co-relation queries the response was YES. [2021-08-13 02:46:57,906 INFO L84 FinitePrefix]: Finished finitePrefix Result has 136934 conditions, 6032 events. 699/6032 cut-off events. For 1719265/2302905 co-relation queries the response was YES. Maximal size of possible extension queue 883. Compared 90682 event pairs, 0 based on Foata normal form. 477/6294 useless extension candidates. Maximal degree in co-relation 118814. Up to 1566 conditions per place. [2021-08-13 02:46:57,949 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1817 selfloop transitions, 536 changer transitions 132/2506 dead transitions. [2021-08-13 02:46:57,950 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 2506 transitions, 258548 flow [2021-08-13 02:46:57,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:46:57,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:46:57,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:46:57,951 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:46:57,951 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:46:57,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:46:57,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:46:57,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:46:57,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:46:57,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:46:57,952 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:46:57,952 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 420 predicate places. [2021-08-13 02:46:57,952 INFO L482 AbstractCegarLoop]: Abstraction has has 471 places, 2506 transitions, 258548 flow [2021-08-13 02:46:57,952 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:46:57,952 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:46:57,952 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] [2021-08-13 02:46:57,952 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-08-13 02:46:57,952 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:46:57,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:46:57,953 INFO L82 PathProgramCache]: Analyzing trace with hash 970325337, now seen corresponding path program 52 times [2021-08-13 02:46:57,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:46:57,953 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744533504] [2021-08-13 02:46:57,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:46:57,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:46:57,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:46:57,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:46:57,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:46:57,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:46:57,968 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:46:57,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:46:57,974 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 02:46:57,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 02:46:57,984 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 02:46:57,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 02:46:57,997 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 02:46:57,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 02:46:58,014 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 02:46:58,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 02:46:58,037 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:46:58,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:46:58,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:46:58,059 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:46:58,059 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744533504] [2021-08-13 02:46:58,060 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744533504] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:46:58,060 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:46:58,060 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:46:58,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914028256] [2021-08-13 02:46:58,060 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:46:58,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:46:58,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:46:58,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:46:58,061 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:46:58,061 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 2506 transitions, 258548 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:46:58,061 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:46:58,061 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:46:58,061 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:47:08,251 INFO L129 PetriNetUnfolder]: 699/6012 cut-off events. [2021-08-13 02:47:08,252 INFO L130 PetriNetUnfolder]: For 1792518/2388372 co-relation queries the response was YES. [2021-08-13 02:47:08,262 INFO L84 FinitePrefix]: Finished finitePrefix Result has 139310 conditions, 6012 events. 699/6012 cut-off events. For 1792518/2388372 co-relation queries the response was YES. Maximal size of possible extension queue 888. Compared 90279 event pairs, 0 based on Foata normal form. 477/6277 useless extension candidates. Maximal degree in co-relation 120917. Up to 1565 conditions per place. [2021-08-13 02:47:08,307 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1814 selfloop transitions, 535 changer transitions 135/2505 dead transitions. [2021-08-13 02:47:08,307 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 2505 transitions, 263412 flow [2021-08-13 02:47:08,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:47:08,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:47:08,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:47:08,308 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:47:08,308 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:47:08,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:47:08,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:47:08,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:47:08,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:47:08,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:47:08,309 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:47:08,310 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 428 predicate places. [2021-08-13 02:47:08,310 INFO L482 AbstractCegarLoop]: Abstraction has has 479 places, 2505 transitions, 263412 flow [2021-08-13 02:47:08,310 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:47:08,310 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:47:08,310 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] [2021-08-13 02:47:08,310 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-08-13 02:47:08,310 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:47:08,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:47:08,310 INFO L82 PathProgramCache]: Analyzing trace with hash -820795121, now seen corresponding path program 53 times [2021-08-13 02:47:08,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:47:08,310 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318590559] [2021-08-13 02:47:08,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:47:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:47:08,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:47:08,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:47:08,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:47:08,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:47:08,325 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:47:08,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:47:08,331 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 02:47:08,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 02:47:08,341 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 02:47:08,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 02:47:08,353 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-08-13 02:47:08,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 02:47:08,381 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 02:47:08,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 02:47:08,403 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:47:08,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:47:08,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:47:08,424 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:47:08,424 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318590559] [2021-08-13 02:47:08,424 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318590559] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:47:08,425 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:47:08,425 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:47:08,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833997915] [2021-08-13 02:47:08,425 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:47:08,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:47:08,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:47:08,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:47:08,425 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:47:08,426 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 2505 transitions, 263412 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:47:08,426 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:47:08,426 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:47:08,426 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:47:18,967 INFO L129 PetriNetUnfolder]: 699/6023 cut-off events. [2021-08-13 02:47:18,967 INFO L130 PetriNetUnfolder]: For 2096605/2842195 co-relation queries the response was YES. [2021-08-13 02:47:18,979 INFO L84 FinitePrefix]: Finished finitePrefix Result has 141775 conditions, 6023 events. 699/6023 cut-off events. For 2096605/2842195 co-relation queries the response was YES. Maximal size of possible extension queue 884. Compared 90582 event pairs, 0 based on Foata normal form. 536/6346 useless extension candidates. Maximal degree in co-relation 123111. Up to 1564 conditions per place. [2021-08-13 02:47:19,024 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1810 selfloop transitions, 536 changer transitions 137/2504 dead transitions. [2021-08-13 02:47:19,024 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 2504 transitions, 268272 flow [2021-08-13 02:47:19,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:47:19,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:47:19,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:47:19,025 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:47:19,025 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:47:19,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:47:19,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:47:19,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:47:19,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:47:19,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:47:19,026 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:47:19,026 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 436 predicate places. [2021-08-13 02:47:19,026 INFO L482 AbstractCegarLoop]: Abstraction has has 487 places, 2504 transitions, 268272 flow [2021-08-13 02:47:19,027 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:47:19,027 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:47:19,027 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] [2021-08-13 02:47:19,027 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-08-13 02:47:19,027 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:47:19,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:47:19,027 INFO L82 PathProgramCache]: Analyzing trace with hash -757719403, now seen corresponding path program 54 times [2021-08-13 02:47:19,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:47:19,027 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3632271] [2021-08-13 02:47:19,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:47:19,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:47:19,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:47:19,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:47:19,038 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:47:19,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:47:19,042 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:47:19,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:47:19,049 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 02:47:19,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 02:47:19,058 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 02:47:19,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 02:47:19,071 INFO L142 QuantifierPusher]: treesize reduction 18, result has 69.5 percent of original size [2021-08-13 02:47:19,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-08-13 02:47:19,099 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 02:47:19,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 02:47:19,122 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:47:19,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:47:19,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:47:19,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:47:19,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3632271] [2021-08-13 02:47:19,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3632271] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:47:19,145 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:47:19,145 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:47:19,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574720170] [2021-08-13 02:47:19,145 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:47:19,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:47:19,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:47:19,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:47:19,146 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:47:19,146 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 2504 transitions, 268272 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:47:19,146 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:47:19,146 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:47:19,146 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:47:29,877 INFO L129 PetriNetUnfolder]: 699/6068 cut-off events. [2021-08-13 02:47:29,877 INFO L130 PetriNetUnfolder]: For 1520523/1953134 co-relation queries the response was YES. [2021-08-13 02:47:29,888 INFO L84 FinitePrefix]: Finished finitePrefix Result has 144343 conditions, 6068 events. 699/6068 cut-off events. For 1520523/1953134 co-relation queries the response was YES. Maximal size of possible extension queue 892. Compared 91429 event pairs, 0 based on Foata normal form. 351/6207 useless extension candidates. Maximal degree in co-relation 125410. Up to 1563 conditions per place. [2021-08-13 02:47:29,930 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 1808 selfloop transitions, 532 changer transitions 142/2503 dead transitions. [2021-08-13 02:47:29,931 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 2503 transitions, 273128 flow [2021-08-13 02:47:29,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:47:29,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:47:29,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:47:29,931 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:47:29,932 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:47:29,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:47:29,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:47:29,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:47:29,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:47:29,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:47:29,933 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:47:29,933 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 444 predicate places. [2021-08-13 02:47:29,933 INFO L482 AbstractCegarLoop]: Abstraction has has 495 places, 2503 transitions, 273128 flow [2021-08-13 02:47:29,933 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:47:29,933 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:47:29,933 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] [2021-08-13 02:47:29,933 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-08-13 02:47:29,933 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:47:29,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:47:29,933 INFO L82 PathProgramCache]: Analyzing trace with hash -18628665, now seen corresponding path program 55 times [2021-08-13 02:47:29,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:47:29,934 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928243887] [2021-08-13 02:47:29,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:47:29,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:47:29,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:47:29,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:47:29,943 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:47:29,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:47:29,947 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:47:29,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:47:29,953 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 02:47:29,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 02:47:29,962 INFO L142 QuantifierPusher]: treesize reduction 18, result has 61.7 percent of original size [2021-08-13 02:47:29,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-08-13 02:47:29,975 INFO L142 QuantifierPusher]: treesize reduction 18, result has 66.0 percent of original size [2021-08-13 02:47:29,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-08-13 02:47:29,992 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 02:47:29,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 02:47:30,013 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:47:30,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:47:30,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:47:30,035 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:47:30,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928243887] [2021-08-13 02:47:30,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928243887] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:47:30,036 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:47:30,036 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:47:30,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092051045] [2021-08-13 02:47:30,036 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:47:30,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:47:30,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:47:30,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:47:30,037 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:47:30,037 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 2503 transitions, 273128 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:47:30,037 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:47:30,037 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:47:30,037 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 02:47:42,590 INFO L129 PetriNetUnfolder]: 678/6846 cut-off events. [2021-08-13 02:47:42,591 INFO L130 PetriNetUnfolder]: For 2387306/3162924 co-relation queries the response was YES. [2021-08-13 02:47:42,602 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162429 conditions, 6846 events. 678/6846 cut-off events. For 2387306/3162924 co-relation queries the response was YES. Maximal size of possible extension queue 1022. Compared 107240 event pairs, 0 based on Foata normal form. 449/7036 useless extension candidates. Maximal degree in co-relation 138627. Up to 1821 conditions per place. [2021-08-13 02:47:42,649 INFO L132 encePairwiseOnDemand]: 72/80 looper letters, 2048 selfloop transitions, 548 changer transitions 144/2761 dead transitions. [2021-08-13 02:47:42,649 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 2761 transitions, 306988 flow [2021-08-13 02:47:42,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 02:47:42,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 02:47:42,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 674 transitions. [2021-08-13 02:47:42,650 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9361111111111111 [2021-08-13 02:47:42,650 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 674 transitions. [2021-08-13 02:47:42,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 674 transitions. [2021-08-13 02:47:42,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 02:47:42,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 674 transitions. [2021-08-13 02:47:42,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.88888888888889) internal successors, (674), 9 states have internal predecessors, (674), 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) [2021-08-13 02:47:42,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:47:42,651 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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) [2021-08-13 02:47:42,651 INFO L348 CegarLoopForPetriNet]: 51 programPoint places, 452 predicate places. [2021-08-13 02:47:42,651 INFO L482 AbstractCegarLoop]: Abstraction has has 503 places, 2761 transitions, 306988 flow [2021-08-13 02:47:42,652 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:47:42,652 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 02:47:42,652 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] [2021-08-13 02:47:42,652 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-08-13 02:47:42,652 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-08-13 02:47:42,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 02:47:42,652 INFO L82 PathProgramCache]: Analyzing trace with hash -2140285087, now seen corresponding path program 56 times [2021-08-13 02:47:42,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 02:47:42,652 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813790472] [2021-08-13 02:47:42,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 02:47:42,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 02:47:42,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:47:42,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 02:47:42,663 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 02:47:42,663 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 02:47:42,666 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 02:47:42,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 02:47:42,673 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 02:47:42,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 02:47:42,682 INFO L142 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size [2021-08-13 02:47:42,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-08-13 02:47:42,695 INFO L142 QuantifierPusher]: treesize reduction 27, result has 57.8 percent of original size [2021-08-13 02:47:42,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-08-13 02:47:42,712 INFO L142 QuantifierPusher]: treesize reduction 36, result has 55.6 percent of original size [2021-08-13 02:47:42,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-08-13 02:47:42,734 INFO L142 QuantifierPusher]: treesize reduction 54, result has 47.6 percent of original size [2021-08-13 02:47:42,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-08-13 02:47:42,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 02:47:42,755 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 02:47:42,755 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813790472] [2021-08-13 02:47:42,755 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813790472] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 02:47:42,755 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 02:47:42,755 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 02:47:42,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018957258] [2021-08-13 02:47:42,756 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-13 02:47:42,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 02:47:42,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-13 02:47:42,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-13 02:47:42,756 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 80 [2021-08-13 02:47:42,756 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 2761 transitions, 306988 flow. Second operand has 9 states, 9 states have (on average 71.88888888888889) internal successors, (647), 9 states have internal predecessors, (647), 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) [2021-08-13 02:47:42,756 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 02:47:42,757 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 80 [2021-08-13 02:47:42,757 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand