/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-CovSimpl-Hitting.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 17:57:04,727 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 17:57:04,729 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 17:57:04,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-13 17:57:04,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-13 17:57:04,756 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-13 17:57:04,757 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-13 17:57:04,759 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-13 17:57:04,760 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-13 17:57:04,761 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-13 17:57:04,762 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-13 17:57:04,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-13 17:57:04,763 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 17:57:04,764 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 17:57:04,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 17:57:04,766 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 17:57:04,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 17:57:04,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 17:57:04,768 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 17:57:04,770 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 17:57:04,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 17:57:04,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 17:57:04,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 17:57:04,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 17:57:04,776 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-13 17:57:04,776 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-13 17:57:04,777 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-13 17:57:04,777 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-13 17:57:04,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-13 17:57:04,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-13 17:57:04,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-13 17:57:04,780 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-13 17:57:04,780 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-13 17:57:04,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-13 17:57:04,782 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-13 17:57:04,782 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-13 17:57:04,783 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-13 17:57:04,783 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-13 17:57:04,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 17:57:04,784 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 17:57:04,784 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 17:57:04,785 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-CovSimpl-Hitting.epf [2021-08-13 17:57:04,805 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 17:57:04,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 17:57:04,807 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 17:57:04,807 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 17:57:04,807 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 17:57:04,807 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 17:57:04,807 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 17:57:04,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 17:57:04,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 17:57:04,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 17:57:04,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 17:57:04,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 17:57:04,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 17:57:04,808 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 17:57:04,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 17:57:04,808 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 17:57:04,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 17:57:04,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 17:57:04,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 17:57:04,809 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 17:57:04,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 17:57:04,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 17:57:04,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 17:57:04,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 17:57:04,810 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 17:57:04,810 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 17:57:04,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 17:57:04,810 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 17:57:04,810 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 17:57:04,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 17:57:04,810 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 17:57:04,811 INFO L138 SettingsManager]: * Use hitting sets in computation of OwickiGries annotation=true [2021-08-13 17:57:04,811 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-13 17:57:04,811 INFO L138 SettingsManager]: * Simplify away covered predicates in OwickiGries annotation=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 17:57:05,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 17:57:05,177 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 17:57:05,180 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 17:57:05,182 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-13 17:57:05,183 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-13 17:57:05,184 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_4.bpl [2021-08-13 17:57:05,184 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_4.bpl' [2021-08-13 17:57:05,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 17:57:05,208 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-13 17:57:05,209 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 17:57:05,209 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 17:57:05,210 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 17:57:05,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:05" (1/1) ... [2021-08-13 17:57:05,227 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:05" (1/1) ... [2021-08-13 17:57:05,233 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 17:57:05,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 17:57:05,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 17:57:05,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 17:57:05,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:05" (1/1) ... [2021-08-13 17:57:05,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:05" (1/1) ... [2021-08-13 17:57:05,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:05" (1/1) ... [2021-08-13 17:57:05,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:05" (1/1) ... [2021-08-13 17:57:05,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:05" (1/1) ... [2021-08-13 17:57:05,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:05" (1/1) ... [2021-08-13 17:57:05,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:05" (1/1) ... [2021-08-13 17:57:05,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 17:57:05,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 17:57:05,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 17:57:05,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 17:57:05,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:05" (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 17:57:05,326 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2021-08-13 17:57:05,326 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2021-08-13 17:57:05,326 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2021-08-13 17:57:05,326 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2021-08-13 17:57:05,326 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2021-08-13 17:57:05,327 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2021-08-13 17:57:05,327 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2021-08-13 17:57:05,327 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2021-08-13 17:57:05,327 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2021-08-13 17:57:05,327 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2021-08-13 17:57:05,327 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2021-08-13 17:57:05,327 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2021-08-13 17:57:05,328 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-13 17:57:05,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 17:57:05,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 17:57:05,329 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 17:57:05,468 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 17:57:05,468 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-13 17:57:05,469 INFO L202 PluginConnector]: Adding new model example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 05:57:05 BoogieIcfgContainer [2021-08-13 17:57:05,470 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 17:57:05,471 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 17:57:05,471 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 17:57:05,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 17:57:05,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 05:57:05" (1/2) ... [2021-08-13 17:57:05,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516ec9bb and model type example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 05:57:05, skipping insertion in model container [2021-08-13 17:57:05,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 05:57:05" (2/2) ... [2021-08-13 17:57:05,476 INFO L111 eAbstractionObserver]: Analyzing ICFG example_4.bpl [2021-08-13 17:57:05,481 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 17:57:05,481 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 17:57:05,482 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 17:57:05,539 INFO L149 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2021-08-13 17:57:05,571 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-08-13 17:57:05,613 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 17:57:05,613 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 17:57:05,613 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 17:57:05,613 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 17:57:05,613 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 17:57:05,613 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 17:57:05,613 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 17:57:05,614 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 17:57:05,622 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 35 transitions, 138 flow [2021-08-13 17:57:05,664 INFO L129 PetriNetUnfolder]: 17/47 cut-off events. [2021-08-13 17:57:05,664 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-08-13 17:57:05,667 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 47 events. 17/47 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 122 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 41. Up to 12 conditions per place. [2021-08-13 17:57:05,667 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 35 transitions, 138 flow [2021-08-13 17:57:05,671 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 29 transitions, 118 flow [2021-08-13 17:57:05,688 INFO L129 PetriNetUnfolder]: 17/44 cut-off events. [2021-08-13 17:57:05,688 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-08-13 17:57:05,688 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:05,689 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:05,689 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:57:05,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:05,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1165854259, now seen corresponding path program 1 times [2021-08-13 17:57:05,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:05,704 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456436395] [2021-08-13 17:57:05,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:05,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:05,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:05,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:05,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:57:05,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:05,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:05,854 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 17:57:05,855 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:05,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456436395] [2021-08-13 17:57:05,856 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456436395] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:05,856 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:05,857 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 17:57:05,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465921946] [2021-08-13 17:57:05,864 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 17:57:05,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:05,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 17:57:05,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 17:57:05,883 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 35 [2021-08-13 17:57:05,886 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 29 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:05,886 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:05,886 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 35 [2021-08-13 17:57:05,887 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:05,941 INFO L129 PetriNetUnfolder]: 14/41 cut-off events. [2021-08-13 17:57:05,941 INFO L130 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2021-08-13 17:57:05,942 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 41 events. 14/41 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 82 event pairs, 0 based on Foata normal form. 1/42 useless extension candidates. Maximal degree in co-relation 39. Up to 12 conditions per place. [2021-08-13 17:57:05,943 INFO L132 encePairwiseOnDemand]: 33/35 looper letters, 3 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2021-08-13 17:57:05,943 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 28 transitions, 121 flow [2021-08-13 17:57:05,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 17:57:05,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 17:57:05,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2021-08-13 17:57:05,959 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9047619047619048 [2021-08-13 17:57:05,960 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 95 transitions. [2021-08-13 17:57:05,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 95 transitions. [2021-08-13 17:57:05,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:05,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 95 transitions. [2021-08-13 17:57:05,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:05,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:05,971 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:05,972 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2021-08-13 17:57:05,972 INFO L482 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 121 flow [2021-08-13 17:57:05,972 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:05,972 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:05,973 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:05,973 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 17:57:05,973 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:57:05,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:05,974 INFO L82 PathProgramCache]: Analyzing trace with hash 899557645, now seen corresponding path program 1 times [2021-08-13 17:57:05,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:05,975 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569678319] [2021-08-13 17:57:05,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:06,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:06,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:06,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:06,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:57:06,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:06,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:06,032 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 17:57:06,033 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:06,033 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569678319] [2021-08-13 17:57:06,033 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569678319] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:06,033 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:06,033 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 17:57:06,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525881029] [2021-08-13 17:57:06,035 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 17:57:06,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:06,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 17:57:06,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 17:57:06,036 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 35 [2021-08-13 17:57:06,036 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:06,036 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:06,036 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 35 [2021-08-13 17:57:06,037 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:06,049 INFO L129 PetriNetUnfolder]: 6/29 cut-off events. [2021-08-13 17:57:06,050 INFO L130 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2021-08-13 17:57:06,050 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 29 events. 6/29 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 48 event pairs, 0 based on Foata normal form. 3/32 useless extension candidates. Maximal degree in co-relation 32. Up to 6 conditions per place. [2021-08-13 17:57:06,051 INFO L132 encePairwiseOnDemand]: 32/35 looper letters, 2 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2021-08-13 17:57:06,051 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 26 transitions, 117 flow [2021-08-13 17:57:06,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 17:57:06,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 17:57:06,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2021-08-13 17:57:06,052 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9047619047619048 [2021-08-13 17:57:06,053 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 95 transitions. [2021-08-13 17:57:06,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 95 transitions. [2021-08-13 17:57:06,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:06,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 95 transitions. [2021-08-13 17:57:06,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:06,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:06,055 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:06,056 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2021-08-13 17:57:06,056 INFO L482 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 117 flow [2021-08-13 17:57:06,056 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:06,056 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:06,056 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:06,056 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 17:57:06,056 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:57:06,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:06,057 INFO L82 PathProgramCache]: Analyzing trace with hash 489098449, now seen corresponding path program 1 times [2021-08-13 17:57:06,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:06,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606206123] [2021-08-13 17:57:06,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:06,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:06,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:06,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:06,071 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:06,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 17:57:06,074 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:06,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:06,075 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 17:57:06,076 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:06,076 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606206123] [2021-08-13 17:57:06,076 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606206123] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:06,076 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:06,076 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 17:57:06,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168603170] [2021-08-13 17:57:06,077 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 17:57:06,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:06,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 17:57:06,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 17:57:06,078 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 35 [2021-08-13 17:57:06,078 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:06,079 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:06,079 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 35 [2021-08-13 17:57:06,079 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:06,102 INFO L129 PetriNetUnfolder]: 0/17 cut-off events. [2021-08-13 17:57:06,103 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2021-08-13 17:57:06,103 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 17 events. 0/17 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 25 event pairs, 0 based on Foata normal form. 3/20 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-08-13 17:57:06,103 INFO L132 encePairwiseOnDemand]: 31/35 looper letters, 1 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2021-08-13 17:57:06,103 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 17 transitions, 70 flow [2021-08-13 17:57:06,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 17:57:06,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 17:57:06,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2021-08-13 17:57:06,108 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9047619047619048 [2021-08-13 17:57:06,108 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 95 transitions. [2021-08-13 17:57:06,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 95 transitions. [2021-08-13 17:57:06,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:06,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 95 transitions. [2021-08-13 17:57:06,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:06,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:06,110 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:06,110 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2021-08-13 17:57:06,110 INFO L482 AbstractCegarLoop]: Abstraction has has 36 places, 17 transitions, 70 flow [2021-08-13 17:57:06,110 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:06,110 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:06,111 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:06,111 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 17:57:06,111 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:57:06,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:06,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1342182221, now seen corresponding path program 1 times [2021-08-13 17:57:06,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:06,112 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135039829] [2021-08-13 17:57:06,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:06,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:06,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:06,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:06,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:06,216 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:06,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:06,242 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:06,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:06,273 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 17:57:06,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 17:57:06,304 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 17:57:06,304 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:06,304 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135039829] [2021-08-13 17:57:06,305 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135039829] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:06,305 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:06,305 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 17:57:06,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106745641] [2021-08-13 17:57:06,305 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 17:57:06,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:06,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 17:57:06,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 17:57:06,310 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 17:57:06,310 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 17 transitions, 70 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:06,310 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:06,311 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 17:57:06,311 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:06,397 INFO L129 PetriNetUnfolder]: 15/91 cut-off events. [2021-08-13 17:57:06,397 INFO L130 PetriNetUnfolder]: For 64/64 co-relation queries the response was YES. [2021-08-13 17:57:06,398 INFO L84 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 91 events. 15/91 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 462 event pairs, 5 based on Foata normal form. 1/89 useless extension candidates. Maximal degree in co-relation 152. Up to 17 conditions per place. [2021-08-13 17:57:06,400 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 9 selfloop transitions, 3 changer transitions 1/25 dead transitions. [2021-08-13 17:57:06,401 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 25 transitions, 112 flow [2021-08-13 17:57:06,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 17:57:06,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 17:57:06,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-08-13 17:57:06,404 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8952380952380953 [2021-08-13 17:57:06,404 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-08-13 17:57:06,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-08-13 17:57:06,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:06,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-08-13 17:57:06,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:06,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:06,410 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:06,411 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 11 predicate places. [2021-08-13 17:57:06,411 INFO L482 AbstractCegarLoop]: Abstraction has has 41 places, 25 transitions, 112 flow [2021-08-13 17:57:06,411 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:06,411 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:06,411 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:06,412 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 17:57:06,412 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:57:06,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:06,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1788203519, now seen corresponding path program 2 times [2021-08-13 17:57:06,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:06,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921499088] [2021-08-13 17:57:06,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:06,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:06,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:06,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:06,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:06,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:06,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:06,530 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:06,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:06,549 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 17:57:06,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 17:57:06,566 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 17:57:06,567 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:06,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921499088] [2021-08-13 17:57:06,568 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921499088] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:06,572 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:06,573 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 17:57:06,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057557546] [2021-08-13 17:57:06,573 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 17:57:06,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:06,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 17:57:06,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 17:57:06,576 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 17:57:06,576 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 25 transitions, 112 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:06,576 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:06,576 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 17:57:06,577 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:06,661 INFO L129 PetriNetUnfolder]: 11/121 cut-off events. [2021-08-13 17:57:06,662 INFO L130 PetriNetUnfolder]: For 109/125 co-relation queries the response was YES. [2021-08-13 17:57:06,662 INFO L84 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 121 events. 11/121 cut-off events. For 109/125 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 712 event pairs, 1 based on Foata normal form. 1/117 useless extension candidates. Maximal degree in co-relation 231. Up to 23 conditions per place. [2021-08-13 17:57:06,663 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 17 selfloop transitions, 7 changer transitions 4/40 dead transitions. [2021-08-13 17:57:06,663 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 228 flow [2021-08-13 17:57:06,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 17:57:06,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 17:57:06,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-08-13 17:57:06,665 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8952380952380953 [2021-08-13 17:57:06,665 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-08-13 17:57:06,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-08-13 17:57:06,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:06,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-08-13 17:57:06,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:06,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:06,668 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:06,668 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2021-08-13 17:57:06,668 INFO L482 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 228 flow [2021-08-13 17:57:06,668 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:06,668 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:06,668 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:06,669 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 17:57:06,669 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:57:06,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:06,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1775956589, now seen corresponding path program 3 times [2021-08-13 17:57:06,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:06,670 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024406222] [2021-08-13 17:57:06,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:06,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:06,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:06,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:06,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:06,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:06,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:06,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:06,758 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:06,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:06,791 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 17:57:06,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 17:57:06,807 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 17:57:06,807 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:06,807 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024406222] [2021-08-13 17:57:06,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024406222] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:06,807 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:06,808 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 17:57:06,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898278812] [2021-08-13 17:57:06,808 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 17:57:06,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:06,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 17:57:06,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 17:57:06,809 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 17:57:06,810 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 228 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:06,810 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:06,810 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 17:57:06,810 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:06,859 INFO L129 PetriNetUnfolder]: 10/136 cut-off events. [2021-08-13 17:57:06,859 INFO L130 PetriNetUnfolder]: For 165/209 co-relation queries the response was YES. [2021-08-13 17:57:06,860 INFO L84 FinitePrefix]: Finished finitePrefix Result has 395 conditions, 136 events. 10/136 cut-off events. For 165/209 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 858 event pairs, 0 based on Foata normal form. 1/132 useless extension candidates. Maximal degree in co-relation 304. Up to 27 conditions per place. [2021-08-13 17:57:06,861 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 24 selfloop transitions, 13 changer transitions 6/55 dead transitions. [2021-08-13 17:57:06,861 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 55 transitions, 404 flow [2021-08-13 17:57:06,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 17:57:06,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 17:57:06,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-08-13 17:57:06,862 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8952380952380953 [2021-08-13 17:57:06,862 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-08-13 17:57:06,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-08-13 17:57:06,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:06,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-08-13 17:57:06,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:06,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:06,864 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:06,864 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2021-08-13 17:57:06,864 INFO L482 AbstractCegarLoop]: Abstraction has has 51 places, 55 transitions, 404 flow [2021-08-13 17:57:06,864 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:06,864 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:06,865 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:06,865 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 17:57:06,865 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:57:06,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:06,865 INFO L82 PathProgramCache]: Analyzing trace with hash -359152829, now seen corresponding path program 4 times [2021-08-13 17:57:06,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:06,866 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894130755] [2021-08-13 17:57:06,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:06,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:06,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:06,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:06,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:06,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:06,892 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:06,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:06,903 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:06,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:06,918 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 17:57:06,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 17:57:06,933 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 17:57:06,933 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:06,933 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894130755] [2021-08-13 17:57:06,933 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894130755] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:06,933 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:06,933 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 17:57:06,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034194704] [2021-08-13 17:57:06,934 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 17:57:06,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:06,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 17:57:06,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 17:57:06,935 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 17:57:06,935 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 55 transitions, 404 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:06,936 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:06,936 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 17:57:06,936 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:07,002 INFO L129 PetriNetUnfolder]: 8/148 cut-off events. [2021-08-13 17:57:07,002 INFO L130 PetriNetUnfolder]: For 257/363 co-relation queries the response was YES. [2021-08-13 17:57:07,005 INFO L84 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 148 events. 8/148 cut-off events. For 257/363 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 988 event pairs, 0 based on Foata normal form. 8/154 useless extension candidates. Maximal degree in co-relation 374. Up to 29 conditions per place. [2021-08-13 17:57:07,007 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 32 selfloop transitions, 17 changer transitions 8/69 dead transitions. [2021-08-13 17:57:07,007 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 69 transitions, 630 flow [2021-08-13 17:57:07,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 17:57:07,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 17:57:07,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-08-13 17:57:07,009 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8952380952380953 [2021-08-13 17:57:07,009 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-08-13 17:57:07,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-08-13 17:57:07,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:07,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-08-13 17:57:07,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:07,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:07,011 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:07,011 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 26 predicate places. [2021-08-13 17:57:07,011 INFO L482 AbstractCegarLoop]: Abstraction has has 56 places, 69 transitions, 630 flow [2021-08-13 17:57:07,011 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:07,011 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:07,011 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:07,011 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 17:57:07,012 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:57:07,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:07,012 INFO L82 PathProgramCache]: Analyzing trace with hash 734938759, now seen corresponding path program 5 times [2021-08-13 17:57:07,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:07,012 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940127760] [2021-08-13 17:57:07,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:07,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:07,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:07,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:07,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:07,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:07,057 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:07,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:07,069 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:07,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:07,088 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 17:57:07,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 17:57:07,102 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 17:57:07,102 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:07,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940127760] [2021-08-13 17:57:07,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940127760] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:07,103 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:07,103 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 17:57:07,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140524377] [2021-08-13 17:57:07,103 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 17:57:07,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:07,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 17:57:07,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 17:57:07,107 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 17:57:07,107 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 69 transitions, 630 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:07,107 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:07,107 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 17:57:07,107 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:07,173 INFO L129 PetriNetUnfolder]: 6/157 cut-off events. [2021-08-13 17:57:07,173 INFO L130 PetriNetUnfolder]: For 376/535 co-relation queries the response was YES. [2021-08-13 17:57:07,174 INFO L84 FinitePrefix]: Finished finitePrefix Result has 570 conditions, 157 events. 6/157 cut-off events. For 376/535 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1085 event pairs, 0 based on Foata normal form. 24/179 useless extension candidates. Maximal degree in co-relation 437. Up to 31 conditions per place. [2021-08-13 17:57:07,174 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 33 selfloop transitions, 15 changer transitions 11/71 dead transitions. [2021-08-13 17:57:07,174 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 71 transitions, 768 flow [2021-08-13 17:57:07,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 17:57:07,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 17:57:07,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-08-13 17:57:07,176 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8952380952380953 [2021-08-13 17:57:07,176 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-08-13 17:57:07,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-08-13 17:57:07,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:07,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-08-13 17:57:07,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:07,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:07,178 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:07,178 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2021-08-13 17:57:07,178 INFO L482 AbstractCegarLoop]: Abstraction has has 61 places, 71 transitions, 768 flow [2021-08-13 17:57:07,178 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:07,178 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:07,179 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:07,179 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-13 17:57:07,179 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:57:07,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:07,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1216687559, now seen corresponding path program 6 times [2021-08-13 17:57:07,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:07,180 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774373586] [2021-08-13 17:57:07,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:07,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:07,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:07,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:07,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:07,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:07,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:07,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:07,228 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:07,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:07,246 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 17:57:07,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 17:57:07,260 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 17:57:07,260 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:07,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774373586] [2021-08-13 17:57:07,261 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774373586] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:07,261 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:07,261 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 17:57:07,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198421647] [2021-08-13 17:57:07,261 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 17:57:07,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:07,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 17:57:07,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 17:57:07,262 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 17:57:07,263 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 71 transitions, 768 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:07,263 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:07,263 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 17:57:07,263 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:07,334 INFO L129 PetriNetUnfolder]: 5/163 cut-off events. [2021-08-13 17:57:07,334 INFO L130 PetriNetUnfolder]: For 454/528 co-relation queries the response was YES. [2021-08-13 17:57:07,334 INFO L84 FinitePrefix]: Finished finitePrefix Result has 648 conditions, 163 events. 5/163 cut-off events. For 454/528 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1170 event pairs, 0 based on Foata normal form. 7/168 useless extension candidates. Maximal degree in co-relation 501. Up to 32 conditions per place. [2021-08-13 17:57:07,335 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 32 selfloop transitions, 15 changer transitions 13/72 dead transitions. [2021-08-13 17:57:07,335 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 72 transitions, 900 flow [2021-08-13 17:57:07,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 17:57:07,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 17:57:07,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-08-13 17:57:07,337 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8952380952380953 [2021-08-13 17:57:07,337 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-08-13 17:57:07,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-08-13 17:57:07,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:07,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-08-13 17:57:07,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:07,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:07,338 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:07,339 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 36 predicate places. [2021-08-13 17:57:07,339 INFO L482 AbstractCegarLoop]: Abstraction has has 66 places, 72 transitions, 900 flow [2021-08-13 17:57:07,339 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:07,341 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:07,341 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:07,341 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-13 17:57:07,341 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:57:07,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:07,342 INFO L82 PathProgramCache]: Analyzing trace with hash 29145747, now seen corresponding path program 7 times [2021-08-13 17:57:07,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:07,342 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449567129] [2021-08-13 17:57:07,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:07,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:07,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:07,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:07,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:07,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:07,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:07,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:07,381 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:07,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:07,399 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 17:57:07,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 17:57:07,413 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 17:57:07,413 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:07,413 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449567129] [2021-08-13 17:57:07,414 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449567129] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:07,416 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:07,416 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 17:57:07,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786005663] [2021-08-13 17:57:07,417 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 17:57:07,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:07,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 17:57:07,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 17:57:07,418 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 17:57:07,419 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 72 transitions, 900 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:07,419 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:07,419 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 17:57:07,419 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:07,467 INFO L129 PetriNetUnfolder]: 5/162 cut-off events. [2021-08-13 17:57:07,467 INFO L130 PetriNetUnfolder]: For 559/645 co-relation queries the response was YES. [2021-08-13 17:57:07,467 INFO L84 FinitePrefix]: Finished finitePrefix Result has 701 conditions, 162 events. 5/162 cut-off events. For 559/645 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1163 event pairs, 0 based on Foata normal form. 7/167 useless extension candidates. Maximal degree in co-relation 551. Up to 31 conditions per place. [2021-08-13 17:57:07,468 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 29 selfloop transitions, 14 changer transitions 16/71 dead transitions. [2021-08-13 17:57:07,468 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 71 transitions, 1004 flow [2021-08-13 17:57:07,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 17:57:07,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 17:57:07,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-08-13 17:57:07,470 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8952380952380953 [2021-08-13 17:57:07,470 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-08-13 17:57:07,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-08-13 17:57:07,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:07,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-08-13 17:57:07,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:07,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:07,473 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:07,473 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2021-08-13 17:57:07,473 INFO L482 AbstractCegarLoop]: Abstraction has has 71 places, 71 transitions, 1004 flow [2021-08-13 17:57:07,473 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:07,473 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:07,473 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:07,473 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-13 17:57:07,473 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:57:07,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:07,474 INFO L82 PathProgramCache]: Analyzing trace with hash -113651105, now seen corresponding path program 8 times [2021-08-13 17:57:07,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:07,475 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732712018] [2021-08-13 17:57:07,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:07,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:07,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:07,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:07,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:07,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:07,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:07,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:07,513 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:07,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:07,532 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 17:57:07,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 17:57:07,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:07,549 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:07,549 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732712018] [2021-08-13 17:57:07,549 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732712018] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:07,549 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:07,549 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 17:57:07,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473341636] [2021-08-13 17:57:07,550 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 17:57:07,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:07,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 17:57:07,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 17:57:07,551 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 17:57:07,552 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 71 transitions, 1004 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:07,552 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:07,552 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 17:57:07,552 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:07,612 INFO L129 PetriNetUnfolder]: 5/161 cut-off events. [2021-08-13 17:57:07,613 INFO L130 PetriNetUnfolder]: For 782/1009 co-relation queries the response was YES. [2021-08-13 17:57:07,613 INFO L84 FinitePrefix]: Finished finitePrefix Result has 752 conditions, 161 events. 5/161 cut-off events. For 782/1009 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1150 event pairs, 0 based on Foata normal form. 10/169 useless extension candidates. Maximal degree in co-relation 601. Up to 30 conditions per place. [2021-08-13 17:57:07,614 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 26 selfloop transitions, 14 changer transitions 18/70 dead transitions. [2021-08-13 17:57:07,614 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 70 transitions, 1104 flow [2021-08-13 17:57:07,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 17:57:07,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 17:57:07,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-08-13 17:57:07,615 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8952380952380953 [2021-08-13 17:57:07,615 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-08-13 17:57:07,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-08-13 17:57:07,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:07,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-08-13 17:57:07,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:07,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:07,617 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:07,617 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 46 predicate places. [2021-08-13 17:57:07,617 INFO L482 AbstractCegarLoop]: Abstraction has has 76 places, 70 transitions, 1104 flow [2021-08-13 17:57:07,617 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:07,617 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:07,618 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:07,618 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-13 17:57:07,618 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:57:07,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:07,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1761961241, now seen corresponding path program 9 times [2021-08-13 17:57:07,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:07,637 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549155167] [2021-08-13 17:57:07,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:07,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:07,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:07,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:07,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:07,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:07,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:07,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:07,666 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:07,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:07,682 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 17:57:07,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 17:57:07,696 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 17:57:07,696 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:07,696 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549155167] [2021-08-13 17:57:07,696 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549155167] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:07,696 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:07,697 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 17:57:07,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994494477] [2021-08-13 17:57:07,697 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 17:57:07,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:07,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 17:57:07,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 17:57:07,698 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 17:57:07,698 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 70 transitions, 1104 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:07,699 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:07,699 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 17:57:07,699 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:07,767 INFO L129 PetriNetUnfolder]: 5/160 cut-off events. [2021-08-13 17:57:07,768 INFO L130 PetriNetUnfolder]: For 989/1241 co-relation queries the response was YES. [2021-08-13 17:57:07,768 INFO L84 FinitePrefix]: Finished finitePrefix Result has 801 conditions, 160 events. 5/160 cut-off events. For 989/1241 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1138 event pairs, 0 based on Foata normal form. 9/167 useless extension candidates. Maximal degree in co-relation 651. Up to 29 conditions per place. [2021-08-13 17:57:07,769 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 24 selfloop transitions, 11 changer transitions 22/69 dead transitions. [2021-08-13 17:57:07,769 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 69 transitions, 1200 flow [2021-08-13 17:57:07,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 17:57:07,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 17:57:07,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-08-13 17:57:07,770 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8952380952380953 [2021-08-13 17:57:07,770 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-08-13 17:57:07,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-08-13 17:57:07,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:07,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-08-13 17:57:07,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:07,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:07,772 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:07,773 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 51 predicate places. [2021-08-13 17:57:07,773 INFO L482 AbstractCegarLoop]: Abstraction has has 81 places, 69 transitions, 1200 flow [2021-08-13 17:57:07,773 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:07,773 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:07,773 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:07,773 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-13 17:57:07,773 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:57:07,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:07,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1137980067, now seen corresponding path program 10 times [2021-08-13 17:57:07,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:07,774 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137871078] [2021-08-13 17:57:07,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:07,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:07,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:07,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:07,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:07,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:07,808 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:07,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:07,818 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:07,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:07,833 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 17:57:07,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 17:57:07,848 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 17:57:07,849 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:07,849 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137871078] [2021-08-13 17:57:07,849 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137871078] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:07,849 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:07,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 17:57:07,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503841481] [2021-08-13 17:57:07,849 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 17:57:07,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:07,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 17:57:07,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 17:57:07,851 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 17:57:07,851 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 69 transitions, 1200 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:07,851 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:07,851 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 17:57:07,851 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:07,917 INFO L129 PetriNetUnfolder]: 5/159 cut-off events. [2021-08-13 17:57:07,917 INFO L130 PetriNetUnfolder]: For 1123/1406 co-relation queries the response was YES. [2021-08-13 17:57:07,917 INFO L84 FinitePrefix]: Finished finitePrefix Result has 848 conditions, 159 events. 5/159 cut-off events. For 1123/1406 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1127 event pairs, 0 based on Foata normal form. 8/165 useless extension candidates. Maximal degree in co-relation 701. Up to 29 conditions per place. [2021-08-13 17:57:07,918 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 20 selfloop transitions, 11 changer transitions 25/68 dead transitions. [2021-08-13 17:57:07,918 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 68 transitions, 1292 flow [2021-08-13 17:57:07,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 17:57:07,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 17:57:07,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-08-13 17:57:07,919 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8952380952380953 [2021-08-13 17:57:07,919 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-08-13 17:57:07,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-08-13 17:57:07,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:07,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-08-13 17:57:07,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:07,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:07,921 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:07,921 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2021-08-13 17:57:07,921 INFO L482 AbstractCegarLoop]: Abstraction has has 86 places, 68 transitions, 1292 flow [2021-08-13 17:57:07,921 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:07,922 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:07,922 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:07,922 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-13 17:57:07,922 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:57:07,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:07,922 INFO L82 PathProgramCache]: Analyzing trace with hash 40448749, now seen corresponding path program 11 times [2021-08-13 17:57:07,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:07,922 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54366205] [2021-08-13 17:57:07,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:07,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:07,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:07,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:07,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:07,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:07,942 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:07,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:07,959 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:07,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:07,973 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 17:57:07,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 17:57:07,987 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 17:57:07,987 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:07,988 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54366205] [2021-08-13 17:57:07,988 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54366205] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:07,988 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:07,988 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 17:57:07,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193880513] [2021-08-13 17:57:07,988 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 17:57:07,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:07,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 17:57:07,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 17:57:07,989 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 17:57:07,989 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 68 transitions, 1292 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:07,989 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:07,990 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 17:57:07,990 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:08,043 INFO L129 PetriNetUnfolder]: 3/185 cut-off events. [2021-08-13 17:57:08,043 INFO L130 PetriNetUnfolder]: For 1120/1212 co-relation queries the response was YES. [2021-08-13 17:57:08,043 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1029 conditions, 185 events. 3/185 cut-off events. For 1120/1212 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1420 event pairs, 0 based on Foata normal form. 5/188 useless extension candidates. Maximal degree in co-relation 842. Up to 31 conditions per place. [2021-08-13 17:57:08,044 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 24 selfloop transitions, 12 changer transitions 27/75 dead transitions. [2021-08-13 17:57:08,044 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 75 transitions, 1572 flow [2021-08-13 17:57:08,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 17:57:08,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 17:57:08,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-08-13 17:57:08,045 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8952380952380953 [2021-08-13 17:57:08,045 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-08-13 17:57:08,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-08-13 17:57:08,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:08,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-08-13 17:57:08,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:08,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:08,047 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:08,047 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 61 predicate places. [2021-08-13 17:57:08,047 INFO L482 AbstractCegarLoop]: Abstraction has has 91 places, 75 transitions, 1572 flow [2021-08-13 17:57:08,047 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:08,047 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:08,047 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:08,048 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-13 17:57:08,048 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:57:08,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:08,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1303130891, now seen corresponding path program 12 times [2021-08-13 17:57:08,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:08,048 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920128013] [2021-08-13 17:57:08,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:08,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:08,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:08,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:08,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:08,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:08,067 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:08,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:08,083 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:08,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:08,098 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 17:57:08,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 17:57:08,112 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 17:57:08,112 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:08,112 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920128013] [2021-08-13 17:57:08,112 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920128013] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:08,112 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:08,112 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 17:57:08,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623353906] [2021-08-13 17:57:08,113 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 17:57:08,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:08,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 17:57:08,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 17:57:08,114 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 17:57:08,114 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 75 transitions, 1572 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:08,114 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:08,114 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 17:57:08,114 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:08,166 INFO L129 PetriNetUnfolder]: 3/184 cut-off events. [2021-08-13 17:57:08,166 INFO L130 PetriNetUnfolder]: For 1389/1592 co-relation queries the response was YES. [2021-08-13 17:57:08,166 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1080 conditions, 184 events. 3/184 cut-off events. For 1389/1592 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1416 event pairs, 0 based on Foata normal form. 9/191 useless extension candidates. Maximal degree in co-relation 897. Up to 30 conditions per place. [2021-08-13 17:57:08,167 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 21 selfloop transitions, 11 changer transitions 30/74 dead transitions. [2021-08-13 17:57:08,167 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 74 transitions, 1672 flow [2021-08-13 17:57:08,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 17:57:08,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 17:57:08,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-08-13 17:57:08,168 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8952380952380953 [2021-08-13 17:57:08,168 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-08-13 17:57:08,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-08-13 17:57:08,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:08,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-08-13 17:57:08,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:08,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:08,170 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:08,170 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 66 predicate places. [2021-08-13 17:57:08,170 INFO L482 AbstractCegarLoop]: Abstraction has has 96 places, 74 transitions, 1672 flow [2021-08-13 17:57:08,170 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:08,170 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:08,170 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:08,170 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-13 17:57:08,171 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:57:08,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:08,171 INFO L82 PathProgramCache]: Analyzing trace with hash 452844333, now seen corresponding path program 13 times [2021-08-13 17:57:08,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:08,171 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451770857] [2021-08-13 17:57:08,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:08,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:08,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:08,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:08,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:08,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:08,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:08,224 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:08,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:08,245 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 17:57:08,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 17:57:08,261 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 17:57:08,261 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:08,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451770857] [2021-08-13 17:57:08,263 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451770857] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:08,263 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:08,263 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 17:57:08,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444924502] [2021-08-13 17:57:08,264 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 17:57:08,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:08,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 17:57:08,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 17:57:08,265 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 17:57:08,266 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 74 transitions, 1672 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:08,266 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:08,266 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 17:57:08,266 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:08,345 INFO L129 PetriNetUnfolder]: 1/210 cut-off events. [2021-08-13 17:57:08,345 INFO L130 PetriNetUnfolder]: For 1739/1875 co-relation queries the response was YES. [2021-08-13 17:57:08,345 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1281 conditions, 210 events. 1/210 cut-off events. For 1739/1875 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1716 event pairs, 0 based on Foata normal form. 5/213 useless extension candidates. Maximal degree in co-relation 1053. Up to 34 conditions per place. [2021-08-13 17:57:08,346 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 25 selfloop transitions, 12 changer transitions 32/81 dead transitions. [2021-08-13 17:57:08,346 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 81 transitions, 1992 flow [2021-08-13 17:57:08,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 17:57:08,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 17:57:08,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-08-13 17:57:08,348 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8952380952380953 [2021-08-13 17:57:08,348 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-08-13 17:57:08,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-08-13 17:57:08,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:08,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-08-13 17:57:08,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:08,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:08,349 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:08,350 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 71 predicate places. [2021-08-13 17:57:08,350 INFO L482 AbstractCegarLoop]: Abstraction has has 101 places, 81 transitions, 1992 flow [2021-08-13 17:57:08,350 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:08,350 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:08,350 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:08,350 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-13 17:57:08,350 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:57:08,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:08,351 INFO L82 PathProgramCache]: Analyzing trace with hash -495604779, now seen corresponding path program 14 times [2021-08-13 17:57:08,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:08,351 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066264291] [2021-08-13 17:57:08,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:08,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:08,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:08,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:08,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:08,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:08,374 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:08,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:08,383 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:08,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:08,401 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 17:57:08,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 17:57:08,414 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 17:57:08,414 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:08,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066264291] [2021-08-13 17:57:08,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066264291] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:08,415 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:08,415 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 17:57:08,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934995822] [2021-08-13 17:57:08,416 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 17:57:08,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:08,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 17:57:08,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 17:57:08,417 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 17:57:08,417 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 81 transitions, 1992 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:08,417 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:08,417 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 17:57:08,417 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:08,472 INFO L129 PetriNetUnfolder]: 1/209 cut-off events. [2021-08-13 17:57:08,472 INFO L130 PetriNetUnfolder]: For 1927/2079 co-relation queries the response was YES. [2021-08-13 17:57:08,472 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1336 conditions, 209 events. 1/209 cut-off events. For 1927/2079 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1717 event pairs, 0 based on Foata normal form. 5/212 useless extension candidates. Maximal degree in co-relation 1113. Up to 33 conditions per place. [2021-08-13 17:57:08,473 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 24 selfloop transitions, 8 changer transitions 36/80 dead transitions. [2021-08-13 17:57:08,473 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 80 transitions, 2100 flow [2021-08-13 17:57:08,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 17:57:08,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 17:57:08,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2021-08-13 17:57:08,474 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8904761904761904 [2021-08-13 17:57:08,475 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 187 transitions. [2021-08-13 17:57:08,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 187 transitions. [2021-08-13 17:57:08,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:08,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 187 transitions. [2021-08-13 17:57:08,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:08,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:08,476 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:08,476 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 76 predicate places. [2021-08-13 17:57:08,477 INFO L482 AbstractCegarLoop]: Abstraction has has 106 places, 80 transitions, 2100 flow [2021-08-13 17:57:08,477 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:08,477 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:08,477 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:08,477 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-13 17:57:08,477 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:57:08,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:08,477 INFO L82 PathProgramCache]: Analyzing trace with hash -564567633, now seen corresponding path program 15 times [2021-08-13 17:57:08,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:08,478 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945939035] [2021-08-13 17:57:08,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:08,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:08,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:08,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:08,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:08,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:08,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:08,505 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:08,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:08,519 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 17:57:08,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 17:57:08,532 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 17:57:08,533 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:08,533 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945939035] [2021-08-13 17:57:08,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945939035] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:08,533 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:08,533 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 17:57:08,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159822930] [2021-08-13 17:57:08,533 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 17:57:08,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:08,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 17:57:08,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 17:57:08,535 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 17:57:08,535 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 80 transitions, 2100 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:08,535 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:08,535 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 17:57:08,536 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:08,604 INFO L129 PetriNetUnfolder]: 1/208 cut-off events. [2021-08-13 17:57:08,605 INFO L130 PetriNetUnfolder]: For 2229/2510 co-relation queries the response was YES. [2021-08-13 17:57:08,605 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1389 conditions, 208 events. 1/208 cut-off events. For 2229/2510 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1700 event pairs, 0 based on Foata normal form. 1/207 useless extension candidates. Maximal degree in co-relation 1173. Up to 33 conditions per place. [2021-08-13 17:57:08,606 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 17 selfloop transitions, 11 changer transitions 39/79 dead transitions. [2021-08-13 17:57:08,606 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 79 transitions, 2204 flow [2021-08-13 17:57:08,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 17:57:08,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 17:57:08,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-08-13 17:57:08,607 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8952380952380953 [2021-08-13 17:57:08,607 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-08-13 17:57:08,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-08-13 17:57:08,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:08,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-08-13 17:57:08,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:08,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:08,610 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:08,610 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 81 predicate places. [2021-08-13 17:57:08,610 INFO L482 AbstractCegarLoop]: Abstraction has has 111 places, 79 transitions, 2204 flow [2021-08-13 17:57:08,611 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:08,611 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:08,611 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:08,611 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-13 17:57:08,611 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:57:08,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:08,611 INFO L82 PathProgramCache]: Analyzing trace with hash 653581197, now seen corresponding path program 16 times [2021-08-13 17:57:08,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:08,611 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618385119] [2021-08-13 17:57:08,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:08,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:08,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:08,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:08,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:08,634 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:08,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:08,650 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:08,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:08,670 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 17:57:08,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 17:57:08,684 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 17:57:08,684 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:08,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618385119] [2021-08-13 17:57:08,684 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618385119] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:08,684 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:08,684 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 17:57:08,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575495490] [2021-08-13 17:57:08,685 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 17:57:08,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:08,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 17:57:08,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 17:57:08,686 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 17:57:08,686 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 79 transitions, 2204 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:08,686 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:08,686 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 17:57:08,686 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:08,746 INFO L129 PetriNetUnfolder]: 1/207 cut-off events. [2021-08-13 17:57:08,747 INFO L130 PetriNetUnfolder]: For 2143/2335 co-relation queries the response was YES. [2021-08-13 17:57:08,747 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1440 conditions, 207 events. 1/207 cut-off events. For 2143/2335 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1684 event pairs, 0 based on Foata normal form. 1/206 useless extension candidates. Maximal degree in co-relation 1233. Up to 32 conditions per place. [2021-08-13 17:57:08,748 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 16 selfloop transitions, 9 changer transitions 41/78 dead transitions. [2021-08-13 17:57:08,748 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 78 transitions, 2304 flow [2021-08-13 17:57:08,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 17:57:08,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 17:57:08,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-08-13 17:57:08,749 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8952380952380953 [2021-08-13 17:57:08,749 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-08-13 17:57:08,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-08-13 17:57:08,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:08,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-08-13 17:57:08,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:08,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:08,751 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:08,752 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 86 predicate places. [2021-08-13 17:57:08,752 INFO L482 AbstractCegarLoop]: Abstraction has has 116 places, 78 transitions, 2304 flow [2021-08-13 17:57:08,752 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:08,752 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:08,752 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:08,752 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-13 17:57:08,752 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:57:08,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:08,753 INFO L82 PathProgramCache]: Analyzing trace with hash 956423449, now seen corresponding path program 17 times [2021-08-13 17:57:08,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:08,753 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234956809] [2021-08-13 17:57:08,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:08,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:08,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:08,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:08,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:08,774 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:08,779 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:08,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:08,793 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:08,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:08,808 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 17:57:08,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 17:57:08,821 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 17:57:08,821 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:08,821 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234956809] [2021-08-13 17:57:08,821 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234956809] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:08,822 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:08,822 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 17:57:08,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962803696] [2021-08-13 17:57:08,822 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 17:57:08,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:08,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 17:57:08,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 17:57:08,823 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 17:57:08,823 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 78 transitions, 2304 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:08,823 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:08,823 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 17:57:08,824 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:08,882 INFO L129 PetriNetUnfolder]: 1/206 cut-off events. [2021-08-13 17:57:08,882 INFO L130 PetriNetUnfolder]: For 2441/2777 co-relation queries the response was YES. [2021-08-13 17:57:08,882 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1489 conditions, 206 events. 1/206 cut-off events. For 2441/2777 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 1680 event pairs, 0 based on Foata normal form. 6/210 useless extension candidates. Maximal degree in co-relation 1293. Up to 32 conditions per place. [2021-08-13 17:57:08,883 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 13 selfloop transitions, 8 changer transitions 44/77 dead transitions. [2021-08-13 17:57:08,883 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 77 transitions, 2400 flow [2021-08-13 17:57:08,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 17:57:08,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 17:57:08,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2021-08-13 17:57:08,884 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8952380952380953 [2021-08-13 17:57:08,884 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 188 transitions. [2021-08-13 17:57:08,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 188 transitions. [2021-08-13 17:57:08,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:08,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 188 transitions. [2021-08-13 17:57:08,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:08,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:08,886 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:08,886 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 91 predicate places. [2021-08-13 17:57:08,886 INFO L482 AbstractCegarLoop]: Abstraction has has 121 places, 77 transitions, 2400 flow [2021-08-13 17:57:08,886 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:08,886 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:08,886 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:08,887 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-13 17:57:08,887 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:57:08,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:08,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1492243695, now seen corresponding path program 18 times [2021-08-13 17:57:08,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:08,887 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976521066] [2021-08-13 17:57:08,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:08,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:08,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:08,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:08,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:08,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:08,918 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:08,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:08,929 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:08,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:08,967 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 17:57:08,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 17:57:08,981 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 17:57:08,981 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:08,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976521066] [2021-08-13 17:57:08,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976521066] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:08,981 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:08,981 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 17:57:08,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70610794] [2021-08-13 17:57:08,982 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 17:57:08,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:08,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 17:57:08,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 17:57:08,983 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 17:57:08,983 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 77 transitions, 2400 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:08,983 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:08,983 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 17:57:08,983 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:09,050 INFO L129 PetriNetUnfolder]: 0/224 cut-off events. [2021-08-13 17:57:09,051 INFO L130 PetriNetUnfolder]: For 2788/3084 co-relation queries the response was YES. [2021-08-13 17:57:09,051 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1677 conditions, 224 events. 0/224 cut-off events. For 2788/3084 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 1889 event pairs, 0 based on Foata normal form. 1/223 useless extension candidates. Maximal degree in co-relation 0. Up to 36 conditions per place. [2021-08-13 17:57:09,052 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 17 selfloop transitions, 7 changer transitions 46/82 dead transitions. [2021-08-13 17:57:09,052 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 82 transitions, 2720 flow [2021-08-13 17:57:09,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 17:57:09,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 17:57:09,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2021-08-13 17:57:09,053 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8904761904761904 [2021-08-13 17:57:09,053 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 187 transitions. [2021-08-13 17:57:09,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 187 transitions. [2021-08-13 17:57:09,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:09,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 187 transitions. [2021-08-13 17:57:09,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:09,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:09,054 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:09,054 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 96 predicate places. [2021-08-13 17:57:09,054 INFO L482 AbstractCegarLoop]: Abstraction has has 126 places, 82 transitions, 2720 flow [2021-08-13 17:57:09,055 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:09,055 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:09,055 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:09,055 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-13 17:57:09,055 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:57:09,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:09,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1982028989, now seen corresponding path program 19 times [2021-08-13 17:57:09,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:09,056 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084560870] [2021-08-13 17:57:09,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:09,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:09,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:09,065 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:09,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:09,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:09,071 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:09,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:09,080 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:09,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:09,093 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 17:57:09,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 17:57:09,106 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 17:57:09,107 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:09,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084560870] [2021-08-13 17:57:09,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084560870] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:09,107 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:09,107 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 17:57:09,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632007961] [2021-08-13 17:57:09,107 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 17:57:09,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:09,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 17:57:09,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 17:57:09,108 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 17:57:09,109 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 82 transitions, 2720 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:09,109 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:09,109 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 17:57:09,109 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:09,172 INFO L129 PetriNetUnfolder]: 0/223 cut-off events. [2021-08-13 17:57:09,172 INFO L130 PetriNetUnfolder]: For 3144/3584 co-relation queries the response was YES. [2021-08-13 17:57:09,172 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1728 conditions, 223 events. 0/223 cut-off events. For 3144/3584 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1877 event pairs, 0 based on Foata normal form. 6/227 useless extension candidates. Maximal degree in co-relation 0. Up to 35 conditions per place. [2021-08-13 17:57:09,173 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 15 selfloop transitions, 4 changer transitions 50/81 dead transitions. [2021-08-13 17:57:09,173 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 81 transitions, 2820 flow [2021-08-13 17:57:09,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 17:57:09,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 17:57:09,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions. [2021-08-13 17:57:09,174 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8857142857142857 [2021-08-13 17:57:09,174 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 186 transitions. [2021-08-13 17:57:09,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 186 transitions. [2021-08-13 17:57:09,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:09,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 186 transitions. [2021-08-13 17:57:09,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:09,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:09,175 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:09,176 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2021-08-13 17:57:09,176 INFO L482 AbstractCegarLoop]: Abstraction has has 131 places, 81 transitions, 2820 flow [2021-08-13 17:57:09,176 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:09,176 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:09,176 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:09,176 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-13 17:57:09,176 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:57:09,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:09,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1776475545, now seen corresponding path program 20 times [2021-08-13 17:57:09,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:09,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281149669] [2021-08-13 17:57:09,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:09,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:09,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:09,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:09,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:09,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:09,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:09,201 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:09,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:09,216 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 17:57:09,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 17:57:09,231 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 17:57:09,231 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:09,231 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281149669] [2021-08-13 17:57:09,231 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281149669] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:09,231 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:09,231 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 17:57:09,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971004985] [2021-08-13 17:57:09,231 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 17:57:09,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:09,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 17:57:09,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 17:57:09,232 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 17:57:09,233 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 81 transitions, 2820 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:09,233 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:09,233 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 17:57:09,233 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:09,285 INFO L129 PetriNetUnfolder]: 0/222 cut-off events. [2021-08-13 17:57:09,286 INFO L130 PetriNetUnfolder]: For 3149/3549 co-relation queries the response was YES. [2021-08-13 17:57:09,286 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1777 conditions, 222 events. 0/222 cut-off events. For 3149/3549 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 1873 event pairs, 0 based on Foata normal form. 1/221 useless extension candidates. Maximal degree in co-relation 0. Up to 34 conditions per place. [2021-08-13 17:57:09,287 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 9 selfloop transitions, 7 changer transitions 52/80 dead transitions. [2021-08-13 17:57:09,287 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 80 transitions, 2916 flow [2021-08-13 17:57:09,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 17:57:09,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 17:57:09,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2021-08-13 17:57:09,288 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8904761904761904 [2021-08-13 17:57:09,288 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 187 transitions. [2021-08-13 17:57:09,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 187 transitions. [2021-08-13 17:57:09,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:09,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 187 transitions. [2021-08-13 17:57:09,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:09,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:09,289 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:09,289 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 106 predicate places. [2021-08-13 17:57:09,289 INFO L482 AbstractCegarLoop]: Abstraction has has 136 places, 80 transitions, 2916 flow [2021-08-13 17:57:09,289 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:09,289 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:09,290 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:09,290 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-08-13 17:57:09,290 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:57:09,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:09,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1525309647, now seen corresponding path program 21 times [2021-08-13 17:57:09,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:09,290 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434335609] [2021-08-13 17:57:09,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:09,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:09,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:09,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:09,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:09,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:09,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:09,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:09,314 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:09,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:09,327 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 17:57:09,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 17:57:09,340 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 17:57:09,340 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:09,340 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434335609] [2021-08-13 17:57:09,340 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434335609] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:09,340 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:09,340 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 17:57:09,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816697428] [2021-08-13 17:57:09,341 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 17:57:09,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:09,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 17:57:09,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 17:57:09,341 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 17:57:09,342 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 80 transitions, 2916 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:09,342 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:09,342 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 17:57:09,342 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:09,406 INFO L129 PetriNetUnfolder]: 0/221 cut-off events. [2021-08-13 17:57:09,406 INFO L130 PetriNetUnfolder]: For 3313/3765 co-relation queries the response was YES. [2021-08-13 17:57:09,406 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1824 conditions, 221 events. 0/221 cut-off events. For 3313/3765 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 1870 event pairs, 0 based on Foata normal form. 1/220 useless extension candidates. Maximal degree in co-relation 0. Up to 33 conditions per place. [2021-08-13 17:57:09,407 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 7 selfloop transitions, 5 changer transitions 55/79 dead transitions. [2021-08-13 17:57:09,407 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 79 transitions, 3008 flow [2021-08-13 17:57:09,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 17:57:09,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 17:57:09,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2021-08-13 17:57:09,408 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8904761904761904 [2021-08-13 17:57:09,408 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 187 transitions. [2021-08-13 17:57:09,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 187 transitions. [2021-08-13 17:57:09,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:09,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 187 transitions. [2021-08-13 17:57:09,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:09,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:09,409 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:09,409 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2021-08-13 17:57:09,409 INFO L482 AbstractCegarLoop]: Abstraction has has 141 places, 79 transitions, 3008 flow [2021-08-13 17:57:09,409 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:09,409 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:09,409 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:09,409 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-08-13 17:57:09,410 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:57:09,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:09,410 INFO L82 PathProgramCache]: Analyzing trace with hash -557705213, now seen corresponding path program 22 times [2021-08-13 17:57:09,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:09,410 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874912339] [2021-08-13 17:57:09,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:09,419 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:09,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:09,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:09,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:09,425 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:09,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 17:57:09,436 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:09,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:09,449 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 17:57:09,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 17:57:09,462 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 17:57:09,463 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:09,463 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874912339] [2021-08-13 17:57:09,463 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874912339] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:09,463 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:09,463 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 17:57:09,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290444349] [2021-08-13 17:57:09,463 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 17:57:09,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:09,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 17:57:09,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 17:57:09,464 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 17:57:09,464 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 79 transitions, 3008 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:09,464 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:09,464 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 17:57:09,465 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:09,549 INFO L129 PetriNetUnfolder]: 0/220 cut-off events. [2021-08-13 17:57:09,550 INFO L130 PetriNetUnfolder]: For 4104/4860 co-relation queries the response was YES. [2021-08-13 17:57:09,550 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1869 conditions, 220 events. 0/220 cut-off events. For 4104/4860 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1858 event pairs, 0 based on Foata normal form. 1/219 useless extension candidates. Maximal degree in co-relation 0. Up to 32 conditions per place. [2021-08-13 17:57:09,551 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 4 selfloop transitions, 4 changer transitions 58/78 dead transitions. [2021-08-13 17:57:09,551 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 78 transitions, 3096 flow [2021-08-13 17:57:09,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 17:57:09,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 17:57:09,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2021-08-13 17:57:09,552 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8904761904761904 [2021-08-13 17:57:09,552 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 187 transitions. [2021-08-13 17:57:09,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 187 transitions. [2021-08-13 17:57:09,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:09,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 187 transitions. [2021-08-13 17:57:09,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:09,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:09,553 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:09,553 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 116 predicate places. [2021-08-13 17:57:09,553 INFO L482 AbstractCegarLoop]: Abstraction has has 146 places, 78 transitions, 3096 flow [2021-08-13 17:57:09,553 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:09,553 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:09,553 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:09,553 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-08-13 17:57:09,553 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:57:09,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:09,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1062900079, now seen corresponding path program 23 times [2021-08-13 17:57:09,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:09,554 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749487996] [2021-08-13 17:57:09,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:09,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:09,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:09,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:09,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:09,619 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:09,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:09,645 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-08-13 17:57:09,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-08-13 17:57:09,660 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 17:57:09,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 17:57:09,697 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 17:57:09,698 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:09,698 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749487996] [2021-08-13 17:57:09,698 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749487996] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:09,698 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:09,698 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 17:57:09,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203313406] [2021-08-13 17:57:09,698 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 17:57:09,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:09,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 17:57:09,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 17:57:09,699 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 17:57:09,699 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 78 transitions, 3096 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:09,700 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:09,700 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 17:57:09,700 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:09,769 INFO L129 PetriNetUnfolder]: 0/219 cut-off events. [2021-08-13 17:57:09,770 INFO L130 PetriNetUnfolder]: For 3894/4698 co-relation queries the response was YES. [2021-08-13 17:57:09,770 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1912 conditions, 219 events. 0/219 cut-off events. For 3894/4698 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1870 event pairs, 0 based on Foata normal form. 1/218 useless extension candidates. Maximal degree in co-relation 0. Up to 31 conditions per place. [2021-08-13 17:57:09,771 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 2 selfloop transitions, 3 changer transitions 60/77 dead transitions. [2021-08-13 17:57:09,771 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 77 transitions, 3180 flow [2021-08-13 17:57:09,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 17:57:09,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 17:57:09,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions. [2021-08-13 17:57:09,772 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8857142857142857 [2021-08-13 17:57:09,772 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 186 transitions. [2021-08-13 17:57:09,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 186 transitions. [2021-08-13 17:57:09,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:09,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 186 transitions. [2021-08-13 17:57:09,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:09,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:09,773 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:09,773 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2021-08-13 17:57:09,773 INFO L482 AbstractCegarLoop]: Abstraction has has 151 places, 77 transitions, 3180 flow [2021-08-13 17:57:09,774 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:09,774 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 17:57:09,774 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 17:57:09,774 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-08-13 17:57:09,774 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 17:57:09,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 17:57:09,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1106179767, now seen corresponding path program 24 times [2021-08-13 17:57:09,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 17:57:09,775 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385483366] [2021-08-13 17:57:09,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 17:57:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 17:57:09,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:09,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 17:57:09,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 17:57:09,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 17:57:09,792 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-08-13 17:57:09,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-08-13 17:57:09,802 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-08-13 17:57:09,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 17:57:09,821 INFO L142 QuantifierPusher]: treesize reduction 27, result has 48.1 percent of original size [2021-08-13 17:57:09,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-08-13 17:57:09,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 17:57:09,836 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 17:57:09,836 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385483366] [2021-08-13 17:57:09,836 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385483366] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 17:57:09,836 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 17:57:09,836 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 17:57:09,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429254634] [2021-08-13 17:57:09,837 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 17:57:09,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 17:57:09,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 17:57:09,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-13 17:57:09,838 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 35 [2021-08-13 17:57:09,838 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 77 transitions, 3180 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:09,838 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 17:57:09,838 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 35 [2021-08-13 17:57:09,838 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 17:57:09,896 INFO L129 PetriNetUnfolder]: 0/218 cut-off events. [2021-08-13 17:57:09,897 INFO L130 PetriNetUnfolder]: For 4189/4861 co-relation queries the response was YES. [2021-08-13 17:57:09,897 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1953 conditions, 218 events. 0/218 cut-off events. For 4189/4861 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 1864 event pairs, 0 based on Foata normal form. 1/217 useless extension candidates. Maximal degree in co-relation 0. Up to 30 conditions per place. [2021-08-13 17:57:09,897 INFO L132 encePairwiseOnDemand]: 30/35 looper letters, 0 selfloop transitions, 0 changer transitions 76/76 dead transitions. [2021-08-13 17:57:09,897 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 76 transitions, 3260 flow [2021-08-13 17:57:09,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 17:57:09,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 17:57:09,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2021-08-13 17:57:09,898 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8809523809523809 [2021-08-13 17:57:09,898 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 185 transitions. [2021-08-13 17:57:09,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 185 transitions. [2021-08-13 17:57:09,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 17:57:09,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 185 transitions. [2021-08-13 17:57:09,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 30.833333333333332) internal successors, (185), 6 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:09,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:09,899 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:09,899 INFO L348 CegarLoopForPetriNet]: 30 programPoint places, 125 predicate places. [2021-08-13 17:57:09,900 INFO L482 AbstractCegarLoop]: Abstraction has has 155 places, 76 transitions, 3260 flow [2021-08-13 17:57:09,900 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 17:57:09,900 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown