/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 03:22:29,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 03:22:29,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 03:22:29,047 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-13 03:22:29,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-13 03:22:29,048 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-13 03:22:29,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-13 03:22:29,050 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-13 03:22:29,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-13 03:22:29,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-13 03:22:29,052 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-13 03:22:29,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-13 03:22:29,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 03:22:29,054 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 03:22:29,054 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 03:22:29,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 03:22:29,055 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 03:22:29,056 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 03:22:29,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 03:22:29,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 03:22:29,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 03:22:29,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 03:22:29,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 03:22:29,061 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 03:22:29,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-13 03:22:29,063 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-13 03:22:29,063 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-13 03:22:29,063 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-13 03:22:29,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-13 03:22:29,064 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-13 03:22:29,064 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-13 03:22:29,065 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-13 03:22:29,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-13 03:22:29,066 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-13 03:22:29,066 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-13 03:22:29,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-13 03:22:29,067 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-13 03:22:29,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-13 03:22:29,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 03:22:29,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 03:22:29,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 03:22:29,081 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative.epf [2021-08-13 03:22:29,104 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 03:22:29,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 03:22:29,105 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 03:22:29,105 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 03:22:29,105 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 03:22:29,105 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 03:22:29,105 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 03:22:29,105 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 03:22:29,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 03:22:29,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 03:22:29,106 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 03:22:29,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 03:22:29,106 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 03:22:29,106 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 03:22:29,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 03:22:29,106 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 03:22:29,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 03:22:29,107 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 03:22:29,107 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 03:22:29,107 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 03:22:29,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 03:22:29,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 03:22:29,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 03:22:29,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 03:22:29,107 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 03:22:29,107 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 03:22:29,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 03:22:29,107 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 03:22:29,108 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 03:22:29,108 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 03:22:29,108 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 03:22:29,108 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 03:22:29,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 03:22:29,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 03:22:29,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 03:22:29,371 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-13 03:22:29,385 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-13 03:22:29,386 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-3.wvr.bpl [2021-08-13 03:22:29,386 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-3.wvr.bpl' [2021-08-13 03:22:29,406 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 03:22:29,407 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-13 03:22:29,408 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 03:22:29,412 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 03:22:29,412 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 03:22:29,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 03:22:29" (1/1) ... [2021-08-13 03:22:29,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 03:22:29" (1/1) ... [2021-08-13 03:22:29,440 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 03:22:29,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 03:22:29,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 03:22:29,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 03:22:29,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 03:22:29" (1/1) ... [2021-08-13 03:22:29,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 03:22:29" (1/1) ... [2021-08-13 03:22:29,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 03:22:29" (1/1) ... [2021-08-13 03:22:29,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 03:22:29" (1/1) ... [2021-08-13 03:22:29,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 03:22:29" (1/1) ... [2021-08-13 03:22:29,449 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 03:22:29" (1/1) ... [2021-08-13 03:22:29,449 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 03:22:29" (1/1) ... [2021-08-13 03:22:29,453 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 03:22:29,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 03:22:29,459 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 03:22:29,459 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 03:22:29,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 03:22:29" (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 03:22:29,511 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-08-13 03:22:29,511 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-13 03:22:29,511 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-13 03:22:29,511 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-08-13 03:22:29,512 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-13 03:22:29,512 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-13 03:22:29,512 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-13 03:22:29,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 03:22:29,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 03:22:29,512 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-08-13 03:22:29,512 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-08-13 03:22:29,512 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-08-13 03:22:29,513 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 03:22:29,646 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 03:22:29,647 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-13 03:22:29,648 INFO L202 PluginConnector]: Adding new model ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 03:22:29 BoogieIcfgContainer [2021-08-13 03:22:29,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 03:22:29,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 03:22:29,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 03:22:29,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 03:22:29,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 03:22:29" (1/2) ... [2021-08-13 03:22:29,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10192af9 and model type ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 03:22:29, skipping insertion in model container [2021-08-13 03:22:29,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 03:22:29" (2/2) ... [2021-08-13 03:22:29,654 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-3.wvr.bpl [2021-08-13 03:22:29,658 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 03:22:29,659 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 03:22:29,659 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 03:22:29,685 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-08-13 03:22:29,700 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-13 03:22:29,714 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 03:22:29,714 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 03:22:29,714 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 03:22:29,714 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 03:22:29,714 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 03:22:29,714 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 03:22:29,715 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 03:22:29,715 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 03:22:29,721 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 40 places, 30 transitions, 84 flow [2021-08-13 03:22:29,748 INFO L129 PetriNetUnfolder]: 0/27 cut-off events. [2021-08-13 03:22:29,749 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-08-13 03:22:29,750 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 27 events. 0/27 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-08-13 03:22:29,750 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 30 transitions, 84 flow [2021-08-13 03:22:29,753 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 25 transitions, 68 flow [2021-08-13 03:22:29,780 INFO L129 PetriNetUnfolder]: 0/24 cut-off events. [2021-08-13 03:22:29,780 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-08-13 03:22:29,780 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 03:22:29,781 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 03:22:29,781 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 03:22:29,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 03:22:29,784 INFO L82 PathProgramCache]: Analyzing trace with hash 928567053, now seen corresponding path program 1 times [2021-08-13 03:22:29,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 03:22:29,790 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455381708] [2021-08-13 03:22:29,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 03:22:29,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 03:22:29,983 INFO L142 QuantifierPusher]: treesize reduction 11, result has 52.2 percent of original size [2021-08-13 03:22:29,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-08-13 03:22:30,029 INFO L142 QuantifierPusher]: treesize reduction 4, result has 60.0 percent of original size [2021-08-13 03:22:30,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-08-13 03:22:30,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:30,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-13 03:22:30,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:30,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 03:22:30,059 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:30,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-08-13 03:22:30,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:30,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 03:22:30,063 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 03:22:30,063 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 03:22:30,063 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455381708] [2021-08-13 03:22:30,063 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455381708] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 03:22:30,064 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 03:22:30,064 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 03:22:30,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990333654] [2021-08-13 03:22:30,069 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 03:22:30,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 03:22:30,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 03:22:30,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-08-13 03:22:30,086 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 30 [2021-08-13 03:22:30,089 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 25 transitions, 68 flow. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:30,089 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 03:22:30,089 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 30 [2021-08-13 03:22:30,090 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 03:22:30,198 INFO L129 PetriNetUnfolder]: 43/165 cut-off events. [2021-08-13 03:22:30,198 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-08-13 03:22:30,201 INFO L84 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 165 events. 43/165 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 803 event pairs, 18 based on Foata normal form. 1/165 useless extension candidates. Maximal degree in co-relation 255. Up to 54 conditions per place. [2021-08-13 03:22:30,203 INFO L132 encePairwiseOnDemand]: 21/30 looper letters, 13 selfloop transitions, 7 changer transitions 1/37 dead transitions. [2021-08-13 03:22:30,203 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 37 transitions, 134 flow [2021-08-13 03:22:30,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 03:22:30,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 03:22:30,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2021-08-13 03:22:30,216 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8133333333333334 [2021-08-13 03:22:30,217 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 122 transitions. [2021-08-13 03:22:30,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 122 transitions. [2021-08-13 03:22:30,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 03:22:30,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 122 transitions. [2021-08-13 03:22:30,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:30,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:30,232 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:30,233 INFO L348 CegarLoopForPetriNet]: 35 programPoint places, 4 predicate places. [2021-08-13 03:22:30,233 INFO L482 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 134 flow [2021-08-13 03:22:30,233 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:30,233 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 03:22:30,233 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 03:22:30,233 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 03:22:30,233 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 03:22:30,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 03:22:30,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1387160825, now seen corresponding path program 2 times [2021-08-13 03:22:30,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 03:22:30,236 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135430709] [2021-08-13 03:22:30,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 03:22:30,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 03:22:30,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:30,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 03:22:30,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:30,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 03:22:30,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:30,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 03:22:30,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:30,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 03:22:30,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:30,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 03:22:30,302 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 03:22:30,302 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 03:22:30,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135430709] [2021-08-13 03:22:30,303 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135430709] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 03:22:30,304 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 03:22:30,304 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 03:22:30,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884858114] [2021-08-13 03:22:30,306 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 03:22:30,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 03:22:30,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 03:22:30,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-13 03:22:30,311 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 30 [2021-08-13 03:22:30,311 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 134 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:30,311 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 03:22:30,312 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 30 [2021-08-13 03:22:30,312 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 03:22:30,540 INFO L129 PetriNetUnfolder]: 270/670 cut-off events. [2021-08-13 03:22:30,540 INFO L130 PetriNetUnfolder]: For 137/142 co-relation queries the response was YES. [2021-08-13 03:22:30,553 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1408 conditions, 670 events. 270/670 cut-off events. For 137/142 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4316 event pairs, 80 based on Foata normal form. 10/659 useless extension candidates. Maximal degree in co-relation 1383. Up to 197 conditions per place. [2021-08-13 03:22:30,555 INFO L132 encePairwiseOnDemand]: 22/30 looper letters, 25 selfloop transitions, 22 changer transitions 0/67 dead transitions. [2021-08-13 03:22:30,555 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 67 transitions, 316 flow [2021-08-13 03:22:30,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 03:22:30,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 03:22:30,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2021-08-13 03:22:30,557 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2021-08-13 03:22:30,557 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 150 transitions. [2021-08-13 03:22:30,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 150 transitions. [2021-08-13 03:22:30,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 03:22:30,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 150 transitions. [2021-08-13 03:22:30,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:30,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 30.0) internal successors, (210), 7 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:30,559 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 30.0) internal successors, (210), 7 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:30,560 INFO L348 CegarLoopForPetriNet]: 35 programPoint places, 9 predicate places. [2021-08-13 03:22:30,560 INFO L482 AbstractCegarLoop]: Abstraction has has 44 places, 67 transitions, 316 flow [2021-08-13 03:22:30,560 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:30,560 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 03:22:30,560 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 03:22:30,561 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 03:22:30,561 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 03:22:30,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 03:22:30,561 INFO L82 PathProgramCache]: Analyzing trace with hash 2079240233, now seen corresponding path program 3 times [2021-08-13 03:22:30,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 03:22:30,561 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66839698] [2021-08-13 03:22:30,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 03:22:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 03:22:30,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:30,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 03:22:30,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:30,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 03:22:30,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:30,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 03:22:30,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:30,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 03:22:30,617 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 03:22:30,618 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 03:22:30,618 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66839698] [2021-08-13 03:22:30,618 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66839698] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 03:22:30,618 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 03:22:30,618 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-13 03:22:30,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919829707] [2021-08-13 03:22:30,618 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-13 03:22:30,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 03:22:30,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-13 03:22:30,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-13 03:22:30,619 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 30 [2021-08-13 03:22:30,620 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 67 transitions, 316 flow. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:30,620 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 03:22:30,620 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 30 [2021-08-13 03:22:30,620 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 03:22:30,734 INFO L129 PetriNetUnfolder]: 275/701 cut-off events. [2021-08-13 03:22:30,734 INFO L130 PetriNetUnfolder]: For 355/403 co-relation queries the response was YES. [2021-08-13 03:22:30,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1879 conditions, 701 events. 275/701 cut-off events. For 355/403 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4603 event pairs, 67 based on Foata normal form. 36/720 useless extension candidates. Maximal degree in co-relation 1852. Up to 302 conditions per place. [2021-08-13 03:22:30,738 INFO L132 encePairwiseOnDemand]: 22/30 looper letters, 52 selfloop transitions, 18 changer transitions 1/91 dead transitions. [2021-08-13 03:22:30,738 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 91 transitions, 570 flow [2021-08-13 03:22:30,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 03:22:30,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 03:22:30,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2021-08-13 03:22:30,740 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8266666666666667 [2021-08-13 03:22:30,740 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 124 transitions. [2021-08-13 03:22:30,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 124 transitions. [2021-08-13 03:22:30,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 03:22:30,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 124 transitions. [2021-08-13 03:22:30,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:30,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:30,741 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:30,741 INFO L348 CegarLoopForPetriNet]: 35 programPoint places, 13 predicate places. [2021-08-13 03:22:30,742 INFO L482 AbstractCegarLoop]: Abstraction has has 48 places, 91 transitions, 570 flow [2021-08-13 03:22:30,742 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:30,742 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 03:22:30,742 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 03:22:30,742 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 03:22:30,742 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 03:22:30,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 03:22:30,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1873490551, now seen corresponding path program 4 times [2021-08-13 03:22:30,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 03:22:30,743 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99892054] [2021-08-13 03:22:30,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 03:22:30,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 03:22:30,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:30,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 03:22:30,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:30,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 03:22:30,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:30,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 03:22:30,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:30,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 03:22:30,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:30,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 03:22:30,812 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 03:22:30,812 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 03:22:30,813 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99892054] [2021-08-13 03:22:30,813 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99892054] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 03:22:30,813 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 03:22:30,813 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 03:22:30,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429606677] [2021-08-13 03:22:30,813 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 03:22:30,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 03:22:30,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 03:22:30,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-13 03:22:30,814 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 30 [2021-08-13 03:22:30,814 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 91 transitions, 570 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:30,814 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 03:22:30,814 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 30 [2021-08-13 03:22:30,814 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 03:22:30,983 INFO L129 PetriNetUnfolder]: 284/735 cut-off events. [2021-08-13 03:22:30,983 INFO L130 PetriNetUnfolder]: For 781/885 co-relation queries the response was YES. [2021-08-13 03:22:30,985 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2390 conditions, 735 events. 284/735 cut-off events. For 781/885 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4909 event pairs, 75 based on Foata normal form. 67/784 useless extension candidates. Maximal degree in co-relation 2361. Up to 312 conditions per place. [2021-08-13 03:22:30,987 INFO L132 encePairwiseOnDemand]: 22/30 looper letters, 36 selfloop transitions, 35 changer transitions 6/97 dead transitions. [2021-08-13 03:22:30,987 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 97 transitions, 760 flow [2021-08-13 03:22:31,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 03:22:31,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 03:22:31,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2021-08-13 03:22:31,001 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2021-08-13 03:22:31,001 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 150 transitions. [2021-08-13 03:22:31,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 150 transitions. [2021-08-13 03:22:31,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 03:22:31,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 150 transitions. [2021-08-13 03:22:31,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:31,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 30.0) internal successors, (210), 7 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:31,003 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 30.0) internal successors, (210), 7 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:31,003 INFO L348 CegarLoopForPetriNet]: 35 programPoint places, 18 predicate places. [2021-08-13 03:22:31,003 INFO L482 AbstractCegarLoop]: Abstraction has has 53 places, 97 transitions, 760 flow [2021-08-13 03:22:31,003 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:31,003 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 03:22:31,004 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 03:22:31,004 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 03:22:31,004 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 03:22:31,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 03:22:31,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1603892967, now seen corresponding path program 5 times [2021-08-13 03:22:31,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 03:22:31,004 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255423183] [2021-08-13 03:22:31,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 03:22:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 03:22:31,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:31,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 03:22:31,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:31,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 03:22:31,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:31,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 03:22:31,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:31,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 03:22:31,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 03:22:31,047 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 03:22:31,047 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255423183] [2021-08-13 03:22:31,047 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255423183] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 03:22:31,047 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 03:22:31,047 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-13 03:22:31,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067114523] [2021-08-13 03:22:31,047 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-08-13 03:22:31,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 03:22:31,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-13 03:22:31,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-13 03:22:31,048 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 30 [2021-08-13 03:22:31,048 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 97 transitions, 760 flow. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:31,048 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 03:22:31,048 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 30 [2021-08-13 03:22:31,049 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 03:22:31,144 INFO L129 PetriNetUnfolder]: 244/658 cut-off events. [2021-08-13 03:22:31,145 INFO L130 PetriNetUnfolder]: For 1272/1352 co-relation queries the response was YES. [2021-08-13 03:22:31,146 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2555 conditions, 658 events. 244/658 cut-off events. For 1272/1352 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4324 event pairs, 61 based on Foata normal form. 47/691 useless extension candidates. Maximal degree in co-relation 2524. Up to 287 conditions per place. [2021-08-13 03:22:31,148 INFO L132 encePairwiseOnDemand]: 22/30 looper letters, 52 selfloop transitions, 20 changer transitions 13/105 dead transitions. [2021-08-13 03:22:31,148 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 105 transitions, 998 flow [2021-08-13 03:22:31,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-13 03:22:31,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-08-13 03:22:31,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 124 transitions. [2021-08-13 03:22:31,149 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8266666666666667 [2021-08-13 03:22:31,149 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 124 transitions. [2021-08-13 03:22:31,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 124 transitions. [2021-08-13 03:22:31,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 03:22:31,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 124 transitions. [2021-08-13 03:22:31,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:31,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:31,151 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:31,151 INFO L348 CegarLoopForPetriNet]: 35 programPoint places, 22 predicate places. [2021-08-13 03:22:31,151 INFO L482 AbstractCegarLoop]: Abstraction has has 57 places, 105 transitions, 998 flow [2021-08-13 03:22:31,151 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:31,151 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 03:22:31,152 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 03:22:31,152 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 03:22:31,152 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 03:22:31,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 03:22:31,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1121355797, now seen corresponding path program 6 times [2021-08-13 03:22:31,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 03:22:31,153 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132804814] [2021-08-13 03:22:31,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 03:22:31,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 03:22:31,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:31,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 03:22:31,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:31,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 03:22:31,187 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:31,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 03:22:31,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:31,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 03:22:31,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:31,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 03:22:31,197 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 03:22:31,197 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 03:22:31,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132804814] [2021-08-13 03:22:31,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132804814] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 03:22:31,197 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 03:22:31,197 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 03:22:31,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294661197] [2021-08-13 03:22:31,198 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 03:22:31,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 03:22:31,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 03:22:31,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-13 03:22:31,198 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 30 [2021-08-13 03:22:31,199 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 105 transitions, 998 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:31,199 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 03:22:31,199 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 30 [2021-08-13 03:22:31,199 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 03:22:31,312 INFO L129 PetriNetUnfolder]: 227/616 cut-off events. [2021-08-13 03:22:31,313 INFO L130 PetriNetUnfolder]: For 1895/1989 co-relation queries the response was YES. [2021-08-13 03:22:31,314 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2769 conditions, 616 events. 227/616 cut-off events. For 1895/1989 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3994 event pairs, 61 based on Foata normal form. 29/631 useless extension candidates. Maximal degree in co-relation 2736. Up to 270 conditions per place. [2021-08-13 03:22:31,316 INFO L132 encePairwiseOnDemand]: 22/30 looper letters, 38 selfloop transitions, 34 changer transitions 17/109 dead transitions. [2021-08-13 03:22:31,316 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 109 transitions, 1216 flow [2021-08-13 03:22:31,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 03:22:31,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 03:22:31,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2021-08-13 03:22:31,317 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2021-08-13 03:22:31,318 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 150 transitions. [2021-08-13 03:22:31,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 150 transitions. [2021-08-13 03:22:31,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 03:22:31,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 150 transitions. [2021-08-13 03:22:31,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:31,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 30.0) internal successors, (210), 7 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:31,319 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 30.0) internal successors, (210), 7 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:31,319 INFO L348 CegarLoopForPetriNet]: 35 programPoint places, 27 predicate places. [2021-08-13 03:22:31,319 INFO L482 AbstractCegarLoop]: Abstraction has has 62 places, 109 transitions, 1216 flow [2021-08-13 03:22:31,319 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:31,319 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 03:22:31,320 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 03:22:31,320 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 03:22:31,320 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 03:22:31,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 03:22:31,320 INFO L82 PathProgramCache]: Analyzing trace with hash 175495729, now seen corresponding path program 7 times [2021-08-13 03:22:31,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 03:22:31,321 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661141753] [2021-08-13 03:22:31,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 03:22:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 03:22:31,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:31,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 03:22:31,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:31,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 03:22:31,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:31,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 03:22:31,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:31,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 03:22:31,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:31,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 03:22:31,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:31,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 03:22:31,374 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 03:22:31,374 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 03:22:31,374 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661141753] [2021-08-13 03:22:31,374 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661141753] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 03:22:31,374 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 03:22:31,374 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 03:22:31,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544648124] [2021-08-13 03:22:31,374 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 03:22:31,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 03:22:31,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 03:22:31,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-13 03:22:31,377 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 30 [2021-08-13 03:22:31,378 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 109 transitions, 1216 flow. Second operand has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:31,378 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 03:22:31,378 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 30 [2021-08-13 03:22:31,379 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 03:22:31,508 INFO L129 PetriNetUnfolder]: 149/445 cut-off events. [2021-08-13 03:22:31,508 INFO L130 PetriNetUnfolder]: For 2029/2097 co-relation queries the response was YES. [2021-08-13 03:22:31,509 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2311 conditions, 445 events. 149/445 cut-off events. For 2029/2097 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2677 event pairs, 49 based on Foata normal form. 26/464 useless extension candidates. Maximal degree in co-relation 2276. Up to 212 conditions per place. [2021-08-13 03:22:31,510 INFO L132 encePairwiseOnDemand]: 22/30 looper letters, 25 selfloop transitions, 20 changer transitions 39/101 dead transitions. [2021-08-13 03:22:31,510 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 101 transitions, 1286 flow [2021-08-13 03:22:31,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 03:22:31,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 03:22:31,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2021-08-13 03:22:31,512 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8291666666666667 [2021-08-13 03:22:31,512 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 199 transitions. [2021-08-13 03:22:31,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 199 transitions. [2021-08-13 03:22:31,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 03:22:31,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 199 transitions. [2021-08-13 03:22:31,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:31,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 30.0) internal successors, (270), 9 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:31,513 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 30.0) internal successors, (270), 9 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:31,513 INFO L348 CegarLoopForPetriNet]: 35 programPoint places, 34 predicate places. [2021-08-13 03:22:31,513 INFO L482 AbstractCegarLoop]: Abstraction has has 69 places, 101 transitions, 1286 flow [2021-08-13 03:22:31,514 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:31,514 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 03:22:31,514 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 03:22:31,514 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 03:22:31,514 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 03:22:31,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 03:22:31,514 INFO L82 PathProgramCache]: Analyzing trace with hash -140295209, now seen corresponding path program 8 times [2021-08-13 03:22:31,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 03:22:31,514 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089981929] [2021-08-13 03:22:31,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 03:22:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 03:22:31,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:31,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 03:22:31,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:31,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 03:22:31,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:31,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 03:22:31,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:31,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 03:22:31,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:31,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 03:22:31,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:31,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 03:22:31,561 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 03:22:31,561 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 03:22:31,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089981929] [2021-08-13 03:22:31,561 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089981929] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 03:22:31,561 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 03:22:31,561 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 03:22:31,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611435177] [2021-08-13 03:22:31,562 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 03:22:31,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 03:22:31,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 03:22:31,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-13 03:22:31,563 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 30 [2021-08-13 03:22:31,563 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 101 transitions, 1286 flow. Second operand has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:31,564 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 03:22:31,564 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 30 [2021-08-13 03:22:31,564 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 03:22:31,682 INFO L129 PetriNetUnfolder]: 134/411 cut-off events. [2021-08-13 03:22:31,682 INFO L130 PetriNetUnfolder]: For 2602/2703 co-relation queries the response was YES. [2021-08-13 03:22:31,683 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2420 conditions, 411 events. 134/411 cut-off events. For 2602/2703 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2477 event pairs, 46 based on Foata normal form. 16/419 useless extension candidates. Maximal degree in co-relation 2383. Up to 196 conditions per place. [2021-08-13 03:22:31,684 INFO L132 encePairwiseOnDemand]: 22/30 looper letters, 20 selfloop transitions, 14 changer transitions 58/109 dead transitions. [2021-08-13 03:22:31,684 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 109 transitions, 1580 flow [2021-08-13 03:22:31,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 03:22:31,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 03:22:31,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2021-08-13 03:22:31,685 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8291666666666667 [2021-08-13 03:22:31,686 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 199 transitions. [2021-08-13 03:22:31,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 199 transitions. [2021-08-13 03:22:31,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 03:22:31,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 199 transitions. [2021-08-13 03:22:31,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:31,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 30.0) internal successors, (270), 9 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:31,687 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 30.0) internal successors, (270), 9 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:31,687 INFO L348 CegarLoopForPetriNet]: 35 programPoint places, 41 predicate places. [2021-08-13 03:22:31,687 INFO L482 AbstractCegarLoop]: Abstraction has has 76 places, 109 transitions, 1580 flow [2021-08-13 03:22:31,687 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:31,687 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 03:22:31,687 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 03:22:31,687 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-13 03:22:31,688 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 03:22:31,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 03:22:31,688 INFO L82 PathProgramCache]: Analyzing trace with hash 949219561, now seen corresponding path program 9 times [2021-08-13 03:22:31,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 03:22:31,688 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923801141] [2021-08-13 03:22:31,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 03:22:31,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 03:22:31,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:31,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 03:22:31,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:31,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 03:22:31,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:31,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 03:22:31,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:31,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 03:22:31,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:31,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 03:22:31,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:31,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 03:22:31,710 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 03:22:31,710 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 03:22:31,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923801141] [2021-08-13 03:22:31,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923801141] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 03:22:31,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 03:22:31,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 03:22:31,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874398370] [2021-08-13 03:22:31,711 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 03:22:31,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 03:22:31,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 03:22:31,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-13 03:22:31,712 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 30 [2021-08-13 03:22:31,712 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 109 transitions, 1580 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:31,712 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 03:22:31,712 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 30 [2021-08-13 03:22:31,712 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 03:22:31,797 INFO L129 PetriNetUnfolder]: 132/461 cut-off events. [2021-08-13 03:22:31,797 INFO L130 PetriNetUnfolder]: For 3498/3605 co-relation queries the response was YES. [2021-08-13 03:22:31,798 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2920 conditions, 461 events. 132/461 cut-off events. For 3498/3605 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3050 event pairs, 39 based on Foata normal form. 14/469 useless extension candidates. Maximal degree in co-relation 2879. Up to 218 conditions per place. [2021-08-13 03:22:31,799 INFO L132 encePairwiseOnDemand]: 22/30 looper letters, 18 selfloop transitions, 21 changer transitions 75/131 dead transitions. [2021-08-13 03:22:31,799 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 131 transitions, 2170 flow [2021-08-13 03:22:31,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 03:22:31,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 03:22:31,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2021-08-13 03:22:31,800 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8444444444444444 [2021-08-13 03:22:31,800 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 152 transitions. [2021-08-13 03:22:31,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 152 transitions. [2021-08-13 03:22:31,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 03:22:31,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 152 transitions. [2021-08-13 03:22:31,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:31,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 30.0) internal successors, (210), 7 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:31,801 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 30.0) internal successors, (210), 7 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:31,801 INFO L348 CegarLoopForPetriNet]: 35 programPoint places, 46 predicate places. [2021-08-13 03:22:31,801 INFO L482 AbstractCegarLoop]: Abstraction has has 81 places, 131 transitions, 2170 flow [2021-08-13 03:22:31,801 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:31,801 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 03:22:31,801 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 03:22:31,801 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-13 03:22:31,801 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 03:22:31,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 03:22:31,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1371753371, now seen corresponding path program 10 times [2021-08-13 03:22:31,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 03:22:31,802 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371788544] [2021-08-13 03:22:31,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 03:22:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 03:22:31,810 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:31,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 03:22:31,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:31,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 03:22:31,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:31,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 03:22:31,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:31,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 03:22:31,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:31,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 03:22:31,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:31,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 03:22:31,835 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 03:22:31,835 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 03:22:31,835 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371788544] [2021-08-13 03:22:31,835 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371788544] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 03:22:31,835 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 03:22:31,835 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 03:22:31,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423918557] [2021-08-13 03:22:31,835 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 03:22:31,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 03:22:31,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 03:22:31,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-13 03:22:31,836 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 30 [2021-08-13 03:22:31,836 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 131 transitions, 2170 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:31,836 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 03:22:31,836 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 30 [2021-08-13 03:22:31,837 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 03:22:31,923 INFO L129 PetriNetUnfolder]: 124/446 cut-off events. [2021-08-13 03:22:31,923 INFO L130 PetriNetUnfolder]: For 4091/4139 co-relation queries the response was YES. [2021-08-13 03:22:31,924 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3112 conditions, 446 events. 124/446 cut-off events. For 4091/4139 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2909 event pairs, 37 based on Foata normal form. 16/460 useless extension candidates. Maximal degree in co-relation 3069. Up to 211 conditions per place. [2021-08-13 03:22:31,925 INFO L132 encePairwiseOnDemand]: 22/30 looper letters, 15 selfloop transitions, 16 changer transitions 87/134 dead transitions. [2021-08-13 03:22:31,925 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 134 transitions, 2472 flow [2021-08-13 03:22:31,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 03:22:31,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 03:22:31,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2021-08-13 03:22:31,926 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8444444444444444 [2021-08-13 03:22:31,926 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 152 transitions. [2021-08-13 03:22:31,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 152 transitions. [2021-08-13 03:22:31,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 03:22:31,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 152 transitions. [2021-08-13 03:22:31,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:31,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 30.0) internal successors, (210), 7 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:31,927 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 30.0) internal successors, (210), 7 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:31,927 INFO L348 CegarLoopForPetriNet]: 35 programPoint places, 51 predicate places. [2021-08-13 03:22:31,927 INFO L482 AbstractCegarLoop]: Abstraction has has 86 places, 134 transitions, 2472 flow [2021-08-13 03:22:31,927 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:31,927 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 03:22:31,927 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 03:22:31,928 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-13 03:22:31,928 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 03:22:31,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 03:22:31,928 INFO L82 PathProgramCache]: Analyzing trace with hash 490266925, now seen corresponding path program 11 times [2021-08-13 03:22:31,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 03:22:31,928 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229273264] [2021-08-13 03:22:31,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 03:22:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 03:22:31,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:31,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 03:22:31,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:31,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 03:22:31,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:31,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 03:22:31,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:31,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 03:22:31,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:31,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 03:22:31,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:31,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 03:22:31,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 03:22:31,977 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 03:22:31,977 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229273264] [2021-08-13 03:22:31,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229273264] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 03:22:31,977 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 03:22:31,977 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 03:22:31,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876168334] [2021-08-13 03:22:31,977 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 03:22:31,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 03:22:31,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 03:22:31,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-13 03:22:31,978 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 30 [2021-08-13 03:22:31,978 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 134 transitions, 2472 flow. Second operand has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:31,978 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 03:22:31,978 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 30 [2021-08-13 03:22:31,978 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 03:22:32,095 INFO L129 PetriNetUnfolder]: 97/373 cut-off events. [2021-08-13 03:22:32,095 INFO L130 PetriNetUnfolder]: For 4346/4427 co-relation queries the response was YES. [2021-08-13 03:22:32,096 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2893 conditions, 373 events. 97/373 cut-off events. For 4346/4427 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2378 event pairs, 31 based on Foata normal form. 14/385 useless extension candidates. Maximal degree in co-relation 2848. Up to 172 conditions per place. [2021-08-13 03:22:32,097 INFO L132 encePairwiseOnDemand]: 22/30 looper letters, 10 selfloop transitions, 3 changer transitions 107/136 dead transitions. [2021-08-13 03:22:32,097 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 136 transitions, 2750 flow [2021-08-13 03:22:32,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 03:22:32,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 03:22:32,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2021-08-13 03:22:32,098 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8291666666666667 [2021-08-13 03:22:32,098 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 199 transitions. [2021-08-13 03:22:32,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 199 transitions. [2021-08-13 03:22:32,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 03:22:32,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 199 transitions. [2021-08-13 03:22:32,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:32,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 30.0) internal successors, (270), 9 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:32,099 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 30.0) internal successors, (270), 9 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:32,099 INFO L348 CegarLoopForPetriNet]: 35 programPoint places, 58 predicate places. [2021-08-13 03:22:32,099 INFO L482 AbstractCegarLoop]: Abstraction has has 93 places, 136 transitions, 2750 flow [2021-08-13 03:22:32,100 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:32,100 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 03:22:32,100 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 03:22:32,100 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-13 03:22:32,100 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 03:22:32,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 03:22:32,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1418480251, now seen corresponding path program 12 times [2021-08-13 03:22:32,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 03:22:32,100 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897663758] [2021-08-13 03:22:32,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 03:22:32,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 03:22:32,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:32,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 03:22:32,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:32,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 03:22:32,115 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:32,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 03:22:32,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:32,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 03:22:32,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:32,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-08-13 03:22:32,126 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 03:22:32,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 03:22:32,126 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 03:22:32,127 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 03:22:32,127 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897663758] [2021-08-13 03:22:32,127 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897663758] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 03:22:32,127 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 03:22:32,127 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-13 03:22:32,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978071786] [2021-08-13 03:22:32,127 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 03:22:32,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 03:22:32,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 03:22:32,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-13 03:22:32,128 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 30 [2021-08-13 03:22:32,128 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 136 transitions, 2750 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:32,128 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 03:22:32,128 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 30 [2021-08-13 03:22:32,128 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 03:22:32,206 INFO L129 PetriNetUnfolder]: 84/333 cut-off events. [2021-08-13 03:22:32,207 INFO L130 PetriNetUnfolder]: For 4744/4770 co-relation queries the response was YES. [2021-08-13 03:22:32,207 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2849 conditions, 333 events. 84/333 cut-off events. For 4744/4770 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2131 event pairs, 25 based on Foata normal form. 10/342 useless extension candidates. Maximal degree in co-relation 2807. Up to 152 conditions per place. [2021-08-13 03:22:32,208 INFO L132 encePairwiseOnDemand]: 22/30 looper letters, 0 selfloop transitions, 0 changer transitions 136/136 dead transitions. [2021-08-13 03:22:32,208 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 136 transitions, 3070 flow [2021-08-13 03:22:32,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-13 03:22:32,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-08-13 03:22:32,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2021-08-13 03:22:32,209 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8444444444444444 [2021-08-13 03:22:32,209 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 152 transitions. [2021-08-13 03:22:32,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 152 transitions. [2021-08-13 03:22:32,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 03:22:32,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 152 transitions. [2021-08-13 03:22:32,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:32,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 30.0) internal successors, (210), 7 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:32,211 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 30.0) internal successors, (210), 7 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:32,211 INFO L348 CegarLoopForPetriNet]: 35 programPoint places, 61 predicate places. [2021-08-13 03:22:32,211 INFO L482 AbstractCegarLoop]: Abstraction has has 96 places, 136 transitions, 3070 flow [2021-08-13 03:22:32,211 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 03:22:32,211 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown