/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/file-item-subst.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 09:16:02,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 09:16:02,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 09:16:02,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-13 09:16:02,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-13 09:16:02,517 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-13 09:16:02,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-13 09:16:02,525 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-13 09:16:02,527 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-13 09:16:02,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-13 09:16:02,532 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-13 09:16:02,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-13 09:16:02,534 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 09:16:02,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 09:16:02,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 09:16:02,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 09:16:02,542 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 09:16:02,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 09:16:02,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 09:16:02,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 09:16:02,553 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 09:16:02,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 09:16:02,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 09:16:02,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 09:16:02,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-13 09:16:02,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-13 09:16:02,567 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-13 09:16:02,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-13 09:16:02,569 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-13 09:16:02,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-13 09:16:02,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-13 09:16:02,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-13 09:16:02,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-13 09:16:02,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 09:16:02,580 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 09:16:02,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 09:16:02,582 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-06-13 09:16:02,619 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 09:16:02,619 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 09:16:02,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 09:16:02,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 09:16:02,622 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 09:16:02,622 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 09:16:02,623 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 09:16:02,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 09:16:02,623 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 09:16:02,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 09:16:02,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 09:16:02,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 09:16:02,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 09:16:02,624 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 09:16:02,624 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 09:16:02,625 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 09:16:02,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 09:16:02,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 09:16:02,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 09:16:02,625 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 09:16:02,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 09:16:02,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 09:16:02,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 09:16:02,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 09:16:02,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 09:16:02,626 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 09:16:02,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 09:16:02,626 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 09:16:02,627 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 09:16:02,627 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 09:16:02,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 09:16:02,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 09:16:02,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 09:16:02,953 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-13 09:16:02,954 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-13 09:16:02,955 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/file-item-subst.wvr.bpl [2021-06-13 09:16:02,955 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/file-item-subst.wvr.bpl' [2021-06-13 09:16:02,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 09:16:02,998 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-13 09:16:02,999 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 09:16:02,999 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 09:16:02,999 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 09:16:03,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:16:02" (1/1) ... [2021-06-13 09:16:03,018 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:16:02" (1/1) ... [2021-06-13 09:16:03,023 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 09:16:03,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 09:16:03,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 09:16:03,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 09:16:03,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:16:02" (1/1) ... [2021-06-13 09:16:03,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:16:02" (1/1) ... [2021-06-13 09:16:03,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:16:02" (1/1) ... [2021-06-13 09:16:03,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:16:02" (1/1) ... [2021-06-13 09:16:03,043 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:16:02" (1/1) ... [2021-06-13 09:16:03,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:16:02" (1/1) ... [2021-06-13 09:16:03,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:16:02" (1/1) ... [2021-06-13 09:16:03,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 09:16:03,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 09:16:03,051 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 09:16:03,051 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 09:16:03,052 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:16:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 09:16:03,118 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-13 09:16:03,118 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-13 09:16:03,118 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-13 09:16:03,119 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-13 09:16:03,119 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-13 09:16:03,119 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-13 09:16:03,119 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-13 09:16:03,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 09:16:03,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 09:16:03,119 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-13 09:16:03,120 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-13 09:16:03,120 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-13 09:16:03,121 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 09:16:03,260 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 09:16:03,260 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-13 09:16:03,261 INFO L202 PluginConnector]: Adding new model file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 09:16:03 BoogieIcfgContainer [2021-06-13 09:16:03,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 09:16:03,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 09:16:03,263 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 09:16:03,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 09:16:03,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.06 09:16:02" (1/2) ... [2021-06-13 09:16:03,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c93f295 and model type file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 09:16:03, skipping insertion in model container [2021-06-13 09:16:03,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 09:16:03" (2/2) ... [2021-06-13 09:16:03,268 INFO L111 eAbstractionObserver]: Analyzing ICFG file-item-subst.wvr.bpl [2021-06-13 09:16:03,273 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 09:16:03,273 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 09:16:03,273 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 09:16:03,303 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-13 09:16:03,322 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-13 09:16:03,340 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 09:16:03,341 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 09:16:03,341 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 09:16:03,341 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 09:16:03,341 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 09:16:03,341 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 09:16:03,341 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 09:16:03,341 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 09:16:03,349 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 19 transitions, 62 flow [2021-06-13 09:16:03,367 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-06-13 09:16:03,367 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-06-13 09:16:03,369 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 16 events. 0/16 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 13 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-06-13 09:16:03,369 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 19 transitions, 62 flow [2021-06-13 09:16:03,372 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 14 transitions, 46 flow [2021-06-13 09:16:03,398 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2021-06-13 09:16:03,398 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-06-13 09:16:03,398 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:16:03,399 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:16:03,399 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 09:16:03,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:16:03,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1083414778, now seen corresponding path program 1 times [2021-06-13 09:16:03,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:16:03,427 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317130486] [2021-06-13 09:16:03,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:16:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:16:03,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:16:03,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:16:03,869 INFO L142 QuantifierPusher]: treesize reduction 142, result has 34.9 percent of original size [2021-06-13 09:16:03,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-06-13 09:16:04,031 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2021-06-13 09:16:04,067 INFO L142 QuantifierPusher]: treesize reduction 112, result has 45.6 percent of original size [2021-06-13 09:16:04,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-06-13 09:16:04,245 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2021-06-13 09:16:04,274 INFO L142 QuantifierPusher]: treesize reduction 207, result has 26.9 percent of original size [2021-06-13 09:16:04,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-06-13 09:16:04,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:16:04,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:16:04,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:16:04,324 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:16:04,325 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317130486] [2021-06-13 09:16:04,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317130486] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:16:04,325 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:16:04,326 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-13 09:16:04,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359594264] [2021-06-13 09:16:04,334 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-13 09:16:04,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:16:04,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-13 09:16:04,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-13 09:16:04,354 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 19 [2021-06-13 09:16:04,356 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 14 transitions, 46 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:16:04,357 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:16:04,357 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 19 [2021-06-13 09:16:04,358 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:16:04,617 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-06-13 09:16:04,636 INFO L129 PetriNetUnfolder]: 3/40 cut-off events. [2021-06-13 09:16:04,637 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-06-13 09:16:04,639 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 40 events. 3/40 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 119 event pairs, 1 based on Foata normal form. 1/39 useless extension candidates. Maximal degree in co-relation 50. Up to 7 conditions per place. [2021-06-13 09:16:04,640 INFO L132 encePairwiseOnDemand]: 15/19 looper letters, 5 selfloop transitions, 2 changer transitions 1/18 dead transitions. [2021-06-13 09:16:04,640 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 18 transitions, 70 flow [2021-06-13 09:16:04,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 09:16:04,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 09:16:04,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2021-06-13 09:16:04,651 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8315789473684211 [2021-06-13 09:16:04,652 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 79 transitions. [2021-06-13 09:16:04,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 79 transitions. [2021-06-13 09:16:04,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:16:04,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 79 transitions. [2021-06-13 09:16:04,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:16:04,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:16:04,665 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:16:04,667 INFO L185 Difference]: Start difference. First operand has 24 places, 14 transitions, 46 flow. Second operand 5 states and 79 transitions. [2021-06-13 09:16:04,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 18 transitions, 70 flow [2021-06-13 09:16:04,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 18 transitions, 58 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-06-13 09:16:04,675 INFO L241 Difference]: Finished difference. Result has 25 places, 15 transitions, 49 flow [2021-06-13 09:16:04,677 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=49, PETRI_PLACES=25, PETRI_TRANSITIONS=15} [2021-06-13 09:16:04,677 INFO L335 CegarLoopForPetriNet]: 24 programPoint places, 1 predicate places. [2021-06-13 09:16:04,678 INFO L482 AbstractCegarLoop]: Abstraction has has 25 places, 15 transitions, 49 flow [2021-06-13 09:16:04,678 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:16:04,678 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:16:04,678 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:16:04,678 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 09:16:04,678 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 09:16:04,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:16:04,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1676293040, now seen corresponding path program 2 times [2021-06-13 09:16:04,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:16:04,681 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455114045] [2021-06-13 09:16:04,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:16:04,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:16:04,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:16:04,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:16:04,877 INFO L142 QuantifierPusher]: treesize reduction 278, result has 23.2 percent of original size [2021-06-13 09:16:04,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-06-13 09:16:04,998 INFO L142 QuantifierPusher]: treesize reduction 421, result has 24.3 percent of original size [2021-06-13 09:16:05,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 135 [2021-06-13 09:16:05,141 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2021-06-13 09:16:05,151 INFO L142 QuantifierPusher]: treesize reduction 280, result has 19.3 percent of original size [2021-06-13 09:16:05,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-06-13 09:16:05,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:16:05,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:16:05,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:16:05,193 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:16:05,193 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455114045] [2021-06-13 09:16:05,193 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455114045] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:16:05,193 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:16:05,193 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-13 09:16:05,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938015523] [2021-06-13 09:16:05,195 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-13 09:16:05,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:16:05,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-13 09:16:05,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-13 09:16:05,196 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 19 [2021-06-13 09:16:05,197 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 15 transitions, 49 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:16:05,197 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:16:05,197 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 19 [2021-06-13 09:16:05,197 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:16:05,318 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-06-13 09:16:05,443 INFO L129 PetriNetUnfolder]: 2/42 cut-off events. [2021-06-13 09:16:05,443 INFO L130 PetriNetUnfolder]: For 24/26 co-relation queries the response was YES. [2021-06-13 09:16:05,444 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 42 events. 2/42 cut-off events. For 24/26 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 150 event pairs, 0 based on Foata normal form. 1/42 useless extension candidates. Maximal degree in co-relation 69. Up to 7 conditions per place. [2021-06-13 09:16:05,444 INFO L132 encePairwiseOnDemand]: 15/19 looper letters, 5 selfloop transitions, 2 changer transitions 3/20 dead transitions. [2021-06-13 09:16:05,444 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 20 transitions, 93 flow [2021-06-13 09:16:05,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 09:16:05,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 09:16:05,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2021-06-13 09:16:05,481 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8315789473684211 [2021-06-13 09:16:05,481 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 79 transitions. [2021-06-13 09:16:05,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 79 transitions. [2021-06-13 09:16:05,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:16:05,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 79 transitions. [2021-06-13 09:16:05,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:16:05,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:16:05,485 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:16:05,485 INFO L185 Difference]: Start difference. First operand has 25 places, 15 transitions, 49 flow. Second operand 5 states and 79 transitions. [2021-06-13 09:16:05,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 20 transitions, 93 flow [2021-06-13 09:16:05,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 20 transitions, 86 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-06-13 09:16:05,487 INFO L241 Difference]: Finished difference. Result has 29 places, 15 transitions, 59 flow [2021-06-13 09:16:05,487 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=59, PETRI_PLACES=29, PETRI_TRANSITIONS=15} [2021-06-13 09:16:05,488 INFO L335 CegarLoopForPetriNet]: 24 programPoint places, 5 predicate places. [2021-06-13 09:16:05,488 INFO L482 AbstractCegarLoop]: Abstraction has has 29 places, 15 transitions, 59 flow [2021-06-13 09:16:05,488 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:16:05,488 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:16:05,488 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:16:05,489 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 09:16:05,489 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 09:16:05,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:16:05,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1282884404, now seen corresponding path program 3 times [2021-06-13 09:16:05,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:16:05,490 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78328162] [2021-06-13 09:16:05,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:16:05,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:16:05,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:16:05,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:16:05,548 INFO L142 QuantifierPusher]: treesize reduction 104, result has 37.0 percent of original size [2021-06-13 09:16:05,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-06-13 09:16:05,649 INFO L142 QuantifierPusher]: treesize reduction 121, result has 48.5 percent of original size [2021-06-13 09:16:05,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-06-13 09:16:05,783 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2021-06-13 09:16:05,801 INFO L142 QuantifierPusher]: treesize reduction 158, result has 41.9 percent of original size [2021-06-13 09:16:05,811 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-06-13 09:16:05,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:16:05,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:16:05,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:16:05,862 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:16:05,862 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78328162] [2021-06-13 09:16:05,863 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78328162] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:16:05,863 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:16:05,863 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-13 09:16:05,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438809793] [2021-06-13 09:16:05,863 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-13 09:16:05,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:16:05,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-13 09:16:05,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-13 09:16:05,865 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 19 [2021-06-13 09:16:05,865 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 15 transitions, 59 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:16:05,865 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:16:05,865 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 19 [2021-06-13 09:16:05,865 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:16:06,076 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-06-13 09:16:06,090 INFO L129 PetriNetUnfolder]: 1/34 cut-off events. [2021-06-13 09:16:06,090 INFO L130 PetriNetUnfolder]: For 42/44 co-relation queries the response was YES. [2021-06-13 09:16:06,090 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 34 events. 1/34 cut-off events. For 42/44 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 100 event pairs, 1 based on Foata normal form. 1/35 useless extension candidates. Maximal degree in co-relation 65. Up to 5 conditions per place. [2021-06-13 09:16:06,090 INFO L132 encePairwiseOnDemand]: 15/19 looper letters, 5 selfloop transitions, 3 changer transitions 1/19 dead transitions. [2021-06-13 09:16:06,090 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 19 transitions, 101 flow [2021-06-13 09:16:06,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 09:16:06,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 09:16:06,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2021-06-13 09:16:06,095 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8315789473684211 [2021-06-13 09:16:06,095 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 79 transitions. [2021-06-13 09:16:06,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 79 transitions. [2021-06-13 09:16:06,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:16:06,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 79 transitions. [2021-06-13 09:16:06,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:16:06,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:16:06,097 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:16:06,097 INFO L185 Difference]: Start difference. First operand has 29 places, 15 transitions, 59 flow. Second operand 5 states and 79 transitions. [2021-06-13 09:16:06,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 19 transitions, 101 flow [2021-06-13 09:16:06,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 19 transitions, 82 flow, removed 7 selfloop flow, removed 4 redundant places. [2021-06-13 09:16:06,099 INFO L241 Difference]: Finished difference. Result has 31 places, 16 transitions, 70 flow [2021-06-13 09:16:06,099 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=70, PETRI_PLACES=31, PETRI_TRANSITIONS=16} [2021-06-13 09:16:06,100 INFO L335 CegarLoopForPetriNet]: 24 programPoint places, 7 predicate places. [2021-06-13 09:16:06,100 INFO L482 AbstractCegarLoop]: Abstraction has has 31 places, 16 transitions, 70 flow [2021-06-13 09:16:06,100 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:16:06,100 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:16:06,100 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:16:06,100 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-13 09:16:06,100 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 09:16:06,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:16:06,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1138682438, now seen corresponding path program 4 times [2021-06-13 09:16:06,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:16:06,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430320778] [2021-06-13 09:16:06,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:16:06,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:16:06,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:16:06,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:16:06,171 INFO L142 QuantifierPusher]: treesize reduction 348, result has 23.0 percent of original size [2021-06-13 09:16:06,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-06-13 09:16:06,305 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 29 [2021-06-13 09:16:06,329 INFO L142 QuantifierPusher]: treesize reduction 122, result has 67.2 percent of original size [2021-06-13 09:16:06,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 250 [2021-06-13 09:16:06,623 WARN L205 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 44 [2021-06-13 09:16:06,632 INFO L142 QuantifierPusher]: treesize reduction 222, result has 24.2 percent of original size [2021-06-13 09:16:06,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-06-13 09:16:06,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:16:06,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:16:06,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:16:06,684 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:16:06,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430320778] [2021-06-13 09:16:06,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430320778] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:16:06,685 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:16:06,685 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-13 09:16:06,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690982631] [2021-06-13 09:16:06,685 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-13 09:16:06,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:16:06,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-13 09:16:06,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-13 09:16:06,687 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 19 [2021-06-13 09:16:06,687 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 16 transitions, 70 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:16:06,687 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:16:06,687 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 19 [2021-06-13 09:16:06,687 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:16:06,914 INFO L129 PetriNetUnfolder]: 1/28 cut-off events. [2021-06-13 09:16:06,915 INFO L130 PetriNetUnfolder]: For 41/46 co-relation queries the response was YES. [2021-06-13 09:16:06,915 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 28 events. 1/28 cut-off events. For 41/46 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 69 event pairs, 1 based on Foata normal form. 3/31 useless extension candidates. Maximal degree in co-relation 62. Up to 5 conditions per place. [2021-06-13 09:16:06,915 INFO L132 encePairwiseOnDemand]: 15/19 looper letters, 3 selfloop transitions, 1 changer transitions 4/18 dead transitions. [2021-06-13 09:16:06,915 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 18 transitions, 100 flow [2021-06-13 09:16:06,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 09:16:06,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 09:16:06,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2021-06-13 09:16:06,917 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8210526315789474 [2021-06-13 09:16:06,917 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 78 transitions. [2021-06-13 09:16:06,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 78 transitions. [2021-06-13 09:16:06,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:16:06,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 78 transitions. [2021-06-13 09:16:06,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:16:06,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:16:06,919 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:16:06,919 INFO L185 Difference]: Start difference. First operand has 31 places, 16 transitions, 70 flow. Second operand 5 states and 78 transitions. [2021-06-13 09:16:06,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 18 transitions, 100 flow [2021-06-13 09:16:06,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 18 transitions, 96 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-06-13 09:16:06,921 INFO L241 Difference]: Finished difference. Result has 34 places, 14 transitions, 57 flow [2021-06-13 09:16:06,921 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=57, PETRI_PLACES=34, PETRI_TRANSITIONS=14} [2021-06-13 09:16:06,922 INFO L335 CegarLoopForPetriNet]: 24 programPoint places, 10 predicate places. [2021-06-13 09:16:06,922 INFO L482 AbstractCegarLoop]: Abstraction has has 34 places, 14 transitions, 57 flow [2021-06-13 09:16:06,922 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:16:06,922 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:16:06,922 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:16:06,922 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-13 09:16:06,922 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 09:16:06,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:16:06,923 INFO L82 PathProgramCache]: Analyzing trace with hash -456248230, now seen corresponding path program 5 times [2021-06-13 09:16:06,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:16:06,923 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983449671] [2021-06-13 09:16:06,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:16:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:16:07,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:16:07,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:16:07,033 INFO L142 QuantifierPusher]: treesize reduction 79, result has 53.3 percent of original size [2021-06-13 09:16:07,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-06-13 09:16:07,154 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2021-06-13 09:16:07,165 INFO L142 QuantifierPusher]: treesize reduction 133, result has 53.2 percent of original size [2021-06-13 09:16:07,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 151 [2021-06-13 09:16:07,387 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2021-06-13 09:16:07,394 INFO L142 QuantifierPusher]: treesize reduction 72, result has 59.6 percent of original size [2021-06-13 09:16:07,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-06-13 09:16:07,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:16:07,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:16:07,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:16:07,446 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:16:07,446 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983449671] [2021-06-13 09:16:07,446 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983449671] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:16:07,446 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:16:07,446 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-13 09:16:07,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328743523] [2021-06-13 09:16:07,446 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-13 09:16:07,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:16:07,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-13 09:16:07,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-13 09:16:07,447 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 19 [2021-06-13 09:16:07,448 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 14 transitions, 57 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:16:07,448 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:16:07,448 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 19 [2021-06-13 09:16:07,448 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:16:07,603 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-06-13 09:16:07,769 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-06-13 09:16:07,779 INFO L129 PetriNetUnfolder]: 0/23 cut-off events. [2021-06-13 09:16:07,779 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-06-13 09:16:07,779 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 23 events. 0/23 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 32 event pairs, 0 based on Foata normal form. 1/24 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-06-13 09:16:07,779 INFO L132 encePairwiseOnDemand]: 15/19 looper letters, 3 selfloop transitions, 1 changer transitions 2/16 dead transitions. [2021-06-13 09:16:07,779 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 16 transitions, 90 flow [2021-06-13 09:16:07,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 09:16:07,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 09:16:07,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2021-06-13 09:16:07,788 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8105263157894737 [2021-06-13 09:16:07,788 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 77 transitions. [2021-06-13 09:16:07,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 77 transitions. [2021-06-13 09:16:07,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:16:07,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 77 transitions. [2021-06-13 09:16:07,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:16:07,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:16:07,791 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:16:07,792 INFO L185 Difference]: Start difference. First operand has 34 places, 14 transitions, 57 flow. Second operand 5 states and 77 transitions. [2021-06-13 09:16:07,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 16 transitions, 90 flow [2021-06-13 09:16:07,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 16 transitions, 60 flow, removed 6 selfloop flow, removed 9 redundant places. [2021-06-13 09:16:07,793 INFO L241 Difference]: Finished difference. Result has 29 places, 14 transitions, 47 flow [2021-06-13 09:16:07,793 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=47, PETRI_PLACES=29, PETRI_TRANSITIONS=14} [2021-06-13 09:16:07,793 INFO L335 CegarLoopForPetriNet]: 24 programPoint places, 5 predicate places. [2021-06-13 09:16:07,794 INFO L482 AbstractCegarLoop]: Abstraction has has 29 places, 14 transitions, 47 flow [2021-06-13 09:16:07,794 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:16:07,794 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 09:16:07,794 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 09:16:07,794 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-13 09:16:07,794 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-13 09:16:07,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 09:16:07,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1704777336, now seen corresponding path program 6 times [2021-06-13 09:16:07,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 09:16:07,795 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189069219] [2021-06-13 09:16:07,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 09:16:07,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 09:16:07,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:16:07,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:16:07,849 INFO L142 QuantifierPusher]: treesize reduction 150, result has 29.2 percent of original size [2021-06-13 09:16:07,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-06-13 09:16:07,908 INFO L142 QuantifierPusher]: treesize reduction 236, result has 35.0 percent of original size [2021-06-13 09:16:07,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 127 [2021-06-13 09:16:08,007 INFO L142 QuantifierPusher]: treesize reduction 152, result has 38.0 percent of original size [2021-06-13 09:16:08,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-06-13 09:16:08,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 09:16:08,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 09:16:08,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 09:16:08,047 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 09:16:08,047 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189069219] [2021-06-13 09:16:08,047 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189069219] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 09:16:08,047 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 09:16:08,047 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-13 09:16:08,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407669873] [2021-06-13 09:16:08,048 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-13 09:16:08,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 09:16:08,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-13 09:16:08,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-13 09:16:08,049 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 19 [2021-06-13 09:16:08,049 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 14 transitions, 47 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:16:08,050 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 09:16:08,050 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 19 [2021-06-13 09:16:08,050 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 09:16:08,377 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2021-06-13 09:16:08,735 WARN L205 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2021-06-13 09:16:08,737 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2021-06-13 09:16:08,738 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-06-13 09:16:08,738 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 14 events. 0/14 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 0 based on Foata normal form. 1/15 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-06-13 09:16:08,738 INFO L132 encePairwiseOnDemand]: 15/19 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2021-06-13 09:16:08,738 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 13 transitions, 55 flow [2021-06-13 09:16:08,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 09:16:08,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 09:16:08,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2021-06-13 09:16:08,739 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7894736842105263 [2021-06-13 09:16:08,739 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 75 transitions. [2021-06-13 09:16:08,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 75 transitions. [2021-06-13 09:16:08,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 09:16:08,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 75 transitions. [2021-06-13 09:16:08,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:16:08,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:16:08,740 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:16:08,741 INFO L185 Difference]: Start difference. First operand has 29 places, 14 transitions, 47 flow. Second operand 5 states and 75 transitions. [2021-06-13 09:16:08,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 13 transitions, 55 flow [2021-06-13 09:16:08,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 13 transitions, 51 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-06-13 09:16:08,741 INFO L241 Difference]: Finished difference. Result has 27 places, 0 transitions, 0 flow [2021-06-13 09:16:08,741 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=19, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=27, PETRI_TRANSITIONS=0} [2021-06-13 09:16:08,742 INFO L335 CegarLoopForPetriNet]: 24 programPoint places, 3 predicate places. [2021-06-13 09:16:08,742 INFO L482 AbstractCegarLoop]: Abstraction has has 27 places, 0 transitions, 0 flow [2021-06-13 09:16:08,742 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 09:16:08,742 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-13 09:16:08,744 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-13 09:16:08,746 INFO L202 PluginConnector]: Adding new model file-item-subst.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 09:16:08 BasicIcfg [2021-06-13 09:16:08,747 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 09:16:08,747 INFO L168 Benchmark]: Toolchain (without parser) took 5749.41 ms. Allocated memory was 209.7 MB in the beginning and 251.7 MB in the end (delta: 41.9 MB). Free memory was 189.7 MB in the beginning and 168.5 MB in the end (delta: 21.1 MB). Peak memory consumption was 144.1 MB. Max. memory is 8.0 GB. [2021-06-13 09:16:08,748 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 209.7 MB. Free memory is still 190.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 09:16:08,749 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.51 ms. Allocated memory is still 209.7 MB. Free memory was 189.6 MB in the beginning and 188.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 09:16:08,749 INFO L168 Benchmark]: Boogie Preprocessor took 21.01 ms. Allocated memory is still 209.7 MB. Free memory was 188.1 MB in the beginning and 187.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 09:16:08,750 INFO L168 Benchmark]: RCFGBuilder took 210.80 ms. Allocated memory is still 209.7 MB. Free memory was 187.1 MB in the beginning and 176.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-06-13 09:16:08,750 INFO L168 Benchmark]: TraceAbstraction took 5483.54 ms. Allocated memory was 209.7 MB in the beginning and 251.7 MB in the end (delta: 41.9 MB). Free memory was 176.0 MB in the beginning and 168.5 MB in the end (delta: 7.5 MB). Peak memory consumption was 130.5 MB. Max. memory is 8.0 GB. [2021-06-13 09:16:08,752 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 209.7 MB. Free memory is still 190.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 24.51 ms. Allocated memory is still 209.7 MB. Free memory was 189.6 MB in the beginning and 188.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 21.01 ms. Allocated memory is still 209.7 MB. Free memory was 188.1 MB in the beginning and 187.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 210.80 ms. Allocated memory is still 209.7 MB. Free memory was 187.1 MB in the beginning and 176.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5483.54 ms. Allocated memory was 209.7 MB in the beginning and 251.7 MB in the end (delta: 41.9 MB). Free memory was 176.0 MB in the beginning and 168.5 MB in the end (delta: 7.5 MB). Peak memory consumption was 130.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 50]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 32 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 25.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 5406.3ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 2134.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 31.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 15 SDtfs, 27 SDslu, 0 SDs, 0 SdLazy, 92 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 108.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3698.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=3, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 17.3ms SsaConstructionTime, 161.2ms SatisfiabilityAnalysisTime, 2869.9ms InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 2346 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...