/usr/bin/java -Xmx16000000000 -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/test/easy10.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 08:44:42,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 08:44:42,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 08:44:42,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 08:44:42,872 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 08:44:42,874 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 08:44:42,876 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 08:44:42,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 08:44:42,882 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 08:44:42,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 08:44:42,885 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 08:44:42,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 08:44:42,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 08:44:42,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 08:44:42,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 08:44:42,890 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 08:44:42,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 08:44:42,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 08:44:42,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 08:44:42,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 08:44:42,900 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 08:44:42,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 08:44:42,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 08:44:42,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 08:44:42,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-11 08:44:42,907 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-11 08:44:42,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-11 08:44:42,909 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-11 08:44:42,909 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-11 08:44:42,909 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-11 08:44:42,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 08:44:42,910 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 08:44:42,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 08:44:42,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 08:44:42,912 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 08:44:42,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 08:44:42,913 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 08:44:42,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 08:44:42,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 08:44:42,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 08:44:42,914 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 08:44:42,914 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 [2021-03-11 08:44:42,940 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 08:44:42,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 08:44:42,942 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 08:44:42,943 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 08:44:42,943 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 08:44:42,943 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 08:44:42,943 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 08:44:42,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 08:44:42,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 08:44:42,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 08:44:42,944 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 08:44:42,944 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 08:44:42,944 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 08:44:42,944 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 08:44:42,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 08:44:42,944 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 08:44:42,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 08:44:42,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 08:44:42,945 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 08:44:42,945 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 08:44:42,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 08:44:42,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 08:44:42,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 08:44:42,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 08:44:42,945 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 08:44:42,946 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 08:44:42,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 08:44:42,946 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-11 08:44:42,946 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 08:44:42,946 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 08:44:43,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 08:44:43,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 08:44:43,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 08:44:43,199 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-11 08:44:43,203 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-11 08:44:43,204 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy10.wvr.bpl [2021-03-11 08:44:43,204 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy10.wvr.bpl' [2021-03-11 08:44:43,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 08:44:43,448 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-11 08:44:43,452 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 08:44:43,452 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 08:44:43,452 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 08:44:43,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 08:44:43" (1/1) ... [2021-03-11 08:44:43,464 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 08:44:43" (1/1) ... [2021-03-11 08:44:43,469 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 08:44:43,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 08:44:43,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 08:44:43,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 08:44:43,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 08:44:43" (1/1) ... [2021-03-11 08:44:43,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 08:44:43" (1/1) ... [2021-03-11 08:44:43,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 08:44:43" (1/1) ... [2021-03-11 08:44:43,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 08:44:43" (1/1) ... [2021-03-11 08:44:43,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 08:44:43" (1/1) ... [2021-03-11 08:44:43,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 08:44:43" (1/1) ... [2021-03-11 08:44:43,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 08:44:43" (1/1) ... [2021-03-11 08:44:43,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 08:44:43,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 08:44:43,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 08:44:43,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 08:44:43,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 08:44:43" (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 [2021-03-11 08:44:43,526 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-11 08:44:43,527 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-11 08:44:43,527 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-11 08:44:43,527 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-11 08:44:43,527 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-11 08:44:43,527 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-11 08:44:43,527 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-11 08:44:43,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 08:44:43,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 08:44:43,527 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-11 08:44:43,527 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-11 08:44:43,528 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-11 08:44:43,528 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-03-11 08:44:43,528 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-03-11 08:44:43,528 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-03-11 08:44:43,529 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 08:44:43,719 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 08:44:43,719 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-11 08:44:43,720 INFO L202 PluginConnector]: Adding new model easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:44:43 BoogieIcfgContainer [2021-03-11 08:44:43,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 08:44:43,721 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 08:44:43,721 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 08:44:43,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 08:44:43,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 11.03 08:44:43" (1/2) ... [2021-03-11 08:44:43,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bcc42fe and model type easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:44:43, skipping insertion in model container [2021-03-11 08:44:43,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:44:43" (2/2) ... [2021-03-11 08:44:43,724 INFO L111 eAbstractionObserver]: Analyzing ICFG easy10.wvr.bpl [2021-03-11 08:44:43,727 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 08:44:43,729 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 08:44:43,730 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 08:44:43,758 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-03-11 08:44:43,769 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-11 08:44:43,781 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 08:44:43,781 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 08:44:43,781 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 08:44:43,781 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 08:44:43,781 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 08:44:43,782 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 08:44:43,782 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 08:44:43,782 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 08:44:43,788 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 58 places, 45 transitions, 122 flow [2021-03-11 08:44:43,811 INFO L129 PetriNetUnfolder]: 0/41 cut-off events. [2021-03-11 08:44:43,811 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-11 08:44:43,812 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 41 events. 0/41 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 86 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-11 08:44:43,812 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 45 transitions, 122 flow [2021-03-11 08:44:43,815 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 39 transitions, 102 flow [2021-03-11 08:44:43,829 INFO L129 PetriNetUnfolder]: 0/38 cut-off events. [2021-03-11 08:44:43,830 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-11 08:44:43,830 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 08:44:43,830 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 08:44:43,831 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 08:44:43,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 08:44:43,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1388169208, now seen corresponding path program 1 times [2021-03-11 08:44:43,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 08:44:43,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119580300] [2021-03-11 08:44:43,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 08:44:43,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 08:44:43,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:43,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-11 08:44:43,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:43,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 08:44:43,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 08:44:43,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119580300] [2021-03-11 08:44:43,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 08:44:43,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 08:44:43,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193273246] [2021-03-11 08:44:43,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 08:44:43,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 08:44:43,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 08:44:43,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 08:44:43,989 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 45 [2021-03-11 08:44:43,991 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 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) [2021-03-11 08:44:43,991 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 08:44:43,991 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 45 [2021-03-11 08:44:43,992 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 08:44:44,033 INFO L129 PetriNetUnfolder]: 1/45 cut-off events. [2021-03-11 08:44:44,034 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-03-11 08:44:44,035 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 45 events. 1/45 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 96 event pairs, 1 based on Foata normal form. 1/45 useless extension candidates. Maximal degree in co-relation 47. Up to 6 conditions per place. [2021-03-11 08:44:44,036 INFO L132 encePairwiseOnDemand]: 42/45 looper letters, 2 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2021-03-11 08:44:44,036 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 39 transitions, 110 flow [2021-03-11 08:44:44,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 08:44:44,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 08:44:44,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2021-03-11 08:44:44,046 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9259259259259259 [2021-03-11 08:44:44,046 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 125 transitions. [2021-03-11 08:44:44,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 125 transitions. [2021-03-11 08:44:44,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 08:44:44,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 125 transitions. [2021-03-11 08:44:44,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:44:44,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 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) [2021-03-11 08:44:44,056 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 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) [2021-03-11 08:44:44,057 INFO L185 Difference]: Start difference. First operand has 52 places, 39 transitions, 102 flow. Second operand 3 states and 125 transitions. [2021-03-11 08:44:44,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 39 transitions, 110 flow [2021-03-11 08:44:44,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 39 transitions, 94 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-03-11 08:44:44,063 INFO L241 Difference]: Finished difference. Result has 47 places, 39 transitions, 94 flow [2021-03-11 08:44:44,064 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=47, PETRI_TRANSITIONS=39} [2021-03-11 08:44:44,065 INFO L335 CegarLoopForPetriNet]: 52 programPoint places, -5 predicate places. [2021-03-11 08:44:44,065 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 94 flow [2021-03-11 08:44:44,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 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) [2021-03-11 08:44:44,065 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 08:44:44,065 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 08:44:44,065 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 08:44:44,065 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 08:44:44,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 08:44:44,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1425460208, now seen corresponding path program 2 times [2021-03-11 08:44:44,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 08:44:44,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746044214] [2021-03-11 08:44:44,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 08:44:44,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 08:44:44,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:44,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-11 08:44:44,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:44,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 08:44:44,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 08:44:44,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746044214] [2021-03-11 08:44:44,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 08:44:44,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 08:44:44,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230691418] [2021-03-11 08:44:44,100 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 08:44:44,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 08:44:44,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 08:44:44,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 08:44:44,101 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 45 [2021-03-11 08:44:44,102 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 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) [2021-03-11 08:44:44,102 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 08:44:44,102 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 45 [2021-03-11 08:44:44,102 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 08:44:44,112 INFO L129 PetriNetUnfolder]: 1/45 cut-off events. [2021-03-11 08:44:44,112 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 08:44:44,112 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 103 event pairs, 1 based on Foata normal form. 1/46 useless extension candidates. Maximal degree in co-relation 43. Up to 6 conditions per place. [2021-03-11 08:44:44,112 INFO L132 encePairwiseOnDemand]: 42/45 looper letters, 2 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2021-03-11 08:44:44,113 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 39 transitions, 102 flow [2021-03-11 08:44:44,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 08:44:44,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 08:44:44,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2021-03-11 08:44:44,114 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9259259259259259 [2021-03-11 08:44:44,114 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 125 transitions. [2021-03-11 08:44:44,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 125 transitions. [2021-03-11 08:44:44,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 08:44:44,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 125 transitions. [2021-03-11 08:44:44,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:44:44,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 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) [2021-03-11 08:44:44,116 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 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) [2021-03-11 08:44:44,116 INFO L185 Difference]: Start difference. First operand has 47 places, 39 transitions, 94 flow. Second operand 3 states and 125 transitions. [2021-03-11 08:44:44,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 39 transitions, 102 flow [2021-03-11 08:44:44,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 39 transitions, 98 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 08:44:44,117 INFO L241 Difference]: Finished difference. Result has 48 places, 39 transitions, 98 flow [2021-03-11 08:44:44,117 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2021-03-11 08:44:44,118 INFO L335 CegarLoopForPetriNet]: 52 programPoint places, -4 predicate places. [2021-03-11 08:44:44,118 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 98 flow [2021-03-11 08:44:44,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 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) [2021-03-11 08:44:44,118 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 08:44:44,118 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 08:44:44,118 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 08:44:44,118 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 08:44:44,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 08:44:44,119 INFO L82 PathProgramCache]: Analyzing trace with hash -126316958, now seen corresponding path program 3 times [2021-03-11 08:44:44,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 08:44:44,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880332845] [2021-03-11 08:44:44,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 08:44:44,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 08:44:44,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:44,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-11 08:44:44,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:44,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 08:44:44,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 08:44:44,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880332845] [2021-03-11 08:44:44,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 08:44:44,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 08:44:44,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759013053] [2021-03-11 08:44:44,137 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 08:44:44,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 08:44:44,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 08:44:44,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 08:44:44,138 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 45 [2021-03-11 08:44:44,139 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 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) [2021-03-11 08:44:44,139 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 08:44:44,139 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 45 [2021-03-11 08:44:44,139 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 08:44:44,148 INFO L129 PetriNetUnfolder]: 1/44 cut-off events. [2021-03-11 08:44:44,148 INFO L130 PetriNetUnfolder]: For 2/3 co-relation queries the response was YES. [2021-03-11 08:44:44,149 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 44 events. 1/44 cut-off events. For 2/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 96 event pairs, 1 based on Foata normal form. 2/46 useless extension candidates. Maximal degree in co-relation 49. Up to 6 conditions per place. [2021-03-11 08:44:44,149 INFO L132 encePairwiseOnDemand]: 42/45 looper letters, 2 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2021-03-11 08:44:44,149 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 39 transitions, 106 flow [2021-03-11 08:44:44,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 08:44:44,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 08:44:44,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2021-03-11 08:44:44,150 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9259259259259259 [2021-03-11 08:44:44,150 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 125 transitions. [2021-03-11 08:44:44,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 125 transitions. [2021-03-11 08:44:44,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 08:44:44,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 125 transitions. [2021-03-11 08:44:44,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:44:44,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 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) [2021-03-11 08:44:44,151 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 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) [2021-03-11 08:44:44,152 INFO L185 Difference]: Start difference. First operand has 48 places, 39 transitions, 98 flow. Second operand 3 states and 125 transitions. [2021-03-11 08:44:44,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 39 transitions, 106 flow [2021-03-11 08:44:44,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 39 transitions, 102 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 08:44:44,153 INFO L241 Difference]: Finished difference. Result has 49 places, 39 transitions, 102 flow [2021-03-11 08:44:44,153 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2021-03-11 08:44:44,153 INFO L335 CegarLoopForPetriNet]: 52 programPoint places, -3 predicate places. [2021-03-11 08:44:44,153 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 102 flow [2021-03-11 08:44:44,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 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) [2021-03-11 08:44:44,154 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 08:44:44,154 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 08:44:44,154 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 08:44:44,154 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 08:44:44,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 08:44:44,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1554261298, now seen corresponding path program 4 times [2021-03-11 08:44:44,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 08:44:44,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14593641] [2021-03-11 08:44:44,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 08:44:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 08:44:44,245 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-11 08:44:44,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 08:44:44,251 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:44:44,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:44:44,259 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:44:44,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:44:44,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:44,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:44:44,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:44,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:44:44,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:44,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:44:44,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:44,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:44:44,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:44,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:44:44,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:44,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:44:44,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:44,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:44:44,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:44,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:44:44,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:44,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:44:44,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:44,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:44:44,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:44,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:44:44,449 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-11 08:44:44,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 08:44:44,478 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-11 08:44:44,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 08:44:44,509 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 08:44:44,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:44:44,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:44,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 08:44:44,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 08:44:44,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14593641] [2021-03-11 08:44:44,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 08:44:44,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 08:44:44,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955131666] [2021-03-11 08:44:44,517 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 08:44:44,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 08:44:44,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 08:44:44,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 08:44:44,522 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-03-11 08:44:44,523 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 102 flow. Second operand has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:44:44,523 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 08:44:44,523 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-03-11 08:44:44,524 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 08:44:45,515 INFO L129 PetriNetUnfolder]: 781/1559 cut-off events. [2021-03-11 08:44:45,515 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 08:44:45,518 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2897 conditions, 1559 events. 781/1559 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 9343 event pairs, 386 based on Foata normal form. 1/1533 useless extension candidates. Maximal degree in co-relation 2825. Up to 1051 conditions per place. [2021-03-11 08:44:45,524 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 43 selfloop transitions, 57 changer transitions 3/124 dead transitions. [2021-03-11 08:44:45,524 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 124 transitions, 478 flow [2021-03-11 08:44:45,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-03-11 08:44:45,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-03-11 08:44:45,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 728 transitions. [2021-03-11 08:44:45,527 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.674074074074074 [2021-03-11 08:44:45,527 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 728 transitions. [2021-03-11 08:44:45,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 728 transitions. [2021-03-11 08:44:45,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 08:44:45,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 728 transitions. [2021-03-11 08:44:45,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 30.333333333333332) internal successors, (728), 24 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:44:45,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 45.0) internal successors, (1125), 25 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:44:45,532 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 45.0) internal successors, (1125), 25 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:44:45,532 INFO L185 Difference]: Start difference. First operand has 49 places, 39 transitions, 102 flow. Second operand 24 states and 728 transitions. [2021-03-11 08:44:45,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 124 transitions, 478 flow [2021-03-11 08:44:45,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 124 transitions, 474 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 08:44:45,536 INFO L241 Difference]: Finished difference. Result has 78 places, 95 transitions, 388 flow [2021-03-11 08:44:45,536 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=388, PETRI_PLACES=78, PETRI_TRANSITIONS=95} [2021-03-11 08:44:45,536 INFO L335 CegarLoopForPetriNet]: 52 programPoint places, 26 predicate places. [2021-03-11 08:44:45,536 INFO L480 AbstractCegarLoop]: Abstraction has has 78 places, 95 transitions, 388 flow [2021-03-11 08:44:45,536 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:44:45,537 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 08:44:45,537 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 08:44:45,537 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 08:44:45,537 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 08:44:45,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 08:44:45,537 INFO L82 PathProgramCache]: Analyzing trace with hash -834571398, now seen corresponding path program 5 times [2021-03-11 08:44:45,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 08:44:45,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704511555] [2021-03-11 08:44:45,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 08:44:45,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 08:44:45,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:45,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-03-11 08:44:45,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:45,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 08:44:45,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 08:44:45,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704511555] [2021-03-11 08:44:45,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 08:44:45,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 08:44:45,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015207774] [2021-03-11 08:44:45,551 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 08:44:45,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 08:44:45,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 08:44:45,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 08:44:45,552 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 45 [2021-03-11 08:44:45,552 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 95 transitions, 388 flow. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 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) [2021-03-11 08:44:45,552 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 08:44:45,552 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 45 [2021-03-11 08:44:45,552 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 08:44:45,579 INFO L129 PetriNetUnfolder]: 223/553 cut-off events. [2021-03-11 08:44:45,579 INFO L130 PetriNetUnfolder]: For 27/33 co-relation queries the response was YES. [2021-03-11 08:44:45,581 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1065 conditions, 553 events. 223/553 cut-off events. For 27/33 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3221 event pairs, 140 based on Foata normal form. 15/537 useless extension candidates. Maximal degree in co-relation 1048. Up to 330 conditions per place. [2021-03-11 08:44:45,582 INFO L132 encePairwiseOnDemand]: 42/45 looper letters, 2 selfloop transitions, 2 changer transitions 0/95 dead transitions. [2021-03-11 08:44:45,583 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 95 transitions, 396 flow [2021-03-11 08:44:45,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 08:44:45,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 08:44:45,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2021-03-11 08:44:45,583 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9259259259259259 [2021-03-11 08:44:45,583 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 125 transitions. [2021-03-11 08:44:45,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 125 transitions. [2021-03-11 08:44:45,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 08:44:45,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 125 transitions. [2021-03-11 08:44:45,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:44:45,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 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) [2021-03-11 08:44:45,584 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 45.0) internal successors, (180), 4 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) [2021-03-11 08:44:45,584 INFO L185 Difference]: Start difference. First operand has 78 places, 95 transitions, 388 flow. Second operand 3 states and 125 transitions. [2021-03-11 08:44:45,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 95 transitions, 396 flow [2021-03-11 08:44:45,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 95 transitions, 394 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-11 08:44:45,587 INFO L241 Difference]: Finished difference. Result has 77 places, 95 transitions, 394 flow [2021-03-11 08:44:45,587 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=394, PETRI_PLACES=77, PETRI_TRANSITIONS=95} [2021-03-11 08:44:45,587 INFO L335 CegarLoopForPetriNet]: 52 programPoint places, 25 predicate places. [2021-03-11 08:44:45,588 INFO L480 AbstractCegarLoop]: Abstraction has has 77 places, 95 transitions, 394 flow [2021-03-11 08:44:45,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 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) [2021-03-11 08:44:45,588 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 08:44:45,588 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 08:44:45,588 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 08:44:45,588 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 08:44:45,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 08:44:45,588 INFO L82 PathProgramCache]: Analyzing trace with hash -70517682, now seen corresponding path program 6 times [2021-03-11 08:44:45,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 08:44:45,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549532355] [2021-03-11 08:44:45,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 08:44:45,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 08:44:45,629 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-11 08:44:45,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 08:44:45,633 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:44:45,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:44:45,638 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:44:45,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:44:45,644 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-11 08:44:45,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 08:44:45,651 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-11 08:44:45,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 08:44:45,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:45,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:44:45,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:45,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:44:45,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:45,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:44:45,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:45,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:44:45,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:45,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:44:45,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:45,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:44:45,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:45,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:44:45,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:45,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:44:45,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:45,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:44:45,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:45,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:44:45,830 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 08:44:45,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 08:44:45,850 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 08:44:45,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:44:45,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:45,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 08:44:45,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 08:44:45,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549532355] [2021-03-11 08:44:45,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 08:44:45,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 08:44:45,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93526575] [2021-03-11 08:44:45,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 08:44:45,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 08:44:45,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 08:44:45,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 08:44:45,855 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-03-11 08:44:45,855 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 95 transitions, 394 flow. Second operand has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:44:45,855 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 08:44:45,855 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-03-11 08:44:45,855 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 08:44:47,998 INFO L129 PetriNetUnfolder]: 843/1781 cut-off events. [2021-03-11 08:44:47,998 INFO L130 PetriNetUnfolder]: For 732/770 co-relation queries the response was YES. [2021-03-11 08:44:48,002 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4775 conditions, 1781 events. 843/1781 cut-off events. For 732/770 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 11093 event pairs, 263 based on Foata normal form. 5/1762 useless extension candidates. Maximal degree in co-relation 4654. Up to 1003 conditions per place. [2021-03-11 08:44:48,008 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 120 selfloop transitions, 178 changer transitions 5/324 dead transitions. [2021-03-11 08:44:48,008 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 324 transitions, 1967 flow [2021-03-11 08:44:48,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-03-11 08:44:48,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-03-11 08:44:48,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 1768 transitions. [2021-03-11 08:44:48,012 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6773946360153257 [2021-03-11 08:44:48,012 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 1768 transitions. [2021-03-11 08:44:48,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 1768 transitions. [2021-03-11 08:44:48,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 08:44:48,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 1768 transitions. [2021-03-11 08:44:48,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 30.482758620689655) internal successors, (1768), 58 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:44:48,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 45.0) internal successors, (2655), 59 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:44:48,019 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 45.0) internal successors, (2655), 59 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:44:48,019 INFO L185 Difference]: Start difference. First operand has 77 places, 95 transitions, 394 flow. Second operand 58 states and 1768 transitions. [2021-03-11 08:44:48,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 324 transitions, 1967 flow [2021-03-11 08:44:48,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 324 transitions, 1963 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 08:44:48,077 INFO L241 Difference]: Finished difference. Result has 152 places, 265 transitions, 1671 flow [2021-03-11 08:44:48,077 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=1671, PETRI_PLACES=152, PETRI_TRANSITIONS=265} [2021-03-11 08:44:48,077 INFO L335 CegarLoopForPetriNet]: 52 programPoint places, 100 predicate places. [2021-03-11 08:44:48,077 INFO L480 AbstractCegarLoop]: Abstraction has has 152 places, 265 transitions, 1671 flow [2021-03-11 08:44:48,078 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:44:48,078 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 08:44:48,078 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 08:44:48,078 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 08:44:48,078 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 08:44:48,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 08:44:48,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1958520998, now seen corresponding path program 7 times [2021-03-11 08:44:48,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 08:44:48,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058545381] [2021-03-11 08:44:48,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 08:44:48,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 08:44:48,146 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-11 08:44:48,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 08:44:48,150 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:44:48,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:44:48,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:48,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:44:48,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:48,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:44:48,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:48,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:44:48,182 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:48,183 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:44:48,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:48,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:44:48,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:48,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:44:48,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:48,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:44:48,240 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:48,241 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:44:48,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:48,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:44:48,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:48,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:44:48,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:48,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:44:48,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:48,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:44:48,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:48,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:44:48,353 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-11 08:44:48,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 08:44:48,374 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 08:44:48,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:44:48,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:48,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 08:44:48,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 08:44:48,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058545381] [2021-03-11 08:44:48,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 08:44:48,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 08:44:48,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142471213] [2021-03-11 08:44:48,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 08:44:48,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 08:44:48,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 08:44:48,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-11 08:44:48,382 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-03-11 08:44:48,382 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 265 transitions, 1671 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:44:48,382 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 08:44:48,382 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-03-11 08:44:48,382 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 08:44:50,882 INFO L129 PetriNetUnfolder]: 1190/2495 cut-off events. [2021-03-11 08:44:50,882 INFO L130 PetriNetUnfolder]: For 8965/9098 co-relation queries the response was YES. [2021-03-11 08:44:50,891 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10166 conditions, 2495 events. 1190/2495 cut-off events. For 8965/9098 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 16633 event pairs, 237 based on Foata normal form. 4/2473 useless extension candidates. Maximal degree in co-relation 10106. Up to 1427 conditions per place. [2021-03-11 08:44:50,901 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 280 selfloop transitions, 278 changer transitions 5/584 dead transitions. [2021-03-11 08:44:50,901 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 584 transitions, 5357 flow [2021-03-11 08:44:50,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-03-11 08:44:50,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-03-11 08:44:50,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 2234 transitions. [2021-03-11 08:44:50,906 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6708708708708708 [2021-03-11 08:44:50,906 INFO L72 ComplementDD]: Start complementDD. Operand 74 states and 2234 transitions. [2021-03-11 08:44:50,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 74 states and 2234 transitions. [2021-03-11 08:44:50,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 08:44:50,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 74 states and 2234 transitions. [2021-03-11 08:44:50,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 75 states, 74 states have (on average 30.18918918918919) internal successors, (2234), 74 states have internal predecessors, (2234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:44:50,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 75 states, 75 states have (on average 45.0) internal successors, (3375), 75 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:44:50,914 INFO L81 ComplementDD]: Finished complementDD. Result has 75 states, 75 states have (on average 45.0) internal successors, (3375), 75 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:44:50,914 INFO L185 Difference]: Start difference. First operand has 152 places, 265 transitions, 1671 flow. Second operand 74 states and 2234 transitions. [2021-03-11 08:44:50,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 584 transitions, 5357 flow [2021-03-11 08:44:50,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 584 transitions, 5069 flow, removed 108 selfloop flow, removed 3 redundant places. [2021-03-11 08:44:50,980 INFO L241 Difference]: Finished difference. Result has 238 places, 550 transitions, 4560 flow [2021-03-11 08:44:50,980 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1453, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=74, PETRI_FLOW=4560, PETRI_PLACES=238, PETRI_TRANSITIONS=550} [2021-03-11 08:44:50,980 INFO L335 CegarLoopForPetriNet]: 52 programPoint places, 186 predicate places. [2021-03-11 08:44:50,980 INFO L480 AbstractCegarLoop]: Abstraction has has 238 places, 550 transitions, 4560 flow [2021-03-11 08:44:50,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:44:50,980 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 08:44:50,980 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 08:44:50,981 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 08:44:50,981 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 08:44:50,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 08:44:50,981 INFO L82 PathProgramCache]: Analyzing trace with hash -618481434, now seen corresponding path program 8 times [2021-03-11 08:44:50,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 08:44:50,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816084096] [2021-03-11 08:44:50,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 08:44:50,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 08:44:51,021 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-11 08:44:51,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 08:44:51,026 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:44:51,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:44:51,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:51,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:44:51,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:51,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:44:51,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:51,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:44:51,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:51,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:44:51,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:51,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:44:51,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:51,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:44:51,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:51,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:44:51,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:51,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:44:51,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:51,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:44:51,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:51,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:44:51,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:51,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:44:51,183 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 08:44:51,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 08:44:51,204 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 08:44:51,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 08:44:51,223 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 08:44:51,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 08:44:51,244 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 08:44:51,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:44:51,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:51,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 08:44:51,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 08:44:51,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816084096] [2021-03-11 08:44:51,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 08:44:51,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 08:44:51,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448075119] [2021-03-11 08:44:51,262 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 08:44:51,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 08:44:51,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 08:44:51,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 08:44:51,263 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-03-11 08:44:51,264 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 550 transitions, 4560 flow. Second operand has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:44:51,264 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 08:44:51,264 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-03-11 08:44:51,264 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 08:44:53,976 INFO L129 PetriNetUnfolder]: 1673/3415 cut-off events. [2021-03-11 08:44:53,977 INFO L130 PetriNetUnfolder]: For 20537/20824 co-relation queries the response was YES. [2021-03-11 08:44:53,991 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17096 conditions, 3415 events. 1673/3415 cut-off events. For 20537/20824 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 23764 event pairs, 241 based on Foata normal form. 27/3415 useless extension candidates. Maximal degree in co-relation 17013. Up to 2025 conditions per place. [2021-03-11 08:44:54,008 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 539 selfloop transitions, 434 changer transitions 5/999 dead transitions. [2021-03-11 08:44:54,008 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 999 transitions, 10885 flow [2021-03-11 08:44:54,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-03-11 08:44:54,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-03-11 08:44:54,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 1865 transitions. [2021-03-11 08:44:54,010 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6907407407407408 [2021-03-11 08:44:54,010 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 1865 transitions. [2021-03-11 08:44:54,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 1865 transitions. [2021-03-11 08:44:54,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 08:44:54,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 1865 transitions. [2021-03-11 08:44:54,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 31.083333333333332) internal successors, (1865), 60 states have internal predecessors, (1865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:44:54,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 45.0) internal successors, (2745), 61 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:44:54,016 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 45.0) internal successors, (2745), 61 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:44:54,016 INFO L185 Difference]: Start difference. First operand has 238 places, 550 transitions, 4560 flow. Second operand 60 states and 1865 transitions. [2021-03-11 08:44:54,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 999 transitions, 10885 flow [2021-03-11 08:44:54,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 999 transitions, 9268 flow, removed 761 selfloop flow, removed 2 redundant places. [2021-03-11 08:44:54,173 INFO L241 Difference]: Finished difference. Result has 319 places, 930 transitions, 8267 flow [2021-03-11 08:44:54,173 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3164, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=8267, PETRI_PLACES=319, PETRI_TRANSITIONS=930} [2021-03-11 08:44:54,173 INFO L335 CegarLoopForPetriNet]: 52 programPoint places, 267 predicate places. [2021-03-11 08:44:54,174 INFO L480 AbstractCegarLoop]: Abstraction has has 319 places, 930 transitions, 8267 flow [2021-03-11 08:44:54,174 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:44:54,174 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 08:44:54,174 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 08:44:54,174 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 08:44:54,174 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 08:44:54,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 08:44:54,174 INFO L82 PathProgramCache]: Analyzing trace with hash -529751674, now seen corresponding path program 9 times [2021-03-11 08:44:54,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 08:44:54,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610129533] [2021-03-11 08:44:54,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 08:44:54,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 08:44:54,219 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-11 08:44:54,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 08:44:54,224 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:44:54,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:44:54,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:54,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:44:54,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:54,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:44:54,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:54,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:44:54,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:54,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:44:54,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:54,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:44:54,277 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:54,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:44:54,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:54,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:44:54,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:54,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:44:54,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:54,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:44:54,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:54,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:44:54,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:54,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:44:54,346 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 08:44:54,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 08:44:54,364 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-11 08:44:54,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 08:44:54,383 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 08:44:54,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 08:44:54,401 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 08:44:54,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:44:54,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:54,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 08:44:54,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 08:44:54,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610129533] [2021-03-11 08:44:54,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 08:44:54,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 08:44:54,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644607929] [2021-03-11 08:44:54,405 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 08:44:54,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 08:44:54,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 08:44:54,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 08:44:54,406 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-03-11 08:44:54,406 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 930 transitions, 8267 flow. Second operand has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:44:54,406 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 08:44:54,406 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-03-11 08:44:54,406 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 08:44:57,212 INFO L129 PetriNetUnfolder]: 2089/4245 cut-off events. [2021-03-11 08:44:57,212 INFO L130 PetriNetUnfolder]: For 38687/39195 co-relation queries the response was YES. [2021-03-11 08:44:57,234 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24482 conditions, 4245 events. 2089/4245 cut-off events. For 38687/39195 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 30939 event pairs, 251 based on Foata normal form. 35/4253 useless extension candidates. Maximal degree in co-relation 24354. Up to 2669 conditions per place. [2021-03-11 08:44:57,258 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 828 selfloop transitions, 430 changer transitions 5/1284 dead transitions. [2021-03-11 08:44:57,258 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 1284 transitions, 15526 flow [2021-03-11 08:44:57,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-03-11 08:44:57,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2021-03-11 08:44:57,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 2065 transitions. [2021-03-11 08:44:57,261 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6849087893864013 [2021-03-11 08:44:57,261 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 2065 transitions. [2021-03-11 08:44:57,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 2065 transitions. [2021-03-11 08:44:57,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 08:44:57,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 2065 transitions. [2021-03-11 08:44:57,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 30.82089552238806) internal successors, (2065), 67 states have internal predecessors, (2065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:44:57,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 45.0) internal successors, (3060), 68 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:44:57,267 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 45.0) internal successors, (3060), 68 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:44:57,267 INFO L185 Difference]: Start difference. First operand has 319 places, 930 transitions, 8267 flow. Second operand 67 states and 2065 transitions. [2021-03-11 08:44:57,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 1284 transitions, 15526 flow [2021-03-11 08:44:57,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 1284 transitions, 13962 flow, removed 761 selfloop flow, removed 3 redundant places. [2021-03-11 08:44:57,549 INFO L241 Difference]: Finished difference. Result has 415 places, 1221 transitions, 11950 flow [2021-03-11 08:44:57,550 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=6931, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=930, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=706, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=11950, PETRI_PLACES=415, PETRI_TRANSITIONS=1221} [2021-03-11 08:44:57,550 INFO L335 CegarLoopForPetriNet]: 52 programPoint places, 363 predicate places. [2021-03-11 08:44:57,550 INFO L480 AbstractCegarLoop]: Abstraction has has 415 places, 1221 transitions, 11950 flow [2021-03-11 08:44:57,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:44:57,550 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 08:44:57,550 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 08:44:57,550 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 08:44:57,550 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 08:44:57,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 08:44:57,551 INFO L82 PathProgramCache]: Analyzing trace with hash 2114991102, now seen corresponding path program 10 times [2021-03-11 08:44:57,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 08:44:57,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766954707] [2021-03-11 08:44:57,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 08:44:57,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 08:44:57,570 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-11 08:44:57,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 08:44:57,574 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:44:57,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:44:57,580 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:44:57,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:44:57,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:57,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:44:57,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:57,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:44:57,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:57,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:44:57,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:57,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:44:57,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:57,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:44:57,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:57,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:44:57,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:57,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:44:57,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:57,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:44:57,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:57,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:44:57,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:57,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:44:57,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:57,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:44:57,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:57,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:44:57,769 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-11 08:44:57,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 08:44:57,790 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 08:44:57,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:44:57,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:44:57,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 08:44:57,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 08:44:57,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766954707] [2021-03-11 08:44:57,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 08:44:57,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 08:44:57,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595208032] [2021-03-11 08:44:57,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 08:44:57,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 08:44:57,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 08:44:57,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-11 08:44:57,798 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-03-11 08:44:57,798 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 1221 transitions, 11950 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:44:57,798 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 08:44:57,799 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-03-11 08:44:57,799 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 08:45:01,560 INFO L129 PetriNetUnfolder]: 2555/5162 cut-off events. [2021-03-11 08:45:01,560 INFO L130 PetriNetUnfolder]: For 96695/97527 co-relation queries the response was YES. [2021-03-11 08:45:01,605 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34662 conditions, 5162 events. 2555/5162 cut-off events. For 96695/97527 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 38882 event pairs, 253 based on Foata normal form. 99/5235 useless extension candidates. Maximal degree in co-relation 34476. Up to 3114 conditions per place. [2021-03-11 08:45:01,638 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 992 selfloop transitions, 702 changer transitions 8/1723 dead transitions. [2021-03-11 08:45:01,638 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 1723 transitions, 24417 flow [2021-03-11 08:45:01,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-03-11 08:45:01,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2021-03-11 08:45:01,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 2841 transitions. [2021-03-11 08:45:01,646 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.678853046594982 [2021-03-11 08:45:01,646 INFO L72 ComplementDD]: Start complementDD. Operand 93 states and 2841 transitions. [2021-03-11 08:45:01,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 93 states and 2841 transitions. [2021-03-11 08:45:01,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 08:45:01,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 93 states and 2841 transitions. [2021-03-11 08:45:01,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 94 states, 93 states have (on average 30.548387096774192) internal successors, (2841), 93 states have internal predecessors, (2841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:45:01,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 94 states, 94 states have (on average 45.0) internal successors, (4230), 94 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:45:01,656 INFO L81 ComplementDD]: Finished complementDD. Result has 94 states, 94 states have (on average 45.0) internal successors, (4230), 94 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:45:01,657 INFO L185 Difference]: Start difference. First operand has 415 places, 1221 transitions, 11950 flow. Second operand 93 states and 2841 transitions. [2021-03-11 08:45:01,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 1723 transitions, 24417 flow [2021-03-11 08:45:02,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 1723 transitions, 22189 flow, removed 1097 selfloop flow, removed 3 redundant places. [2021-03-11 08:45:02,352 INFO L241 Difference]: Finished difference. Result has 515 places, 1663 transitions, 20138 flow [2021-03-11 08:45:02,353 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=10038, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=319, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=879, PETRI_DIFFERENCE_SUBTRAHEND_STATES=93, PETRI_FLOW=20138, PETRI_PLACES=515, PETRI_TRANSITIONS=1663} [2021-03-11 08:45:02,353 INFO L335 CegarLoopForPetriNet]: 52 programPoint places, 463 predicate places. [2021-03-11 08:45:02,353 INFO L480 AbstractCegarLoop]: Abstraction has has 515 places, 1663 transitions, 20138 flow [2021-03-11 08:45:02,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:45:02,354 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 08:45:02,354 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 08:45:02,354 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 08:45:02,354 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 08:45:02,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 08:45:02,354 INFO L82 PathProgramCache]: Analyzing trace with hash 283519690, now seen corresponding path program 11 times [2021-03-11 08:45:02,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 08:45:02,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889293335] [2021-03-11 08:45:02,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 08:45:02,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 08:45:02,379 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-11 08:45:02,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 08:45:02,384 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:45:02,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:45:02,390 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:45:02,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:45:02,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:02,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:45:02,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:02,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:02,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:02,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:02,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:02,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:02,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:02,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:02,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:02,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:02,472 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:02,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:02,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:02,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:45:02,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:02,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:02,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:02,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:02,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:02,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:02,573 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:02,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:45:02,597 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-11 08:45:02,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 08:45:02,617 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 08:45:02,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:02,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:02,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 08:45:02,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 08:45:02,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889293335] [2021-03-11 08:45:02,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 08:45:02,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 08:45:02,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547690806] [2021-03-11 08:45:02,621 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 08:45:02,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 08:45:02,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 08:45:02,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-11 08:45:02,621 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-03-11 08:45:02,622 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 1663 transitions, 20138 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:45:02,622 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 08:45:02,622 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-03-11 08:45:02,622 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 08:45:06,580 INFO L129 PetriNetUnfolder]: 3171/6426 cut-off events. [2021-03-11 08:45:06,581 INFO L130 PetriNetUnfolder]: For 127619/129236 co-relation queries the response was YES. [2021-03-11 08:45:06,641 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43824 conditions, 6426 events. 3171/6426 cut-off events. For 127619/129236 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 50542 event pairs, 300 based on Foata normal form. 310/6706 useless extension candidates. Maximal degree in co-relation 43619. Up to 3697 conditions per place. [2021-03-11 08:45:06,678 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 1294 selfloop transitions, 1022 changer transitions 8/2345 dead transitions. [2021-03-11 08:45:06,678 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 2345 transitions, 34474 flow [2021-03-11 08:45:06,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-03-11 08:45:06,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-03-11 08:45:06,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 2212 transitions. [2021-03-11 08:45:06,681 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6733637747336377 [2021-03-11 08:45:06,681 INFO L72 ComplementDD]: Start complementDD. Operand 73 states and 2212 transitions. [2021-03-11 08:45:06,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 73 states and 2212 transitions. [2021-03-11 08:45:06,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 08:45:06,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 73 states and 2212 transitions. [2021-03-11 08:45:06,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 74 states, 73 states have (on average 30.301369863013697) internal successors, (2212), 73 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:45:06,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 74 states, 74 states have (on average 45.0) internal successors, (3330), 74 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:45:06,687 INFO L81 ComplementDD]: Finished complementDD. Result has 74 states, 74 states have (on average 45.0) internal successors, (3330), 74 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:45:06,687 INFO L185 Difference]: Start difference. First operand has 515 places, 1663 transitions, 20138 flow. Second operand 73 states and 2212 transitions. [2021-03-11 08:45:06,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 584 places, 2345 transitions, 34474 flow [2021-03-11 08:45:07,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 2345 transitions, 26464 flow, removed 3893 selfloop flow, removed 5 redundant places. [2021-03-11 08:45:07,863 INFO L241 Difference]: Finished difference. Result has 603 places, 2224 transitions, 23762 flow [2021-03-11 08:45:07,864 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=13670, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1663, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=561, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=995, PETRI_DIFFERENCE_SUBTRAHEND_STATES=73, PETRI_FLOW=23762, PETRI_PLACES=603, PETRI_TRANSITIONS=2224} [2021-03-11 08:45:07,864 INFO L335 CegarLoopForPetriNet]: 52 programPoint places, 551 predicate places. [2021-03-11 08:45:07,864 INFO L480 AbstractCegarLoop]: Abstraction has has 603 places, 2224 transitions, 23762 flow [2021-03-11 08:45:07,864 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:45:07,864 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 08:45:07,864 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 08:45:07,865 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-11 08:45:07,865 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 08:45:07,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 08:45:07,865 INFO L82 PathProgramCache]: Analyzing trace with hash -79766378, now seen corresponding path program 12 times [2021-03-11 08:45:07,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 08:45:07,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623982066] [2021-03-11 08:45:07,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 08:45:07,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 08:45:07,890 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-11 08:45:07,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 08:45:07,897 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:45:07,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:45:07,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:07,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:45:07,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:07,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:07,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:07,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:07,926 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:07,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:45:07,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:07,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:45:07,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:07,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:45:07,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:07,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:07,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:07,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:07,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:07,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:45:07,999 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:08,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:08,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:08,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:08,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:08,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:45:08,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:08,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:45:08,120 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-11 08:45:08,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 08:45:08,139 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 08:45:08,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:08,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:08,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 08:45:08,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 08:45:08,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623982066] [2021-03-11 08:45:08,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 08:45:08,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 08:45:08,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230065599] [2021-03-11 08:45:08,142 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 08:45:08,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 08:45:08,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 08:45:08,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-11 08:45:08,143 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-03-11 08:45:08,143 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 2224 transitions, 23762 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:45:08,144 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 08:45:08,144 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-03-11 08:45:08,144 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 08:45:14,373 INFO L129 PetriNetUnfolder]: 4059/8271 cut-off events. [2021-03-11 08:45:14,373 INFO L130 PetriNetUnfolder]: For 162980/165114 co-relation queries the response was YES. [2021-03-11 08:45:14,453 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58016 conditions, 8271 events. 4059/8271 cut-off events. For 162980/165114 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 68397 event pairs, 212 based on Foata normal form. 439/8678 useless extension candidates. Maximal degree in co-relation 57720. Up to 5020 conditions per place. [2021-03-11 08:45:14,495 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 2032 selfloop transitions, 1075 changer transitions 12/3140 dead transitions. [2021-03-11 08:45:14,495 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 716 places, 3140 transitions, 47059 flow [2021-03-11 08:45:14,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2021-03-11 08:45:14,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2021-03-11 08:45:14,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 3547 transitions. [2021-03-11 08:45:14,498 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6795019157088122 [2021-03-11 08:45:14,498 INFO L72 ComplementDD]: Start complementDD. Operand 116 states and 3547 transitions. [2021-03-11 08:45:14,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 116 states and 3547 transitions. [2021-03-11 08:45:14,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 08:45:14,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 116 states and 3547 transitions. [2021-03-11 08:45:14,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 117 states, 116 states have (on average 30.57758620689655) internal successors, (3547), 116 states have internal predecessors, (3547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:45:14,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 117 states, 117 states have (on average 45.0) internal successors, (5265), 117 states have internal predecessors, (5265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:45:14,506 INFO L81 ComplementDD]: Finished complementDD. Result has 117 states, 117 states have (on average 45.0) internal successors, (5265), 117 states have internal predecessors, (5265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:45:14,507 INFO L185 Difference]: Start difference. First operand has 603 places, 2224 transitions, 23762 flow. Second operand 116 states and 3547 transitions. [2021-03-11 08:45:14,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 716 places, 3140 transitions, 47059 flow [2021-03-11 08:45:16,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 710 places, 3140 transitions, 42064 flow, removed 2399 selfloop flow, removed 6 redundant places. [2021-03-11 08:45:16,088 INFO L241 Difference]: Finished difference. Result has 744 places, 3023 transitions, 38218 flow [2021-03-11 08:45:16,089 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=20424, PETRI_DIFFERENCE_MINUEND_PLACES=595, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=405, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1624, PETRI_DIFFERENCE_SUBTRAHEND_STATES=116, PETRI_FLOW=38218, PETRI_PLACES=744, PETRI_TRANSITIONS=3023} [2021-03-11 08:45:16,089 INFO L335 CegarLoopForPetriNet]: 52 programPoint places, 692 predicate places. [2021-03-11 08:45:16,089 INFO L480 AbstractCegarLoop]: Abstraction has has 744 places, 3023 transitions, 38218 flow [2021-03-11 08:45:16,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:45:16,090 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 08:45:16,090 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 08:45:16,090 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-11 08:45:16,090 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 08:45:16,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 08:45:16,090 INFO L82 PathProgramCache]: Analyzing trace with hash 871351210, now seen corresponding path program 13 times [2021-03-11 08:45:16,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 08:45:16,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928403030] [2021-03-11 08:45:16,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 08:45:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 08:45:16,109 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-11 08:45:16,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 08:45:16,113 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:45:16,113 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:45:16,119 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:45:16,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:45:16,125 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-11 08:45:16,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 08:45:16,132 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-11 08:45:16,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 08:45:16,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:16,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:16,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:16,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:16,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:16,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:45:16,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:16,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:16,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:16,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:45:16,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:16,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:45:16,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:16,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:45:16,220 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:16,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:16,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:16,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:45:16,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:16,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:45:16,270 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-11 08:45:16,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 08:45:16,289 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 08:45:16,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:16,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:16,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 08:45:16,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 08:45:16,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928403030] [2021-03-11 08:45:16,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 08:45:16,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 08:45:16,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344180477] [2021-03-11 08:45:16,294 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 08:45:16,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 08:45:16,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 08:45:16,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 08:45:16,295 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-03-11 08:45:16,295 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 744 places, 3023 transitions, 38218 flow. Second operand has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:45:16,295 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 08:45:16,295 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-03-11 08:45:16,295 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 08:45:21,331 INFO L129 PetriNetUnfolder]: 4217/8703 cut-off events. [2021-03-11 08:45:21,331 INFO L130 PetriNetUnfolder]: For 158232/161191 co-relation queries the response was YES. [2021-03-11 08:45:21,454 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61223 conditions, 8703 events. 4217/8703 cut-off events. For 158232/161191 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 73501 event pairs, 243 based on Foata normal form. 236/8899 useless extension candidates. Maximal degree in co-relation 60873. Up to 6006 conditions per place. [2021-03-11 08:45:21,494 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 2694 selfloop transitions, 533 changer transitions 13/3261 dead transitions. [2021-03-11 08:45:21,494 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 799 places, 3261 transitions, 49381 flow [2021-03-11 08:45:21,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-03-11 08:45:21,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-03-11 08:45:21,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 1816 transitions. [2021-03-11 08:45:21,505 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6615664845173042 [2021-03-11 08:45:21,505 INFO L72 ComplementDD]: Start complementDD. Operand 61 states and 1816 transitions. [2021-03-11 08:45:21,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 1816 transitions. [2021-03-11 08:45:21,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 08:45:21,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 61 states and 1816 transitions. [2021-03-11 08:45:21,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 62 states, 61 states have (on average 29.770491803278688) internal successors, (1816), 61 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:45:21,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 62 states, 62 states have (on average 45.0) internal successors, (2790), 62 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:45:21,513 INFO L81 ComplementDD]: Finished complementDD. Result has 62 states, 62 states have (on average 45.0) internal successors, (2790), 62 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:45:21,513 INFO L185 Difference]: Start difference. First operand has 744 places, 3023 transitions, 38218 flow. Second operand 61 states and 1816 transitions. [2021-03-11 08:45:21,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 799 places, 3261 transitions, 49381 flow [2021-03-11 08:45:23,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 793 places, 3261 transitions, 41807 flow, removed 3716 selfloop flow, removed 6 redundant places. [2021-03-11 08:45:23,771 INFO L241 Difference]: Finished difference. Result has 811 places, 3198 transitions, 35453 flow [2021-03-11 08:45:23,773 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=30677, PETRI_DIFFERENCE_MINUEND_PLACES=733, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3023, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=387, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2590, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=35453, PETRI_PLACES=811, PETRI_TRANSITIONS=3198} [2021-03-11 08:45:23,773 INFO L335 CegarLoopForPetriNet]: 52 programPoint places, 759 predicate places. [2021-03-11 08:45:23,773 INFO L480 AbstractCegarLoop]: Abstraction has has 811 places, 3198 transitions, 35453 flow [2021-03-11 08:45:23,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:45:23,774 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 08:45:23,774 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 08:45:23,774 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-11 08:45:23,774 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 08:45:23,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 08:45:23,774 INFO L82 PathProgramCache]: Analyzing trace with hash -100239470, now seen corresponding path program 14 times [2021-03-11 08:45:23,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 08:45:23,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907304385] [2021-03-11 08:45:23,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 08:45:23,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 08:45:23,805 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-11 08:45:23,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 08:45:23,809 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:45:23,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:45:23,814 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:45:23,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:45:23,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:23,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:45:23,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:23,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:23,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:23,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:23,851 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:23,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:45:23,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:23,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:45:23,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:23,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:23,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:23,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:23,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:23,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:45:23,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:23,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:23,948 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:23,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:23,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:23,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:45:23,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:23,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:45:24,002 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-11 08:45:24,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 08:45:24,021 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 08:45:24,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:24,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:24,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 08:45:24,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 08:45:24,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907304385] [2021-03-11 08:45:24,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 08:45:24,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 08:45:24,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535988791] [2021-03-11 08:45:24,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 08:45:24,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 08:45:24,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 08:45:24,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-11 08:45:24,025 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-03-11 08:45:24,025 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 811 places, 3198 transitions, 35453 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:45:24,025 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 08:45:24,025 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-03-11 08:45:24,025 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 08:45:30,076 INFO L129 PetriNetUnfolder]: 4911/9910 cut-off events. [2021-03-11 08:45:30,076 INFO L130 PetriNetUnfolder]: For 176145/179720 co-relation queries the response was YES. [2021-03-11 08:45:30,203 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67012 conditions, 9910 events. 4911/9910 cut-off events. For 176145/179720 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 83978 event pairs, 308 based on Foata normal form. 410/10270 useless extension candidates. Maximal degree in co-relation 66681. Up to 6539 conditions per place. [2021-03-11 08:45:30,247 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 2913 selfloop transitions, 953 changer transitions 3/3890 dead transitions. [2021-03-11 08:45:30,247 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 876 places, 3890 transitions, 53230 flow [2021-03-11 08:45:30,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-03-11 08:45:30,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-03-11 08:45:30,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 2244 transitions. [2021-03-11 08:45:30,249 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6738738738738739 [2021-03-11 08:45:30,249 INFO L72 ComplementDD]: Start complementDD. Operand 74 states and 2244 transitions. [2021-03-11 08:45:30,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 74 states and 2244 transitions. [2021-03-11 08:45:30,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 08:45:30,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 74 states and 2244 transitions. [2021-03-11 08:45:30,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 75 states, 74 states have (on average 30.324324324324323) internal successors, (2244), 74 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:45:30,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 75 states, 75 states have (on average 45.0) internal successors, (3375), 75 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:45:30,254 INFO L81 ComplementDD]: Finished complementDD. Result has 75 states, 75 states have (on average 45.0) internal successors, (3375), 75 states have internal predecessors, (3375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:45:30,254 INFO L185 Difference]: Start difference. First operand has 811 places, 3198 transitions, 35453 flow. Second operand 74 states and 2244 transitions. [2021-03-11 08:45:30,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 876 places, 3890 transitions, 53230 flow [2021-03-11 08:45:32,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 866 places, 3890 transitions, 51043 flow, removed 988 selfloop flow, removed 10 redundant places. [2021-03-11 08:45:32,339 INFO L241 Difference]: Finished difference. Result has 902 places, 3798 transitions, 44596 flow [2021-03-11 08:45:32,341 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=33312, PETRI_DIFFERENCE_MINUEND_PLACES=793, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=464, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2612, PETRI_DIFFERENCE_SUBTRAHEND_STATES=74, PETRI_FLOW=44596, PETRI_PLACES=902, PETRI_TRANSITIONS=3798} [2021-03-11 08:45:32,341 INFO L335 CegarLoopForPetriNet]: 52 programPoint places, 850 predicate places. [2021-03-11 08:45:32,341 INFO L480 AbstractCegarLoop]: Abstraction has has 902 places, 3798 transitions, 44596 flow [2021-03-11 08:45:32,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:45:32,341 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 08:45:32,341 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 08:45:32,341 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-11 08:45:32,341 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 08:45:32,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 08:45:32,342 INFO L82 PathProgramCache]: Analyzing trace with hash -2008836700, now seen corresponding path program 15 times [2021-03-11 08:45:32,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 08:45:32,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819043079] [2021-03-11 08:45:32,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 08:45:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 08:45:32,364 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-11 08:45:32,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 08:45:32,368 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:45:32,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:45:32,373 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:45:32,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:45:32,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:32,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:45:32,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:32,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:32,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:32,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:32,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:32,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:32,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:32,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:45:32,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:32,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:32,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:32,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:32,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:32,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:45:32,483 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:32,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:32,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:32,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:45:32,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:32,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:45:32,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:32,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:45:32,554 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-11 08:45:32,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 08:45:32,574 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 08:45:32,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:32,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:32,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 08:45:32,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 08:45:32,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819043079] [2021-03-11 08:45:32,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 08:45:32,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 08:45:32,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291472072] [2021-03-11 08:45:32,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 08:45:32,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 08:45:32,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 08:45:32,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 08:45:32,577 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-03-11 08:45:32,578 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 902 places, 3798 transitions, 44596 flow. Second operand has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:45:32,578 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 08:45:32,578 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-03-11 08:45:32,578 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 08:45:39,175 INFO L129 PetriNetUnfolder]: 5236/10613 cut-off events. [2021-03-11 08:45:39,175 INFO L130 PetriNetUnfolder]: For 239453/242914 co-relation queries the response was YES. [2021-03-11 08:45:39,331 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77299 conditions, 10613 events. 5236/10613 cut-off events. For 239453/242914 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 91148 event pairs, 284 based on Foata normal form. 361/10924 useless extension candidates. Maximal degree in co-relation 76940. Up to 7461 conditions per place. [2021-03-11 08:45:39,380 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 3520 selfloop transitions, 570 changer transitions 6/4117 dead transitions. [2021-03-11 08:45:39,380 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 960 places, 4117 transitions, 59921 flow [2021-03-11 08:45:39,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-03-11 08:45:39,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-03-11 08:45:39,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 1851 transitions. [2021-03-11 08:45:39,382 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6743169398907104 [2021-03-11 08:45:39,382 INFO L72 ComplementDD]: Start complementDD. Operand 61 states and 1851 transitions. [2021-03-11 08:45:39,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 1851 transitions. [2021-03-11 08:45:39,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 08:45:39,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 61 states and 1851 transitions. [2021-03-11 08:45:39,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 62 states, 61 states have (on average 30.34426229508197) internal successors, (1851), 61 states have internal predecessors, (1851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:45:39,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 62 states, 62 states have (on average 45.0) internal successors, (2790), 62 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:45:39,386 INFO L81 ComplementDD]: Finished complementDD. Result has 62 states, 62 states have (on average 45.0) internal successors, (2790), 62 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:45:39,386 INFO L185 Difference]: Start difference. First operand has 902 places, 3798 transitions, 44596 flow. Second operand 61 states and 1851 transitions. [2021-03-11 08:45:39,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 960 places, 4117 transitions, 59921 flow [2021-03-11 08:45:42,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 955 places, 4117 transitions, 56003 flow, removed 1818 selfloop flow, removed 5 redundant places. [2021-03-11 08:45:42,638 INFO L241 Difference]: Finished difference. Result has 976 places, 4068 transitions, 48705 flow [2021-03-11 08:45:42,641 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=40751, PETRI_DIFFERENCE_MINUEND_PLACES=895, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3798, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=348, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=48705, PETRI_PLACES=976, PETRI_TRANSITIONS=4068} [2021-03-11 08:45:42,641 INFO L335 CegarLoopForPetriNet]: 52 programPoint places, 924 predicate places. [2021-03-11 08:45:42,641 INFO L480 AbstractCegarLoop]: Abstraction has has 976 places, 4068 transitions, 48705 flow [2021-03-11 08:45:42,641 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:45:42,641 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 08:45:42,641 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 08:45:42,641 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-11 08:45:42,641 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 08:45:42,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 08:45:42,642 INFO L82 PathProgramCache]: Analyzing trace with hash 535978322, now seen corresponding path program 16 times [2021-03-11 08:45:42,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 08:45:42,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071389659] [2021-03-11 08:45:42,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 08:45:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 08:45:42,657 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-11 08:45:42,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 08:45:42,662 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:45:42,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:45:42,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:42,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:45:42,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:42,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:42,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:42,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:42,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:42,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:42,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:42,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:42,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:42,724 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:42,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:42,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:42,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:42,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:42,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:42,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:45:42,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:42,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:42,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:42,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:45:42,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:42,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:45:42,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:42,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:45:42,885 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-11 08:45:42,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 08:45:42,908 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 08:45:42,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:42,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:42,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 08:45:42,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 08:45:42,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071389659] [2021-03-11 08:45:42,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 08:45:42,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 08:45:42,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384835277] [2021-03-11 08:45:42,912 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 08:45:42,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 08:45:42,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 08:45:42,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-11 08:45:42,913 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-03-11 08:45:42,913 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 976 places, 4068 transitions, 48705 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:45:42,913 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 08:45:42,913 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-03-11 08:45:42,913 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 08:45:51,775 INFO L129 PetriNetUnfolder]: 6016/12255 cut-off events. [2021-03-11 08:45:51,776 INFO L130 PetriNetUnfolder]: For 263434/266998 co-relation queries the response was YES. [2021-03-11 08:45:51,993 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88986 conditions, 12255 events. 6016/12255 cut-off events. For 263434/266998 co-relation queries the response was YES. Maximal size of possible extension queue 602. Compared 108056 event pairs, 282 based on Foata normal form. 703/12915 useless extension candidates. Maximal degree in co-relation 88607. Up to 8038 conditions per place. [2021-03-11 08:45:52,061 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 3612 selfloop transitions, 1334 changer transitions 12/4979 dead transitions. [2021-03-11 08:45:52,061 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1052 places, 4979 transitions, 73087 flow [2021-03-11 08:45:52,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-03-11 08:45:52,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-03-11 08:45:52,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 2479 transitions. [2021-03-11 08:45:52,064 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6801097393689987 [2021-03-11 08:45:52,064 INFO L72 ComplementDD]: Start complementDD. Operand 81 states and 2479 transitions. [2021-03-11 08:45:52,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 81 states and 2479 transitions. [2021-03-11 08:45:52,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 08:45:52,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 81 states and 2479 transitions. [2021-03-11 08:45:52,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 82 states, 81 states have (on average 30.604938271604937) internal successors, (2479), 81 states have internal predecessors, (2479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:45:52,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 82 states, 82 states have (on average 45.0) internal successors, (3690), 82 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:45:52,069 INFO L81 ComplementDD]: Finished complementDD. Result has 82 states, 82 states have (on average 45.0) internal successors, (3690), 82 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:45:52,069 INFO L185 Difference]: Start difference. First operand has 976 places, 4068 transitions, 48705 flow. Second operand 81 states and 2479 transitions. [2021-03-11 08:45:52,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1052 places, 4979 transitions, 73087 flow [2021-03-11 08:45:56,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1047 places, 4979 transitions, 68965 flow, removed 1961 selfloop flow, removed 5 redundant places. [2021-03-11 08:45:56,300 INFO L241 Difference]: Finished difference. Result has 1085 places, 4833 transitions, 61577 flow [2021-03-11 08:45:56,303 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=44791, PETRI_DIFFERENCE_MINUEND_PLACES=967, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4068, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=719, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=81, PETRI_FLOW=61577, PETRI_PLACES=1085, PETRI_TRANSITIONS=4833} [2021-03-11 08:45:56,303 INFO L335 CegarLoopForPetriNet]: 52 programPoint places, 1033 predicate places. [2021-03-11 08:45:56,303 INFO L480 AbstractCegarLoop]: Abstraction has has 1085 places, 4833 transitions, 61577 flow [2021-03-11 08:45:56,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:45:56,303 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 08:45:56,303 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 08:45:56,303 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-11 08:45:56,304 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 08:45:56,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 08:45:56,304 INFO L82 PathProgramCache]: Analyzing trace with hash -406520248, now seen corresponding path program 17 times [2021-03-11 08:45:56,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 08:45:56,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316349590] [2021-03-11 08:45:56,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 08:45:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 08:45:56,318 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-11 08:45:56,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 08:45:56,322 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:45:56,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:45:56,327 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:45:56,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:45:56,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:56,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:45:56,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:56,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:56,355 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:56,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:56,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:56,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:56,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:56,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:56,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:56,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:56,398 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:56,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:56,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:56,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:56,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:56,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:45:56,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:56,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:56,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:56,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:45:56,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:56,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:45:56,480 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-11 08:45:56,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 08:45:56,498 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 08:45:56,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:45:56,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:45:56,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 08:45:56,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 08:45:56,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316349590] [2021-03-11 08:45:56,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 08:45:56,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-03-11 08:45:56,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884210255] [2021-03-11 08:45:56,501 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-11 08:45:56,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 08:45:56,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-11 08:45:56,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-03-11 08:45:56,502 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-03-11 08:45:56,502 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1085 places, 4833 transitions, 61577 flow. Second operand has 16 states, 16 states have (on average 27.125) internal successors, (434), 16 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:45:56,502 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 08:45:56,502 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-03-11 08:45:56,502 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 08:46:05,459 INFO L129 PetriNetUnfolder]: 6113/12574 cut-off events. [2021-03-11 08:46:05,459 INFO L130 PetriNetUnfolder]: For 288347/293505 co-relation queries the response was YES. [2021-03-11 08:46:05,679 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94626 conditions, 12574 events. 6113/12574 cut-off events. For 288347/293505 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 112209 event pairs, 341 based on Foata normal form. 620/13153 useless extension candidates. Maximal degree in co-relation 94209. Up to 8864 conditions per place. [2021-03-11 08:46:05,738 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 4360 selfloop transitions, 602 changer transitions 4/4987 dead transitions. [2021-03-11 08:46:05,739 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1137 places, 4987 transitions, 76439 flow [2021-03-11 08:46:05,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-03-11 08:46:05,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-03-11 08:46:05,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 1683 transitions. [2021-03-11 08:46:05,740 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6678571428571428 [2021-03-11 08:46:05,740 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 1683 transitions. [2021-03-11 08:46:05,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 1683 transitions. [2021-03-11 08:46:05,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 08:46:05,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 1683 transitions. [2021-03-11 08:46:05,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 30.053571428571427) internal successors, (1683), 56 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:46:05,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 45.0) internal successors, (2565), 57 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:46:05,744 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 45.0) internal successors, (2565), 57 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:46:05,744 INFO L185 Difference]: Start difference. First operand has 1085 places, 4833 transitions, 61577 flow. Second operand 56 states and 1683 transitions. [2021-03-11 08:46:05,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1137 places, 4987 transitions, 76439 flow [2021-03-11 08:46:10,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1131 places, 4987 transitions, 72141 flow, removed 2060 selfloop flow, removed 6 redundant places. [2021-03-11 08:46:10,969 INFO L241 Difference]: Finished difference. Result has 1143 places, 4938 transitions, 61967 flow [2021-03-11 08:46:10,972 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=57301, PETRI_DIFFERENCE_MINUEND_PLACES=1076, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4833, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=513, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=61967, PETRI_PLACES=1143, PETRI_TRANSITIONS=4938} [2021-03-11 08:46:10,973 INFO L335 CegarLoopForPetriNet]: 52 programPoint places, 1091 predicate places. [2021-03-11 08:46:10,973 INFO L480 AbstractCegarLoop]: Abstraction has has 1143 places, 4938 transitions, 61967 flow [2021-03-11 08:46:10,973 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 27.125) internal successors, (434), 16 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:46:10,973 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 08:46:10,973 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 08:46:10,973 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-11 08:46:10,973 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 08:46:10,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 08:46:10,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1646044542, now seen corresponding path program 18 times [2021-03-11 08:46:10,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 08:46:10,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337588308] [2021-03-11 08:46:10,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 08:46:10,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 08:46:10,987 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-11 08:46:10,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 08:46:10,991 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:46:10,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:46:10,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:10,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:46:11,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:11,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:46:11,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:11,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:46:11,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:11,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:46:11,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:11,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:46:11,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:11,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:46:11,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:11,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:46:11,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:11,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:46:11,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:11,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:46:11,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:11,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:46:11,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:11,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:46:11,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:11,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:46:11,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:11,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:46:11,192 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-11 08:46:11,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 08:46:11,214 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 08:46:11,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:46:11,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:11,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 08:46:11,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 08:46:11,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337588308] [2021-03-11 08:46:11,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 08:46:11,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 08:46:11,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625244047] [2021-03-11 08:46:11,217 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 08:46:11,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 08:46:11,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 08:46:11,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-11 08:46:11,218 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-03-11 08:46:11,218 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1143 places, 4938 transitions, 61967 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:46:11,218 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 08:46:11,218 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-03-11 08:46:11,218 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 08:46:22,339 INFO L129 PetriNetUnfolder]: 6744/13874 cut-off events. [2021-03-11 08:46:22,339 INFO L130 PetriNetUnfolder]: For 372718/378562 co-relation queries the response was YES. [2021-03-11 08:46:22,589 INFO L84 FinitePrefix]: Finished finitePrefix Result has 108802 conditions, 13874 events. 6744/13874 cut-off events. For 372718/378562 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 125755 event pairs, 372 based on Foata normal form. 1188/15017 useless extension candidates. Maximal degree in co-relation 108375. Up to 9017 conditions per place. [2021-03-11 08:46:22,657 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 4269 selfloop transitions, 1323 changer transitions 8/5621 dead transitions. [2021-03-11 08:46:22,657 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1230 places, 5621 transitions, 90420 flow [2021-03-11 08:46:22,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-03-11 08:46:22,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2021-03-11 08:46:22,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 2759 transitions. [2021-03-11 08:46:22,659 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6737484737484738 [2021-03-11 08:46:22,659 INFO L72 ComplementDD]: Start complementDD. Operand 91 states and 2759 transitions. [2021-03-11 08:46:22,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 91 states and 2759 transitions. [2021-03-11 08:46:22,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 08:46:22,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 91 states and 2759 transitions. [2021-03-11 08:46:22,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 92 states, 91 states have (on average 30.318681318681318) internal successors, (2759), 91 states have internal predecessors, (2759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:46:22,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 92 states, 92 states have (on average 45.0) internal successors, (4140), 92 states have internal predecessors, (4140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:46:22,664 INFO L81 ComplementDD]: Finished complementDD. Result has 92 states, 92 states have (on average 45.0) internal successors, (4140), 92 states have internal predecessors, (4140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:46:22,665 INFO L185 Difference]: Start difference. First operand has 1143 places, 4938 transitions, 61967 flow. Second operand 91 states and 2759 transitions. [2021-03-11 08:46:22,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1230 places, 5621 transitions, 90420 flow [2021-03-11 08:46:28,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1222 places, 5621 transitions, 87688 flow, removed 1170 selfloop flow, removed 8 redundant places. [2021-03-11 08:46:28,834 INFO L241 Difference]: Finished difference. Result has 1244 places, 5539 transitions, 79079 flow [2021-03-11 08:46:28,837 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=59302, PETRI_DIFFERENCE_MINUEND_PLACES=1132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4938, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=808, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3993, PETRI_DIFFERENCE_SUBTRAHEND_STATES=91, PETRI_FLOW=79079, PETRI_PLACES=1244, PETRI_TRANSITIONS=5539} [2021-03-11 08:46:28,837 INFO L335 CegarLoopForPetriNet]: 52 programPoint places, 1192 predicate places. [2021-03-11 08:46:28,837 INFO L480 AbstractCegarLoop]: Abstraction has has 1244 places, 5539 transitions, 79079 flow [2021-03-11 08:46:28,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:46:28,838 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 08:46:28,838 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 08:46:28,838 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-11 08:46:28,838 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 08:46:28,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 08:46:28,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1612063476, now seen corresponding path program 19 times [2021-03-11 08:46:28,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 08:46:28,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489785429] [2021-03-11 08:46:28,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 08:46:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 08:46:28,854 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-11 08:46:28,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 08:46:28,858 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:46:28,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:46:28,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:28,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:46:28,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:28,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:46:28,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:28,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:46:28,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:28,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:46:28,903 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:28,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:46:28,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:28,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:46:28,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:28,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:46:28,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:28,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:46:28,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:28,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:46:28,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:28,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:46:28,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:28,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:46:29,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:29,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:46:29,033 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:29,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:46:29,054 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-11 08:46:29,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 08:46:29,076 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 08:46:29,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:46:29,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:29,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 08:46:29,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 08:46:29,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489785429] [2021-03-11 08:46:29,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 08:46:29,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 08:46:29,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85903500] [2021-03-11 08:46:29,079 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 08:46:29,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 08:46:29,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 08:46:29,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-11 08:46:29,080 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-03-11 08:46:29,080 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1244 places, 5539 transitions, 79079 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:46:29,080 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 08:46:29,080 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-03-11 08:46:29,080 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 08:46:41,842 INFO L129 PetriNetUnfolder]: 7091/14520 cut-off events. [2021-03-11 08:46:41,842 INFO L130 PetriNetUnfolder]: For 487076/493670 co-relation queries the response was YES. [2021-03-11 08:46:42,133 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123783 conditions, 14520 events. 7091/14520 cut-off events. For 487076/493670 co-relation queries the response was YES. Maximal size of possible extension queue 731. Compared 132190 event pairs, 383 based on Foata normal form. 965/15433 useless extension candidates. Maximal degree in co-relation 123336. Up to 10102 conditions per place. [2021-03-11 08:46:42,209 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 5006 selfloop transitions, 826 changer transitions 4/5857 dead transitions. [2021-03-11 08:46:42,209 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1317 places, 5857 transitions, 103644 flow [2021-03-11 08:46:42,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-03-11 08:46:42,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-03-11 08:46:42,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 2413 transitions. [2021-03-11 08:46:42,211 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6702777777777778 [2021-03-11 08:46:42,212 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 2413 transitions. [2021-03-11 08:46:42,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 2413 transitions. [2021-03-11 08:46:42,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 08:46:42,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 2413 transitions. [2021-03-11 08:46:42,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 30.1625) internal successors, (2413), 80 states have internal predecessors, (2413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:46:42,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 45.0) internal successors, (3645), 81 states have internal predecessors, (3645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:46:42,216 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 45.0) internal successors, (3645), 81 states have internal predecessors, (3645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:46:42,216 INFO L185 Difference]: Start difference. First operand has 1244 places, 5539 transitions, 79079 flow. Second operand 80 states and 2413 transitions. [2021-03-11 08:46:42,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1317 places, 5857 transitions, 103644 flow [2021-03-11 08:46:51,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1310 places, 5857 transitions, 94005 flow, removed 4755 selfloop flow, removed 7 redundant places. [2021-03-11 08:46:51,912 INFO L241 Difference]: Finished difference. Result has 1315 places, 5837 transitions, 83939 flow [2021-03-11 08:46:51,915 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=70286, PETRI_DIFFERENCE_MINUEND_PLACES=1231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=584, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4937, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=83939, PETRI_PLACES=1315, PETRI_TRANSITIONS=5837} [2021-03-11 08:46:51,915 INFO L335 CegarLoopForPetriNet]: 52 programPoint places, 1263 predicate places. [2021-03-11 08:46:51,915 INFO L480 AbstractCegarLoop]: Abstraction has has 1315 places, 5837 transitions, 83939 flow [2021-03-11 08:46:51,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:46:51,915 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 08:46:51,916 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 08:46:51,916 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-11 08:46:51,916 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 08:46:51,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 08:46:51,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1458000232, now seen corresponding path program 20 times [2021-03-11 08:46:51,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 08:46:51,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308647164] [2021-03-11 08:46:51,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 08:46:51,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 08:46:51,929 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-11 08:46:51,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 08:46:51,933 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:46:51,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:46:51,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:51,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:46:51,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:51,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:46:51,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:51,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:46:51,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:51,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:46:51,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:51,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:46:51,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:51,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:46:52,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:52,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:46:52,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:52,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:46:52,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:52,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:46:52,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:52,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:46:52,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:52,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:46:52,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:52,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:46:52,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:52,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:46:52,129 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-11 08:46:52,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 08:46:52,150 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 08:46:52,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:46:52,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:46:52,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 08:46:52,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 08:46:52,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308647164] [2021-03-11 08:46:52,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 08:46:52,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 08:46:52,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749587423] [2021-03-11 08:46:52,153 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 08:46:52,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 08:46:52,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 08:46:52,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-11 08:46:52,154 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-03-11 08:46:52,154 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1315 places, 5837 transitions, 83939 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:46:52,154 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 08:46:52,154 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-03-11 08:46:52,154 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 08:47:06,200 INFO L129 PetriNetUnfolder]: 7769/15751 cut-off events. [2021-03-11 08:47:06,200 INFO L130 PetriNetUnfolder]: For 541448/547976 co-relation queries the response was YES. [2021-03-11 08:47:06,529 INFO L84 FinitePrefix]: Finished finitePrefix Result has 137449 conditions, 15751 events. 7769/15751 cut-off events. For 541448/547976 co-relation queries the response was YES. Maximal size of possible extension queue 833. Compared 144145 event pairs, 271 based on Foata normal form. 1580/17287 useless extension candidates. Maximal degree in co-relation 136998. Up to 10036 conditions per place. [2021-03-11 08:47:06,613 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 4570 selfloop transitions, 1986 changer transitions 10/6587 dead transitions. [2021-03-11 08:47:06,613 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1390 places, 6587 transitions, 120693 flow [2021-03-11 08:47:06,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-03-11 08:47:06,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-03-11 08:47:06,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 2417 transitions. [2021-03-11 08:47:06,615 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.679887482419128 [2021-03-11 08:47:06,615 INFO L72 ComplementDD]: Start complementDD. Operand 79 states and 2417 transitions. [2021-03-11 08:47:06,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 2417 transitions. [2021-03-11 08:47:06,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 08:47:06,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 79 states and 2417 transitions. [2021-03-11 08:47:06,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 80 states, 79 states have (on average 30.59493670886076) internal successors, (2417), 79 states have internal predecessors, (2417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:47:06,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 80 states, 80 states have (on average 45.0) internal successors, (3600), 80 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:47:06,620 INFO L81 ComplementDD]: Finished complementDD. Result has 80 states, 80 states have (on average 45.0) internal successors, (3600), 80 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:47:06,620 INFO L185 Difference]: Start difference. First operand has 1315 places, 5837 transitions, 83939 flow. Second operand 79 states and 2417 transitions. [2021-03-11 08:47:06,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1390 places, 6587 transitions, 120693 flow [2021-03-11 08:47:16,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1379 places, 6587 transitions, 104422 flow, removed 7837 selfloop flow, removed 11 redundant places. [2021-03-11 08:47:16,504 INFO L241 Difference]: Finished difference. Result has 1414 places, 6407 transitions, 93955 flow [2021-03-11 08:47:16,508 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=73486, PETRI_DIFFERENCE_MINUEND_PLACES=1301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5837, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1478, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=93955, PETRI_PLACES=1414, PETRI_TRANSITIONS=6407} [2021-03-11 08:47:16,508 INFO L335 CegarLoopForPetriNet]: 52 programPoint places, 1362 predicate places. [2021-03-11 08:47:16,509 INFO L480 AbstractCegarLoop]: Abstraction has has 1414 places, 6407 transitions, 93955 flow [2021-03-11 08:47:16,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:47:16,509 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 08:47:16,509 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 08:47:16,509 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-11 08:47:16,509 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 08:47:16,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 08:47:16,509 INFO L82 PathProgramCache]: Analyzing trace with hash 335544942, now seen corresponding path program 21 times [2021-03-11 08:47:16,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 08:47:16,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256699157] [2021-03-11 08:47:16,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 08:47:16,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 08:47:16,522 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-11 08:47:16,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 08:47:16,526 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:47:16,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:47:16,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:47:16,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:47:16,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:47:16,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:47:16,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:47:16,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:47:16,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:47:16,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:47:16,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:47:16,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:47:16,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:47:16,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:47:16,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:47:16,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:47:16,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:47:16,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:47:16,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:47:16,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:47:16,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:47:16,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:47:16,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:47:16,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:47:16,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:47:16,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:47:16,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:47:16,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:47:16,704 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-11 08:47:16,704 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 08:47:16,724 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 08:47:16,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:47:16,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:47:16,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 08:47:16,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 08:47:16,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256699157] [2021-03-11 08:47:16,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 08:47:16,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 08:47:16,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074205880] [2021-03-11 08:47:16,731 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 08:47:16,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 08:47:16,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 08:47:16,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 08:47:16,731 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-03-11 08:47:16,732 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1414 places, 6407 transitions, 93955 flow. Second operand has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:47:16,732 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 08:47:16,732 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-03-11 08:47:16,732 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 08:47:29,869 INFO L129 PetriNetUnfolder]: 7816/15910 cut-off events. [2021-03-11 08:47:29,869 INFO L130 PetriNetUnfolder]: For 503301/510308 co-relation queries the response was YES. [2021-03-11 08:47:30,223 INFO L84 FinitePrefix]: Finished finitePrefix Result has 133020 conditions, 15910 events. 7816/15910 cut-off events. For 503301/510308 co-relation queries the response was YES. Maximal size of possible extension queue 824. Compared 146592 event pairs, 312 based on Foata normal form. 938/16781 useless extension candidates. Maximal degree in co-relation 132535. Up to 11442 conditions per place. [2021-03-11 08:47:30,306 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 5717 selfloop transitions, 751 changer transitions 2/6491 dead transitions. [2021-03-11 08:47:30,306 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1443 places, 6491 transitions, 108746 flow [2021-03-11 08:47:30,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-11 08:47:30,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-03-11 08:47:30,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1086 transitions. [2021-03-11 08:47:30,308 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6703703703703704 [2021-03-11 08:47:30,308 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1086 transitions. [2021-03-11 08:47:30,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1086 transitions. [2021-03-11 08:47:30,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 08:47:30,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1086 transitions. [2021-03-11 08:47:30,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 30.166666666666668) internal successors, (1086), 36 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:47:30,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 45.0) internal successors, (1665), 37 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:47:30,310 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 45.0) internal successors, (1665), 37 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:47:30,310 INFO L185 Difference]: Start difference. First operand has 1414 places, 6407 transitions, 93955 flow. Second operand 36 states and 1086 transitions. [2021-03-11 08:47:30,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1443 places, 6491 transitions, 108746 flow [2021-03-11 08:47:42,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1432 places, 6491 transitions, 102670 flow, removed 2898 selfloop flow, removed 11 redundant places. [2021-03-11 08:47:42,406 INFO L241 Difference]: Finished difference. Result has 1437 places, 6470 transitions, 91003 flow [2021-03-11 08:47:42,410 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=87911, PETRI_DIFFERENCE_MINUEND_PLACES=1397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=695, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5706, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=91003, PETRI_PLACES=1437, PETRI_TRANSITIONS=6470} [2021-03-11 08:47:42,410 INFO L335 CegarLoopForPetriNet]: 52 programPoint places, 1385 predicate places. [2021-03-11 08:47:42,410 INFO L480 AbstractCegarLoop]: Abstraction has has 1437 places, 6470 transitions, 91003 flow [2021-03-11 08:47:42,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:47:42,410 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 08:47:42,410 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 08:47:42,411 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-11 08:47:42,411 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 08:47:42,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 08:47:42,411 INFO L82 PathProgramCache]: Analyzing trace with hash 401335546, now seen corresponding path program 22 times [2021-03-11 08:47:42,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 08:47:42,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407776584] [2021-03-11 08:47:42,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 08:47:42,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 08:47:42,423 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-11 08:47:42,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 08:47:42,427 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:47:42,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:47:42,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:47:42,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:47:42,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:47:42,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:47:42,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:47:42,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:47:42,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:47:42,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:47:42,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:47:42,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:47:42,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:47:42,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:47:42,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:47:42,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:47:42,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:47:42,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:47:42,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:47:42,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:47:42,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:47:42,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:47:42,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:47:42,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:47:42,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:47:42,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:47:42,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:47:42,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:47:42,629 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-11 08:47:42,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 08:47:42,649 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 08:47:42,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:47:42,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:47:42,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 08:47:42,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 08:47:42,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407776584] [2021-03-11 08:47:42,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 08:47:42,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 08:47:42,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999419349] [2021-03-11 08:47:42,652 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 08:47:42,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 08:47:42,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 08:47:42,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-11 08:47:42,653 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-03-11 08:47:42,653 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1437 places, 6470 transitions, 91003 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:47:42,653 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 08:47:42,653 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-03-11 08:47:42,653 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 08:47:50,150 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2021-03-11 08:47:57,032 INFO L129 PetriNetUnfolder]: 7978/16237 cut-off events. [2021-03-11 08:47:57,032 INFO L130 PetriNetUnfolder]: For 456843/462739 co-relation queries the response was YES. [2021-03-11 08:47:57,435 INFO L84 FinitePrefix]: Finished finitePrefix Result has 133524 conditions, 16237 events. 7978/16237 cut-off events. For 456843/462739 co-relation queries the response was YES. Maximal size of possible extension queue 845. Compared 149955 event pairs, 300 based on Foata normal form. 1332/17512 useless extension candidates. Maximal degree in co-relation 133037. Up to 11346 conditions per place. [2021-03-11 08:47:57,537 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 5588 selfloop transitions, 1108 changer transitions 2/6719 dead transitions. [2021-03-11 08:47:57,537 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1492 places, 6719 transitions, 111752 flow [2021-03-11 08:47:57,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-03-11 08:47:57,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-03-11 08:47:57,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 1747 transitions. [2021-03-11 08:47:57,547 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6693486590038314 [2021-03-11 08:47:57,547 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 1747 transitions. [2021-03-11 08:47:57,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 1747 transitions. [2021-03-11 08:47:57,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 08:47:57,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 1747 transitions. [2021-03-11 08:47:57,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 30.120689655172413) internal successors, (1747), 58 states have internal predecessors, (1747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:47:57,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 45.0) internal successors, (2655), 59 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:47:57,565 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 45.0) internal successors, (2655), 59 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:47:57,565 INFO L185 Difference]: Start difference. First operand has 1437 places, 6470 transitions, 91003 flow. Second operand 58 states and 1747 transitions. [2021-03-11 08:47:57,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1492 places, 6719 transitions, 111752 flow [2021-03-11 08:48:07,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1479 places, 6719 transitions, 109514 flow, removed 696 selfloop flow, removed 13 redundant places. [2021-03-11 08:48:07,228 INFO L241 Difference]: Finished difference. Result has 1489 places, 6647 transitions, 97049 flow [2021-03-11 08:48:07,232 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=88818, PETRI_DIFFERENCE_MINUEND_PLACES=1422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=958, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=97049, PETRI_PLACES=1489, PETRI_TRANSITIONS=6647} [2021-03-11 08:48:07,232 INFO L335 CegarLoopForPetriNet]: 52 programPoint places, 1437 predicate places. [2021-03-11 08:48:07,232 INFO L480 AbstractCegarLoop]: Abstraction has has 1489 places, 6647 transitions, 97049 flow [2021-03-11 08:48:07,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:48:07,233 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 08:48:07,233 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 08:48:07,233 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-11 08:48:07,233 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 08:48:07,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 08:48:07,233 INFO L82 PathProgramCache]: Analyzing trace with hash 79926160, now seen corresponding path program 23 times [2021-03-11 08:48:07,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 08:48:07,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827609692] [2021-03-11 08:48:07,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 08:48:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 08:48:07,246 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-11 08:48:07,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 08:48:07,250 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:48:07,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:48:07,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:48:07,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:48:07,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:48:07,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:48:07,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:48:07,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:48:07,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:48:07,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:48:07,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:48:07,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:48:07,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:48:07,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:48:07,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:48:07,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:48:07,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:48:07,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:48:07,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:48:07,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:48:07,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:48:07,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:48:07,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:48:07,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:48:07,415 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:48:07,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:48:07,435 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:48:07,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:48:07,457 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-11 08:48:07,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 08:48:07,480 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 08:48:07,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:48:07,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:48:07,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 08:48:07,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 08:48:07,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827609692] [2021-03-11 08:48:07,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 08:48:07,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 08:48:07,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387136532] [2021-03-11 08:48:07,483 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 08:48:07,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 08:48:07,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 08:48:07,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-11 08:48:07,484 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-03-11 08:48:07,484 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1489 places, 6647 transitions, 97049 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:48:07,484 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 08:48:07,484 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-03-11 08:48:07,484 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 08:48:21,630 INFO L129 PetriNetUnfolder]: 8055/16497 cut-off events. [2021-03-11 08:48:21,630 INFO L130 PetriNetUnfolder]: For 484436/490027 co-relation queries the response was YES. [2021-03-11 08:48:22,068 INFO L84 FinitePrefix]: Finished finitePrefix Result has 138671 conditions, 16497 events. 8055/16497 cut-off events. For 484436/490027 co-relation queries the response was YES. Maximal size of possible extension queue 849. Compared 153929 event pairs, 327 based on Foata normal form. 972/17416 useless extension candidates. Maximal degree in co-relation 138194. Up to 11677 conditions per place. [2021-03-11 08:48:22,174 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 5880 selfloop transitions, 880 changer transitions 2/6783 dead transitions. [2021-03-11 08:48:22,174 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1527 places, 6783 transitions, 115549 flow [2021-03-11 08:48:22,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-03-11 08:48:22,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-03-11 08:48:22,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 1227 transitions. [2021-03-11 08:48:22,176 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6650406504065041 [2021-03-11 08:48:22,176 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 1227 transitions. [2021-03-11 08:48:22,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 1227 transitions. [2021-03-11 08:48:22,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 08:48:22,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 1227 transitions. [2021-03-11 08:48:22,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 29.926829268292682) internal successors, (1227), 41 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:48:22,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 45.0) internal successors, (1890), 42 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:48:22,179 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 45.0) internal successors, (1890), 42 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:48:22,179 INFO L185 Difference]: Start difference. First operand has 1489 places, 6647 transitions, 97049 flow. Second operand 41 states and 1227 transitions. [2021-03-11 08:48:22,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1527 places, 6783 transitions, 115549 flow [2021-03-11 08:48:33,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1520 places, 6783 transitions, 111078 flow, removed 2078 selfloop flow, removed 7 redundant places. [2021-03-11 08:48:33,866 INFO L241 Difference]: Finished difference. Result has 1528 places, 6740 transitions, 98516 flow [2021-03-11 08:48:33,871 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=93290, PETRI_DIFFERENCE_MINUEND_PLACES=1480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=803, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5810, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=98516, PETRI_PLACES=1528, PETRI_TRANSITIONS=6740} [2021-03-11 08:48:33,871 INFO L335 CegarLoopForPetriNet]: 52 programPoint places, 1476 predicate places. [2021-03-11 08:48:33,871 INFO L480 AbstractCegarLoop]: Abstraction has has 1528 places, 6740 transitions, 98516 flow [2021-03-11 08:48:33,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:48:33,871 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 08:48:33,871 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 08:48:33,871 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-11 08:48:33,871 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 08:48:33,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 08:48:33,872 INFO L82 PathProgramCache]: Analyzing trace with hash -418983530, now seen corresponding path program 24 times [2021-03-11 08:48:33,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 08:48:33,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173859384] [2021-03-11 08:48:33,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 08:48:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 08:48:33,884 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-11 08:48:33,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 08:48:33,888 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:48:33,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:48:33,893 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:48:33,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:48:33,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:48:33,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:48:33,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:48:33,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:48:33,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:48:33,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:48:33,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:48:33,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:48:33,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:48:33,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:48:33,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:48:33,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:48:33,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:48:33,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:48:33,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:48:33,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:48:34,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:48:34,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:48:34,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:48:34,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:48:34,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:48:34,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:48:34,066 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:48:34,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:48:34,086 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-11 08:48:34,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 08:48:34,108 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 08:48:34,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:48:34,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:48:34,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 08:48:34,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 08:48:34,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173859384] [2021-03-11 08:48:34,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 08:48:34,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 08:48:34,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763717471] [2021-03-11 08:48:34,111 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 08:48:34,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 08:48:34,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 08:48:34,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-11 08:48:34,112 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-03-11 08:48:34,112 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1528 places, 6740 transitions, 98516 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:48:34,112 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 08:48:34,112 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-03-11 08:48:34,112 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 08:48:48,973 INFO L129 PetriNetUnfolder]: 8165/16800 cut-off events. [2021-03-11 08:48:48,973 INFO L130 PetriNetUnfolder]: For 527485/534470 co-relation queries the response was YES. [2021-03-11 08:48:49,366 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142827 conditions, 16800 events. 8165/16800 cut-off events. For 527485/534470 co-relation queries the response was YES. Maximal size of possible extension queue 859. Compared 157658 event pairs, 313 based on Foata normal form. 806/17544 useless extension candidates. Maximal degree in co-relation 142322. Up to 12027 conditions per place. [2021-03-11 08:48:49,454 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 6165 selfloop transitions, 706 changer transitions 4/6896 dead transitions. [2021-03-11 08:48:49,454 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1575 places, 6896 transitions, 118421 flow [2021-03-11 08:48:49,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-03-11 08:48:49,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-03-11 08:48:49,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 1487 transitions. [2021-03-11 08:48:49,456 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6608888888888889 [2021-03-11 08:48:49,456 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 1487 transitions. [2021-03-11 08:48:49,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 1487 transitions. [2021-03-11 08:48:49,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 08:48:49,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 1487 transitions. [2021-03-11 08:48:49,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 29.74) internal successors, (1487), 50 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:48:49,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 45.0) internal successors, (2295), 51 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:48:49,458 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 45.0) internal successors, (2295), 51 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:48:49,458 INFO L185 Difference]: Start difference. First operand has 1528 places, 6740 transitions, 98516 flow. Second operand 50 states and 1487 transitions. [2021-03-11 08:48:49,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1575 places, 6896 transitions, 118421 flow [2021-03-11 08:49:01,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1566 places, 6896 transitions, 115250 flow, removed 1237 selfloop flow, removed 9 redundant places. [2021-03-11 08:49:01,399 INFO L241 Difference]: Finished difference. Result has 1577 places, 6867 transitions, 102308 flow [2021-03-11 08:49:01,403 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=95361, PETRI_DIFFERENCE_MINUEND_PLACES=1517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6740, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=595, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=102308, PETRI_PLACES=1577, PETRI_TRANSITIONS=6867} [2021-03-11 08:49:01,403 INFO L335 CegarLoopForPetriNet]: 52 programPoint places, 1525 predicate places. [2021-03-11 08:49:01,403 INFO L480 AbstractCegarLoop]: Abstraction has has 1577 places, 6867 transitions, 102308 flow [2021-03-11 08:49:01,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:49:01,403 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 08:49:01,403 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 08:49:01,403 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-11 08:49:01,403 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 08:49:01,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 08:49:01,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1758581254, now seen corresponding path program 25 times [2021-03-11 08:49:01,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 08:49:01,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388526730] [2021-03-11 08:49:01,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 08:49:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 08:49:01,418 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-11 08:49:01,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 08:49:01,422 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:49:01,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:49:01,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:49:01,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:49:01,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:49:01,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:49:01,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:49:01,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:49:01,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:49:01,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:49:01,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:49:01,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:49:01,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:49:01,484 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:49:01,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:49:01,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:49:01,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:49:01,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:49:01,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:49:01,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:49:01,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:49:01,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:49:01,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:49:01,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:49:01,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:49:01,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:49:01,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:49:01,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:49:01,621 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-11 08:49:01,621 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 08:49:01,647 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 08:49:01,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:49:01,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:49:01,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 08:49:01,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 08:49:01,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388526730] [2021-03-11 08:49:01,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 08:49:01,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 08:49:01,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460074444] [2021-03-11 08:49:01,650 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 08:49:01,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 08:49:01,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 08:49:01,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-11 08:49:01,651 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-03-11 08:49:01,651 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1577 places, 6867 transitions, 102308 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:49:01,651 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 08:49:01,651 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-03-11 08:49:01,651 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 08:49:19,675 INFO L129 PetriNetUnfolder]: 8837/18096 cut-off events. [2021-03-11 08:49:19,675 INFO L130 PetriNetUnfolder]: For 583774/589694 co-relation queries the response was YES. [2021-03-11 08:49:20,128 INFO L84 FinitePrefix]: Finished finitePrefix Result has 159090 conditions, 18096 events. 8837/18096 cut-off events. For 583774/589694 co-relation queries the response was YES. Maximal size of possible extension queue 960. Compared 171321 event pairs, 312 based on Foata normal form. 1568/19609 useless extension candidates. Maximal degree in co-relation 158591. Up to 12572 conditions per place. [2021-03-11 08:49:20,226 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 6270 selfloop transitions, 1387 changer transitions 6/7684 dead transitions. [2021-03-11 08:49:20,226 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1667 places, 7684 transitions, 138624 flow [2021-03-11 08:49:20,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-03-11 08:49:20,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2021-03-11 08:49:20,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 2808 transitions. [2021-03-11 08:49:20,229 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6638297872340425 [2021-03-11 08:49:20,229 INFO L72 ComplementDD]: Start complementDD. Operand 94 states and 2808 transitions. [2021-03-11 08:49:20,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 94 states and 2808 transitions. [2021-03-11 08:49:20,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 08:49:20,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 94 states and 2808 transitions. [2021-03-11 08:49:20,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 95 states, 94 states have (on average 29.872340425531913) internal successors, (2808), 94 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:49:20,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 95 states, 95 states have (on average 45.0) internal successors, (4275), 95 states have internal predecessors, (4275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:49:20,233 INFO L81 ComplementDD]: Finished complementDD. Result has 95 states, 95 states have (on average 45.0) internal successors, (4275), 95 states have internal predecessors, (4275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:49:20,233 INFO L185 Difference]: Start difference. First operand has 1577 places, 6867 transitions, 102308 flow. Second operand 94 states and 2808 transitions. [2021-03-11 08:49:20,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1667 places, 7684 transitions, 138624 flow [2021-03-11 08:49:34,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1657 places, 7684 transitions, 133870 flow, removed 2130 selfloop flow, removed 10 redundant places. [2021-03-11 08:49:34,837 INFO L241 Difference]: Finished difference. Result has 1687 places, 7587 transitions, 121238 flow [2021-03-11 08:49:34,841 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=97701, PETRI_DIFFERENCE_MINUEND_PLACES=1564, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6867, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=771, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5774, PETRI_DIFFERENCE_SUBTRAHEND_STATES=94, PETRI_FLOW=121238, PETRI_PLACES=1687, PETRI_TRANSITIONS=7587} [2021-03-11 08:49:34,841 INFO L335 CegarLoopForPetriNet]: 52 programPoint places, 1635 predicate places. [2021-03-11 08:49:34,841 INFO L480 AbstractCegarLoop]: Abstraction has has 1687 places, 7587 transitions, 121238 flow [2021-03-11 08:49:34,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:49:34,841 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 08:49:34,841 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 08:49:34,842 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-11 08:49:34,842 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 08:49:34,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 08:49:34,842 INFO L82 PathProgramCache]: Analyzing trace with hash -540417164, now seen corresponding path program 26 times [2021-03-11 08:49:34,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 08:49:34,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434403121] [2021-03-11 08:49:34,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 08:49:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 08:49:34,854 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-11 08:49:34,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 08:49:34,858 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:49:34,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:49:34,864 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:49:34,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:49:34,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:49:34,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:49:34,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:49:34,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:49:34,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:49:34,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:49:34,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:49:34,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:49:34,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:49:34,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:49:34,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:49:34,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:49:34,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:49:34,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:49:34,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:49:34,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:49:34,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:49:34,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:49:34,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:49:34,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:49:34,993 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:49:34,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:49:35,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:49:35,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:49:35,030 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-11 08:49:35,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 08:49:35,051 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 08:49:35,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:49:35,053 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:49:35,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 08:49:35,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 08:49:35,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434403121] [2021-03-11 08:49:35,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 08:49:35,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 08:49:35,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477385823] [2021-03-11 08:49:35,054 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 08:49:35,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 08:49:35,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 08:49:35,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 08:49:35,054 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-03-11 08:49:35,054 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1687 places, 7587 transitions, 121238 flow. Second operand has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:49:35,055 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 08:49:35,055 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-03-11 08:49:35,055 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 08:49:44,032 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 22 [2021-03-11 08:49:52,414 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2021-03-11 08:49:55,475 INFO L129 PetriNetUnfolder]: 8991/18477 cut-off events. [2021-03-11 08:49:55,475 INFO L130 PetriNetUnfolder]: For 650320/656667 co-relation queries the response was YES. [2021-03-11 08:49:56,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 167257 conditions, 18477 events. 8991/18477 cut-off events. For 650320/656667 co-relation queries the response was YES. Maximal size of possible extension queue 964. Compared 176149 event pairs, 361 based on Foata normal form. 799/19211 useless extension candidates. Maximal degree in co-relation 166730. Up to 13225 conditions per place. [2021-03-11 08:49:56,211 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 6930 selfloop transitions, 838 changer transitions 4/7793 dead transitions. [2021-03-11 08:49:56,211 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1761 places, 7793 transitions, 145673 flow [2021-03-11 08:49:56,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-03-11 08:49:56,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-03-11 08:49:56,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 2370 transitions. [2021-03-11 08:49:56,213 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2021-03-11 08:49:56,213 INFO L72 ComplementDD]: Start complementDD. Operand 79 states and 2370 transitions. [2021-03-11 08:49:56,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 2370 transitions. [2021-03-11 08:49:56,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 08:49:56,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 79 states and 2370 transitions. [2021-03-11 08:49:56,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 80 states, 79 states have (on average 30.0) internal successors, (2370), 79 states have internal predecessors, (2370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:49:56,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 80 states, 80 states have (on average 45.0) internal successors, (3600), 80 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:49:56,217 INFO L81 ComplementDD]: Finished complementDD. Result has 80 states, 80 states have (on average 45.0) internal successors, (3600), 80 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:49:56,217 INFO L185 Difference]: Start difference. First operand has 1687 places, 7587 transitions, 121238 flow. Second operand 79 states and 2370 transitions. [2021-03-11 08:49:56,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1761 places, 7793 transitions, 145673 flow [2021-03-11 08:50:10,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1757 places, 7793 transitions, 136637 flow, removed 4442 selfloop flow, removed 4 redundant places. [2021-03-11 08:50:10,300 INFO L241 Difference]: Finished difference. Result has 1772 places, 7752 transitions, 121603 flow [2021-03-11 08:50:10,303 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=112208, PETRI_DIFFERENCE_MINUEND_PLACES=1679, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=695, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6873, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=121603, PETRI_PLACES=1772, PETRI_TRANSITIONS=7752} [2021-03-11 08:50:10,303 INFO L335 CegarLoopForPetriNet]: 52 programPoint places, 1720 predicate places. [2021-03-11 08:50:10,303 INFO L480 AbstractCegarLoop]: Abstraction has has 1772 places, 7752 transitions, 121603 flow [2021-03-11 08:50:10,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:50:10,303 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 08:50:10,304 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 08:50:10,304 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-11 08:50:10,304 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 08:50:10,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 08:50:10,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1171364306, now seen corresponding path program 27 times [2021-03-11 08:50:10,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 08:50:10,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602003121] [2021-03-11 08:50:10,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 08:50:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 08:50:10,316 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-11 08:50:10,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 08:50:10,320 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:50:10,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:50:10,326 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:50:10,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:50:10,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:50:10,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:50:10,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:50:10,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:50:10,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:50:10,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:50:10,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:50:10,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:50:10,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:50:10,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:50:10,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:50:10,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:50:10,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:50:10,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:50:10,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:50:10,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:50:10,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:50:10,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:50:10,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:50:10,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:50:10,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:50:10,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:50:10,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:50:10,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:50:10,502 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-11 08:50:10,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 08:50:10,523 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 08:50:10,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:50:10,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:50:10,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 08:50:10,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 08:50:10,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602003121] [2021-03-11 08:50:10,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 08:50:10,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 08:50:10,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140795108] [2021-03-11 08:50:10,526 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 08:50:10,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 08:50:10,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 08:50:10,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 08:50:10,527 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-03-11 08:50:10,527 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1772 places, 7752 transitions, 121603 flow. Second operand has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:50:10,527 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 08:50:10,527 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-03-11 08:50:10,527 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 08:50:30,981 INFO L129 PetriNetUnfolder]: 9158/18880 cut-off events. [2021-03-11 08:50:30,981 INFO L130 PetriNetUnfolder]: For 722077/729416 co-relation queries the response was YES. [2021-03-11 08:50:31,694 INFO L84 FinitePrefix]: Finished finitePrefix Result has 170838 conditions, 18880 events. 9158/18880 cut-off events. For 722077/729416 co-relation queries the response was YES. Maximal size of possible extension queue 982. Compared 180992 event pairs, 325 based on Foata normal form. 666/19490 useless extension candidates. Maximal degree in co-relation 170291. Up to 13593 conditions per place. [2021-03-11 08:50:31,800 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 7296 selfloop transitions, 618 changer transitions 3/7938 dead transitions. [2021-03-11 08:50:31,801 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1814 places, 7938 transitions, 145374 flow [2021-03-11 08:50:31,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-03-11 08:50:31,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-03-11 08:50:31,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 1384 transitions. [2021-03-11 08:50:31,802 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6685990338164252 [2021-03-11 08:50:31,802 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 1384 transitions. [2021-03-11 08:50:31,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 1384 transitions. [2021-03-11 08:50:31,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 08:50:31,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 1384 transitions. [2021-03-11 08:50:31,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 30.08695652173913) internal successors, (1384), 46 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:50:31,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 45.0) internal successors, (2115), 47 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:50:31,804 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 45.0) internal successors, (2115), 47 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:50:31,804 INFO L185 Difference]: Start difference. First operand has 1772 places, 7752 transitions, 121603 flow. Second operand 46 states and 1384 transitions. [2021-03-11 08:50:31,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1814 places, 7938 transitions, 145374 flow [2021-03-11 08:50:51,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1798 places, 7938 transitions, 139277 flow, removed 2768 selfloop flow, removed 16 redundant places. [2021-03-11 08:50:51,299 INFO L241 Difference]: Finished difference. Result has 1814 places, 7901 transitions, 123535 flow [2021-03-11 08:50:51,302 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=115516, PETRI_DIFFERENCE_MINUEND_PLACES=1753, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7752, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=486, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=123535, PETRI_PLACES=1814, PETRI_TRANSITIONS=7901} [2021-03-11 08:50:51,302 INFO L335 CegarLoopForPetriNet]: 52 programPoint places, 1762 predicate places. [2021-03-11 08:50:51,302 INFO L480 AbstractCegarLoop]: Abstraction has has 1814 places, 7901 transitions, 123535 flow [2021-03-11 08:50:51,302 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:50:51,302 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 08:50:51,302 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 08:50:51,303 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-11 08:50:51,303 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 08:50:51,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 08:50:51,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1705661458, now seen corresponding path program 28 times [2021-03-11 08:50:51,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 08:50:51,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080507039] [2021-03-11 08:50:51,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 08:50:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 08:50:51,315 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-11 08:50:51,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 08:50:51,319 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:50:51,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:50:51,325 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:50:51,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:50:51,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:50:51,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:50:51,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:50:51,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:50:51,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:50:51,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:50:51,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:50:51,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:50:51,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:50:51,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:50:51,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:50:51,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:50:51,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:50:51,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:50:51,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:50:51,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:50:51,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:50:51,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:50:51,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:50:51,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:50:51,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:50:51,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:50:51,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:50:51,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:50:51,531 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-11 08:50:51,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 08:50:51,553 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 08:50:51,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:50:51,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:50:51,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 08:50:51,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 08:50:51,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080507039] [2021-03-11 08:50:51,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 08:50:51,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 08:50:51,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331162065] [2021-03-11 08:50:51,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 08:50:51,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 08:50:51,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 08:50:51,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-11 08:50:51,558 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-03-11 08:50:51,559 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1814 places, 7901 transitions, 123535 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:50:51,559 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 08:50:51,559 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-03-11 08:50:51,559 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 08:50:54,992 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2021-03-11 08:51:12,221 INFO L129 PetriNetUnfolder]: 9287/19284 cut-off events. [2021-03-11 08:51:12,222 INFO L130 PetriNetUnfolder]: For 784940/792463 co-relation queries the response was YES. [2021-03-11 08:51:12,936 INFO L84 FinitePrefix]: Finished finitePrefix Result has 175641 conditions, 19284 events. 9287/19284 cut-off events. For 784940/792463 co-relation queries the response was YES. Maximal size of possible extension queue 988. Compared 186530 event pairs, 354 based on Foata normal form. 705/19929 useless extension candidates. Maximal degree in co-relation 175080. Up to 13741 conditions per place. [2021-03-11 08:51:13,043 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 7330 selfloop transitions, 717 changer transitions 3/8071 dead transitions. [2021-03-11 08:51:13,044 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1850 places, 8071 transitions, 146881 flow [2021-03-11 08:51:13,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-03-11 08:51:13,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-03-11 08:51:13,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1178 transitions. [2021-03-11 08:51:13,045 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6712250712250712 [2021-03-11 08:51:13,045 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 1178 transitions. [2021-03-11 08:51:13,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 1178 transitions. [2021-03-11 08:51:13,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 08:51:13,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 1178 transitions. [2021-03-11 08:51:13,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 30.205128205128204) internal successors, (1178), 39 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:51:13,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 45.0) internal successors, (1800), 40 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:51:13,047 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 45.0) internal successors, (1800), 40 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:51:13,047 INFO L185 Difference]: Start difference. First operand has 1814 places, 7901 transitions, 123535 flow. Second operand 39 states and 1178 transitions. [2021-03-11 08:51:13,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1850 places, 8071 transitions, 146881 flow [2021-03-11 08:51:34,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1843 places, 8071 transitions, 140644 flow, removed 2896 selfloop flow, removed 7 redundant places. [2021-03-11 08:51:35,035 INFO L241 Difference]: Finished difference. Result has 1855 places, 8037 transitions, 124570 flow [2021-03-11 08:51:35,038 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=118142, PETRI_DIFFERENCE_MINUEND_PLACES=1805, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7901, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=597, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=124570, PETRI_PLACES=1855, PETRI_TRANSITIONS=8037} [2021-03-11 08:51:35,038 INFO L335 CegarLoopForPetriNet]: 52 programPoint places, 1803 predicate places. [2021-03-11 08:51:35,038 INFO L480 AbstractCegarLoop]: Abstraction has has 1855 places, 8037 transitions, 124570 flow [2021-03-11 08:51:35,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:51:35,038 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 08:51:35,039 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 08:51:35,039 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-11 08:51:35,039 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 08:51:35,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 08:51:35,039 INFO L82 PathProgramCache]: Analyzing trace with hash 505751612, now seen corresponding path program 29 times [2021-03-11 08:51:35,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 08:51:35,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208877895] [2021-03-11 08:51:35,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 08:51:35,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 08:51:35,063 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-11 08:51:35,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 08:51:35,068 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:51:35,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:51:35,073 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:51:35,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:51:35,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:51:35,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:51:35,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:51:35,090 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:51:35,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:51:35,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:51:35,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:51:35,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:51:35,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:51:35,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:51:35,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:51:35,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:51:35,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:51:35,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:51:35,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:51:35,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:51:35,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:51:35,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:51:35,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:51:35,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:51:35,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:51:35,230 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:51:35,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:51:35,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:51:35,269 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-11 08:51:35,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 08:51:35,290 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 08:51:35,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:51:35,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:51:35,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 08:51:35,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 08:51:35,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208877895] [2021-03-11 08:51:35,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 08:51:35,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 08:51:35,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856060545] [2021-03-11 08:51:35,293 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 08:51:35,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 08:51:35,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 08:51:35,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-11 08:51:35,294 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-03-11 08:51:35,294 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1855 places, 8037 transitions, 124570 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:51:35,294 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 08:51:35,294 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-03-11 08:51:35,294 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 08:51:50,223 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2021-03-11 08:51:56,886 INFO L129 PetriNetUnfolder]: 9432/19612 cut-off events. [2021-03-11 08:51:56,887 INFO L130 PetriNetUnfolder]: For 816053/823632 co-relation queries the response was YES. [2021-03-11 08:51:57,485 INFO L84 FinitePrefix]: Finished finitePrefix Result has 180368 conditions, 19612 events. 9432/19612 cut-off events. For 816053/823632 co-relation queries the response was YES. Maximal size of possible extension queue 1023. Compared 190558 event pairs, 367 based on Foata normal form. 1133/20691 useless extension candidates. Maximal degree in co-relation 179795. Up to 13927 conditions per place. [2021-03-11 08:51:57,706 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 7237 selfloop transitions, 996 changer transitions 2/8256 dead transitions. [2021-03-11 08:51:57,706 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1906 places, 8256 transitions, 151124 flow [2021-03-11 08:51:57,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-11 08:51:57,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-03-11 08:51:57,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 1625 transitions. [2021-03-11 08:51:57,708 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.668724279835391 [2021-03-11 08:51:57,708 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 1625 transitions. [2021-03-11 08:51:57,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 1625 transitions. [2021-03-11 08:51:57,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 08:51:57,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 1625 transitions. [2021-03-11 08:51:57,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 30.09259259259259) internal successors, (1625), 54 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:51:57,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 45.0) internal successors, (2475), 55 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:51:57,710 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 45.0) internal successors, (2475), 55 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:51:57,710 INFO L185 Difference]: Start difference. First operand has 1855 places, 8037 transitions, 124570 flow. Second operand 54 states and 1625 transitions. [2021-03-11 08:51:57,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1906 places, 8256 transitions, 151124 flow [2021-03-11 08:52:17,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1896 places, 8256 transitions, 147823 flow, removed 1314 selfloop flow, removed 10 redundant places. [2021-03-11 08:52:17,414 INFO L241 Difference]: Finished difference. Result has 1904 places, 8210 transitions, 132090 flow [2021-03-11 08:52:17,418 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=121309, PETRI_DIFFERENCE_MINUEND_PLACES=1843, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8037, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=841, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=132090, PETRI_PLACES=1904, PETRI_TRANSITIONS=8210} [2021-03-11 08:52:17,418 INFO L335 CegarLoopForPetriNet]: 52 programPoint places, 1852 predicate places. [2021-03-11 08:52:17,418 INFO L480 AbstractCegarLoop]: Abstraction has has 1904 places, 8210 transitions, 132090 flow [2021-03-11 08:52:17,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:52:17,418 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 08:52:17,418 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 08:52:17,418 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-11 08:52:17,418 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 08:52:17,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 08:52:17,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1278320190, now seen corresponding path program 30 times [2021-03-11 08:52:17,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 08:52:17,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333827651] [2021-03-11 08:52:17,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 08:52:17,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 08:52:17,429 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-11 08:52:17,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 08:52:17,434 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:52:17,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:52:17,440 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:52:17,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:52:17,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:52:17,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:52:17,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:52:17,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:52:17,468 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:52:17,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:52:17,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:52:17,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:52:17,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:52:17,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:52:17,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:52:17,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:52:17,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:52:17,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:52:17,545 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:52:17,545 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:52:17,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:52:17,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:52:17,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:52:17,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:52:17,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:52:17,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:52:17,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:52:17,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:52:17,646 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-11 08:52:17,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 08:52:17,670 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 08:52:17,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:52:17,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:52:17,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 08:52:17,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 08:52:17,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333827651] [2021-03-11 08:52:17,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 08:52:17,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 08:52:17,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820602450] [2021-03-11 08:52:17,673 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 08:52:17,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 08:52:17,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 08:52:17,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-11 08:52:17,674 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-03-11 08:52:17,674 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1904 places, 8210 transitions, 132090 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:52:17,674 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 08:52:17,674 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-03-11 08:52:17,674 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 08:52:40,346 INFO L129 PetriNetUnfolder]: 9531/19957 cut-off events. [2021-03-11 08:52:40,346 INFO L130 PetriNetUnfolder]: For 887780/894211 co-relation queries the response was YES. [2021-03-11 08:52:40,988 INFO L84 FinitePrefix]: Finished finitePrefix Result has 186334 conditions, 19957 events. 9531/19957 cut-off events. For 887780/894211 co-relation queries the response was YES. Maximal size of possible extension queue 1036. Compared 195797 event pairs, 334 based on Foata normal form. 632/20540 useless extension candidates. Maximal degree in co-relation 185754. Up to 14311 conditions per place. [2021-03-11 08:52:41,191 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 7645 selfloop transitions, 691 changer transitions 3/8360 dead transitions. [2021-03-11 08:52:41,191 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1952 places, 8360 transitions, 156585 flow [2021-03-11 08:52:41,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-03-11 08:52:41,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-03-11 08:52:41,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 1527 transitions. [2021-03-11 08:52:41,193 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.665359477124183 [2021-03-11 08:52:41,193 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 1527 transitions. [2021-03-11 08:52:41,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 1527 transitions. [2021-03-11 08:52:41,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 08:52:41,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 1527 transitions. [2021-03-11 08:52:41,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 29.941176470588236) internal successors, (1527), 51 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:52:41,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 45.0) internal successors, (2340), 52 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:52:41,196 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 45.0) internal successors, (2340), 52 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:52:41,196 INFO L185 Difference]: Start difference. First operand has 1904 places, 8210 transitions, 132090 flow. Second operand 51 states and 1527 transitions. [2021-03-11 08:52:41,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1952 places, 8360 transitions, 156585 flow [2021-03-11 08:53:03,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1940 places, 8360 transitions, 148241 flow, removed 3741 selfloop flow, removed 12 redundant places. [2021-03-11 08:53:03,514 INFO L241 Difference]: Finished difference. Result has 1954 places, 8336 transitions, 132040 flow [2021-03-11 08:53:03,517 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=123852, PETRI_DIFFERENCE_MINUEND_PLACES=1890, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=584, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7605, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=132040, PETRI_PLACES=1954, PETRI_TRANSITIONS=8336} [2021-03-11 08:53:03,517 INFO L335 CegarLoopForPetriNet]: 52 programPoint places, 1902 predicate places. [2021-03-11 08:53:03,517 INFO L480 AbstractCegarLoop]: Abstraction has has 1954 places, 8336 transitions, 132040 flow [2021-03-11 08:53:03,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:53:03,518 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 08:53:03,518 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 08:53:03,518 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-03-11 08:53:03,518 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 08:53:03,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 08:53:03,518 INFO L82 PathProgramCache]: Analyzing trace with hash 38737242, now seen corresponding path program 31 times [2021-03-11 08:53:03,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 08:53:03,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298216889] [2021-03-11 08:53:03,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 08:53:03,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 08:53:03,529 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-11 08:53:03,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 08:53:03,533 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:53:03,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:53:03,540 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:53:03,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:53:03,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:53:03,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:53:03,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:53:03,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:53:03,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:53:03,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:53:03,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:53:03,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:53:03,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:53:03,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:53:03,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:53:03,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:53:03,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:53:03,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:53:03,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:53:03,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:53:03,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:53:03,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:53:03,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:53:03,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:53:03,692 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:53:03,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:53:03,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:53:03,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:53:03,735 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 08:53:03,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 08:53:03,757 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 08:53:03,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:53:03,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:53:03,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 08:53:03,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 08:53:03,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298216889] [2021-03-11 08:53:03,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 08:53:03,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 08:53:03,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977685879] [2021-03-11 08:53:03,760 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 08:53:03,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 08:53:03,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 08:53:03,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-11 08:53:03,761 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-03-11 08:53:03,761 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1954 places, 8336 transitions, 132040 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:53:03,761 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 08:53:03,761 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-03-11 08:53:03,761 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 08:53:27,419 INFO L129 PetriNetUnfolder]: 9564/20107 cut-off events. [2021-03-11 08:53:27,419 INFO L130 PetriNetUnfolder]: For 899348/907322 co-relation queries the response was YES. [2021-03-11 08:53:28,085 INFO L84 FinitePrefix]: Finished finitePrefix Result has 184578 conditions, 20107 events. 9564/20107 cut-off events. For 899348/907322 co-relation queries the response was YES. Maximal size of possible extension queue 1016. Compared 197905 event pairs, 330 based on Foata normal form. 931/20977 useless extension candidates. Maximal degree in co-relation 183987. Up to 14296 conditions per place. [2021-03-11 08:53:28,306 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 7531 selfloop transitions, 860 changer transitions 6/8418 dead transitions. [2021-03-11 08:53:28,306 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1991 places, 8418 transitions, 152809 flow [2021-03-11 08:53:28,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-11 08:53:28,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-03-11 08:53:28,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 1200 transitions. [2021-03-11 08:53:28,308 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2021-03-11 08:53:28,308 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 1200 transitions. [2021-03-11 08:53:28,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 1200 transitions. [2021-03-11 08:53:28,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 08:53:28,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 1200 transitions. [2021-03-11 08:53:28,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 30.0) internal successors, (1200), 40 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:53:28,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 45.0) internal successors, (1845), 41 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:53:28,310 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 45.0) internal successors, (1845), 41 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:53:28,310 INFO L185 Difference]: Start difference. First operand has 1954 places, 8336 transitions, 132040 flow. Second operand 40 states and 1200 transitions. [2021-03-11 08:53:28,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1991 places, 8418 transitions, 152809 flow [2021-03-11 08:53:53,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1984 places, 8418 transitions, 146298 flow, removed 3056 selfloop flow, removed 7 redundant places. [2021-03-11 08:53:53,415 INFO L241 Difference]: Finished difference. Result has 1998 places, 8386 transitions, 130136 flow [2021-03-11 08:53:53,418 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=125625, PETRI_DIFFERENCE_MINUEND_PLACES=1945, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=815, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=130136, PETRI_PLACES=1998, PETRI_TRANSITIONS=8386} [2021-03-11 08:53:53,418 INFO L335 CegarLoopForPetriNet]: 52 programPoint places, 1946 predicate places. [2021-03-11 08:53:53,418 INFO L480 AbstractCegarLoop]: Abstraction has has 1998 places, 8386 transitions, 130136 flow [2021-03-11 08:53:53,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:53:53,418 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 08:53:53,418 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 08:53:53,418 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-11 08:53:53,418 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 08:53:53,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 08:53:53,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1019528032, now seen corresponding path program 32 times [2021-03-11 08:53:53,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 08:53:53,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662142452] [2021-03-11 08:53:53,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 08:53:53,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 08:53:53,435 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-11 08:53:53,435 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 08:53:53,439 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:53:53,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:53:53,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:53:53,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:53:53,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:53:53,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:53:53,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:53:53,465 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:53:53,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:53:53,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:53:53,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:53:53,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:53:53,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:53:53,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:53:53,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:53:53,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:53:53,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:53:53,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:53:53,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:53:53,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:53:53,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:53:53,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:53:53,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:53:53,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:53:53,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:53:53,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:53:53,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:53:53,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:53:53,651 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-03-11 08:53:53,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 08:53:53,675 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 08:53:53,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:53:53,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:53:53,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 08:53:53,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 08:53:53,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662142452] [2021-03-11 08:53:53,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 08:53:53,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 08:53:53,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616184087] [2021-03-11 08:53:53,679 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 08:53:53,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 08:53:53,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 08:53:53,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-11 08:53:53,679 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-03-11 08:53:53,679 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1998 places, 8386 transitions, 130136 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:53:53,679 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 08:53:53,679 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-03-11 08:53:53,680 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 08:54:17,422 INFO L129 PetriNetUnfolder]: 9753/20584 cut-off events. [2021-03-11 08:54:17,422 INFO L130 PetriNetUnfolder]: For 916687/922737 co-relation queries the response was YES. [2021-03-11 08:54:18,121 INFO L84 FinitePrefix]: Finished finitePrefix Result has 187832 conditions, 20584 events. 9753/20584 cut-off events. For 916687/922737 co-relation queries the response was YES. Maximal size of possible extension queue 1076. Compared 204309 event pairs, 348 based on Foata normal form. 1718/22252 useless extension candidates. Maximal degree in co-relation 187221. Up to 14337 conditions per place. [2021-03-11 08:54:18,235 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 7433 selfloop transitions, 1247 changer transitions 1/8702 dead transitions. [2021-03-11 08:54:18,235 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2045 places, 8702 transitions, 155744 flow [2021-03-11 08:54:18,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-03-11 08:54:18,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-03-11 08:54:18,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 1572 transitions. [2021-03-11 08:54:18,237 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6717948717948717 [2021-03-11 08:54:18,237 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 1572 transitions. [2021-03-11 08:54:18,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 1572 transitions. [2021-03-11 08:54:18,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 08:54:18,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 1572 transitions. [2021-03-11 08:54:18,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 30.23076923076923) internal successors, (1572), 52 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:54:18,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 45.0) internal successors, (2385), 53 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:54:18,239 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 45.0) internal successors, (2385), 53 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:54:18,239 INFO L185 Difference]: Start difference. First operand has 1998 places, 8386 transitions, 130136 flow. Second operand 52 states and 1572 transitions. [2021-03-11 08:54:18,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2045 places, 8702 transitions, 155744 flow [2021-03-11 08:54:43,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2031 places, 8702 transitions, 152797 flow, removed 1044 selfloop flow, removed 14 redundant places. [2021-03-11 08:54:43,993 INFO L241 Difference]: Finished difference. Result has 2044 places, 8591 transitions, 135877 flow [2021-03-11 08:54:43,995 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=127212, PETRI_DIFFERENCE_MINUEND_PLACES=1980, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1081, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=135877, PETRI_PLACES=2044, PETRI_TRANSITIONS=8591} [2021-03-11 08:54:43,996 INFO L335 CegarLoopForPetriNet]: 52 programPoint places, 1992 predicate places. [2021-03-11 08:54:43,996 INFO L480 AbstractCegarLoop]: Abstraction has has 2044 places, 8591 transitions, 135877 flow [2021-03-11 08:54:43,996 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:54:43,996 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 08:54:43,996 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 08:54:43,996 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-03-11 08:54:43,996 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 08:54:43,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 08:54:43,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1924986776, now seen corresponding path program 33 times [2021-03-11 08:54:43,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 08:54:43,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664119521] [2021-03-11 08:54:43,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 08:54:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 08:54:44,008 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-11 08:54:44,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 08:54:44,012 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:54:44,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:54:44,018 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:54:44,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:54:44,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:54:44,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:54:44,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:54:44,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:54:44,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:54:44,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:54:44,065 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:54:44,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:54:44,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:54:44,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:54:44,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:54:44,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:54:44,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:54:44,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:54:44,111 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:54:44,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:54:44,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:54:44,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:54:44,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:54:44,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:54:44,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:54:44,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:54:44,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:54:44,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:54:44,199 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-11 08:54:44,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 08:54:44,225 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 08:54:44,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:54:44,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:54:44,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 08:54:44,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 08:54:44,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664119521] [2021-03-11 08:54:44,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 08:54:44,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 08:54:44,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612300853] [2021-03-11 08:54:44,228 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 08:54:44,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 08:54:44,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 08:54:44,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 08:54:44,229 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-03-11 08:54:44,229 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2044 places, 8591 transitions, 135877 flow. Second operand has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:54:44,229 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 08:54:44,229 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-03-11 08:54:44,229 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 08:55:08,734 INFO L129 PetriNetUnfolder]: 9824/20780 cut-off events. [2021-03-11 08:55:08,734 INFO L130 PetriNetUnfolder]: For 964942/971079 co-relation queries the response was YES. [2021-03-11 08:55:09,482 INFO L84 FinitePrefix]: Finished finitePrefix Result has 192881 conditions, 20780 events. 9824/20780 cut-off events. For 964942/971079 co-relation queries the response was YES. Maximal size of possible extension queue 1084. Compared 206810 event pairs, 351 based on Foata normal form. 580/21301 useless extension candidates. Maximal degree in co-relation 192250. Up to 14705 conditions per place. [2021-03-11 08:55:09,600 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 7862 selfloop transitions, 828 changer transitions 3/8714 dead transitions. [2021-03-11 08:55:09,600 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2084 places, 8714 transitions, 158671 flow [2021-03-11 08:55:09,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-11 08:55:09,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-03-11 08:55:09,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 1275 transitions. [2021-03-11 08:55:09,602 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6746031746031746 [2021-03-11 08:55:09,602 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 1275 transitions. [2021-03-11 08:55:09,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 1275 transitions. [2021-03-11 08:55:09,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 08:55:09,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 1275 transitions. [2021-03-11 08:55:09,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 30.357142857142858) internal successors, (1275), 42 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:55:09,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 45.0) internal successors, (1935), 43 states have internal predecessors, (1935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:55:09,604 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 45.0) internal successors, (1935), 43 states have internal predecessors, (1935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:55:09,604 INFO L185 Difference]: Start difference. First operand has 2044 places, 8591 transitions, 135877 flow. Second operand 42 states and 1275 transitions. [2021-03-11 08:55:09,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2084 places, 8714 transitions, 158671 flow [2021-03-11 08:55:39,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2068 places, 8714 transitions, 155576 flow, removed 1266 selfloop flow, removed 16 redundant places. [2021-03-11 08:55:39,274 INFO L241 Difference]: Finished difference. Result has 2079 places, 8680 transitions, 138500 flow [2021-03-11 08:55:39,277 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=132786, PETRI_DIFFERENCE_MINUEND_PLACES=2027, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=747, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7828, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=138500, PETRI_PLACES=2079, PETRI_TRANSITIONS=8680} [2021-03-11 08:55:39,277 INFO L335 CegarLoopForPetriNet]: 52 programPoint places, 2027 predicate places. [2021-03-11 08:55:39,277 INFO L480 AbstractCegarLoop]: Abstraction has has 2079 places, 8680 transitions, 138500 flow [2021-03-11 08:55:39,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:55:39,277 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 08:55:39,277 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 08:55:39,277 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-03-11 08:55:39,277 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 08:55:39,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 08:55:39,278 INFO L82 PathProgramCache]: Analyzing trace with hash 104791084, now seen corresponding path program 34 times [2021-03-11 08:55:39,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 08:55:39,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944104405] [2021-03-11 08:55:39,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 08:55:39,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 08:55:39,290 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-11 08:55:39,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 08:55:39,294 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:55:39,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:55:39,301 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:55:39,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:55:39,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:55:39,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:55:39,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:55:39,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:55:39,331 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:55:39,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:55:39,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:55:39,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:55:39,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:55:39,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:55:39,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:55:39,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:55:39,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:55:39,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:55:39,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:55:39,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:55:39,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:55:39,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:55:39,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:55:39,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:55:39,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:55:39,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:55:39,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:55:39,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:55:39,501 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-11 08:55:39,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 08:55:39,523 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 08:55:39,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:55:39,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:55:39,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 08:55:39,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 08:55:39,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944104405] [2021-03-11 08:55:39,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 08:55:39,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-03-11 08:55:39,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364466503] [2021-03-11 08:55:39,527 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-11 08:55:39,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 08:55:39,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-11 08:55:39,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-03-11 08:55:39,527 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-03-11 08:55:39,528 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2079 places, 8680 transitions, 138500 flow. Second operand has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:55:39,528 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 08:55:39,528 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-03-11 08:55:39,528 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 08:56:04,804 INFO L129 PetriNetUnfolder]: 9869/20950 cut-off events. [2021-03-11 08:56:04,804 INFO L130 PetriNetUnfolder]: For 1025385/1031725 co-relation queries the response was YES. [2021-03-11 08:56:05,632 INFO L84 FinitePrefix]: Finished finitePrefix Result has 196086 conditions, 20950 events. 9869/20950 cut-off events. For 1025385/1031725 co-relation queries the response was YES. Maximal size of possible extension queue 1084. Compared 209430 event pairs, 365 based on Foata normal form. 613/21511 useless extension candidates. Maximal degree in co-relation 195452. Up to 15072 conditions per place. [2021-03-11 08:56:05,751 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 8050 selfloop transitions, 683 changer transitions 4/8758 dead transitions. [2021-03-11 08:56:05,751 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2116 places, 8758 transitions, 160070 flow [2021-03-11 08:56:05,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-11 08:56:05,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-03-11 08:56:05,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 1177 transitions. [2021-03-11 08:56:05,752 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6538888888888889 [2021-03-11 08:56:05,753 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 1177 transitions. [2021-03-11 08:56:05,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 1177 transitions. [2021-03-11 08:56:05,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 08:56:05,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 1177 transitions. [2021-03-11 08:56:05,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 29.425) internal successors, (1177), 40 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:56:05,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 45.0) internal successors, (1845), 41 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:56:05,754 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 45.0) internal successors, (1845), 41 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:56:05,754 INFO L185 Difference]: Start difference. First operand has 2079 places, 8680 transitions, 138500 flow. Second operand 40 states and 1177 transitions. [2021-03-11 08:56:05,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2116 places, 8758 transitions, 160070 flow [2021-03-11 08:56:38,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2102 places, 8758 transitions, 156737 flow, removed 1285 selfloop flow, removed 14 redundant places. [2021-03-11 08:56:38,914 INFO L241 Difference]: Finished difference. Result has 2105 places, 8739 transitions, 140108 flow [2021-03-11 08:56:38,917 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=135315, PETRI_DIFFERENCE_MINUEND_PLACES=2063, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8680, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=635, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8044, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=140108, PETRI_PLACES=2105, PETRI_TRANSITIONS=8739} [2021-03-11 08:56:38,917 INFO L335 CegarLoopForPetriNet]: 52 programPoint places, 2053 predicate places. [2021-03-11 08:56:38,917 INFO L480 AbstractCegarLoop]: Abstraction has has 2105 places, 8739 transitions, 140108 flow [2021-03-11 08:56:38,917 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 27.0) internal successors, (486), 18 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:56:38,917 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 08:56:38,917 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 08:56:38,917 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-03-11 08:56:38,918 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 08:56:38,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 08:56:38,918 INFO L82 PathProgramCache]: Analyzing trace with hash 431975704, now seen corresponding path program 35 times [2021-03-11 08:56:38,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 08:56:38,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427693084] [2021-03-11 08:56:38,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 08:56:38,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 08:56:38,931 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-11 08:56:38,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 08:56:38,936 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:56:38,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:56:38,942 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:56:38,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:56:38,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:56:38,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:56:38,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:56:38,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:56:38,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:56:38,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:56:38,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:56:38,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:56:38,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:56:38,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:56:39,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:56:39,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:56:39,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:56:39,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:56:39,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:56:39,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:56:39,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:56:39,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:56:39,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:56:39,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:56:39,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:56:39,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:56:39,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:56:39,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:56:39,118 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-11 08:56:39,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 08:56:39,142 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 08:56:39,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:56:39,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:56:39,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 08:56:39,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 08:56:39,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427693084] [2021-03-11 08:56:39,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 08:56:39,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 08:56:39,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477933041] [2021-03-11 08:56:39,145 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 08:56:39,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 08:56:39,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 08:56:39,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 08:56:39,146 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-03-11 08:56:39,146 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2105 places, 8739 transitions, 140108 flow. Second operand has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:56:39,146 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 08:56:39,146 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-03-11 08:56:39,146 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 08:57:04,972 INFO L129 PetriNetUnfolder]: 9908/21069 cut-off events. [2021-03-11 08:57:04,973 INFO L130 PetriNetUnfolder]: For 973082/981042 co-relation queries the response was YES. [2021-03-11 08:57:05,744 INFO L84 FinitePrefix]: Finished finitePrefix Result has 196166 conditions, 21069 events. 9908/21069 cut-off events. For 973082/981042 co-relation queries the response was YES. Maximal size of possible extension queue 1063. Compared 210882 event pairs, 345 based on Foata normal form. 698/21705 useless extension candidates. Maximal degree in co-relation 195566. Up to 15086 conditions per place. [2021-03-11 08:57:05,859 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 8062 selfloop transitions, 742 changer transitions 8/8833 dead transitions. [2021-03-11 08:57:05,859 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2134 places, 8833 transitions, 161952 flow [2021-03-11 08:57:05,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-11 08:57:05,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-03-11 08:57:05,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 997 transitions. [2021-03-11 08:57:05,861 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6713804713804714 [2021-03-11 08:57:05,861 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 997 transitions. [2021-03-11 08:57:05,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 997 transitions. [2021-03-11 08:57:05,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 08:57:05,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 997 transitions. [2021-03-11 08:57:05,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 30.21212121212121) internal successors, (997), 33 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:57:05,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 45.0) internal successors, (1530), 34 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:57:05,862 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 45.0) internal successors, (1530), 34 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:57:05,862 INFO L185 Difference]: Start difference. First operand has 2105 places, 8739 transitions, 140108 flow. Second operand 33 states and 997 transitions. [2021-03-11 08:57:05,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2134 places, 8833 transitions, 161952 flow [2021-03-11 08:57:34,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2123 places, 8833 transitions, 156643 flow, removed 2268 selfloop flow, removed 11 redundant places. [2021-03-11 08:57:34,458 INFO L241 Difference]: Finished difference. Result has 2137 places, 8808 transitions, 139952 flow [2021-03-11 08:57:34,461 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=136181, PETRI_DIFFERENCE_MINUEND_PLACES=2091, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8739, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=679, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8036, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=139952, PETRI_PLACES=2137, PETRI_TRANSITIONS=8808} [2021-03-11 08:57:34,461 INFO L335 CegarLoopForPetriNet]: 52 programPoint places, 2085 predicate places. [2021-03-11 08:57:34,461 INFO L480 AbstractCegarLoop]: Abstraction has has 2137 places, 8808 transitions, 139952 flow [2021-03-11 08:57:34,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:57:34,461 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 08:57:34,461 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 08:57:34,462 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-03-11 08:57:34,462 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-11 08:57:34,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 08:57:34,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1496356836, now seen corresponding path program 36 times [2021-03-11 08:57:34,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 08:57:34,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691291273] [2021-03-11 08:57:34,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 08:57:34,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 08:57:34,477 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-11 08:57:34,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 08:57:34,482 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-11 08:57:34,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-11 08:57:34,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:57:34,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:57:34,498 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:57:34,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:57:34,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:57:34,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:57:34,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:57:34,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:57:34,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:57:34,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:57:34,550 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:57:34,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:57:34,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:57:34,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:57:34,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:57:34,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:57:34,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:57:34,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:57:34,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:57:34,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:57:34,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:57:34,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-11 08:57:34,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:57:34,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:57:34,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:57:34,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 08:57:34,682 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-11 08:57:34,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-11 08:57:34,705 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-03-11 08:57:34,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 08:57:34,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 08:57:34,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 08:57:34,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 08:57:34,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691291273] [2021-03-11 08:57:34,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 08:57:34,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-03-11 08:57:34,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462090037] [2021-03-11 08:57:34,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-11 08:57:34,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 08:57:34,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-11 08:57:34,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-03-11 08:57:34,709 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-03-11 08:57:34,710 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2137 places, 8808 transitions, 139952 flow. Second operand has 17 states, 17 states have (on average 27.058823529411764) internal successors, (460), 17 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:57:34,710 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 08:57:34,710 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-03-11 08:57:34,710 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 08:57:59,886 INFO L129 PetriNetUnfolder]: 10005/21341 cut-off events. [2021-03-11 08:57:59,886 INFO L130 PetriNetUnfolder]: For 996793/1004356 co-relation queries the response was YES. [2021-03-11 08:58:00,665 INFO L84 FinitePrefix]: Finished finitePrefix Result has 198194 conditions, 21341 events. 10005/21341 cut-off events. For 996793/1004356 co-relation queries the response was YES. Maximal size of possible extension queue 1096. Compared 214800 event pairs, 334 based on Foata normal form. 1138/22417 useless extension candidates. Maximal degree in co-relation 197661. Up to 15097 conditions per place. [2021-03-11 08:58:00,782 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 7906 selfloop transitions, 1004 changer transitions 2/8933 dead transitions. [2021-03-11 08:58:00,782 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2172 places, 8933 transitions, 162279 flow [2021-03-11 08:58:00,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-03-11 08:58:00,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-03-11 08:58:00,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1178 transitions. [2021-03-11 08:58:00,783 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6712250712250712 [2021-03-11 08:58:00,784 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 1178 transitions. [2021-03-11 08:58:00,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 1178 transitions. [2021-03-11 08:58:00,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 08:58:00,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 1178 transitions. [2021-03-11 08:58:00,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 30.205128205128204) internal successors, (1178), 39 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:58:00,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 45.0) internal successors, (1800), 40 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:58:00,785 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 45.0) internal successors, (1800), 40 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 08:58:00,785 INFO L185 Difference]: Start difference. First operand has 2137 places, 8808 transitions, 139952 flow. Second operand 39 states and 1178 transitions. [2021-03-11 08:58:00,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2172 places, 8933 transitions, 162279 flow Received shutdown request... [2021-03-11 08:58:09,837 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-03-11 08:58:09,837 WARN L545 AbstractCegarLoop]: Verification canceled [2021-03-11 08:58:09,840 WARN L224 ceAbstractionStarter]: Timeout [2021-03-11 08:58:09,840 INFO L202 PluginConnector]: Adding new model easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 08:58:09 BasicIcfg [2021-03-11 08:58:09,840 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 08:58:09,841 INFO L168 Benchmark]: Toolchain (without parser) took 806395.63 ms. Allocated memory was 255.9 MB in the beginning and 11.8 GB in the end (delta: 11.6 GB). Free memory was 236.4 MB in the beginning and 2.0 GB in the end (delta: -1.7 GB). Peak memory consumption was 10.3 GB. Max. memory is 16.0 GB. [2021-03-11 08:58:09,841 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 08:58:09,841 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.30 ms. Allocated memory is still 255.9 MB. Free memory was 235.7 MB in the beginning and 234.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 08:58:09,841 INFO L168 Benchmark]: Boogie Preprocessor took 14.40 ms. Allocated memory is still 255.9 MB. Free memory was 234.3 MB in the beginning and 233.4 MB in the end (delta: 895.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 08:58:09,841 INFO L168 Benchmark]: RCFGBuilder took 235.21 ms. Allocated memory is still 255.9 MB. Free memory was 233.3 MB in the beginning and 237.0 MB in the end (delta: -3.7 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.0 GB. [2021-03-11 08:58:09,841 INFO L168 Benchmark]: TraceAbstraction took 806119.48 ms. Allocated memory was 255.9 MB in the beginning and 11.8 GB in the end (delta: 11.6 GB). Free memory was 236.3 MB in the beginning and 2.0 GB in the end (delta: -1.7 GB). Peak memory consumption was 10.3 GB. Max. memory is 16.0 GB. [2021-03-11 08:58:09,841 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 0.10 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 17.30 ms. Allocated memory is still 255.9 MB. Free memory was 235.7 MB in the beginning and 234.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.40 ms. Allocated memory is still 255.9 MB. Free memory was 234.3 MB in the beginning and 233.4 MB in the end (delta: 895.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 235.21 ms. Allocated memory is still 255.9 MB. Free memory was 233.3 MB in the beginning and 237.0 MB in the end (delta: -3.7 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 806119.48 ms. Allocated memory was 255.9 MB in the beginning and 11.8 GB in the end (delta: 11.6 GB). Free memory was 236.3 MB in the beginning and 2.0 GB in the end (delta: -1.7 GB). Peak memory consumption was 10.3 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 79). Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 14.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: TIMEOUT, OverallTime: 806058.7ms, OverallIterations: 36, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 797785.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 33.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1596 SDtfs, 3409 SDslu, 2344 SDs, 0 SdLazy, 62393 SolverSat, 2554 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20491.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2179 GetRequests, 42 SyntacticMatches, 40 SemanticMatches, 2097 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42876 ImplicationChecksByTransitivity, 42496.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=140108occurred in iteration=34, InterpolantAutomatonStates: 1915, 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: 33.9ms SsaConstructionTime, 140.7ms SatisfiabilityAnalysisTime, 7872.9ms InterpolantComputationTime, 1404 NumberOfCodeBlocks, 1404 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 1368 ConstructedInterpolants, 0 QuantifiedInterpolants, 17294 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 36 InterpolantComputations, 36 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown