/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 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 18:50:51,153 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 18:50:51,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 18:50:51,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 18:50:51,196 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 18:50:51,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 18:50:51,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 18:50:51,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 18:50:51,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 18:50:51,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 18:50:51,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 18:50:51,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 18:50:51,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 18:50:51,216 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 18:50:51,217 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 18:50:51,218 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 18:50:51,221 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 18:50:51,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 18:50:51,224 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 18:50:51,230 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 18:50:51,231 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 18:50:51,232 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 18:50:51,233 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 18:50:51,235 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 18:50:51,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-10 18:50:51,244 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 18:50:51,245 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 18:50:51,246 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 18:50:51,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 18:50:51,247 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 18:50:51,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 18:50:51,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 18:50:51,248 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 18:50:51,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 18:50:51,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 18:50:51,249 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 18:50:51,253 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-06-10 18:50:51,286 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 18:50:51,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 18:50:51,289 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 18:50:51,290 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 18:50:51,290 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 18:50:51,290 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 18:50:51,290 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 18:50:51,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 18:50:51,290 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 18:50:51,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 18:50:51,291 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 18:50:51,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 18:50:51,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 18:50:51,292 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 18:50:51,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 18:50:51,292 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 18:50:51,292 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 18:50:51,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 18:50:51,292 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 18:50:51,293 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 18:50:51,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 18:50:51,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 18:50:51,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 18:50:51,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 18:50:51,293 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 18:50:51,293 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 18:50:51,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 18:50:51,294 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-10 18:50:51,294 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 18:50:51,294 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 18:50:51,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 18:50:51,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 18:50:51,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 18:50:51,613 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-10 18:50:51,614 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-10 18:50:51,614 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy10.wvr.bpl [2021-06-10 18:50:51,615 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy10.wvr.bpl' [2021-06-10 18:50:51,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 18:50:51,682 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-10 18:50:51,683 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 18:50:51,683 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 18:50:51,683 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 18:50:51,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 06:50:51" (1/1) ... [2021-06-10 18:50:51,700 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 06:50:51" (1/1) ... [2021-06-10 18:50:51,706 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 18:50:51,708 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 18:50:51,708 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 18:50:51,708 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 18:50:51,715 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 06:50:51" (1/1) ... [2021-06-10 18:50:51,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 06:50:51" (1/1) ... [2021-06-10 18:50:51,717 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 06:50:51" (1/1) ... [2021-06-10 18:50:51,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 06:50:51" (1/1) ... [2021-06-10 18:50:51,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 06:50:51" (1/1) ... [2021-06-10 18:50:51,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 06:50:51" (1/1) ... [2021-06-10 18:50:51,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 06:50:51" (1/1) ... [2021-06-10 18:50:51,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 18:50:51,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 18:50:51,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 18:50:51,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 18:50:51,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 06:50:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 18:50:51,792 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-10 18:50:51,792 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-10 18:50:51,792 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-10 18:50:51,792 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-10 18:50:51,793 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-10 18:50:51,793 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-10 18:50:51,793 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-10 18:50:51,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 18:50:51,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 18:50:51,793 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-10 18:50:51,793 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-10 18:50:51,794 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-10 18:50:51,794 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-06-10 18:50:51,794 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-06-10 18:50:51,794 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-06-10 18:50:51,795 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 18:50:51,942 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 18:50:51,942 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-10 18:50:51,943 INFO L202 PluginConnector]: Adding new model easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 06:50:51 BoogieIcfgContainer [2021-06-10 18:50:51,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 18:50:51,945 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 18:50:51,945 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 18:50:51,948 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 18:50:51,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.06 06:50:51" (1/2) ... [2021-06-10 18:50:51,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a1200c9 and model type easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 06:50:51, skipping insertion in model container [2021-06-10 18:50:51,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 06:50:51" (2/2) ... [2021-06-10 18:50:51,950 INFO L111 eAbstractionObserver]: Analyzing ICFG easy10.wvr.bpl [2021-06-10 18:50:51,954 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 18:50:51,958 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 18:50:51,958 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 18:50:52,044 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-10 18:50:52,073 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-06-10 18:50:52,091 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 18:50:52,091 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 18:50:52,092 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 18:50:52,092 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 18:50:52,092 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 18:50:52,092 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 18:50:52,092 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 18:50:52,092 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 18:50:52,103 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 58 places, 45 transitions, 122 flow [2021-06-10 18:50:52,133 INFO L129 PetriNetUnfolder]: 0/41 cut-off events. [2021-06-10 18:50:52,133 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-06-10 18:50:52,135 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. [2021-06-10 18:50:52,135 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 45 transitions, 122 flow [2021-06-10 18:50:52,139 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 39 transitions, 102 flow [2021-06-10 18:50:52,154 INFO L129 PetriNetUnfolder]: 0/38 cut-off events. [2021-06-10 18:50:52,155 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-06-10 18:50:52,155 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 18:50:52,156 INFO L263 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] [2021-06-10 18:50:52,156 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 18:50:52,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 18:50:52,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1388169208, now seen corresponding path program 1 times [2021-06-10 18:50:52,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 18:50:52,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470797910] [2021-06-10 18:50:52,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 18:50:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 18:50:52,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:52,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-10 18:50:52,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:52,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 18:50:52,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 18:50:52,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470797910] [2021-06-10 18:50:52,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 18:50:52,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 18:50:52,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388152196] [2021-06-10 18:50:52,360 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 18:50:52,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 18:50:52,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 18:50:52,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 18:50:52,378 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 45 [2021-06-10 18:50:52,381 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) [2021-06-10 18:50:52,381 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 18:50:52,381 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 45 [2021-06-10 18:50:52,382 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 18:50:52,432 INFO L129 PetriNetUnfolder]: 1/45 cut-off events. [2021-06-10 18:50:52,433 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-06-10 18:50:52,435 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. [2021-06-10 18:50:52,436 INFO L132 encePairwiseOnDemand]: 42/45 looper letters, 2 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2021-06-10 18:50:52,436 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 39 transitions, 110 flow [2021-06-10 18:50:52,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 18:50:52,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 18:50:52,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2021-06-10 18:50:52,447 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9259259259259259 [2021-06-10 18:50:52,448 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 125 transitions. [2021-06-10 18:50:52,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 125 transitions. [2021-06-10 18:50:52,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 18:50:52,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 125 transitions. [2021-06-10 18:50:52,457 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) [2021-06-10 18:50:52,462 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) [2021-06-10 18:50:52,463 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) [2021-06-10 18:50:52,465 INFO L185 Difference]: Start difference. First operand has 52 places, 39 transitions, 102 flow. Second operand 3 states and 125 transitions. [2021-06-10 18:50:52,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 39 transitions, 110 flow [2021-06-10 18:50:52,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 39 transitions, 94 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-06-10 18:50:52,474 INFO L241 Difference]: Finished difference. Result has 47 places, 39 transitions, 94 flow [2021-06-10 18:50:52,476 INFO L326 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} [2021-06-10 18:50:52,477 INFO L343 CegarLoopForPetriNet]: 52 programPoint places, -5 predicate places. [2021-06-10 18:50:52,477 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 94 flow [2021-06-10 18:50:52,477 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) [2021-06-10 18:50:52,477 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 18:50:52,477 INFO L263 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] [2021-06-10 18:50:52,477 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 18:50:52,478 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 18:50:52,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 18:50:52,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1425460208, now seen corresponding path program 2 times [2021-06-10 18:50:52,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 18:50:52,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334119901] [2021-06-10 18:50:52,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 18:50:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 18:50:52,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:52,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-10 18:50:52,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:52,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 18:50:52,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 18:50:52,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334119901] [2021-06-10 18:50:52,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 18:50:52,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 18:50:52,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289923742] [2021-06-10 18:50:52,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 18:50:52,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 18:50:52,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 18:50:52,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 18:50:52,548 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 45 [2021-06-10 18:50:52,549 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) [2021-06-10 18:50:52,549 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 18:50:52,549 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 45 [2021-06-10 18:50:52,549 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 18:50:52,576 INFO L129 PetriNetUnfolder]: 1/45 cut-off events. [2021-06-10 18:50:52,576 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 18:50:52,577 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. [2021-06-10 18:50:52,578 INFO L132 encePairwiseOnDemand]: 42/45 looper letters, 2 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2021-06-10 18:50:52,578 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 39 transitions, 102 flow [2021-06-10 18:50:52,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 18:50:52,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 18:50:52,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2021-06-10 18:50:52,583 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9259259259259259 [2021-06-10 18:50:52,583 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 125 transitions. [2021-06-10 18:50:52,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 125 transitions. [2021-06-10 18:50:52,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 18:50:52,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 125 transitions. [2021-06-10 18:50:52,586 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) [2021-06-10 18:50:52,588 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) [2021-06-10 18:50:52,588 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) [2021-06-10 18:50:52,588 INFO L185 Difference]: Start difference. First operand has 47 places, 39 transitions, 94 flow. Second operand 3 states and 125 transitions. [2021-06-10 18:50:52,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 39 transitions, 102 flow [2021-06-10 18:50:52,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 39 transitions, 98 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 18:50:52,591 INFO L241 Difference]: Finished difference. Result has 48 places, 39 transitions, 98 flow [2021-06-10 18:50:52,592 INFO L326 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} [2021-06-10 18:50:52,592 INFO L343 CegarLoopForPetriNet]: 52 programPoint places, -4 predicate places. [2021-06-10 18:50:52,593 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 98 flow [2021-06-10 18:50:52,594 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) [2021-06-10 18:50:52,596 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 18:50:52,597 INFO L263 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] [2021-06-10 18:50:52,597 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 18:50:52,597 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 18:50:52,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 18:50:52,600 INFO L82 PathProgramCache]: Analyzing trace with hash -126316958, now seen corresponding path program 3 times [2021-06-10 18:50:52,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 18:50:52,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123664024] [2021-06-10 18:50:52,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 18:50:52,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 18:50:52,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:52,640 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-10 18:50:52,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:52,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 18:50:52,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 18:50:52,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123664024] [2021-06-10 18:50:52,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 18:50:52,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 18:50:52,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120289720] [2021-06-10 18:50:52,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 18:50:52,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 18:50:52,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 18:50:52,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 18:50:52,650 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 45 [2021-06-10 18:50:52,650 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) [2021-06-10 18:50:52,650 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 18:50:52,650 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 45 [2021-06-10 18:50:52,651 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 18:50:52,670 INFO L129 PetriNetUnfolder]: 1/44 cut-off events. [2021-06-10 18:50:52,670 INFO L130 PetriNetUnfolder]: For 2/3 co-relation queries the response was YES. [2021-06-10 18:50:52,672 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. [2021-06-10 18:50:52,672 INFO L132 encePairwiseOnDemand]: 42/45 looper letters, 2 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2021-06-10 18:50:52,672 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 39 transitions, 106 flow [2021-06-10 18:50:52,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 18:50:52,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 18:50:52,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2021-06-10 18:50:52,675 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9259259259259259 [2021-06-10 18:50:52,675 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 125 transitions. [2021-06-10 18:50:52,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 125 transitions. [2021-06-10 18:50:52,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 18:50:52,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 125 transitions. [2021-06-10 18:50:52,677 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) [2021-06-10 18:50:52,677 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) [2021-06-10 18:50:52,677 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) [2021-06-10 18:50:52,678 INFO L185 Difference]: Start difference. First operand has 48 places, 39 transitions, 98 flow. Second operand 3 states and 125 transitions. [2021-06-10 18:50:52,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 39 transitions, 106 flow [2021-06-10 18:50:52,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 39 transitions, 102 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 18:50:52,680 INFO L241 Difference]: Finished difference. Result has 49 places, 39 transitions, 102 flow [2021-06-10 18:50:52,680 INFO L326 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} [2021-06-10 18:50:52,680 INFO L343 CegarLoopForPetriNet]: 52 programPoint places, -3 predicate places. [2021-06-10 18:50:52,680 INFO L480 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 102 flow [2021-06-10 18:50:52,680 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) [2021-06-10 18:50:52,681 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 18:50:52,681 INFO L263 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] [2021-06-10 18:50:52,681 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 18:50:52,681 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 18:50:52,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 18:50:52,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1554261298, now seen corresponding path program 4 times [2021-06-10 18:50:52,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 18:50:52,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551863117] [2021-06-10 18:50:52,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 18:50:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 18:50:52,843 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-10 18:50:52,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 18:50:52,850 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 18:50:52,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 18:50:52,862 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 18:50:52,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 18:50:52,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:52,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:50:52,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:52,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:50:52,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:52,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:50:52,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:52,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:50:52,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:52,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:50:52,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:52,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:50:52,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:52,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:50:53,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:53,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:50:53,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:53,033 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:50:53,056 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:53,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:50:53,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:53,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:50:53,094 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-06-10 18:50:53,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 18:50:53,133 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-10 18:50:53,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 18:50:53,172 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 18:50:53,173 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:50:53,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:53,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 18:50:53,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 18:50:53,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551863117] [2021-06-10 18:50:53,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 18:50:53,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-10 18:50:53,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621351006] [2021-06-10 18:50:53,182 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-10 18:50:53,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 18:50:53,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-10 18:50:53,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-10 18:50:53,185 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-06-10 18:50:53,186 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) [2021-06-10 18:50:53,186 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 18:50:53,186 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-06-10 18:50:53,186 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 18:50:54,519 INFO L129 PetriNetUnfolder]: 781/1559 cut-off events. [2021-06-10 18:50:54,519 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 18:50:54,524 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. [2021-06-10 18:50:54,531 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 43 selfloop transitions, 57 changer transitions 3/124 dead transitions. [2021-06-10 18:50:54,532 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 124 transitions, 478 flow [2021-06-10 18:50:54,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-10 18:50:54,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-06-10 18:50:54,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 728 transitions. [2021-06-10 18:50:54,540 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.674074074074074 [2021-06-10 18:50:54,540 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 728 transitions. [2021-06-10 18:50:54,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 728 transitions. [2021-06-10 18:50:54,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 18:50:54,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 728 transitions. [2021-06-10 18:50:54,542 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) [2021-06-10 18:50:54,547 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) [2021-06-10 18:50:54,550 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) [2021-06-10 18:50:54,551 INFO L185 Difference]: Start difference. First operand has 49 places, 39 transitions, 102 flow. Second operand 24 states and 728 transitions. [2021-06-10 18:50:54,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 124 transitions, 478 flow [2021-06-10 18:50:54,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 124 transitions, 474 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 18:50:54,560 INFO L241 Difference]: Finished difference. Result has 78 places, 95 transitions, 388 flow [2021-06-10 18:50:54,562 INFO L326 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} [2021-06-10 18:50:54,562 INFO L343 CegarLoopForPetriNet]: 52 programPoint places, 26 predicate places. [2021-06-10 18:50:54,562 INFO L480 AbstractCegarLoop]: Abstraction has has 78 places, 95 transitions, 388 flow [2021-06-10 18:50:54,562 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) [2021-06-10 18:50:54,563 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 18:50:54,563 INFO L263 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] [2021-06-10 18:50:54,563 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 18:50:54,563 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 18:50:54,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 18:50:54,563 INFO L82 PathProgramCache]: Analyzing trace with hash -834571398, now seen corresponding path program 5 times [2021-06-10 18:50:54,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 18:50:54,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643508299] [2021-06-10 18:50:54,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 18:50:54,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 18:50:54,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:54,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-06-10 18:50:54,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:54,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 18:50:54,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 18:50:54,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643508299] [2021-06-10 18:50:54,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 18:50:54,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 18:50:54,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265068364] [2021-06-10 18:50:54,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 18:50:54,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 18:50:54,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 18:50:54,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 18:50:54,597 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 45 [2021-06-10 18:50:54,597 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) [2021-06-10 18:50:54,597 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 18:50:54,597 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 45 [2021-06-10 18:50:54,597 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 18:50:54,650 INFO L129 PetriNetUnfolder]: 223/553 cut-off events. [2021-06-10 18:50:54,650 INFO L130 PetriNetUnfolder]: For 27/33 co-relation queries the response was YES. [2021-06-10 18:50:54,652 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. [2021-06-10 18:50:54,655 INFO L132 encePairwiseOnDemand]: 42/45 looper letters, 2 selfloop transitions, 2 changer transitions 0/95 dead transitions. [2021-06-10 18:50:54,655 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 95 transitions, 396 flow [2021-06-10 18:50:54,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 18:50:54,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 18:50:54,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2021-06-10 18:50:54,656 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9259259259259259 [2021-06-10 18:50:54,656 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 125 transitions. [2021-06-10 18:50:54,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 125 transitions. [2021-06-10 18:50:54,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 18:50:54,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 125 transitions. [2021-06-10 18:50:54,656 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) [2021-06-10 18:50:54,657 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) [2021-06-10 18:50:54,657 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) [2021-06-10 18:50:54,657 INFO L185 Difference]: Start difference. First operand has 78 places, 95 transitions, 388 flow. Second operand 3 states and 125 transitions. [2021-06-10 18:50:54,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 95 transitions, 396 flow [2021-06-10 18:50:54,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 95 transitions, 394 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-06-10 18:50:54,661 INFO L241 Difference]: Finished difference. Result has 77 places, 95 transitions, 394 flow [2021-06-10 18:50:54,661 INFO L326 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} [2021-06-10 18:50:54,662 INFO L343 CegarLoopForPetriNet]: 52 programPoint places, 25 predicate places. [2021-06-10 18:50:54,662 INFO L480 AbstractCegarLoop]: Abstraction has has 77 places, 95 transitions, 394 flow [2021-06-10 18:50:54,662 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) [2021-06-10 18:50:54,662 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 18:50:54,662 INFO L263 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] [2021-06-10 18:50:54,662 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 18:50:54,662 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 18:50:54,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 18:50:54,663 INFO L82 PathProgramCache]: Analyzing trace with hash -70517682, now seen corresponding path program 6 times [2021-06-10 18:50:54,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 18:50:54,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743559140] [2021-06-10 18:50:54,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 18:50:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 18:50:54,707 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-10 18:50:54,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 18:50:54,713 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 18:50:54,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 18:50:54,724 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 18:50:54,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 18:50:54,736 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-06-10 18:50:54,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 18:50:54,753 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-06-10 18:50:54,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 18:50:54,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:54,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:50:54,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:54,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:50:54,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:54,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:50:54,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:54,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:50:54,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:54,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:50:54,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:54,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:50:54,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:54,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:50:54,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:54,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:50:54,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:54,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:50:54,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:54,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:50:54,968 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 18:50:54,969 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 18:50:54,994 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 18:50:54,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:50:54,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:54,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 18:50:54,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 18:50:54,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743559140] [2021-06-10 18:50:54,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 18:50:54,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-10 18:50:54,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950769421] [2021-06-10 18:50:54,999 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-10 18:50:54,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 18:50:54,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-10 18:50:54,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-10 18:50:55,000 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-06-10 18:50:55,001 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) [2021-06-10 18:50:55,001 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 18:50:55,001 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-06-10 18:50:55,001 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 18:50:57,803 INFO L129 PetriNetUnfolder]: 843/1781 cut-off events. [2021-06-10 18:50:57,803 INFO L130 PetriNetUnfolder]: For 732/770 co-relation queries the response was YES. [2021-06-10 18:50:57,809 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. [2021-06-10 18:50:57,819 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 120 selfloop transitions, 178 changer transitions 5/324 dead transitions. [2021-06-10 18:50:57,819 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 324 transitions, 1967 flow [2021-06-10 18:50:57,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-10 18:50:57,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-06-10 18:50:57,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 1768 transitions. [2021-06-10 18:50:57,826 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6773946360153257 [2021-06-10 18:50:57,827 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 1768 transitions. [2021-06-10 18:50:57,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 1768 transitions. [2021-06-10 18:50:57,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 18:50:57,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 1768 transitions. [2021-06-10 18:50:57,832 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) [2021-06-10 18:50:57,837 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) [2021-06-10 18:50:57,838 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) [2021-06-10 18:50:57,838 INFO L185 Difference]: Start difference. First operand has 77 places, 95 transitions, 394 flow. Second operand 58 states and 1768 transitions. [2021-06-10 18:50:57,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 324 transitions, 1967 flow [2021-06-10 18:50:57,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 324 transitions, 1963 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 18:50:57,854 INFO L241 Difference]: Finished difference. Result has 152 places, 265 transitions, 1671 flow [2021-06-10 18:50:57,855 INFO L326 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} [2021-06-10 18:50:57,855 INFO L343 CegarLoopForPetriNet]: 52 programPoint places, 100 predicate places. [2021-06-10 18:50:57,855 INFO L480 AbstractCegarLoop]: Abstraction has has 152 places, 265 transitions, 1671 flow [2021-06-10 18:50:57,855 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) [2021-06-10 18:50:57,855 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 18:50:57,856 INFO L263 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] [2021-06-10 18:50:57,856 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 18:50:57,856 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 18:50:57,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 18:50:57,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1958520998, now seen corresponding path program 7 times [2021-06-10 18:50:57,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 18:50:57,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731356113] [2021-06-10 18:50:57,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 18:50:57,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 18:50:57,913 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-10 18:50:57,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 18:50:57,921 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 18:50:57,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 18:50:57,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:57,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:50:57,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:57,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:50:57,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:57,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:50:57,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:57,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:50:57,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:57,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:50:57,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:57,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:50:58,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:58,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:50:58,031 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:58,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:50:58,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:58,059 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:50:58,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:58,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:50:58,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:58,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:50:58,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:58,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:50:58,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:58,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:50:58,171 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-10 18:50:58,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 18:50:58,208 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 18:50:58,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:50:58,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:50:58,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 18:50:58,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 18:50:58,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731356113] [2021-06-10 18:50:58,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 18:50:58,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-10 18:50:58,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737838953] [2021-06-10 18:50:58,213 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-10 18:50:58,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 18:50:58,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-10 18:50:58,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-06-10 18:50:58,214 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-06-10 18:50:58,215 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) [2021-06-10 18:50:58,215 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 18:50:58,215 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-06-10 18:50:58,215 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 18:51:01,515 INFO L129 PetriNetUnfolder]: 1190/2495 cut-off events. [2021-06-10 18:51:01,515 INFO L130 PetriNetUnfolder]: For 8965/9098 co-relation queries the response was YES. [2021-06-10 18:51:01,528 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. [2021-06-10 18:51:01,545 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 280 selfloop transitions, 278 changer transitions 5/584 dead transitions. [2021-06-10 18:51:01,546 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 584 transitions, 5357 flow [2021-06-10 18:51:01,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-06-10 18:51:01,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-06-10 18:51:01,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 2234 transitions. [2021-06-10 18:51:01,552 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6708708708708708 [2021-06-10 18:51:01,552 INFO L72 ComplementDD]: Start complementDD. Operand 74 states and 2234 transitions. [2021-06-10 18:51:01,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 74 states and 2234 transitions. [2021-06-10 18:51:01,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 18:51:01,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 74 states and 2234 transitions. [2021-06-10 18:51:01,558 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) [2021-06-10 18:51:01,564 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) [2021-06-10 18:51:01,564 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) [2021-06-10 18:51:01,565 INFO L185 Difference]: Start difference. First operand has 152 places, 265 transitions, 1671 flow. Second operand 74 states and 2234 transitions. [2021-06-10 18:51:01,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 584 transitions, 5357 flow [2021-06-10 18:51:01,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 584 transitions, 5069 flow, removed 108 selfloop flow, removed 3 redundant places. [2021-06-10 18:51:01,623 INFO L241 Difference]: Finished difference. Result has 238 places, 550 transitions, 4560 flow [2021-06-10 18:51:01,624 INFO L326 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} [2021-06-10 18:51:01,624 INFO L343 CegarLoopForPetriNet]: 52 programPoint places, 186 predicate places. [2021-06-10 18:51:01,624 INFO L480 AbstractCegarLoop]: Abstraction has has 238 places, 550 transitions, 4560 flow [2021-06-10 18:51:01,624 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) [2021-06-10 18:51:01,624 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 18:51:01,624 INFO L263 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] [2021-06-10 18:51:01,625 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 18:51:01,625 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 18:51:01,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 18:51:01,625 INFO L82 PathProgramCache]: Analyzing trace with hash -618481434, now seen corresponding path program 8 times [2021-06-10 18:51:01,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 18:51:01,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096730997] [2021-06-10 18:51:01,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 18:51:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 18:51:01,658 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-10 18:51:01,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 18:51:01,664 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 18:51:01,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 18:51:01,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:01,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:51:01,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:01,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:51:01,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:01,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:01,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:01,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:51:01,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:01,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:51:01,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:01,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:51:01,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:01,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:51:01,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:01,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:01,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:01,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:01,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:01,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:51:01,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:01,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:01,855 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-10 18:51:01,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 18:51:01,879 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-10 18:51:01,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 18:51:01,900 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 18:51:01,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 18:51:01,922 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 18:51:01,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:01,936 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:01,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 18:51:01,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 18:51:01,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096730997] [2021-06-10 18:51:01,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 18:51:01,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-10 18:51:01,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625474962] [2021-06-10 18:51:01,937 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-10 18:51:01,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 18:51:01,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-10 18:51:01,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-10 18:51:01,938 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-06-10 18:51:01,939 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) [2021-06-10 18:51:01,939 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 18:51:01,939 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-06-10 18:51:01,939 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 18:51:05,222 INFO L129 PetriNetUnfolder]: 1673/3415 cut-off events. [2021-06-10 18:51:05,223 INFO L130 PetriNetUnfolder]: For 20537/20824 co-relation queries the response was YES. [2021-06-10 18:51:05,243 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. [2021-06-10 18:51:05,269 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 539 selfloop transitions, 434 changer transitions 5/999 dead transitions. [2021-06-10 18:51:05,269 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 999 transitions, 10885 flow [2021-06-10 18:51:05,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-10 18:51:05,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-06-10 18:51:05,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 1865 transitions. [2021-06-10 18:51:05,272 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6907407407407408 [2021-06-10 18:51:05,273 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 1865 transitions. [2021-06-10 18:51:05,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 1865 transitions. [2021-06-10 18:51:05,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 18:51:05,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 1865 transitions. [2021-06-10 18:51:05,277 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) [2021-06-10 18:51:05,280 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) [2021-06-10 18:51:05,280 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) [2021-06-10 18:51:05,280 INFO L185 Difference]: Start difference. First operand has 238 places, 550 transitions, 4560 flow. Second operand 60 states and 1865 transitions. [2021-06-10 18:51:05,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 999 transitions, 10885 flow [2021-06-10 18:51:05,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 999 transitions, 9268 flow, removed 761 selfloop flow, removed 2 redundant places. [2021-06-10 18:51:05,454 INFO L241 Difference]: Finished difference. Result has 319 places, 930 transitions, 8267 flow [2021-06-10 18:51:05,455 INFO L326 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} [2021-06-10 18:51:05,455 INFO L343 CegarLoopForPetriNet]: 52 programPoint places, 267 predicate places. [2021-06-10 18:51:05,455 INFO L480 AbstractCegarLoop]: Abstraction has has 319 places, 930 transitions, 8267 flow [2021-06-10 18:51:05,456 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) [2021-06-10 18:51:05,456 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 18:51:05,457 INFO L263 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] [2021-06-10 18:51:05,457 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-10 18:51:05,457 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 18:51:05,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 18:51:05,457 INFO L82 PathProgramCache]: Analyzing trace with hash -529751674, now seen corresponding path program 9 times [2021-06-10 18:51:05,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 18:51:05,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905525680] [2021-06-10 18:51:05,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 18:51:05,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 18:51:05,493 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-10 18:51:05,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 18:51:05,498 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 18:51:05,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 18:51:05,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:05,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:51:05,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:05,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:51:05,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:05,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:05,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:05,547 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:51:05,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:05,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:51:05,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:05,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:51:05,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:05,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:51:05,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:05,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:05,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:05,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:05,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:05,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:51:05,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:05,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:05,665 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-10 18:51:05,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 18:51:05,687 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-06-10 18:51:05,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 18:51:05,708 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 18:51:05,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 18:51:05,729 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 18:51:05,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:05,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:05,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 18:51:05,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 18:51:05,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905525680] [2021-06-10 18:51:05,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 18:51:05,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-10 18:51:05,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927351995] [2021-06-10 18:51:05,733 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-10 18:51:05,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 18:51:05,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-10 18:51:05,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-10 18:51:05,734 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-06-10 18:51:05,734 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) [2021-06-10 18:51:05,735 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 18:51:05,735 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-06-10 18:51:05,735 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 18:51:09,153 INFO L129 PetriNetUnfolder]: 2089/4245 cut-off events. [2021-06-10 18:51:09,153 INFO L130 PetriNetUnfolder]: For 38687/39195 co-relation queries the response was YES. [2021-06-10 18:51:09,187 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. [2021-06-10 18:51:09,219 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 828 selfloop transitions, 430 changer transitions 5/1284 dead transitions. [2021-06-10 18:51:09,219 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 1284 transitions, 15526 flow [2021-06-10 18:51:09,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-10 18:51:09,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2021-06-10 18:51:09,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 2065 transitions. [2021-06-10 18:51:09,222 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6849087893864013 [2021-06-10 18:51:09,223 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 2065 transitions. [2021-06-10 18:51:09,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 2065 transitions. [2021-06-10 18:51:09,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 18:51:09,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 2065 transitions. [2021-06-10 18:51:09,227 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) [2021-06-10 18:51:09,231 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) [2021-06-10 18:51:09,231 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) [2021-06-10 18:51:09,232 INFO L185 Difference]: Start difference. First operand has 319 places, 930 transitions, 8267 flow. Second operand 67 states and 2065 transitions. [2021-06-10 18:51:09,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 1284 transitions, 15526 flow [2021-06-10 18:51:09,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 1284 transitions, 13962 flow, removed 761 selfloop flow, removed 3 redundant places. [2021-06-10 18:51:09,557 INFO L241 Difference]: Finished difference. Result has 415 places, 1221 transitions, 11950 flow [2021-06-10 18:51:09,558 INFO L326 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} [2021-06-10 18:51:09,559 INFO L343 CegarLoopForPetriNet]: 52 programPoint places, 363 predicate places. [2021-06-10 18:51:09,559 INFO L480 AbstractCegarLoop]: Abstraction has has 415 places, 1221 transitions, 11950 flow [2021-06-10 18:51:09,559 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) [2021-06-10 18:51:09,559 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 18:51:09,559 INFO L263 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] [2021-06-10 18:51:09,559 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-10 18:51:09,559 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 18:51:09,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 18:51:09,560 INFO L82 PathProgramCache]: Analyzing trace with hash 2114991102, now seen corresponding path program 10 times [2021-06-10 18:51:09,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 18:51:09,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877241182] [2021-06-10 18:51:09,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 18:51:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 18:51:09,586 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-10 18:51:09,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 18:51:09,591 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 18:51:09,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 18:51:09,599 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 18:51:09,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 18:51:09,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:09,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:51:09,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:09,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:09,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:09,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:51:09,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:09,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:51:09,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:09,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:51:09,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:09,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:09,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:09,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:09,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:09,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:51:09,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:09,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:09,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:09,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:09,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:09,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:09,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:09,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:51:09,797 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-10 18:51:09,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 18:51:09,818 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 18:51:09,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:09,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:09,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 18:51:09,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 18:51:09,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877241182] [2021-06-10 18:51:09,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 18:51:09,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-10 18:51:09,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998447081] [2021-06-10 18:51:09,822 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-10 18:51:09,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 18:51:09,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-10 18:51:09,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-06-10 18:51:09,823 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-06-10 18:51:09,823 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) [2021-06-10 18:51:09,823 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 18:51:09,823 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-06-10 18:51:09,823 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 18:51:13,003 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2021-06-10 18:51:14,254 INFO L129 PetriNetUnfolder]: 2555/5162 cut-off events. [2021-06-10 18:51:14,255 INFO L130 PetriNetUnfolder]: For 96695/97527 co-relation queries the response was YES. [2021-06-10 18:51:14,397 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. [2021-06-10 18:51:14,440 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 992 selfloop transitions, 702 changer transitions 8/1723 dead transitions. [2021-06-10 18:51:14,440 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 1723 transitions, 24417 flow [2021-06-10 18:51:14,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2021-06-10 18:51:14,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2021-06-10 18:51:14,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 2841 transitions. [2021-06-10 18:51:14,494 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.678853046594982 [2021-06-10 18:51:14,494 INFO L72 ComplementDD]: Start complementDD. Operand 93 states and 2841 transitions. [2021-06-10 18:51:14,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 93 states and 2841 transitions. [2021-06-10 18:51:14,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 18:51:14,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 93 states and 2841 transitions. [2021-06-10 18:51:14,503 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) [2021-06-10 18:51:14,508 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) [2021-06-10 18:51:14,509 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) [2021-06-10 18:51:14,509 INFO L185 Difference]: Start difference. First operand has 415 places, 1221 transitions, 11950 flow. Second operand 93 states and 2841 transitions. [2021-06-10 18:51:14,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 1723 transitions, 24417 flow [2021-06-10 18:51:15,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 1723 transitions, 22189 flow, removed 1097 selfloop flow, removed 3 redundant places. [2021-06-10 18:51:15,568 INFO L241 Difference]: Finished difference. Result has 515 places, 1663 transitions, 20138 flow [2021-06-10 18:51:15,570 INFO L326 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} [2021-06-10 18:51:15,570 INFO L343 CegarLoopForPetriNet]: 52 programPoint places, 463 predicate places. [2021-06-10 18:51:15,570 INFO L480 AbstractCegarLoop]: Abstraction has has 515 places, 1663 transitions, 20138 flow [2021-06-10 18:51:15,570 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) [2021-06-10 18:51:15,570 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 18:51:15,571 INFO L263 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] [2021-06-10 18:51:15,571 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-10 18:51:15,571 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 18:51:15,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 18:51:15,571 INFO L82 PathProgramCache]: Analyzing trace with hash 283519690, now seen corresponding path program 11 times [2021-06-10 18:51:15,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 18:51:15,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445671582] [2021-06-10 18:51:15,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 18:51:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 18:51:15,634 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-10 18:51:15,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 18:51:15,641 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 18:51:15,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 18:51:15,650 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 18:51:15,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 18:51:15,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:15,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:51:15,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:15,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:15,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:15,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:15,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:15,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:15,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:15,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:15,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:15,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:15,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:15,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:15,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:15,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:51:15,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:15,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:15,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:15,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:15,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:15,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:15,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:15,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:51:15,875 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-10 18:51:15,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 18:51:15,900 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 18:51:15,901 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:15,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:15,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 18:51:15,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 18:51:15,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445671582] [2021-06-10 18:51:15,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 18:51:15,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-10 18:51:15,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719939614] [2021-06-10 18:51:15,906 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-10 18:51:15,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 18:51:15,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-10 18:51:15,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-06-10 18:51:15,907 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-06-10 18:51:15,907 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) [2021-06-10 18:51:15,908 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 18:51:15,908 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-06-10 18:51:15,908 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 18:51:19,201 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2021-06-10 18:51:20,496 INFO L129 PetriNetUnfolder]: 3171/6426 cut-off events. [2021-06-10 18:51:20,496 INFO L130 PetriNetUnfolder]: For 127619/129236 co-relation queries the response was YES. [2021-06-10 18:51:20,570 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. [2021-06-10 18:51:20,627 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 1294 selfloop transitions, 1022 changer transitions 8/2345 dead transitions. [2021-06-10 18:51:20,627 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 2345 transitions, 34474 flow [2021-06-10 18:51:20,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-10 18:51:20,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-06-10 18:51:20,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 2212 transitions. [2021-06-10 18:51:20,631 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6733637747336377 [2021-06-10 18:51:20,631 INFO L72 ComplementDD]: Start complementDD. Operand 73 states and 2212 transitions. [2021-06-10 18:51:20,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 73 states and 2212 transitions. [2021-06-10 18:51:20,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 18:51:20,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 73 states and 2212 transitions. [2021-06-10 18:51:20,635 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) [2021-06-10 18:51:20,639 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) [2021-06-10 18:51:20,640 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) [2021-06-10 18:51:20,640 INFO L185 Difference]: Start difference. First operand has 515 places, 1663 transitions, 20138 flow. Second operand 73 states and 2212 transitions. [2021-06-10 18:51:20,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 584 places, 2345 transitions, 34474 flow [2021-06-10 18:51:21,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 2345 transitions, 26464 flow, removed 3893 selfloop flow, removed 5 redundant places. [2021-06-10 18:51:22,010 INFO L241 Difference]: Finished difference. Result has 603 places, 2224 transitions, 23762 flow [2021-06-10 18:51:22,012 INFO L326 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} [2021-06-10 18:51:22,012 INFO L343 CegarLoopForPetriNet]: 52 programPoint places, 551 predicate places. [2021-06-10 18:51:22,012 INFO L480 AbstractCegarLoop]: Abstraction has has 603 places, 2224 transitions, 23762 flow [2021-06-10 18:51:22,013 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) [2021-06-10 18:51:22,013 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 18:51:22,013 INFO L263 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] [2021-06-10 18:51:22,013 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-10 18:51:22,013 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 18:51:22,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 18:51:22,014 INFO L82 PathProgramCache]: Analyzing trace with hash -79766378, now seen corresponding path program 12 times [2021-06-10 18:51:22,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 18:51:22,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095921897] [2021-06-10 18:51:22,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 18:51:22,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 18:51:22,064 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-10 18:51:22,069 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 18:51:22,073 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 18:51:22,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 18:51:22,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:22,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:51:22,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:22,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:22,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:22,099 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:22,110 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:22,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:51:22,122 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:22,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:51:22,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:22,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:51:22,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:22,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:22,172 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:22,172 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:22,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:22,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:51:22,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:22,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:22,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:22,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:22,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:22,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:51:22,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:22,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:51:22,291 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-10 18:51:22,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 18:51:22,314 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 18:51:22,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:22,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:22,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 18:51:22,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 18:51:22,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095921897] [2021-06-10 18:51:22,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 18:51:22,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-10 18:51:22,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713424222] [2021-06-10 18:51:22,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-10 18:51:22,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 18:51:22,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-10 18:51:22,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-06-10 18:51:22,319 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-06-10 18:51:22,320 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) [2021-06-10 18:51:22,320 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 18:51:22,320 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-06-10 18:51:22,320 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 18:51:25,197 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2021-06-10 18:51:27,507 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 20 [2021-06-10 18:51:28,630 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2021-06-10 18:51:29,611 INFO L129 PetriNetUnfolder]: 4059/8271 cut-off events. [2021-06-10 18:51:29,611 INFO L130 PetriNetUnfolder]: For 162980/165114 co-relation queries the response was YES. [2021-06-10 18:51:29,716 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. [2021-06-10 18:51:29,875 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 2032 selfloop transitions, 1075 changer transitions 12/3140 dead transitions. [2021-06-10 18:51:29,875 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 716 places, 3140 transitions, 47059 flow [2021-06-10 18:51:29,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2021-06-10 18:51:29,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2021-06-10 18:51:29,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 3547 transitions. [2021-06-10 18:51:29,880 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6795019157088122 [2021-06-10 18:51:29,880 INFO L72 ComplementDD]: Start complementDD. Operand 116 states and 3547 transitions. [2021-06-10 18:51:29,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 116 states and 3547 transitions. [2021-06-10 18:51:29,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 18:51:29,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 116 states and 3547 transitions. [2021-06-10 18:51:29,886 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) [2021-06-10 18:51:29,891 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) [2021-06-10 18:51:29,892 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) [2021-06-10 18:51:29,893 INFO L185 Difference]: Start difference. First operand has 603 places, 2224 transitions, 23762 flow. Second operand 116 states and 3547 transitions. [2021-06-10 18:51:29,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 716 places, 3140 transitions, 47059 flow [2021-06-10 18:51:31,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 710 places, 3140 transitions, 42064 flow, removed 2399 selfloop flow, removed 6 redundant places. [2021-06-10 18:51:31,765 INFO L241 Difference]: Finished difference. Result has 744 places, 3023 transitions, 38218 flow [2021-06-10 18:51:31,768 INFO L326 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} [2021-06-10 18:51:31,768 INFO L343 CegarLoopForPetriNet]: 52 programPoint places, 692 predicate places. [2021-06-10 18:51:31,768 INFO L480 AbstractCegarLoop]: Abstraction has has 744 places, 3023 transitions, 38218 flow [2021-06-10 18:51:31,768 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) [2021-06-10 18:51:31,768 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 18:51:31,769 INFO L263 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] [2021-06-10 18:51:31,769 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-10 18:51:31,769 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 18:51:31,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 18:51:31,769 INFO L82 PathProgramCache]: Analyzing trace with hash 871351210, now seen corresponding path program 13 times [2021-06-10 18:51:31,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 18:51:31,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607292457] [2021-06-10 18:51:31,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 18:51:31,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 18:51:31,792 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-10 18:51:31,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 18:51:31,797 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 18:51:31,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 18:51:31,804 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 18:51:31,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 18:51:31,813 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-06-10 18:51:31,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 18:51:31,823 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-06-10 18:51:31,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-10 18:51:31,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:31,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:31,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:31,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:31,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:31,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:51:31,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:31,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:31,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:31,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:51:31,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:31,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:51:31,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:31,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:51:31,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:31,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:31,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:31,978 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:51:31,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:31,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:51:32,018 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-10 18:51:32,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 18:51:32,045 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 18:51:32,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:32,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:32,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 18:51:32,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 18:51:32,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607292457] [2021-06-10 18:51:32,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 18:51:32,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-10 18:51:32,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941607905] [2021-06-10 18:51:32,049 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-10 18:51:32,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 18:51:32,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-10 18:51:32,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-10 18:51:32,050 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-06-10 18:51:32,051 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) [2021-06-10 18:51:32,051 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 18:51:32,051 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-06-10 18:51:32,051 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 18:51:38,020 INFO L129 PetriNetUnfolder]: 4217/8703 cut-off events. [2021-06-10 18:51:38,020 INFO L130 PetriNetUnfolder]: For 158232/161191 co-relation queries the response was YES. [2021-06-10 18:51:38,147 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. [2021-06-10 18:51:38,201 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 2694 selfloop transitions, 533 changer transitions 13/3261 dead transitions. [2021-06-10 18:51:38,201 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 799 places, 3261 transitions, 49381 flow [2021-06-10 18:51:38,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-10 18:51:38,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-06-10 18:51:38,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 1816 transitions. [2021-06-10 18:51:38,205 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6615664845173042 [2021-06-10 18:51:38,205 INFO L72 ComplementDD]: Start complementDD. Operand 61 states and 1816 transitions. [2021-06-10 18:51:38,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 1816 transitions. [2021-06-10 18:51:38,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 18:51:38,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 61 states and 1816 transitions. [2021-06-10 18:51:38,208 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) [2021-06-10 18:51:38,211 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) [2021-06-10 18:51:38,211 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) [2021-06-10 18:51:38,211 INFO L185 Difference]: Start difference. First operand has 744 places, 3023 transitions, 38218 flow. Second operand 61 states and 1816 transitions. [2021-06-10 18:51:38,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 799 places, 3261 transitions, 49381 flow [2021-06-10 18:51:40,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 793 places, 3261 transitions, 41807 flow, removed 3716 selfloop flow, removed 6 redundant places. [2021-06-10 18:51:40,593 INFO L241 Difference]: Finished difference. Result has 811 places, 3198 transitions, 35453 flow [2021-06-10 18:51:40,596 INFO L326 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} [2021-06-10 18:51:40,596 INFO L343 CegarLoopForPetriNet]: 52 programPoint places, 759 predicate places. [2021-06-10 18:51:40,596 INFO L480 AbstractCegarLoop]: Abstraction has has 811 places, 3198 transitions, 35453 flow [2021-06-10 18:51:40,597 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) [2021-06-10 18:51:40,597 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 18:51:40,597 INFO L263 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] [2021-06-10 18:51:40,597 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-10 18:51:40,597 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 18:51:40,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 18:51:40,597 INFO L82 PathProgramCache]: Analyzing trace with hash -100239470, now seen corresponding path program 14 times [2021-06-10 18:51:40,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 18:51:40,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412144762] [2021-06-10 18:51:40,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 18:51:40,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 18:51:40,635 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-10 18:51:40,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 18:51:40,643 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 18:51:40,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 18:51:40,656 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 18:51:40,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 18:51:40,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:40,666 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:51:40,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:40,677 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:40,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:40,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:40,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:40,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:51:40,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:40,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:51:40,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:40,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:40,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:40,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:40,769 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:40,770 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:51:40,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:40,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:40,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:40,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:40,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:40,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:51:40,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:40,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:51:40,892 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-10 18:51:40,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 18:51:40,919 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 18:51:40,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:40,922 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:40,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 18:51:40,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 18:51:40,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412144762] [2021-06-10 18:51:40,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 18:51:40,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-10 18:51:40,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013171687] [2021-06-10 18:51:40,924 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-10 18:51:40,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 18:51:40,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-10 18:51:40,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-06-10 18:51:40,925 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-06-10 18:51:40,925 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) [2021-06-10 18:51:40,925 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 18:51:40,925 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-06-10 18:51:40,925 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 18:51:47,786 INFO L129 PetriNetUnfolder]: 4911/9910 cut-off events. [2021-06-10 18:51:47,787 INFO L130 PetriNetUnfolder]: For 176145/179720 co-relation queries the response was YES. [2021-06-10 18:51:47,930 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. [2021-06-10 18:51:47,981 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 2913 selfloop transitions, 953 changer transitions 3/3890 dead transitions. [2021-06-10 18:51:47,981 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 876 places, 3890 transitions, 53230 flow [2021-06-10 18:51:47,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-06-10 18:51:47,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2021-06-10 18:51:47,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 2244 transitions. [2021-06-10 18:51:47,984 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6738738738738739 [2021-06-10 18:51:47,985 INFO L72 ComplementDD]: Start complementDD. Operand 74 states and 2244 transitions. [2021-06-10 18:51:47,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 74 states and 2244 transitions. [2021-06-10 18:51:47,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 18:51:47,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 74 states and 2244 transitions. [2021-06-10 18:51:47,988 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) [2021-06-10 18:51:47,991 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) [2021-06-10 18:51:47,991 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) [2021-06-10 18:51:47,991 INFO L185 Difference]: Start difference. First operand has 811 places, 3198 transitions, 35453 flow. Second operand 74 states and 2244 transitions. [2021-06-10 18:51:47,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 876 places, 3890 transitions, 53230 flow [2021-06-10 18:51:50,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 866 places, 3890 transitions, 51043 flow, removed 988 selfloop flow, removed 10 redundant places. [2021-06-10 18:51:50,710 INFO L241 Difference]: Finished difference. Result has 902 places, 3798 transitions, 44596 flow [2021-06-10 18:51:50,713 INFO L326 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} [2021-06-10 18:51:50,713 INFO L343 CegarLoopForPetriNet]: 52 programPoint places, 850 predicate places. [2021-06-10 18:51:50,713 INFO L480 AbstractCegarLoop]: Abstraction has has 902 places, 3798 transitions, 44596 flow [2021-06-10 18:51:50,713 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) [2021-06-10 18:51:50,713 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 18:51:50,713 INFO L263 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] [2021-06-10 18:51:50,713 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-10 18:51:50,713 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 18:51:50,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 18:51:50,713 INFO L82 PathProgramCache]: Analyzing trace with hash -2008836700, now seen corresponding path program 15 times [2021-06-10 18:51:50,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 18:51:50,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521854057] [2021-06-10 18:51:50,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 18:51:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 18:51:50,735 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-10 18:51:50,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 18:51:50,740 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 18:51:50,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 18:51:50,748 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 18:51:50,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 18:51:50,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:50,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:51:50,767 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:50,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:50,785 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:50,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:50,797 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:50,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:50,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:50,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:51:50,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:50,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:50,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:50,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:50,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:50,843 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:51:50,858 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:50,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:50,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:50,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:51:50,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:50,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:51:50,917 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:50,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:51:50,937 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-10 18:51:50,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 18:51:50,958 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 18:51:50,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:51:50,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:51:50,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 18:51:50,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 18:51:50,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521854057] [2021-06-10 18:51:50,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 18:51:50,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-10 18:51:50,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592507907] [2021-06-10 18:51:50,964 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-10 18:51:50,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 18:51:50,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-10 18:51:50,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-10 18:51:50,965 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-06-10 18:51:50,965 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) [2021-06-10 18:51:50,965 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 18:51:50,965 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-06-10 18:51:50,965 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 18:51:58,553 INFO L129 PetriNetUnfolder]: 5236/10613 cut-off events. [2021-06-10 18:51:58,553 INFO L130 PetriNetUnfolder]: For 239453/242914 co-relation queries the response was YES. [2021-06-10 18:51:58,849 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. [2021-06-10 18:51:58,906 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 3520 selfloop transitions, 570 changer transitions 6/4117 dead transitions. [2021-06-10 18:51:58,906 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 960 places, 4117 transitions, 59921 flow [2021-06-10 18:51:58,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-10 18:51:58,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-06-10 18:51:58,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 1851 transitions. [2021-06-10 18:51:58,909 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6743169398907104 [2021-06-10 18:51:58,909 INFO L72 ComplementDD]: Start complementDD. Operand 61 states and 1851 transitions. [2021-06-10 18:51:58,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 1851 transitions. [2021-06-10 18:51:58,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 18:51:58,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 61 states and 1851 transitions. [2021-06-10 18:51:58,911 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) [2021-06-10 18:51:58,914 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) [2021-06-10 18:51:58,914 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) [2021-06-10 18:51:58,914 INFO L185 Difference]: Start difference. First operand has 902 places, 3798 transitions, 44596 flow. Second operand 61 states and 1851 transitions. [2021-06-10 18:51:58,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 960 places, 4117 transitions, 59921 flow [2021-06-10 18:52:02,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 955 places, 4117 transitions, 56003 flow, removed 1818 selfloop flow, removed 5 redundant places. [2021-06-10 18:52:02,389 INFO L241 Difference]: Finished difference. Result has 976 places, 4068 transitions, 48705 flow [2021-06-10 18:52:02,392 INFO L326 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} [2021-06-10 18:52:02,392 INFO L343 CegarLoopForPetriNet]: 52 programPoint places, 924 predicate places. [2021-06-10 18:52:02,392 INFO L480 AbstractCegarLoop]: Abstraction has has 976 places, 4068 transitions, 48705 flow [2021-06-10 18:52:02,392 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) [2021-06-10 18:52:02,392 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 18:52:02,392 INFO L263 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] [2021-06-10 18:52:02,392 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-10 18:52:02,393 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 18:52:02,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 18:52:02,393 INFO L82 PathProgramCache]: Analyzing trace with hash 535978322, now seen corresponding path program 16 times [2021-06-10 18:52:02,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 18:52:02,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427975210] [2021-06-10 18:52:02,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 18:52:02,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 18:52:02,414 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-10 18:52:02,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 18:52:02,419 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 18:52:02,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 18:52:02,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:02,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:52:02,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:02,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:52:02,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:02,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:52:02,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:02,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:52:02,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:02,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:52:02,488 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:02,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:52:02,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:02,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:52:02,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:02,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:52:02,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:02,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:52:02,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:02,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:52:02,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:02,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:52:02,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:02,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:52:02,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:02,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:52:02,634 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-10 18:52:02,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 18:52:02,675 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 18:52:02,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:52:02,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:02,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 18:52:02,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 18:52:02,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427975210] [2021-06-10 18:52:02,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 18:52:02,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-10 18:52:02,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573118398] [2021-06-10 18:52:02,680 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-10 18:52:02,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 18:52:02,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-10 18:52:02,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-06-10 18:52:02,681 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-06-10 18:52:02,681 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) [2021-06-10 18:52:02,681 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 18:52:02,681 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-06-10 18:52:02,681 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 18:52:09,537 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2021-06-10 18:52:13,237 INFO L129 PetriNetUnfolder]: 6016/12255 cut-off events. [2021-06-10 18:52:13,237 INFO L130 PetriNetUnfolder]: For 263434/266998 co-relation queries the response was YES. [2021-06-10 18:52:13,478 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. [2021-06-10 18:52:13,549 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 3612 selfloop transitions, 1334 changer transitions 12/4979 dead transitions. [2021-06-10 18:52:13,549 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1052 places, 4979 transitions, 73087 flow [2021-06-10 18:52:13,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-06-10 18:52:13,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-06-10 18:52:13,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 2479 transitions. [2021-06-10 18:52:13,552 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6801097393689987 [2021-06-10 18:52:13,552 INFO L72 ComplementDD]: Start complementDD. Operand 81 states and 2479 transitions. [2021-06-10 18:52:13,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 81 states and 2479 transitions. [2021-06-10 18:52:13,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 18:52:13,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 81 states and 2479 transitions. [2021-06-10 18:52:13,556 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) [2021-06-10 18:52:13,559 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) [2021-06-10 18:52:13,559 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) [2021-06-10 18:52:13,560 INFO L185 Difference]: Start difference. First operand has 976 places, 4068 transitions, 48705 flow. Second operand 81 states and 2479 transitions. [2021-06-10 18:52:13,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1052 places, 4979 transitions, 73087 flow [2021-06-10 18:52:18,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1047 places, 4979 transitions, 68965 flow, removed 1961 selfloop flow, removed 5 redundant places. [2021-06-10 18:52:18,509 INFO L241 Difference]: Finished difference. Result has 1085 places, 4833 transitions, 61577 flow [2021-06-10 18:52:18,513 INFO L326 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} [2021-06-10 18:52:18,513 INFO L343 CegarLoopForPetriNet]: 52 programPoint places, 1033 predicate places. [2021-06-10 18:52:18,513 INFO L480 AbstractCegarLoop]: Abstraction has has 1085 places, 4833 transitions, 61577 flow [2021-06-10 18:52:18,514 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) [2021-06-10 18:52:18,514 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 18:52:18,514 INFO L263 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] [2021-06-10 18:52:18,514 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-10 18:52:18,514 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 18:52:18,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 18:52:18,514 INFO L82 PathProgramCache]: Analyzing trace with hash -406520248, now seen corresponding path program 17 times [2021-06-10 18:52:18,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 18:52:18,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432812169] [2021-06-10 18:52:18,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 18:52:18,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 18:52:18,535 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-10 18:52:18,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 18:52:18,540 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 18:52:18,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 18:52:18,549 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 18:52:18,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 18:52:18,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:18,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:52:18,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:18,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:52:18,584 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:18,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:52:18,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:18,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:52:18,605 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:18,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:52:18,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:18,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:52:18,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:18,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:52:18,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:18,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:52:18,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:18,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:52:18,676 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:18,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:52:18,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:18,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:52:18,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:18,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:52:18,730 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-10 18:52:18,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 18:52:18,751 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 18:52:18,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:52:18,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:18,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 18:52:18,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 18:52:18,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432812169] [2021-06-10 18:52:18,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 18:52:18,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-06-10 18:52:18,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519635191] [2021-06-10 18:52:18,755 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-10 18:52:18,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 18:52:18,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-10 18:52:18,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-06-10 18:52:18,756 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-06-10 18:52:18,756 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) [2021-06-10 18:52:18,756 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 18:52:18,756 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-06-10 18:52:18,756 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 18:52:29,639 INFO L129 PetriNetUnfolder]: 6113/12574 cut-off events. [2021-06-10 18:52:29,639 INFO L130 PetriNetUnfolder]: For 288347/293505 co-relation queries the response was YES. [2021-06-10 18:52:30,041 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. [2021-06-10 18:52:30,148 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 4360 selfloop transitions, 602 changer transitions 4/4987 dead transitions. [2021-06-10 18:52:30,148 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1137 places, 4987 transitions, 76439 flow [2021-06-10 18:52:30,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-10 18:52:30,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-06-10 18:52:30,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 1683 transitions. [2021-06-10 18:52:30,150 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6678571428571428 [2021-06-10 18:52:30,150 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 1683 transitions. [2021-06-10 18:52:30,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 1683 transitions. [2021-06-10 18:52:30,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 18:52:30,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 1683 transitions. [2021-06-10 18:52:30,153 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) [2021-06-10 18:52:30,155 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) [2021-06-10 18:52:30,155 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) [2021-06-10 18:52:30,155 INFO L185 Difference]: Start difference. First operand has 1085 places, 4833 transitions, 61577 flow. Second operand 56 states and 1683 transitions. [2021-06-10 18:52:30,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1137 places, 4987 transitions, 76439 flow [2021-06-10 18:52:36,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1131 places, 4987 transitions, 72141 flow, removed 2060 selfloop flow, removed 6 redundant places. [2021-06-10 18:52:36,298 INFO L241 Difference]: Finished difference. Result has 1143 places, 4938 transitions, 61967 flow [2021-06-10 18:52:36,302 INFO L326 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} [2021-06-10 18:52:36,303 INFO L343 CegarLoopForPetriNet]: 52 programPoint places, 1091 predicate places. [2021-06-10 18:52:36,303 INFO L480 AbstractCegarLoop]: Abstraction has has 1143 places, 4938 transitions, 61967 flow [2021-06-10 18:52:36,303 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) [2021-06-10 18:52:36,303 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 18:52:36,303 INFO L263 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] [2021-06-10 18:52:36,303 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-10 18:52:36,303 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 18:52:36,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 18:52:36,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1646044542, now seen corresponding path program 18 times [2021-06-10 18:52:36,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 18:52:36,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855927938] [2021-06-10 18:52:36,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 18:52:36,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 18:52:36,334 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-10 18:52:36,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 18:52:36,339 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 18:52:36,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 18:52:36,347 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:36,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:52:36,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:36,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:52:36,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:36,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:52:36,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:36,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:52:36,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:36,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:52:36,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:36,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:52:36,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:36,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:52:36,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:36,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:52:36,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:36,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:52:36,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:36,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:52:36,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:36,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:52:36,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:36,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:52:36,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:36,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:52:36,586 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-10 18:52:36,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 18:52:36,609 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 18:52:36,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:52:36,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:36,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 18:52:36,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 18:52:36,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855927938] [2021-06-10 18:52:36,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 18:52:36,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-10 18:52:36,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876970410] [2021-06-10 18:52:36,613 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-10 18:52:36,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 18:52:36,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-10 18:52:36,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-06-10 18:52:36,614 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-06-10 18:52:36,614 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) [2021-06-10 18:52:36,614 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 18:52:36,614 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-06-10 18:52:36,614 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 18:52:43,904 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2021-06-10 18:52:50,071 INFO L129 PetriNetUnfolder]: 6744/13874 cut-off events. [2021-06-10 18:52:50,071 INFO L130 PetriNetUnfolder]: For 372718/378562 co-relation queries the response was YES. [2021-06-10 18:52:50,379 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. [2021-06-10 18:52:50,466 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 4269 selfloop transitions, 1323 changer transitions 8/5621 dead transitions. [2021-06-10 18:52:50,466 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1230 places, 5621 transitions, 90420 flow [2021-06-10 18:52:50,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-06-10 18:52:50,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2021-06-10 18:52:50,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 2759 transitions. [2021-06-10 18:52:50,469 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6737484737484738 [2021-06-10 18:52:50,469 INFO L72 ComplementDD]: Start complementDD. Operand 91 states and 2759 transitions. [2021-06-10 18:52:50,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 91 states and 2759 transitions. [2021-06-10 18:52:50,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 18:52:50,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 91 states and 2759 transitions. [2021-06-10 18:52:50,473 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) [2021-06-10 18:52:50,477 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) [2021-06-10 18:52:50,477 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) [2021-06-10 18:52:50,477 INFO L185 Difference]: Start difference. First operand has 1143 places, 4938 transitions, 61967 flow. Second operand 91 states and 2759 transitions. [2021-06-10 18:52:50,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1230 places, 5621 transitions, 90420 flow [2021-06-10 18:52:57,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1222 places, 5621 transitions, 87688 flow, removed 1170 selfloop flow, removed 8 redundant places. [2021-06-10 18:52:57,688 INFO L241 Difference]: Finished difference. Result has 1244 places, 5539 transitions, 79079 flow [2021-06-10 18:52:57,692 INFO L326 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} [2021-06-10 18:52:57,692 INFO L343 CegarLoopForPetriNet]: 52 programPoint places, 1192 predicate places. [2021-06-10 18:52:57,692 INFO L480 AbstractCegarLoop]: Abstraction has has 1244 places, 5539 transitions, 79079 flow [2021-06-10 18:52:57,692 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) [2021-06-10 18:52:57,692 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 18:52:57,693 INFO L263 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] [2021-06-10 18:52:57,693 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-10 18:52:57,693 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 18:52:57,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 18:52:57,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1612063476, now seen corresponding path program 19 times [2021-06-10 18:52:57,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 18:52:57,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986313780] [2021-06-10 18:52:57,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 18:52:57,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 18:52:57,713 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-10 18:52:57,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 18:52:57,719 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 18:52:57,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 18:52:57,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:57,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:52:57,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:57,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:52:57,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:57,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:52:57,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:57,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:52:57,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:57,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:52:57,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:57,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:52:57,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:57,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:52:57,836 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:57,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:52:57,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:57,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:52:57,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:57,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:52:57,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:57,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:52:57,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:57,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:52:57,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:57,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:52:57,950 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-10 18:52:57,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 18:52:57,973 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 18:52:57,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:52:57,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:52:57,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 18:52:57,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 18:52:57,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986313780] [2021-06-10 18:52:57,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 18:52:57,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-10 18:52:57,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112355389] [2021-06-10 18:52:57,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-10 18:52:57,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 18:52:57,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-10 18:52:57,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-06-10 18:52:57,978 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-06-10 18:52:57,978 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) [2021-06-10 18:52:57,978 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 18:52:57,978 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-06-10 18:52:57,978 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 18:53:11,818 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2021-06-10 18:53:14,162 INFO L129 PetriNetUnfolder]: 7091/14520 cut-off events. [2021-06-10 18:53:14,162 INFO L130 PetriNetUnfolder]: For 487076/493670 co-relation queries the response was YES. [2021-06-10 18:53:14,516 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. [2021-06-10 18:53:14,719 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 5006 selfloop transitions, 826 changer transitions 4/5857 dead transitions. [2021-06-10 18:53:14,720 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1317 places, 5857 transitions, 103644 flow [2021-06-10 18:53:14,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-06-10 18:53:14,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2021-06-10 18:53:14,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 2413 transitions. [2021-06-10 18:53:14,722 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6702777777777778 [2021-06-10 18:53:14,722 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 2413 transitions. [2021-06-10 18:53:14,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 2413 transitions. [2021-06-10 18:53:14,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 18:53:14,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 2413 transitions. [2021-06-10 18:53:14,725 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) [2021-06-10 18:53:14,727 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) [2021-06-10 18:53:14,728 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) [2021-06-10 18:53:14,728 INFO L185 Difference]: Start difference. First operand has 1244 places, 5539 transitions, 79079 flow. Second operand 80 states and 2413 transitions. [2021-06-10 18:53:14,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1317 places, 5857 transitions, 103644 flow [2021-06-10 18:53:25,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1310 places, 5857 transitions, 94005 flow, removed 4755 selfloop flow, removed 7 redundant places. [2021-06-10 18:53:25,815 INFO L241 Difference]: Finished difference. Result has 1315 places, 5837 transitions, 83939 flow [2021-06-10 18:53:25,820 INFO L326 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} [2021-06-10 18:53:25,821 INFO L343 CegarLoopForPetriNet]: 52 programPoint places, 1263 predicate places. [2021-06-10 18:53:25,821 INFO L480 AbstractCegarLoop]: Abstraction has has 1315 places, 5837 transitions, 83939 flow [2021-06-10 18:53:25,821 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) [2021-06-10 18:53:25,821 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 18:53:25,821 INFO L263 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] [2021-06-10 18:53:25,821 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-10 18:53:25,821 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 18:53:25,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 18:53:25,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1458000232, now seen corresponding path program 20 times [2021-06-10 18:53:25,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 18:53:25,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070356595] [2021-06-10 18:53:25,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 18:53:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 18:53:25,841 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-10 18:53:25,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 18:53:25,846 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 18:53:25,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 18:53:25,861 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:53:25,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:53:25,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:53:25,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:53:25,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:53:25,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:53:25,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:53:25,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:53:25,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:53:25,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:53:25,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:53:25,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:53:25,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:53:25,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:53:26,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:53:26,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:53:26,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:53:26,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:53:26,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:53:26,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:53:26,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:53:26,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:53:26,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:53:26,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:53:26,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:53:26,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:53:26,145 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-10 18:53:26,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 18:53:26,174 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 18:53:26,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:53:26,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:53:26,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 18:53:26,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 18:53:26,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070356595] [2021-06-10 18:53:26,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 18:53:26,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-10 18:53:26,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589363284] [2021-06-10 18:53:26,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-10 18:53:26,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 18:53:26,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-10 18:53:26,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-06-10 18:53:26,180 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-06-10 18:53:26,180 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) [2021-06-10 18:53:26,180 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 18:53:26,180 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-06-10 18:53:26,180 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 18:53:44,707 INFO L129 PetriNetUnfolder]: 7769/15751 cut-off events. [2021-06-10 18:53:44,707 INFO L130 PetriNetUnfolder]: For 541448/547976 co-relation queries the response was YES. [2021-06-10 18:53:45,060 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. [2021-06-10 18:53:45,164 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 4570 selfloop transitions, 1986 changer transitions 10/6587 dead transitions. [2021-06-10 18:53:45,164 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1390 places, 6587 transitions, 120693 flow [2021-06-10 18:53:45,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-06-10 18:53:45,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-06-10 18:53:45,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 2417 transitions. [2021-06-10 18:53:45,166 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.679887482419128 [2021-06-10 18:53:45,166 INFO L72 ComplementDD]: Start complementDD. Operand 79 states and 2417 transitions. [2021-06-10 18:53:45,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 2417 transitions. [2021-06-10 18:53:45,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 18:53:45,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 79 states and 2417 transitions. [2021-06-10 18:53:45,169 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) [2021-06-10 18:53:45,172 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) [2021-06-10 18:53:45,172 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) [2021-06-10 18:53:45,172 INFO L185 Difference]: Start difference. First operand has 1315 places, 5837 transitions, 83939 flow. Second operand 79 states and 2417 transitions. [2021-06-10 18:53:45,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1390 places, 6587 transitions, 120693 flow [2021-06-10 18:53:56,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1379 places, 6587 transitions, 104422 flow, removed 7837 selfloop flow, removed 11 redundant places. [2021-06-10 18:53:56,360 INFO L241 Difference]: Finished difference. Result has 1414 places, 6407 transitions, 93955 flow [2021-06-10 18:53:56,366 INFO L326 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} [2021-06-10 18:53:56,366 INFO L343 CegarLoopForPetriNet]: 52 programPoint places, 1362 predicate places. [2021-06-10 18:53:56,366 INFO L480 AbstractCegarLoop]: Abstraction has has 1414 places, 6407 transitions, 93955 flow [2021-06-10 18:53:56,367 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) [2021-06-10 18:53:56,367 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 18:53:56,367 INFO L263 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] [2021-06-10 18:53:56,367 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-10 18:53:56,367 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 18:53:56,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 18:53:56,367 INFO L82 PathProgramCache]: Analyzing trace with hash 335544942, now seen corresponding path program 21 times [2021-06-10 18:53:56,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 18:53:56,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566868312] [2021-06-10 18:53:56,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 18:53:56,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 18:53:56,386 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-10 18:53:56,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 18:53:56,391 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 18:53:56,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 18:53:56,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:53:56,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:53:56,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:53:56,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:53:56,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:53:56,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:53:56,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:53:56,440 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:53:56,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:53:56,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:53:56,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:53:56,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:53:56,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:53:56,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:53:56,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:53:56,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:53:56,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:53:56,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:53:56,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:53:56,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:53:56,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:53:56,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:53:56,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:53:56,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:53:56,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:53:56,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:53:56,614 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-10 18:53:56,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 18:53:56,636 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 18:53:56,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:53:56,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:53:56,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 18:53:56,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 18:53:56,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566868312] [2021-06-10 18:53:56,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 18:53:56,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-10 18:53:56,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480227558] [2021-06-10 18:53:56,645 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-10 18:53:56,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 18:53:56,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-10 18:53:56,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-10 18:53:56,646 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-06-10 18:53:56,646 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) [2021-06-10 18:53:56,646 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 18:53:56,646 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-06-10 18:53:56,646 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 18:54:14,053 INFO L129 PetriNetUnfolder]: 7816/15910 cut-off events. [2021-06-10 18:54:14,054 INFO L130 PetriNetUnfolder]: For 503301/510308 co-relation queries the response was YES. [2021-06-10 18:54:14,482 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. [2021-06-10 18:54:14,692 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 5717 selfloop transitions, 751 changer transitions 2/6491 dead transitions. [2021-06-10 18:54:14,692 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1443 places, 6491 transitions, 108746 flow [2021-06-10 18:54:14,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-10 18:54:14,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-06-10 18:54:14,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1086 transitions. [2021-06-10 18:54:14,694 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6703703703703704 [2021-06-10 18:54:14,694 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1086 transitions. [2021-06-10 18:54:14,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1086 transitions. [2021-06-10 18:54:14,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 18:54:14,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1086 transitions. [2021-06-10 18:54:14,695 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) [2021-06-10 18:54:14,696 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) [2021-06-10 18:54:14,696 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) [2021-06-10 18:54:14,696 INFO L185 Difference]: Start difference. First operand has 1414 places, 6407 transitions, 93955 flow. Second operand 36 states and 1086 transitions. [2021-06-10 18:54:14,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1443 places, 6491 transitions, 108746 flow [2021-06-10 18:54:28,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1432 places, 6491 transitions, 102670 flow, removed 2898 selfloop flow, removed 11 redundant places. [2021-06-10 18:54:28,214 INFO L241 Difference]: Finished difference. Result has 1437 places, 6470 transitions, 91003 flow [2021-06-10 18:54:28,219 INFO L326 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} [2021-06-10 18:54:28,219 INFO L343 CegarLoopForPetriNet]: 52 programPoint places, 1385 predicate places. [2021-06-10 18:54:28,219 INFO L480 AbstractCegarLoop]: Abstraction has has 1437 places, 6470 transitions, 91003 flow [2021-06-10 18:54:28,219 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) [2021-06-10 18:54:28,219 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 18:54:28,220 INFO L263 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] [2021-06-10 18:54:28,220 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-10 18:54:28,220 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 18:54:28,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 18:54:28,220 INFO L82 PathProgramCache]: Analyzing trace with hash 401335546, now seen corresponding path program 22 times [2021-06-10 18:54:28,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 18:54:28,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107517970] [2021-06-10 18:54:28,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 18:54:28,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 18:54:28,238 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-10 18:54:28,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 18:54:28,243 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 18:54:28,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 18:54:28,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:54:28,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:54:28,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:54:28,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:54:28,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:54:28,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:54:28,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:54:28,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:54:28,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:54:28,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:54:28,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:54:28,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:54:28,340 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:54:28,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:54:28,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:54:28,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:54:28,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:54:28,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:54:28,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:54:28,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:54:28,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:54:28,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:54:28,454 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:54:28,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:54:28,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:54:28,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:54:28,508 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-10 18:54:28,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 18:54:28,537 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 18:54:28,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:54:28,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:54:28,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 18:54:28,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 18:54:28,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107517970] [2021-06-10 18:54:28,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 18:54:28,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-10 18:54:28,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127363114] [2021-06-10 18:54:28,542 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-10 18:54:28,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 18:54:28,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-10 18:54:28,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-06-10 18:54:28,542 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-06-10 18:54:28,543 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) [2021-06-10 18:54:28,543 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 18:54:28,543 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-06-10 18:54:28,543 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 18:54:46,338 INFO L129 PetriNetUnfolder]: 7978/16237 cut-off events. [2021-06-10 18:54:46,338 INFO L130 PetriNetUnfolder]: For 456843/462739 co-relation queries the response was YES. [2021-06-10 18:54:46,884 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. [2021-06-10 18:54:46,997 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 5588 selfloop transitions, 1108 changer transitions 2/6719 dead transitions. [2021-06-10 18:54:46,998 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1492 places, 6719 transitions, 111752 flow [2021-06-10 18:54:46,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-10 18:54:46,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-06-10 18:54:46,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 1747 transitions. [2021-06-10 18:54:46,999 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6693486590038314 [2021-06-10 18:54:46,999 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 1747 transitions. [2021-06-10 18:54:47,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 1747 transitions. [2021-06-10 18:54:47,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 18:54:47,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 1747 transitions. [2021-06-10 18:54:47,001 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) [2021-06-10 18:54:47,004 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) [2021-06-10 18:54:47,004 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) [2021-06-10 18:54:47,004 INFO L185 Difference]: Start difference. First operand has 1437 places, 6470 transitions, 91003 flow. Second operand 58 states and 1747 transitions. [2021-06-10 18:54:47,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1492 places, 6719 transitions, 111752 flow [2021-06-10 18:54:57,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1479 places, 6719 transitions, 109514 flow, removed 696 selfloop flow, removed 13 redundant places. [2021-06-10 18:54:57,740 INFO L241 Difference]: Finished difference. Result has 1489 places, 6647 transitions, 97049 flow [2021-06-10 18:54:57,744 INFO L326 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} [2021-06-10 18:54:57,745 INFO L343 CegarLoopForPetriNet]: 52 programPoint places, 1437 predicate places. [2021-06-10 18:54:57,745 INFO L480 AbstractCegarLoop]: Abstraction has has 1489 places, 6647 transitions, 97049 flow [2021-06-10 18:54:57,745 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) [2021-06-10 18:54:57,745 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 18:54:57,745 INFO L263 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] [2021-06-10 18:54:57,745 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-10 18:54:57,745 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 18:54:57,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 18:54:57,746 INFO L82 PathProgramCache]: Analyzing trace with hash 79926160, now seen corresponding path program 23 times [2021-06-10 18:54:57,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 18:54:57,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209337606] [2021-06-10 18:54:57,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 18:54:57,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 18:54:57,765 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-10 18:54:57,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 18:54:57,770 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 18:54:57,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 18:54:57,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:54:57,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:54:57,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:54:57,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:54:57,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:54:57,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:54:57,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:54:57,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:54:57,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:54:57,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:54:57,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:54:57,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:54:57,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:54:57,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:54:57,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:54:57,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:54:57,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:54:57,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:54:57,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:54:57,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:54:57,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:54:57,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:54:57,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:54:57,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:54:58,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:54:58,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:54:58,045 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-10 18:54:58,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 18:54:58,075 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 18:54:58,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:54:58,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:54:58,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 18:54:58,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 18:54:58,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209337606] [2021-06-10 18:54:58,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 18:54:58,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-10 18:54:58,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656367873] [2021-06-10 18:54:58,080 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-10 18:54:58,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 18:54:58,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-10 18:54:58,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-06-10 18:54:58,080 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-06-10 18:54:58,081 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) [2021-06-10 18:54:58,081 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 18:54:58,081 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-06-10 18:54:58,081 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 18:55:17,626 INFO L129 PetriNetUnfolder]: 8055/16497 cut-off events. [2021-06-10 18:55:17,627 INFO L130 PetriNetUnfolder]: For 484436/490027 co-relation queries the response was YES. [2021-06-10 18:55:18,210 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. [2021-06-10 18:55:18,328 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 5880 selfloop transitions, 880 changer transitions 2/6783 dead transitions. [2021-06-10 18:55:18,328 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1527 places, 6783 transitions, 115549 flow [2021-06-10 18:55:18,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-10 18:55:18,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-06-10 18:55:18,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 1227 transitions. [2021-06-10 18:55:18,330 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6650406504065041 [2021-06-10 18:55:18,330 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 1227 transitions. [2021-06-10 18:55:18,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 1227 transitions. [2021-06-10 18:55:18,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 18:55:18,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 1227 transitions. [2021-06-10 18:55:18,332 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) [2021-06-10 18:55:18,333 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) [2021-06-10 18:55:18,333 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) [2021-06-10 18:55:18,333 INFO L185 Difference]: Start difference. First operand has 1489 places, 6647 transitions, 97049 flow. Second operand 41 states and 1227 transitions. [2021-06-10 18:55:18,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1527 places, 6783 transitions, 115549 flow [2021-06-10 18:55:31,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1520 places, 6783 transitions, 111078 flow, removed 2078 selfloop flow, removed 7 redundant places. [2021-06-10 18:55:31,430 INFO L241 Difference]: Finished difference. Result has 1528 places, 6740 transitions, 98516 flow [2021-06-10 18:55:31,436 INFO L326 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} [2021-06-10 18:55:31,436 INFO L343 CegarLoopForPetriNet]: 52 programPoint places, 1476 predicate places. [2021-06-10 18:55:31,436 INFO L480 AbstractCegarLoop]: Abstraction has has 1528 places, 6740 transitions, 98516 flow [2021-06-10 18:55:31,437 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) [2021-06-10 18:55:31,437 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 18:55:31,437 INFO L263 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] [2021-06-10 18:55:31,437 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-10 18:55:31,437 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 18:55:31,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 18:55:31,437 INFO L82 PathProgramCache]: Analyzing trace with hash -418983530, now seen corresponding path program 24 times [2021-06-10 18:55:31,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 18:55:31,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009209985] [2021-06-10 18:55:31,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 18:55:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 18:55:31,455 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-10 18:55:31,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 18:55:31,461 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 18:55:31,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 18:55:31,469 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 18:55:31,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 18:55:31,479 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:55:31,479 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:55:31,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:55:31,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:55:31,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:55:31,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:55:31,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:55:31,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:55:31,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:55:31,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:55:31,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:55:31,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:55:31,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:55:31,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:55:31,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:55:31,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:55:31,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:55:31,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:55:31,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:55:31,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:55:31,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:55:31,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:55:31,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:55:31,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:55:31,735 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-10 18:55:31,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 18:55:31,767 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 18:55:31,768 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:55:31,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:55:31,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 18:55:31,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 18:55:31,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009209985] [2021-06-10 18:55:31,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 18:55:31,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-10 18:55:31,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679484046] [2021-06-10 18:55:31,772 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-10 18:55:31,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 18:55:31,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-10 18:55:31,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-06-10 18:55:31,773 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-06-10 18:55:31,773 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) [2021-06-10 18:55:31,773 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 18:55:31,773 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-06-10 18:55:31,773 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 18:55:52,408 INFO L129 PetriNetUnfolder]: 8165/16800 cut-off events. [2021-06-10 18:55:52,408 INFO L130 PetriNetUnfolder]: For 527485/534470 co-relation queries the response was YES. [2021-06-10 18:55:53,152 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. [2021-06-10 18:55:53,256 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 6165 selfloop transitions, 706 changer transitions 4/6896 dead transitions. [2021-06-10 18:55:53,257 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1575 places, 6896 transitions, 118421 flow [2021-06-10 18:55:53,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-10 18:55:53,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-06-10 18:55:53,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 1487 transitions. [2021-06-10 18:55:53,259 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6608888888888889 [2021-06-10 18:55:53,259 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 1487 transitions. [2021-06-10 18:55:53,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 1487 transitions. [2021-06-10 18:55:53,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 18:55:53,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 1487 transitions. [2021-06-10 18:55:53,260 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) [2021-06-10 18:55:53,261 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) [2021-06-10 18:55:53,261 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) [2021-06-10 18:55:53,261 INFO L185 Difference]: Start difference. First operand has 1528 places, 6740 transitions, 98516 flow. Second operand 50 states and 1487 transitions. [2021-06-10 18:55:53,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1575 places, 6896 transitions, 118421 flow [2021-06-10 18:56:06,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1566 places, 6896 transitions, 115250 flow, removed 1237 selfloop flow, removed 9 redundant places. [2021-06-10 18:56:06,574 INFO L241 Difference]: Finished difference. Result has 1577 places, 6867 transitions, 102308 flow [2021-06-10 18:56:06,578 INFO L326 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} [2021-06-10 18:56:06,579 INFO L343 CegarLoopForPetriNet]: 52 programPoint places, 1525 predicate places. [2021-06-10 18:56:06,579 INFO L480 AbstractCegarLoop]: Abstraction has has 1577 places, 6867 transitions, 102308 flow [2021-06-10 18:56:06,579 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) [2021-06-10 18:56:06,579 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 18:56:06,579 INFO L263 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] [2021-06-10 18:56:06,579 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-10 18:56:06,579 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 18:56:06,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 18:56:06,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1758581254, now seen corresponding path program 25 times [2021-06-10 18:56:06,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 18:56:06,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053624454] [2021-06-10 18:56:06,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 18:56:06,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 18:56:06,602 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-10 18:56:06,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 18:56:06,608 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 18:56:06,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 18:56:06,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:56:06,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:56:06,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:56:06,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:56:06,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:56:06,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:56:06,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:56:06,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:56:06,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:56:06,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:56:06,694 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:56:06,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:56:06,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:56:06,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:56:06,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:56:06,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:56:06,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:56:06,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:56:06,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:56:06,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:56:06,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:56:06,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:56:06,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:56:06,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:56:06,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:56:06,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:56:06,886 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-10 18:56:06,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 18:56:06,916 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 18:56:06,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:56:06,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:56:06,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 18:56:06,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 18:56:06,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053624454] [2021-06-10 18:56:06,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 18:56:06,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-10 18:56:06,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095818759] [2021-06-10 18:56:06,920 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-10 18:56:06,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 18:56:06,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-10 18:56:06,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-06-10 18:56:06,921 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-06-10 18:56:06,922 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) [2021-06-10 18:56:06,922 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 18:56:06,922 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-06-10 18:56:06,922 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 18:56:19,570 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2021-06-10 18:56:30,920 INFO L129 PetriNetUnfolder]: 8837/18096 cut-off events. [2021-06-10 18:56:30,920 INFO L130 PetriNetUnfolder]: For 583774/589694 co-relation queries the response was YES. [2021-06-10 18:56:31,529 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. [2021-06-10 18:56:31,646 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 6270 selfloop transitions, 1387 changer transitions 6/7684 dead transitions. [2021-06-10 18:56:31,646 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1667 places, 7684 transitions, 138624 flow [2021-06-10 18:56:31,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-06-10 18:56:31,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2021-06-10 18:56:31,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 2808 transitions. [2021-06-10 18:56:31,648 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6638297872340425 [2021-06-10 18:56:31,648 INFO L72 ComplementDD]: Start complementDD. Operand 94 states and 2808 transitions. [2021-06-10 18:56:31,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 94 states and 2808 transitions. [2021-06-10 18:56:31,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 18:56:31,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 94 states and 2808 transitions. [2021-06-10 18:56:31,651 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) [2021-06-10 18:56:31,652 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) [2021-06-10 18:56:31,653 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) [2021-06-10 18:56:31,653 INFO L185 Difference]: Start difference. First operand has 1577 places, 6867 transitions, 102308 flow. Second operand 94 states and 2808 transitions. [2021-06-10 18:56:31,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1667 places, 7684 transitions, 138624 flow [2021-06-10 18:56:48,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1657 places, 7684 transitions, 133870 flow, removed 2130 selfloop flow, removed 10 redundant places. [2021-06-10 18:56:48,233 INFO L241 Difference]: Finished difference. Result has 1687 places, 7587 transitions, 121238 flow [2021-06-10 18:56:48,237 INFO L326 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} [2021-06-10 18:56:48,237 INFO L343 CegarLoopForPetriNet]: 52 programPoint places, 1635 predicate places. [2021-06-10 18:56:48,237 INFO L480 AbstractCegarLoop]: Abstraction has has 1687 places, 7587 transitions, 121238 flow [2021-06-10 18:56:48,237 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) [2021-06-10 18:56:48,237 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 18:56:48,237 INFO L263 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] [2021-06-10 18:56:48,237 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-10 18:56:48,237 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 18:56:48,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 18:56:48,238 INFO L82 PathProgramCache]: Analyzing trace with hash -540417164, now seen corresponding path program 26 times [2021-06-10 18:56:48,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 18:56:48,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935958638] [2021-06-10 18:56:48,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 18:56:48,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 18:56:48,258 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-10 18:56:48,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 18:56:48,264 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 18:56:48,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 18:56:48,272 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 18:56:48,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 18:56:48,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:56:48,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:56:48,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:56:48,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:56:48,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:56:48,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:56:48,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:56:48,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:56:48,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:56:48,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:56:48,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:56:48,354 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:56:48,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:56:48,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:56:48,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:56:48,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:56:48,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:56:48,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:56:48,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:56:48,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:56:48,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:56:48,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:56:48,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:56:48,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:56:48,492 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-10 18:56:48,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 18:56:48,514 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 18:56:48,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:56:48,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:56:48,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 18:56:48,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 18:56:48,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935958638] [2021-06-10 18:56:48,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 18:56:48,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-10 18:56:48,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258780049] [2021-06-10 18:56:48,519 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-10 18:56:48,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 18:56:48,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-10 18:56:48,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-10 18:56:48,520 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-06-10 18:56:48,521 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) [2021-06-10 18:56:48,521 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 18:56:48,521 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-06-10 18:56:48,521 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 18:57:17,181 INFO L129 PetriNetUnfolder]: 8991/18477 cut-off events. [2021-06-10 18:57:17,182 INFO L130 PetriNetUnfolder]: For 650320/656667 co-relation queries the response was YES. [2021-06-10 18:57:17,780 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. [2021-06-10 18:57:17,898 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 6930 selfloop transitions, 838 changer transitions 4/7793 dead transitions. [2021-06-10 18:57:17,898 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1761 places, 7793 transitions, 145673 flow [2021-06-10 18:57:17,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-06-10 18:57:17,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2021-06-10 18:57:17,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 2370 transitions. [2021-06-10 18:57:17,900 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2021-06-10 18:57:17,900 INFO L72 ComplementDD]: Start complementDD. Operand 79 states and 2370 transitions. [2021-06-10 18:57:17,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 2370 transitions. [2021-06-10 18:57:17,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 18:57:17,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 79 states and 2370 transitions. [2021-06-10 18:57:17,902 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) [2021-06-10 18:57:17,904 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) [2021-06-10 18:57:17,904 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) [2021-06-10 18:57:17,904 INFO L185 Difference]: Start difference. First operand has 1687 places, 7587 transitions, 121238 flow. Second operand 79 states and 2370 transitions. [2021-06-10 18:57:17,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1761 places, 7793 transitions, 145673 flow [2021-06-10 18:57:33,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1757 places, 7793 transitions, 136637 flow, removed 4442 selfloop flow, removed 4 redundant places. [2021-06-10 18:57:34,023 INFO L241 Difference]: Finished difference. Result has 1772 places, 7752 transitions, 121603 flow [2021-06-10 18:57:34,027 INFO L326 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} [2021-06-10 18:57:34,027 INFO L343 CegarLoopForPetriNet]: 52 programPoint places, 1720 predicate places. [2021-06-10 18:57:34,028 INFO L480 AbstractCegarLoop]: Abstraction has has 1772 places, 7752 transitions, 121603 flow [2021-06-10 18:57:34,028 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) [2021-06-10 18:57:34,028 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 18:57:34,028 INFO L263 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] [2021-06-10 18:57:34,028 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-10 18:57:34,028 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 18:57:34,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 18:57:34,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1171364306, now seen corresponding path program 27 times [2021-06-10 18:57:34,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 18:57:34,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4980474] [2021-06-10 18:57:34,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 18:57:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 18:57:34,052 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-10 18:57:34,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 18:57:34,058 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 18:57:34,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 18:57:34,066 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 18:57:34,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 18:57:34,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:57:34,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:57:34,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:57:34,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:57:34,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:57:34,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:57:34,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:57:34,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:57:34,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:57:34,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:57:34,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:57:34,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:57:34,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:57:34,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:57:34,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:57:34,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:57:34,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:57:34,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:57:34,223 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:57:34,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:57:34,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:57:34,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:57:34,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:57:34,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:57:34,310 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-10 18:57:34,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 18:57:34,334 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 18:57:34,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:57:34,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:57:34,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 18:57:34,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 18:57:34,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4980474] [2021-06-10 18:57:34,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 18:57:34,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-10 18:57:34,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728952013] [2021-06-10 18:57:34,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-10 18:57:34,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 18:57:34,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-10 18:57:34,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-10 18:57:34,339 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-06-10 18:57:34,339 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) [2021-06-10 18:57:34,339 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 18:57:34,339 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-06-10 18:57:34,339 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 18:58:02,942 INFO L129 PetriNetUnfolder]: 9158/18880 cut-off events. [2021-06-10 18:58:02,942 INFO L130 PetriNetUnfolder]: For 722077/729416 co-relation queries the response was YES. [2021-06-10 18:58:03,829 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. [2021-06-10 18:58:03,952 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 7296 selfloop transitions, 618 changer transitions 3/7938 dead transitions. [2021-06-10 18:58:03,952 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1814 places, 7938 transitions, 145374 flow [2021-06-10 18:58:03,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-10 18:58:03,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-06-10 18:58:03,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 1384 transitions. [2021-06-10 18:58:03,954 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6685990338164252 [2021-06-10 18:58:03,954 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 1384 transitions. [2021-06-10 18:58:03,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 1384 transitions. [2021-06-10 18:58:03,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 18:58:03,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 1384 transitions. [2021-06-10 18:58:03,955 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) [2021-06-10 18:58:03,956 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) [2021-06-10 18:58:03,956 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) [2021-06-10 18:58:03,956 INFO L185 Difference]: Start difference. First operand has 1772 places, 7752 transitions, 121603 flow. Second operand 46 states and 1384 transitions. [2021-06-10 18:58:03,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1814 places, 7938 transitions, 145374 flow [2021-06-10 18:58:25,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1798 places, 7938 transitions, 139277 flow, removed 2768 selfloop flow, removed 16 redundant places. [2021-06-10 18:58:25,133 INFO L241 Difference]: Finished difference. Result has 1814 places, 7901 transitions, 123535 flow [2021-06-10 18:58:25,137 INFO L326 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} [2021-06-10 18:58:25,137 INFO L343 CegarLoopForPetriNet]: 52 programPoint places, 1762 predicate places. [2021-06-10 18:58:25,137 INFO L480 AbstractCegarLoop]: Abstraction has has 1814 places, 7901 transitions, 123535 flow [2021-06-10 18:58:25,138 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) [2021-06-10 18:58:25,138 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 18:58:25,138 INFO L263 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] [2021-06-10 18:58:25,138 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-10 18:58:25,138 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 18:58:25,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 18:58:25,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1705661458, now seen corresponding path program 28 times [2021-06-10 18:58:25,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 18:58:25,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763862061] [2021-06-10 18:58:25,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 18:58:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 18:58:25,156 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-10 18:58:25,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 18:58:25,162 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 18:58:25,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 18:58:25,170 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 18:58:25,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 18:58:25,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:58:25,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:58:25,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:58:25,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:58:25,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:58:25,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:58:25,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:58:25,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:58:25,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:58:25,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:58:25,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:58:25,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:58:25,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:58:25,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:58:25,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:58:25,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:58:25,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:58:25,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:58:25,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:58:25,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:58:25,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:58:25,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:58:25,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:58:25,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:58:25,429 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-10 18:58:25,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 18:58:25,453 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 18:58:25,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:58:25,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:58:25,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 18:58:25,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 18:58:25,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763862061] [2021-06-10 18:58:25,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 18:58:25,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-10 18:58:25,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342865006] [2021-06-10 18:58:25,456 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-10 18:58:25,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 18:58:25,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-10 18:58:25,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-06-10 18:58:25,457 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-06-10 18:58:25,458 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) [2021-06-10 18:58:25,458 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 18:58:25,458 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-06-10 18:58:25,458 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 18:58:51,360 INFO L129 PetriNetUnfolder]: 9287/19284 cut-off events. [2021-06-10 18:58:51,360 INFO L130 PetriNetUnfolder]: For 784940/792463 co-relation queries the response was YES. [2021-06-10 18:58:52,457 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. [2021-06-10 18:58:52,588 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 7330 selfloop transitions, 717 changer transitions 3/8071 dead transitions. [2021-06-10 18:58:52,588 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1850 places, 8071 transitions, 146881 flow [2021-06-10 18:58:52,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-10 18:58:52,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-06-10 18:58:52,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1178 transitions. [2021-06-10 18:58:52,590 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6712250712250712 [2021-06-10 18:58:52,590 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 1178 transitions. [2021-06-10 18:58:52,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 1178 transitions. [2021-06-10 18:58:52,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 18:58:52,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 1178 transitions. [2021-06-10 18:58:52,591 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) [2021-06-10 18:58:52,592 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) [2021-06-10 18:58:52,592 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) [2021-06-10 18:58:52,592 INFO L185 Difference]: Start difference. First operand has 1814 places, 7901 transitions, 123535 flow. Second operand 39 states and 1178 transitions. [2021-06-10 18:58:52,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1850 places, 8071 transitions, 146881 flow [2021-06-10 18:59:16,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1843 places, 8071 transitions, 140644 flow, removed 2896 selfloop flow, removed 7 redundant places. [2021-06-10 18:59:16,278 INFO L241 Difference]: Finished difference. Result has 1855 places, 8037 transitions, 124570 flow [2021-06-10 18:59:16,281 INFO L326 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} [2021-06-10 18:59:16,282 INFO L343 CegarLoopForPetriNet]: 52 programPoint places, 1803 predicate places. [2021-06-10 18:59:16,282 INFO L480 AbstractCegarLoop]: Abstraction has has 1855 places, 8037 transitions, 124570 flow [2021-06-10 18:59:16,282 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) [2021-06-10 18:59:16,282 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 18:59:16,282 INFO L263 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] [2021-06-10 18:59:16,282 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-10 18:59:16,282 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 18:59:16,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 18:59:16,282 INFO L82 PathProgramCache]: Analyzing trace with hash 505751612, now seen corresponding path program 29 times [2021-06-10 18:59:16,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 18:59:16,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454535596] [2021-06-10 18:59:16,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 18:59:16,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 18:59:16,309 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-10 18:59:16,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 18:59:16,315 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 18:59:16,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 18:59:16,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:59:16,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:59:16,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:59:16,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:59:16,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:59:16,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:59:16,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:59:16,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:59:16,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:59:16,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:59:16,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:59:16,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:59:16,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:59:16,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:59:16,432 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:59:16,432 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:59:16,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:59:16,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:59:16,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:59:16,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 18:59:16,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:59:16,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:59:16,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:59:16,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:59:16,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:59:16,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 18:59:16,550 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-10 18:59:16,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 18:59:16,573 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 18:59:16,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 18:59:16,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 18:59:16,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 18:59:16,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 18:59:16,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454535596] [2021-06-10 18:59:16,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 18:59:16,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-10 18:59:16,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973976142] [2021-06-10 18:59:16,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-10 18:59:16,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 18:59:16,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-10 18:59:16,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-06-10 18:59:16,577 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-06-10 18:59:16,577 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) [2021-06-10 18:59:16,578 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 18:59:16,578 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-06-10 18:59:16,578 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 18:59:42,137 INFO L129 PetriNetUnfolder]: 9432/19612 cut-off events. [2021-06-10 18:59:42,137 INFO L130 PetriNetUnfolder]: For 816053/823632 co-relation queries the response was YES. [2021-06-10 18:59:42,757 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. [2021-06-10 18:59:42,877 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 7237 selfloop transitions, 996 changer transitions 2/8256 dead transitions. [2021-06-10 18:59:42,877 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1906 places, 8256 transitions, 151124 flow [2021-06-10 18:59:42,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-10 18:59:42,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-06-10 18:59:42,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 1625 transitions. [2021-06-10 18:59:42,880 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.668724279835391 [2021-06-10 18:59:42,880 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 1625 transitions. [2021-06-10 18:59:42,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 1625 transitions. [2021-06-10 18:59:42,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 18:59:42,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 1625 transitions. [2021-06-10 18:59:42,881 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) [2021-06-10 18:59:42,883 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) [2021-06-10 18:59:42,883 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) [2021-06-10 18:59:42,883 INFO L185 Difference]: Start difference. First operand has 1855 places, 8037 transitions, 124570 flow. Second operand 54 states and 1625 transitions. [2021-06-10 18:59:42,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1906 places, 8256 transitions, 151124 flow [2021-06-10 19:00:04,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1896 places, 8256 transitions, 147823 flow, removed 1314 selfloop flow, removed 10 redundant places. [2021-06-10 19:00:04,602 INFO L241 Difference]: Finished difference. Result has 1904 places, 8210 transitions, 132090 flow [2021-06-10 19:00:04,605 INFO L326 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} [2021-06-10 19:00:04,606 INFO L343 CegarLoopForPetriNet]: 52 programPoint places, 1852 predicate places. [2021-06-10 19:00:04,606 INFO L480 AbstractCegarLoop]: Abstraction has has 1904 places, 8210 transitions, 132090 flow [2021-06-10 19:00:04,606 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) [2021-06-10 19:00:04,606 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 19:00:04,607 INFO L263 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] [2021-06-10 19:00:04,607 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-10 19:00:04,607 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 19:00:04,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 19:00:04,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1278320190, now seen corresponding path program 30 times [2021-06-10 19:00:04,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 19:00:04,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759490756] [2021-06-10 19:00:04,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 19:00:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 19:00:04,624 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-10 19:00:04,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 19:00:04,630 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 19:00:04,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 19:00:04,639 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 19:00:04,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 19:00:04,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:00:04,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:00:04,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:00:04,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:00:04,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:00:04,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:00:04,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:00:04,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:00:04,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:00:04,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:00:04,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:00:04,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:00:04,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:00:04,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:00:04,777 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:00:04,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:00:04,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:00:04,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:00:04,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:00:04,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 19:00:04,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:00:04,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 19:00:04,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:00:04,875 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 19:00:04,902 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-10 19:00:04,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 19:00:04,932 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 19:00:05,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 19:00:05,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:00:05,058 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 19:00:05,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 19:00:05,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759490756] [2021-06-10 19:00:05,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 19:00:05,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-10 19:00:05,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779490356] [2021-06-10 19:00:05,058 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-10 19:00:05,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 19:00:05,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-10 19:00:05,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-06-10 19:00:05,059 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-06-10 19:00:05,060 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) [2021-06-10 19:00:05,060 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 19:00:05,060 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-06-10 19:00:05,060 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 19:00:29,190 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2021-06-10 19:00:35,745 INFO L129 PetriNetUnfolder]: 9531/19957 cut-off events. [2021-06-10 19:00:35,746 INFO L130 PetriNetUnfolder]: For 887780/894211 co-relation queries the response was YES. [2021-06-10 19:00:36,569 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. [2021-06-10 19:00:36,709 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 7645 selfloop transitions, 691 changer transitions 3/8360 dead transitions. [2021-06-10 19:00:36,710 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1952 places, 8360 transitions, 156585 flow [2021-06-10 19:00:36,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-10 19:00:36,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-06-10 19:00:36,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 1527 transitions. [2021-06-10 19:00:36,711 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.665359477124183 [2021-06-10 19:00:36,711 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 1527 transitions. [2021-06-10 19:00:36,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 1527 transitions. [2021-06-10 19:00:36,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 19:00:36,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 1527 transitions. [2021-06-10 19:00:36,713 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) [2021-06-10 19:00:36,714 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) [2021-06-10 19:00:36,714 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) [2021-06-10 19:00:36,714 INFO L185 Difference]: Start difference. First operand has 1904 places, 8210 transitions, 132090 flow. Second operand 51 states and 1527 transitions. [2021-06-10 19:00:36,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1952 places, 8360 transitions, 156585 flow [2021-06-10 19:01:01,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1940 places, 8360 transitions, 148241 flow, removed 3741 selfloop flow, removed 12 redundant places. [2021-06-10 19:01:01,978 INFO L241 Difference]: Finished difference. Result has 1954 places, 8336 transitions, 132040 flow [2021-06-10 19:01:01,982 INFO L326 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} [2021-06-10 19:01:01,982 INFO L343 CegarLoopForPetriNet]: 52 programPoint places, 1902 predicate places. [2021-06-10 19:01:01,982 INFO L480 AbstractCegarLoop]: Abstraction has has 1954 places, 8336 transitions, 132040 flow [2021-06-10 19:01:01,983 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) [2021-06-10 19:01:01,983 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 19:01:01,983 INFO L263 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] [2021-06-10 19:01:01,983 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-06-10 19:01:01,983 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 19:01:01,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 19:01:01,983 INFO L82 PathProgramCache]: Analyzing trace with hash 38737242, now seen corresponding path program 31 times [2021-06-10 19:01:01,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 19:01:01,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47963280] [2021-06-10 19:01:01,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 19:01:01,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 19:01:02,000 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-10 19:01:02,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 19:01:02,006 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 19:01:02,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 19:01:02,014 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 19:01:02,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 19:01:02,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:01:02,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:01:02,035 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:01:02,036 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:01:02,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:01:02,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:01:02,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:01:02,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:01:02,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:01:02,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:01:02,105 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:01:02,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:01:02,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:01:02,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:01:02,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:01:02,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:01:02,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:01:02,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:01:02,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:01:02,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 19:01:02,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:01:02,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 19:01:02,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:01:02,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 19:01:02,238 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 19:01:02,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 19:01:02,263 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 19:01:02,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 19:01:02,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:01:02,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 19:01:02,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 19:01:02,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47963280] [2021-06-10 19:01:02,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 19:01:02,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-10 19:01:02,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607377447] [2021-06-10 19:01:02,266 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-10 19:01:02,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 19:01:02,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-10 19:01:02,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-06-10 19:01:02,267 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-06-10 19:01:02,267 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) [2021-06-10 19:01:02,267 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 19:01:02,267 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-06-10 19:01:02,267 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 19:01:14,251 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2021-06-10 19:01:30,020 INFO L129 PetriNetUnfolder]: 9564/20107 cut-off events. [2021-06-10 19:01:30,020 INFO L130 PetriNetUnfolder]: For 899348/907322 co-relation queries the response was YES. [2021-06-10 19:01:30,778 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. [2021-06-10 19:01:30,898 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 7531 selfloop transitions, 860 changer transitions 6/8418 dead transitions. [2021-06-10 19:01:30,898 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1991 places, 8418 transitions, 152809 flow [2021-06-10 19:01:30,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-10 19:01:30,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-06-10 19:01:30,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 1200 transitions. [2021-06-10 19:01:30,899 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2021-06-10 19:01:30,899 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 1200 transitions. [2021-06-10 19:01:30,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 1200 transitions. [2021-06-10 19:01:30,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 19:01:30,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 1200 transitions. [2021-06-10 19:01:30,901 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) [2021-06-10 19:01:30,901 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) [2021-06-10 19:01:30,901 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) [2021-06-10 19:01:30,901 INFO L185 Difference]: Start difference. First operand has 1954 places, 8336 transitions, 132040 flow. Second operand 40 states and 1200 transitions. [2021-06-10 19:01:30,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1991 places, 8418 transitions, 152809 flow [2021-06-10 19:01:58,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1984 places, 8418 transitions, 146298 flow, removed 3056 selfloop flow, removed 7 redundant places. [2021-06-10 19:01:58,119 INFO L241 Difference]: Finished difference. Result has 1998 places, 8386 transitions, 130136 flow [2021-06-10 19:01:58,122 INFO L326 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} [2021-06-10 19:01:58,122 INFO L343 CegarLoopForPetriNet]: 52 programPoint places, 1946 predicate places. [2021-06-10 19:01:58,122 INFO L480 AbstractCegarLoop]: Abstraction has has 1998 places, 8386 transitions, 130136 flow [2021-06-10 19:01:58,122 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) [2021-06-10 19:01:58,122 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 19:01:58,122 INFO L263 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] [2021-06-10 19:01:58,122 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-06-10 19:01:58,122 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 19:01:58,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 19:01:58,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1019528032, now seen corresponding path program 32 times [2021-06-10 19:01:58,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 19:01:58,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623622671] [2021-06-10 19:01:58,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 19:01:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 19:01:58,140 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-10 19:01:58,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 19:01:58,146 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 19:01:58,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 19:01:58,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:01:58,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:01:58,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:01:58,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 19:01:58,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:01:58,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 19:01:58,190 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:01:58,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 19:01:58,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:01:58,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 19:01:58,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:01:58,227 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 19:01:58,246 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:01:58,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:01:58,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:01:58,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:01:58,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:01:58,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:01:58,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:01:58,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:01:58,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:01:58,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 19:01:58,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:01:58,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 19:01:58,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:01:58,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 19:01:58,418 INFO L142 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-06-10 19:01:58,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 19:01:58,448 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 19:01:58,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 19:01:58,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:01:58,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 19:01:58,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 19:01:58,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623622671] [2021-06-10 19:01:58,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 19:01:58,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-10 19:01:58,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368453887] [2021-06-10 19:01:58,452 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-10 19:01:58,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 19:01:58,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-10 19:01:58,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-06-10 19:01:58,453 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-06-10 19:01:58,453 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) [2021-06-10 19:01:58,453 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 19:01:58,453 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-06-10 19:01:58,453 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 19:02:25,952 INFO L129 PetriNetUnfolder]: 9753/20584 cut-off events. [2021-06-10 19:02:25,952 INFO L130 PetriNetUnfolder]: For 916687/922737 co-relation queries the response was YES. [2021-06-10 19:02:26,673 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. [2021-06-10 19:02:26,800 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 7433 selfloop transitions, 1247 changer transitions 1/8702 dead transitions. [2021-06-10 19:02:26,800 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2045 places, 8702 transitions, 155744 flow [2021-06-10 19:02:26,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-10 19:02:26,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-06-10 19:02:26,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 1572 transitions. [2021-06-10 19:02:26,802 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6717948717948717 [2021-06-10 19:02:26,802 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 1572 transitions. [2021-06-10 19:02:26,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 1572 transitions. [2021-06-10 19:02:26,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 19:02:26,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 1572 transitions. [2021-06-10 19:02:26,804 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) [2021-06-10 19:02:26,805 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) [2021-06-10 19:02:26,805 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) [2021-06-10 19:02:26,805 INFO L185 Difference]: Start difference. First operand has 1998 places, 8386 transitions, 130136 flow. Second operand 52 states and 1572 transitions. [2021-06-10 19:02:26,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2045 places, 8702 transitions, 155744 flow [2021-06-10 19:02:54,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2031 places, 8702 transitions, 152797 flow, removed 1044 selfloop flow, removed 14 redundant places. [2021-06-10 19:02:54,171 INFO L241 Difference]: Finished difference. Result has 2044 places, 8591 transitions, 135877 flow [2021-06-10 19:02:54,173 INFO L326 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} [2021-06-10 19:02:54,174 INFO L343 CegarLoopForPetriNet]: 52 programPoint places, 1992 predicate places. [2021-06-10 19:02:54,174 INFO L480 AbstractCegarLoop]: Abstraction has has 2044 places, 8591 transitions, 135877 flow [2021-06-10 19:02:54,174 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) [2021-06-10 19:02:54,174 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 19:02:54,174 INFO L263 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] [2021-06-10 19:02:54,174 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-06-10 19:02:54,174 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 19:02:54,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 19:02:54,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1924986776, now seen corresponding path program 33 times [2021-06-10 19:02:54,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 19:02:54,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383277524] [2021-06-10 19:02:54,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 19:02:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 19:02:54,190 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-10 19:02:54,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 19:02:54,196 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 19:02:54,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 19:02:54,204 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 19:02:54,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 19:02:54,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:02:54,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:02:54,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:02:54,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:02:54,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:02:54,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:02:54,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:02:54,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:02:54,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:02:54,274 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:02:54,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:02:54,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:02:54,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:02:54,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:02:54,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:02:54,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:02:54,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:02:54,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:02:54,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:02:54,360 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 19:02:54,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:02:54,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 19:02:54,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:02:54,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 19:02:54,438 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-10 19:02:54,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 19:02:54,468 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 19:02:54,468 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 19:02:54,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:02:54,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 19:02:54,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 19:02:54,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383277524] [2021-06-10 19:02:54,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 19:02:54,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-06-10 19:02:54,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909601068] [2021-06-10 19:02:54,473 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-10 19:02:54,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 19:02:54,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-10 19:02:54,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-06-10 19:02:54,473 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-06-10 19:02:54,474 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) [2021-06-10 19:02:54,474 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 19:02:54,474 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-06-10 19:02:54,474 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 19:03:23,344 INFO L129 PetriNetUnfolder]: 9824/20780 cut-off events. [2021-06-10 19:03:23,344 INFO L130 PetriNetUnfolder]: For 964942/971079 co-relation queries the response was YES. [2021-06-10 19:03:24,519 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. [2021-06-10 19:03:24,649 INFO L132 encePairwiseOnDemand]: 27/45 looper letters, 7862 selfloop transitions, 828 changer transitions 3/8714 dead transitions. [2021-06-10 19:03:24,649 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2084 places, 8714 transitions, 158671 flow [2021-06-10 19:03:24,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-10 19:03:24,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-06-10 19:03:24,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 1275 transitions. [2021-06-10 19:03:24,651 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6746031746031746 [2021-06-10 19:03:24,651 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 1275 transitions. [2021-06-10 19:03:24,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 1275 transitions. [2021-06-10 19:03:24,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 19:03:24,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 1275 transitions. [2021-06-10 19:03:24,652 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) [2021-06-10 19:03:24,653 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) [2021-06-10 19:03:24,653 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) [2021-06-10 19:03:24,653 INFO L185 Difference]: Start difference. First operand has 2044 places, 8591 transitions, 135877 flow. Second operand 42 states and 1275 transitions. [2021-06-10 19:03:24,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2084 places, 8714 transitions, 158671 flow [2021-06-10 19:03:54,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2068 places, 8714 transitions, 155576 flow, removed 1266 selfloop flow, removed 16 redundant places. [2021-06-10 19:03:55,018 INFO L241 Difference]: Finished difference. Result has 2079 places, 8680 transitions, 138500 flow [2021-06-10 19:03:55,020 INFO L326 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} [2021-06-10 19:03:55,021 INFO L343 CegarLoopForPetriNet]: 52 programPoint places, 2027 predicate places. [2021-06-10 19:03:55,021 INFO L480 AbstractCegarLoop]: Abstraction has has 2079 places, 8680 transitions, 138500 flow [2021-06-10 19:03:55,021 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) [2021-06-10 19:03:55,021 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 19:03:55,021 INFO L263 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] [2021-06-10 19:03:55,021 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-06-10 19:03:55,021 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 19:03:55,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 19:03:55,021 INFO L82 PathProgramCache]: Analyzing trace with hash 104791084, now seen corresponding path program 34 times [2021-06-10 19:03:55,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 19:03:55,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697725569] [2021-06-10 19:03:55,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 19:03:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 19:03:55,037 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-06-10 19:03:55,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 19:03:55,043 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 19:03:55,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 19:03:55,052 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-06-10 19:03:55,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 19:03:55,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:03:55,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:03:55,070 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:03:55,071 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:03:55,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:03:55,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:03:55,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:03:55,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:03:55,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:03:55,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:03:55,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:03:55,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:03:55,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:03:55,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:03:55,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:03:55,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:03:55,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:03:55,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 19:03:55,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:03:55,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 19:03:55,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:03:55,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 19:03:55,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:03:55,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 19:03:55,277 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-06-10 19:03:55,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-10 19:03:55,301 INFO L142 QuantifierPusher]: treesize reduction 20, result has 45.9 percent of original size [2021-06-10 19:03:55,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 19:03:55,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 19:03:55,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 19:03:55,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 19:03:55,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697725569] [2021-06-10 19:03:55,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 19:03:55,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-06-10 19:03:55,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203014338] [2021-06-10 19:03:55,305 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-10 19:03:55,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 19:03:55,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-10 19:03:55,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2021-06-10 19:03:55,306 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 45 [2021-06-10 19:03:55,306 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) [2021-06-10 19:03:55,306 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 19:03:55,306 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 45 [2021-06-10 19:03:55,306 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2021-06-10 19:03:57,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-10 19:03:57,627 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-06-10 19:03:57,627 WARN L545 AbstractCegarLoop]: Verification canceled [2021-06-10 19:03:57,630 WARN L224 ceAbstractionStarter]: Timeout [2021-06-10 19:03:57,630 INFO L202 PluginConnector]: Adding new model easy10.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 07:03:57 BasicIcfg [2021-06-10 19:03:57,630 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 19:03:57,630 INFO L168 Benchmark]: Toolchain (without parser) took 785948.88 ms. Allocated memory was 383.8 MB in the beginning and 13.1 GB in the end (delta: 12.8 GB). Free memory was 362.7 MB in the beginning and 5.1 GB in the end (delta: -4.7 GB). Peak memory consumption was 8.0 GB. Max. memory is 16.0 GB. [2021-06-10 19:03:57,630 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 383.8 MB. Free memory is still 363.9 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 19:03:57,631 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.85 ms. Allocated memory is still 383.8 MB. Free memory was 362.7 MB in the beginning and 361.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 19:03:57,631 INFO L168 Benchmark]: Boogie Preprocessor took 19.66 ms. Allocated memory is still 383.8 MB. Free memory was 361.1 MB in the beginning and 360.2 MB in the end (delta: 957.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 19:03:57,631 INFO L168 Benchmark]: RCFGBuilder took 215.62 ms. Allocated memory is still 383.8 MB. Free memory was 360.1 MB in the beginning and 347.5 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-06-10 19:03:57,631 INFO L168 Benchmark]: TraceAbstraction took 785685.01 ms. Allocated memory was 383.8 MB in the beginning and 13.1 GB in the end (delta: 12.8 GB). Free memory was 347.1 MB in the beginning and 5.1 GB in the end (delta: -4.7 GB). Peak memory consumption was 8.0 GB. Max. memory is 16.0 GB. [2021-06-10 19:03:57,631 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 0.12 ms. Allocated memory is still 383.8 MB. Free memory is still 363.9 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.85 ms. Allocated memory is still 383.8 MB. Free memory was 362.7 MB in the beginning and 361.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 19.66 ms. Allocated memory is still 383.8 MB. Free memory was 361.1 MB in the beginning and 360.2 MB in the end (delta: 957.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 215.62 ms. Allocated memory is still 383.8 MB. Free memory was 360.1 MB in the beginning and 347.5 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 785685.01 ms. Allocated memory was 383.8 MB in the beginning and 13.1 GB in the end (delta: 12.8 GB). Free memory was 347.1 MB in the beginning and 5.1 GB in the end (delta: -4.7 GB). Peak memory consumption was 8.0 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 CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (18states, 26/45 universal loopers) in iteration 34,while PetriNetUnfolder was constructing finite prefix that currently has 18673 conditions, 1192 events (469/1191 cut-off events. For 84035/84229 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 12414 event pairs, 6 based on Foata normal form. 29/1777 useless extension candidates. Maximal degree in co-relation 18162. Up to 831 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 14.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: TIMEOUT, OverallTime: 785539.6ms, OverallIterations: 34, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 775578.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 47.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1495 SDtfs, 3236 SDslu, 2243 SDs, 0 SdLazy, 59072 SolverSat, 2447 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 23144.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2064 GetRequests, 38 SyntacticMatches, 38 SemanticMatches, 1988 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41744 ImplicationChecksByTransitivity, 46870.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=138500occurred in iteration=33, InterpolantAutomatonStates: 1842, 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: 50.0ms SsaConstructionTime, 218.4ms SatisfiabilityAnalysisTime, 9372.8ms InterpolantComputationTime, 1326 NumberOfCodeBlocks, 1326 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 1292 ConstructedInterpolants, 0 QuantifiedInterpolants, 16153 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 34 InterpolantComputations, 34 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