/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-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 09:28:44,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 09:28:44,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 09:28:44,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 09:28:44,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 09:28:44,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 09:28:44,174 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 09:28:44,176 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 09:28:44,177 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 09:28:44,178 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 09:28:44,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 09:28:44,180 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 09:28:44,180 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 09:28:44,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 09:28:44,182 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 09:28:44,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 09:28:44,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 09:28:44,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 09:28:44,186 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 09:28:44,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 09:28:44,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 09:28:44,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 09:28:44,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 09:28:44,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 09:28:44,194 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 09:28:44,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 09:28:44,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 09:28:44,203 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 09:28:44,210 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-RepeatedVariableLbe.epf [2021-03-25 09:28:44,245 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 09:28:44,245 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 09:28:44,249 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 09:28:44,249 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 09:28:44,250 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 09:28:44,250 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 09:28:44,250 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 09:28:44,250 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 09:28:44,250 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 09:28:44,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 09:28:44,251 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 09:28:44,251 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 09:28:44,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 09:28:44,252 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 09:28:44,252 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 09:28:44,252 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 09:28:44,252 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 09:28:44,252 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 09:28:44,253 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 09:28:44,253 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 09:28:44,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 09:28:44,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 09:28:44,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 09:28:44,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 09:28:44,253 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 09:28:44,254 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 09:28:44,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 09:28:44,254 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 09:28:44,254 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 09:28:44,254 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 09:28:44,254 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 09:28:44,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 09:28:44,550 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 09:28:44,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 09:28:44,553 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-25 09:28:44,553 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-25 09:28:44,554 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl [2021-03-25 09:28:44,581 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl' [2021-03-25 09:28:44,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 09:28:44,611 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-25 09:28:44,612 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 09:28:44,613 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 09:28:44,613 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 09:28:44,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:28:44" (1/1) ... [2021-03-25 09:28:44,628 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:28:44" (1/1) ... [2021-03-25 09:28:44,635 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 09:28:44,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 09:28:44,636 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 09:28:44,636 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 09:28:44,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:28:44" (1/1) ... [2021-03-25 09:28:44,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:28:44" (1/1) ... [2021-03-25 09:28:44,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:28:44" (1/1) ... [2021-03-25 09:28:44,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:28:44" (1/1) ... [2021-03-25 09:28:44,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:28:44" (1/1) ... [2021-03-25 09:28:44,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:28:44" (1/1) ... [2021-03-25 09:28:44,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:28:44" (1/1) ... [2021-03-25 09:28:44,649 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 09:28:44,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 09:28:44,650 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 09:28:44,650 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 09:28:44,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:28:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 09:28:44,712 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-25 09:28:44,712 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-25 09:28:44,712 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-25 09:28:44,712 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-25 09:28:44,713 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-25 09:28:44,713 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-25 09:28:44,713 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-25 09:28:44,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 09:28:44,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 09:28:44,713 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-25 09:28:44,713 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-25 09:28:44,714 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-25 09:28:44,714 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 09:28:44,871 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 09:28:44,871 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-25 09:28:44,872 INFO L202 PluginConnector]: Adding new model bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 09:28:44 BoogieIcfgContainer [2021-03-25 09:28:44,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 09:28:44,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 09:28:44,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 09:28:44,876 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 09:28:44,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.03 09:28:44" (1/2) ... [2021-03-25 09:28:44,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1419f279 and model type bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 09:28:44, skipping insertion in model container [2021-03-25 09:28:44,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 09:28:44" (2/2) ... [2021-03-25 09:28:44,878 INFO L111 eAbstractionObserver]: Analyzing ICFG bakery-3.wvr.bpl [2021-03-25 09:28:44,882 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 09:28:44,885 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 09:28:44,886 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 09:28:44,920 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-03-25 09:28:44,935 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 09:28:44,951 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 09:28:44,952 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 09:28:44,952 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 09:28:44,952 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 09:28:44,952 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 09:28:44,952 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 09:28:44,952 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 09:28:44,952 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 09:28:44,961 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 63 places, 53 transitions, 130 flow [2021-03-25 09:28:45,031 INFO L129 PetriNetUnfolder]: 0/50 cut-off events. [2021-03-25 09:28:45,037 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 09:28:45,039 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 50 events. 0/50 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 79 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 09:28:45,039 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 53 transitions, 130 flow [2021-03-25 09:28:45,043 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 48 transitions, 114 flow [2021-03-25 09:28:45,045 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:28:45,052 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 48 transitions, 114 flow [2021-03-25 09:28:45,055 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 48 transitions, 114 flow [2021-03-25 09:28:45,085 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 58 places, 48 transitions, 114 flow [2021-03-25 09:28:45,118 INFO L129 PetriNetUnfolder]: 0/48 cut-off events. [2021-03-25 09:28:45,118 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 09:28:45,118 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 48 events. 0/48 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 80 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 09:28:45,121 INFO L142 LiptonReduction]: Number of co-enabled transitions 1170 [2021-03-25 09:28:45,240 INFO L154 LiptonReduction]: Checked pairs total: 3620 [2021-03-25 09:28:45,241 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 09:28:45,244 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 200 [2021-03-25 09:28:45,278 INFO L129 PetriNetUnfolder]: 0/43 cut-off events. [2021-03-25 09:28:45,278 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 09:28:45,278 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:28:45,279 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, 1, 1, 1, 1, 1] [2021-03-25 09:28:45,279 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:28:45,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:28:45,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1193492651, now seen corresponding path program 1 times [2021-03-25 09:28:45,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:28:45,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332819138] [2021-03-25 09:28:45,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:28:45,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:28:45,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:45,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:45,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:45,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:45,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:45,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:45,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:45,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:45,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:45,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:45,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:45,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:45,582 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 09:28:45,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:45,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:28:45,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332819138] [2021-03-25 09:28:45,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:28:45,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 09:28:45,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159355732] [2021-03-25 09:28:45,604 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 09:28:45,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:28:45,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 09:28:45,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-25 09:28:45,617 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 57 [2021-03-25 09:28:45,619 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 106 flow. Second operand has 9 states, 9 states have (on average 47.888888888888886) internal successors, (431), 9 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:45,620 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:28:45,620 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 57 [2021-03-25 09:28:45,620 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:28:45,916 INFO L129 PetriNetUnfolder]: 29/174 cut-off events. [2021-03-25 09:28:45,917 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2021-03-25 09:28:45,920 INFO L84 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 174 events. 29/174 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 853 event pairs, 3 based on Foata normal form. 1/174 useless extension candidates. Maximal degree in co-relation 255. Up to 28 conditions per place. [2021-03-25 09:28:45,923 INFO L132 encePairwiseOnDemand]: 49/57 looper letters, 21 selfloop transitions, 15 changer transitions 2/74 dead transitions. [2021-03-25 09:28:45,923 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 74 transitions, 242 flow [2021-03-25 09:28:45,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 09:28:45,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 09:28:45,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 556 transitions. [2021-03-25 09:28:45,941 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.886762360446571 [2021-03-25 09:28:45,942 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 556 transitions. [2021-03-25 09:28:45,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 556 transitions. [2021-03-25 09:28:45,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:28:45,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 556 transitions. [2021-03-25 09:28:45,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 50.54545454545455) internal successors, (556), 11 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:45,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 57.0) internal successors, (684), 12 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:45,969 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 57.0) internal successors, (684), 12 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:45,971 INFO L185 Difference]: Start difference. First operand has 54 places, 44 transitions, 106 flow. Second operand 11 states and 556 transitions. [2021-03-25 09:28:45,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 74 transitions, 242 flow [2021-03-25 09:28:45,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 74 transitions, 230 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-03-25 09:28:45,979 INFO L241 Difference]: Finished difference. Result has 62 places, 60 transitions, 186 flow [2021-03-25 09:28:45,981 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=186, PETRI_PLACES=62, PETRI_TRANSITIONS=60} [2021-03-25 09:28:45,982 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 8 predicate places. [2021-03-25 09:28:45,982 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:28:45,982 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 60 transitions, 186 flow [2021-03-25 09:28:45,983 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 60 transitions, 186 flow [2021-03-25 09:28:45,984 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 60 places, 60 transitions, 186 flow [2021-03-25 09:28:46,009 INFO L129 PetriNetUnfolder]: 9/117 cut-off events. [2021-03-25 09:28:46,009 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-03-25 09:28:46,010 INFO L84 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 117 events. 9/117 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 480 event pairs, 2 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 167. Up to 12 conditions per place. [2021-03-25 09:28:46,012 INFO L142 LiptonReduction]: Number of co-enabled transitions 1326 [2021-03-25 09:28:46,062 INFO L154 LiptonReduction]: Checked pairs total: 4265 [2021-03-25 09:28:46,063 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 09:28:46,063 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 81 [2021-03-25 09:28:46,064 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 60 transitions, 188 flow [2021-03-25 09:28:46,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 47.888888888888886) internal successors, (431), 9 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:46,065 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:28:46,065 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, 1, 1, 1, 1, 1] [2021-03-25 09:28:46,065 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 09:28:46,065 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:28:46,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:28:46,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1428181141, now seen corresponding path program 2 times [2021-03-25 09:28:46,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:28:46,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122289877] [2021-03-25 09:28:46,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:28:46,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:28:46,119 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:46,120 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:28:46,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:46,127 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:28:46,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:46,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:28:46,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:46,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 09:28:46,139 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-03-25 09:28:46,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 09:28:46,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:46,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:46,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:46,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 09:28:46,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:46,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:28:46,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:28:46,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122289877] [2021-03-25 09:28:46,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:28:46,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 09:28:46,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103102769] [2021-03-25 09:28:46,188 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 09:28:46,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:28:46,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 09:28:46,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-25 09:28:46,190 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 59 [2021-03-25 09:28:46,190 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 60 transitions, 188 flow. Second operand has 7 states, 7 states have (on average 38.714285714285715) internal successors, (271), 7 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:46,190 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:28:46,190 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 59 [2021-03-25 09:28:46,190 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:28:46,604 INFO L129 PetriNetUnfolder]: 1062/2494 cut-off events. [2021-03-25 09:28:46,604 INFO L130 PetriNetUnfolder]: For 93/93 co-relation queries the response was YES. [2021-03-25 09:28:46,611 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4782 conditions, 2494 events. 1062/2494 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 18886 event pairs, 264 based on Foata normal form. 20/2424 useless extension candidates. Maximal degree in co-relation 4765. Up to 1140 conditions per place. [2021-03-25 09:28:46,625 INFO L132 encePairwiseOnDemand]: 49/59 looper letters, 59 selfloop transitions, 22 changer transitions 0/122 dead transitions. [2021-03-25 09:28:46,625 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 122 transitions, 474 flow [2021-03-25 09:28:46,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 09:28:46,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 09:28:46,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 370 transitions. [2021-03-25 09:28:46,627 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7838983050847458 [2021-03-25 09:28:46,628 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 370 transitions. [2021-03-25 09:28:46,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 370 transitions. [2021-03-25 09:28:46,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:28:46,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 370 transitions. [2021-03-25 09:28:46,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 46.25) internal successors, (370), 8 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:46,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 59.0) internal successors, (531), 9 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:46,631 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 59.0) internal successors, (531), 9 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:46,631 INFO L185 Difference]: Start difference. First operand has 60 places, 60 transitions, 188 flow. Second operand 8 states and 370 transitions. [2021-03-25 09:28:46,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 122 transitions, 474 flow [2021-03-25 09:28:46,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 122 transitions, 472 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-25 09:28:46,639 INFO L241 Difference]: Finished difference. Result has 71 places, 82 transitions, 328 flow [2021-03-25 09:28:46,639 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=328, PETRI_PLACES=71, PETRI_TRANSITIONS=82} [2021-03-25 09:28:46,639 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 17 predicate places. [2021-03-25 09:28:46,640 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:28:46,640 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 82 transitions, 328 flow [2021-03-25 09:28:46,640 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 71 places, 82 transitions, 328 flow [2021-03-25 09:28:46,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 71 places, 82 transitions, 328 flow [2021-03-25 09:28:46,674 INFO L129 PetriNetUnfolder]: 72/432 cut-off events. [2021-03-25 09:28:46,674 INFO L130 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2021-03-25 09:28:46,676 INFO L84 FinitePrefix]: Finished finitePrefix Result has 800 conditions, 432 events. 72/432 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2979 event pairs, 11 based on Foata normal form. 0/423 useless extension candidates. Maximal degree in co-relation 745. Up to 74 conditions per place. [2021-03-25 09:28:46,681 INFO L142 LiptonReduction]: Number of co-enabled transitions 1832 [2021-03-25 09:28:46,724 INFO L154 LiptonReduction]: Checked pairs total: 2051 [2021-03-25 09:28:46,724 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 09:28:46,725 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 86 [2021-03-25 09:28:46,725 INFO L480 AbstractCegarLoop]: Abstraction has has 71 places, 82 transitions, 328 flow [2021-03-25 09:28:46,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 38.714285714285715) internal successors, (271), 7 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:46,726 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:28:46,726 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, 1, 1, 1] [2021-03-25 09:28:46,726 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 09:28:46,726 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:28:46,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:28:46,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1909737286, now seen corresponding path program 1 times [2021-03-25 09:28:46,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:28:46,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715806992] [2021-03-25 09:28:46,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:28:46,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:28:46,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:46,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:28:46,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:46,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:28:46,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:46,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:28:46,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:28:46,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715806992] [2021-03-25 09:28:46,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:28:46,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 09:28:46,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008508803] [2021-03-25 09:28:46,758 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 09:28:46,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:28:46,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 09:28:46,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 09:28:46,759 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 59 [2021-03-25 09:28:46,759 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 82 transitions, 328 flow. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:46,760 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:28:46,760 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 59 [2021-03-25 09:28:46,760 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:28:46,803 INFO L129 PetriNetUnfolder]: 85/523 cut-off events. [2021-03-25 09:28:46,803 INFO L130 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2021-03-25 09:28:46,805 INFO L84 FinitePrefix]: Finished finitePrefix Result has 989 conditions, 523 events. 85/523 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3713 event pairs, 21 based on Foata normal form. 19/531 useless extension candidates. Maximal degree in co-relation 928. Up to 70 conditions per place. [2021-03-25 09:28:46,807 INFO L132 encePairwiseOnDemand]: 55/59 looper letters, 3 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2021-03-25 09:28:46,807 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 82 transitions, 338 flow [2021-03-25 09:28:46,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 09:28:46,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 09:28:46,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 166 transitions. [2021-03-25 09:28:46,808 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9378531073446328 [2021-03-25 09:28:46,808 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 166 transitions. [2021-03-25 09:28:46,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 166 transitions. [2021-03-25 09:28:46,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:28:46,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 166 transitions. [2021-03-25 09:28:46,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:46,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:46,810 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:46,810 INFO L185 Difference]: Start difference. First operand has 71 places, 82 transitions, 328 flow. Second operand 3 states and 166 transitions. [2021-03-25 09:28:46,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 82 transitions, 338 flow [2021-03-25 09:28:46,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 82 transitions, 338 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-25 09:28:46,816 INFO L241 Difference]: Finished difference. Result has 74 places, 82 transitions, 338 flow [2021-03-25 09:28:46,816 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=338, PETRI_PLACES=74, PETRI_TRANSITIONS=82} [2021-03-25 09:28:46,817 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 20 predicate places. [2021-03-25 09:28:46,817 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:28:46,817 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 82 transitions, 338 flow [2021-03-25 09:28:46,818 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 82 transitions, 338 flow [2021-03-25 09:28:46,819 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 74 places, 82 transitions, 338 flow [2021-03-25 09:28:46,854 INFO L129 PetriNetUnfolder]: 94/554 cut-off events. [2021-03-25 09:28:46,854 INFO L130 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2021-03-25 09:28:46,857 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1079 conditions, 554 events. 94/554 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 4036 event pairs, 23 based on Foata normal form. 0/538 useless extension candidates. Maximal degree in co-relation 1022. Up to 80 conditions per place. [2021-03-25 09:28:46,863 INFO L142 LiptonReduction]: Number of co-enabled transitions 1708 [2021-03-25 09:28:47,018 INFO L154 LiptonReduction]: Checked pairs total: 3112 [2021-03-25 09:28:47,019 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 09:28:47,019 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 202 [2021-03-25 09:28:47,024 INFO L480 AbstractCegarLoop]: Abstraction has has 74 places, 82 transitions, 341 flow [2021-03-25 09:28:47,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:47,024 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:28:47,024 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, 1, 1, 1] [2021-03-25 09:28:47,025 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 09:28:47,025 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:28:47,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:28:47,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1286207290, now seen corresponding path program 2 times [2021-03-25 09:28:47,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:28:47,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365349280] [2021-03-25 09:28:47,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:28:47,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:28:47,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:47,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:28:47,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:47,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:28:47,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:47,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:28:47,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:28:47,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365349280] [2021-03-25 09:28:47,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:28:47,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 09:28:47,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479918698] [2021-03-25 09:28:47,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 09:28:47,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:28:47,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 09:28:47,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 09:28:47,094 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 60 [2021-03-25 09:28:47,094 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 82 transitions, 341 flow. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:47,094 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:28:47,095 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 60 [2021-03-25 09:28:47,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:28:47,147 INFO L129 PetriNetUnfolder]: 123/674 cut-off events. [2021-03-25 09:28:47,147 INFO L130 PetriNetUnfolder]: For 109/109 co-relation queries the response was YES. [2021-03-25 09:28:47,150 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1311 conditions, 674 events. 123/674 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5027 event pairs, 42 based on Foata normal form. 16/670 useless extension candidates. Maximal degree in co-relation 1246. Up to 74 conditions per place. [2021-03-25 09:28:47,153 INFO L132 encePairwiseOnDemand]: 56/60 looper letters, 3 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2021-03-25 09:28:47,153 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 82 transitions, 351 flow [2021-03-25 09:28:47,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 09:28:47,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 09:28:47,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2021-03-25 09:28:47,154 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9388888888888889 [2021-03-25 09:28:47,155 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 169 transitions. [2021-03-25 09:28:47,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 169 transitions. [2021-03-25 09:28:47,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:28:47,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 169 transitions. [2021-03-25 09:28:47,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:47,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:47,156 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:47,156 INFO L185 Difference]: Start difference. First operand has 74 places, 82 transitions, 341 flow. Second operand 3 states and 169 transitions. [2021-03-25 09:28:47,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 82 transitions, 351 flow [2021-03-25 09:28:47,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 82 transitions, 345 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 09:28:47,162 INFO L241 Difference]: Finished difference. Result has 75 places, 82 transitions, 345 flow [2021-03-25 09:28:47,163 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=345, PETRI_PLACES=75, PETRI_TRANSITIONS=82} [2021-03-25 09:28:47,163 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 21 predicate places. [2021-03-25 09:28:47,163 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:28:47,163 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 82 transitions, 345 flow [2021-03-25 09:28:47,164 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 82 transitions, 345 flow [2021-03-25 09:28:47,164 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 75 places, 82 transitions, 345 flow [2021-03-25 09:28:47,201 INFO L129 PetriNetUnfolder]: 114/680 cut-off events. [2021-03-25 09:28:47,201 INFO L130 PetriNetUnfolder]: For 89/89 co-relation queries the response was YES. [2021-03-25 09:28:47,204 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1312 conditions, 680 events. 114/680 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5191 event pairs, 28 based on Foata normal form. 0/663 useless extension candidates. Maximal degree in co-relation 1250. Up to 83 conditions per place. [2021-03-25 09:28:47,211 INFO L142 LiptonReduction]: Number of co-enabled transitions 1684 [2021-03-25 09:28:47,372 INFO L154 LiptonReduction]: Checked pairs total: 2552 [2021-03-25 09:28:47,373 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 09:28:47,373 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 210 [2021-03-25 09:28:47,374 INFO L480 AbstractCegarLoop]: Abstraction has has 74 places, 81 transitions, 348 flow [2021-03-25 09:28:47,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:47,374 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:28:47,374 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, 1, 1, 1] [2021-03-25 09:28:47,374 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 09:28:47,374 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:28:47,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:28:47,375 INFO L82 PathProgramCache]: Analyzing trace with hash -626302640, now seen corresponding path program 3 times [2021-03-25 09:28:47,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:28:47,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167268555] [2021-03-25 09:28:47,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:28:47,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:28:47,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:47,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 09:28:47,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:47,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 09:28:47,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:47,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 09:28:47,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:47,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:28:47,558 INFO L142 QuantifierPusher]: treesize reduction 11, result has 56.0 percent of original size [2021-03-25 09:28:47,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 09:28:47,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:47,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:28:47,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:47,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:28:47,590 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 09:28:47,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:47,599 INFO L142 QuantifierPusher]: treesize reduction 12, result has 70.0 percent of original size [2021-03-25 09:28:47,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-03-25 09:28:47,627 INFO L142 QuantifierPusher]: treesize reduction 17, result has 66.0 percent of original size [2021-03-25 09:28:47,630 INFO L147 QuantifierPusher]: treesize reduction 5, result has 84.8 percent of original size 28 [2021-03-25 09:28:47,667 INFO L142 QuantifierPusher]: treesize reduction 15, result has 55.9 percent of original size [2021-03-25 09:28:47,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 09:28:47,695 INFO L142 QuantifierPusher]: treesize reduction 10, result has 70.6 percent of original size [2021-03-25 09:28:47,697 INFO L147 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size 19 [2021-03-25 09:28:47,727 INFO L142 QuantifierPusher]: treesize reduction 31, result has 38.0 percent of original size [2021-03-25 09:28:47,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 09:28:47,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:47,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:28:47,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:28:47,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167268555] [2021-03-25 09:28:47,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:28:47,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-03-25 09:28:47,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598661640] [2021-03-25 09:28:47,755 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-25 09:28:47,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:28:47,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-25 09:28:47,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-03-25 09:28:47,757 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 63 [2021-03-25 09:28:47,757 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 81 transitions, 348 flow. Second operand has 12 states, 12 states have (on average 37.583333333333336) internal successors, (451), 12 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:47,757 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:28:47,757 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 63 [2021-03-25 09:28:47,757 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:28:48,336 INFO L129 PetriNetUnfolder]: 1375/3155 cut-off events. [2021-03-25 09:28:48,336 INFO L130 PetriNetUnfolder]: For 1450/1479 co-relation queries the response was YES. [2021-03-25 09:28:48,349 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7834 conditions, 3155 events. 1375/3155 cut-off events. For 1450/1479 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 24256 event pairs, 517 based on Foata normal form. 35/3046 useless extension candidates. Maximal degree in co-relation 7745. Up to 1910 conditions per place. [2021-03-25 09:28:48,365 INFO L132 encePairwiseOnDemand]: 50/63 looper letters, 73 selfloop transitions, 38 changer transitions 0/151 dead transitions. [2021-03-25 09:28:48,365 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 151 transitions, 807 flow [2021-03-25 09:28:48,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-25 09:28:48,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-25 09:28:48,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 522 transitions. [2021-03-25 09:28:48,367 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6904761904761905 [2021-03-25 09:28:48,367 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 522 transitions. [2021-03-25 09:28:48,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 522 transitions. [2021-03-25 09:28:48,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:28:48,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 522 transitions. [2021-03-25 09:28:48,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 43.5) internal successors, (522), 12 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:48,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 63.0) internal successors, (819), 13 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:48,370 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 63.0) internal successors, (819), 13 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:48,371 INFO L185 Difference]: Start difference. First operand has 74 places, 81 transitions, 348 flow. Second operand 12 states and 522 transitions. [2021-03-25 09:28:48,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 151 transitions, 807 flow [2021-03-25 09:28:48,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 151 transitions, 795 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 09:28:48,382 INFO L241 Difference]: Finished difference. Result has 90 places, 116 transitions, 638 flow [2021-03-25 09:28:48,382 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=638, PETRI_PLACES=90, PETRI_TRANSITIONS=116} [2021-03-25 09:28:48,383 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 36 predicate places. [2021-03-25 09:28:48,383 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:28:48,383 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 116 transitions, 638 flow [2021-03-25 09:28:48,383 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 116 transitions, 638 flow [2021-03-25 09:28:48,385 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 90 places, 116 transitions, 638 flow [2021-03-25 09:28:48,456 INFO L129 PetriNetUnfolder]: 271/1121 cut-off events. [2021-03-25 09:28:48,456 INFO L130 PetriNetUnfolder]: For 644/664 co-relation queries the response was YES. [2021-03-25 09:28:48,462 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2689 conditions, 1121 events. 271/1121 cut-off events. For 644/664 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 9080 event pairs, 56 based on Foata normal form. 8/1080 useless extension candidates. Maximal degree in co-relation 2601. Up to 204 conditions per place. [2021-03-25 09:28:48,472 INFO L142 LiptonReduction]: Number of co-enabled transitions 1952 [2021-03-25 09:28:48,871 INFO L154 LiptonReduction]: Checked pairs total: 3564 [2021-03-25 09:28:48,872 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 09:28:48,872 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 489 [2021-03-25 09:28:48,874 INFO L480 AbstractCegarLoop]: Abstraction has has 90 places, 116 transitions, 643 flow [2021-03-25 09:28:48,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 37.583333333333336) internal successors, (451), 12 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:48,875 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:28:48,875 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] [2021-03-25 09:28:48,875 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 09:28:48,875 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:28:48,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:28:48,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1050591336, now seen corresponding path program 1 times [2021-03-25 09:28:48,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:28:48,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724261293] [2021-03-25 09:28:48,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:28:48,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:28:48,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:48,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:28:48,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:48,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:28:48,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:48,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:28:48,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:28:48,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724261293] [2021-03-25 09:28:48,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:28:48,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 09:28:48,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031058463] [2021-03-25 09:28:48,914 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 09:28:48,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:28:48,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 09:28:48,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 09:28:48,916 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 67 [2021-03-25 09:28:48,916 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 116 transitions, 643 flow. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:48,916 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:28:48,916 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 67 [2021-03-25 09:28:48,916 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:28:49,004 INFO L129 PetriNetUnfolder]: 284/1182 cut-off events. [2021-03-25 09:28:49,004 INFO L130 PetriNetUnfolder]: For 671/698 co-relation queries the response was YES. [2021-03-25 09:28:49,011 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2839 conditions, 1182 events. 284/1182 cut-off events. For 671/698 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 9609 event pairs, 54 based on Foata normal form. 26/1160 useless extension candidates. Maximal degree in co-relation 2745. Up to 196 conditions per place. [2021-03-25 09:28:49,015 INFO L132 encePairwiseOnDemand]: 63/67 looper letters, 3 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2021-03-25 09:28:49,016 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 114 transitions, 635 flow [2021-03-25 09:28:49,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 09:28:49,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 09:28:49,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 190 transitions. [2021-03-25 09:28:49,017 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.945273631840796 [2021-03-25 09:28:49,017 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 190 transitions. [2021-03-25 09:28:49,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 190 transitions. [2021-03-25 09:28:49,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:28:49,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 190 transitions. [2021-03-25 09:28:49,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:49,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:49,019 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:49,019 INFO L185 Difference]: Start difference. First operand has 90 places, 116 transitions, 643 flow. Second operand 3 states and 190 transitions. [2021-03-25 09:28:49,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 114 transitions, 635 flow [2021-03-25 09:28:49,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 114 transitions, 617 flow, removed 9 selfloop flow, removed 0 redundant places. [2021-03-25 09:28:49,030 INFO L241 Difference]: Finished difference. Result has 93 places, 114 transitions, 617 flow [2021-03-25 09:28:49,030 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=617, PETRI_PLACES=93, PETRI_TRANSITIONS=114} [2021-03-25 09:28:49,030 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 39 predicate places. [2021-03-25 09:28:49,031 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:28:49,031 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 114 transitions, 617 flow [2021-03-25 09:28:49,031 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 114 transitions, 617 flow [2021-03-25 09:28:49,032 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 93 places, 114 transitions, 617 flow [2021-03-25 09:28:49,113 INFO L129 PetriNetUnfolder]: 291/1207 cut-off events. [2021-03-25 09:28:49,113 INFO L130 PetriNetUnfolder]: For 664/682 co-relation queries the response was YES. [2021-03-25 09:28:49,120 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2911 conditions, 1207 events. 291/1207 cut-off events. For 664/682 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 9966 event pairs, 53 based on Foata normal form. 7/1165 useless extension candidates. Maximal degree in co-relation 2826. Up to 207 conditions per place. [2021-03-25 09:28:49,132 INFO L142 LiptonReduction]: Number of co-enabled transitions 1840 [2021-03-25 09:28:49,619 INFO L154 LiptonReduction]: Checked pairs total: 3304 [2021-03-25 09:28:49,619 INFO L156 LiptonReduction]: Total number of compositions: 9 [2021-03-25 09:28:49,619 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 588 [2021-03-25 09:28:49,620 INFO L480 AbstractCegarLoop]: Abstraction has has 93 places, 114 transitions, 638 flow [2021-03-25 09:28:49,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:49,620 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:28:49,620 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] [2021-03-25 09:28:49,620 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-25 09:28:49,620 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:28:49,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:28:49,621 INFO L82 PathProgramCache]: Analyzing trace with hash 807472067, now seen corresponding path program 1 times [2021-03-25 09:28:49,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:28:49,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081999303] [2021-03-25 09:28:49,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:28:49,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:28:49,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:49,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:28:49,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:49,652 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:28:49,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:49,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:49,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:49,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 09:28:49,667 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-03-25 09:28:49,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:49,674 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-03-25 09:28:49,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 09:28:49,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:49,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:49,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:49,692 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:49,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:49,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:49,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:49,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:28:49,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:28:49,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081999303] [2021-03-25 09:28:49,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:28:49,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-25 09:28:49,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542446790] [2021-03-25 09:28:49,712 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 09:28:49,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:28:49,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 09:28:49,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-03-25 09:28:49,713 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 76 [2021-03-25 09:28:49,713 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 114 transitions, 638 flow. Second operand has 10 states, 10 states have (on average 37.9) internal successors, (379), 10 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:49,714 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:28:49,714 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 76 [2021-03-25 09:28:49,714 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:28:50,423 INFO L129 PetriNetUnfolder]: 2262/5341 cut-off events. [2021-03-25 09:28:50,423 INFO L130 PetriNetUnfolder]: For 6825/6977 co-relation queries the response was YES. [2021-03-25 09:28:50,450 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15984 conditions, 5341 events. 2262/5341 cut-off events. For 6825/6977 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 46634 event pairs, 775 based on Foata normal form. 149/5233 useless extension candidates. Maximal degree in co-relation 15860. Up to 1698 conditions per place. [2021-03-25 09:28:50,477 INFO L132 encePairwiseOnDemand]: 55/76 looper letters, 92 selfloop transitions, 109 changer transitions 0/241 dead transitions. [2021-03-25 09:28:50,478 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 241 transitions, 1715 flow [2021-03-25 09:28:50,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 09:28:50,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 09:28:50,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 522 transitions. [2021-03-25 09:28:50,480 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6244019138755981 [2021-03-25 09:28:50,480 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 522 transitions. [2021-03-25 09:28:50,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 522 transitions. [2021-03-25 09:28:50,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:28:50,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 522 transitions. [2021-03-25 09:28:50,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 47.45454545454545) internal successors, (522), 11 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:50,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 76.0) internal successors, (912), 12 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:50,483 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 76.0) internal successors, (912), 12 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:50,483 INFO L185 Difference]: Start difference. First operand has 93 places, 114 transitions, 638 flow. Second operand 11 states and 522 transitions. [2021-03-25 09:28:50,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 241 transitions, 1715 flow [2021-03-25 09:28:50,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 241 transitions, 1697 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 09:28:50,516 INFO L241 Difference]: Finished difference. Result has 108 places, 186 transitions, 1460 flow [2021-03-25 09:28:50,516 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=624, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1460, PETRI_PLACES=108, PETRI_TRANSITIONS=186} [2021-03-25 09:28:50,516 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 54 predicate places. [2021-03-25 09:28:50,516 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:28:50,516 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 108 places, 186 transitions, 1460 flow [2021-03-25 09:28:50,517 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 108 places, 186 transitions, 1460 flow [2021-03-25 09:28:50,518 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 108 places, 186 transitions, 1460 flow [2021-03-25 09:28:50,599 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([133] L64-->L65: Formula: (not v_e2_5) InVars {e2=v_e2_5} OutVars{e2=v_e2_5} AuxVars[] AssignedVars[][63], [69#(and (<= i 0) (<= 0 i)), Black: 133#(and (<= n1 n3) (<= 1 n1) (<= n2 0)), Black: 135#(and (<= 1 n3) (<= n2 0) (< n3 n1)), Black: 122#(and (<= n1 n3) (<= 0 n1) (<= n2 0)), Black: 124#(and (<= 1 n1) (<= 0 n3) (<= n2 0)), Black: 125#(and (<= 1 n3) (<= 1 n1) (<= n2 0)), Black: 141#(and (<= n1 n2) (not (= n1 0)) (or (<= n1 0) (= n2 n1)) (< n3 n1)), Black: 143#(and (<= n1 n2) (not (= n1 0)) (or (<= n1 0) (<= 2 n2)) (< n3 n1)), Black: 83#(and (<= 1 i2) (<= i3 0) (<= 2 i) (<= i 2) (<= i2 1) (<= 0 i3)), Black: 154#e3, 157#true, Black: 79#(and (<= i3 0) (<= 1 i) (<= i 1) (<= 0 i3)), 95#true, 32#L77true, 34#L65true, Black: 97#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), Black: 98#(and (<= (+ n3 1) n1) (<= 1 n1) (<= (+ n2 1) n1)), Black: 99#(and (<= (+ n3 1) n1) (<= 1 n1) (= n2 n1)), Black: 101#(and (<= 1 n1) (<= (+ n1 1) n2)), Black: 103#(and (<= n1 n2) (<= 1 n1) (<= n2 n1) (<= n3 n1)), Black: 160#(and (<= 0 n1) (<= n2 n1)), Black: 161#(and (<= 1 n1) (<= (+ n2 1) n1)), Black: 162#(and (<= 1 n1) (= n2 n1)), 48#L45true, Black: 168#(and (<= 1 n1) (<= (+ n2 1) n1) (<= n3 n1)), Black: 170#(and (<= 1 n1) (<= n3 n1) (= n2 n1)), Black: 112#e2, 51#L29true, Black: 172#(and (<= n1 n2) (<= 1 n1) (<= 2 n2)), Black: 159#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), Black: 117#e1, 120#true]) [2021-03-25 09:28:50,599 INFO L384 tUnfolder$Statistics]: this new event has 22 ancestors and is cut-off event [2021-03-25 09:28:50,599 INFO L387 tUnfolder$Statistics]: existing Event has 20 ancestors and is cut-off event [2021-03-25 09:28:50,599 INFO L387 tUnfolder$Statistics]: existing Event has 20 ancestors and is cut-off event [2021-03-25 09:28:50,599 INFO L387 tUnfolder$Statistics]: existing Event has 20 ancestors and is cut-off event [2021-03-25 09:28:50,689 INFO L129 PetriNetUnfolder]: 665/2351 cut-off events. [2021-03-25 09:28:50,690 INFO L130 PetriNetUnfolder]: For 4585/4721 co-relation queries the response was YES. [2021-03-25 09:28:50,706 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7506 conditions, 2351 events. 665/2351 cut-off events. For 4585/4721 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 21697 event pairs, 148 based on Foata normal form. 38/2265 useless extension candidates. Maximal degree in co-relation 7397. Up to 441 conditions per place. [2021-03-25 09:28:50,732 INFO L142 LiptonReduction]: Number of co-enabled transitions 2576 [2021-03-25 09:28:52,725 INFO L154 LiptonReduction]: Checked pairs total: 3021 [2021-03-25 09:28:52,726 INFO L156 LiptonReduction]: Total number of compositions: 32 [2021-03-25 09:28:52,726 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2210 [2021-03-25 09:28:52,726 INFO L480 AbstractCegarLoop]: Abstraction has has 107 places, 185 transitions, 1495 flow [2021-03-25 09:28:52,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 37.9) internal successors, (379), 10 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:52,727 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:28:52,727 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] [2021-03-25 09:28:52,727 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-25 09:28:52,727 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:28:52,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:28:52,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1575860724, now seen corresponding path program 1 times [2021-03-25 09:28:52,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:28:52,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868975999] [2021-03-25 09:28:52,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:28:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:28:52,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:52,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:52,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:52,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:52,766 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:52,767 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:52,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:52,775 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:52,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:52,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:52,791 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 09:28:52,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:28:52,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:28:52,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868975999] [2021-03-25 09:28:52,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:28:52,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 09:28:52,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398294084] [2021-03-25 09:28:52,801 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 09:28:52,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:28:52,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 09:28:52,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-25 09:28:52,804 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 108 [2021-03-25 09:28:52,805 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 185 transitions, 1495 flow. Second operand has 8 states, 8 states have (on average 96.875) internal successors, (775), 8 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:52,805 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:28:52,805 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 108 [2021-03-25 09:28:52,805 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:28:53,261 INFO L129 PetriNetUnfolder]: 804/2713 cut-off events. [2021-03-25 09:28:53,261 INFO L130 PetriNetUnfolder]: For 5539/5814 co-relation queries the response was YES. [2021-03-25 09:28:53,276 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9281 conditions, 2713 events. 804/2713 cut-off events. For 5539/5814 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 25750 event pairs, 174 based on Foata normal form. 89/2642 useless extension candidates. Maximal degree in co-relation 9130. Up to 515 conditions per place. [2021-03-25 09:28:53,292 INFO L132 encePairwiseOnDemand]: 100/108 looper letters, 23 selfloop transitions, 21 changer transitions 1/205 dead transitions. [2021-03-25 09:28:53,292 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 205 transitions, 1671 flow [2021-03-25 09:28:53,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-25 09:28:53,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-25 09:28:53,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 993 transitions. [2021-03-25 09:28:53,295 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9194444444444444 [2021-03-25 09:28:53,295 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 993 transitions. [2021-03-25 09:28:53,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 993 transitions. [2021-03-25 09:28:53,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:28:53,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 993 transitions. [2021-03-25 09:28:53,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 99.3) internal successors, (993), 10 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:53,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 108.0) internal successors, (1188), 11 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:53,301 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 108.0) internal successors, (1188), 11 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:53,301 INFO L185 Difference]: Start difference. First operand has 107 places, 185 transitions, 1495 flow. Second operand 10 states and 993 transitions. [2021-03-25 09:28:53,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 205 transitions, 1671 flow [2021-03-25 09:28:53,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 205 transitions, 1608 flow, removed 23 selfloop flow, removed 2 redundant places. [2021-03-25 09:28:53,331 INFO L241 Difference]: Finished difference. Result has 119 places, 198 transitions, 1565 flow [2021-03-25 09:28:53,332 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=1432, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1565, PETRI_PLACES=119, PETRI_TRANSITIONS=198} [2021-03-25 09:28:53,332 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 65 predicate places. [2021-03-25 09:28:53,332 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:28:53,332 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 198 transitions, 1565 flow [2021-03-25 09:28:53,332 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 198 transitions, 1565 flow [2021-03-25 09:28:53,334 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 119 places, 198 transitions, 1565 flow [2021-03-25 09:28:53,383 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([131] L62-->L63: Formula: (not v_e1_5) InVars {e1=v_e1_5} OutVars{e1=v_e1_5} AuxVars[] AssignedVars[][55], [69#(and (<= i 0) (<= 0 i)), Black: 192#(and (<= 2 i) (<= i1 1) (<= i 2) (<= 1 i1)), Black: 196#(and (<= 2 i2) (<= i2 2) (<= i1 1) (< 2 i) (<= i 3) (<= 1 i1)), Black: 184#(and (<= 1 i) (<= i 1)), Black: 185#(and (<= i1 1) (<= 1 i1)), Black: 186#(and (<= 2 i) (<= i 2)), Black: 133#(and (<= n1 n3) (<= 1 n1) (<= n2 0)), Black: 135#(and (<= 1 n3) (<= n2 0) (< n3 n1)), Black: 122#(and (<= n1 n3) (<= 0 n1) (<= n2 0)), Black: 124#(and (<= 1 n1) (<= 0 n3) (<= n2 0)), Black: 125#(and (<= 1 n3) (<= 1 n1) (<= n2 0)), Black: 141#(and (<= n1 n2) (not (= n1 0)) (or (<= n1 0) (= n2 n1)) (< n3 n1)), Black: 83#(and (<= 1 i2) (<= i3 0) (<= 2 i) (<= i 2) (<= i2 1) (<= 0 i3)), Black: 154#e3, 157#true, Black: 79#(and (<= i3 0) (<= 1 i) (<= i 1) (<= 0 i3)), 95#true, 32#L77true, 35#L46true, 37#L28true, Black: 97#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), Black: 98#(and (<= (+ n3 1) n1) (<= 1 n1) (<= (+ n2 1) n1)), Black: 99#(and (<= (+ n3 1) n1) (<= 1 n1) (= n2 n1)), Black: 103#(and (<= n1 n2) (<= 1 n1) (<= n2 n1) (<= n3 n1)), Black: 160#(and (<= 0 n1) (<= n2 n1)), Black: 161#(and (<= 1 n1) (<= (+ n2 1) n1)), Black: 162#(and (<= 1 n1) (= n2 n1)), Black: 168#(and (<= 1 n1) (<= (+ n2 1) n1) (<= n3 n1)), 49#L63true, Black: 112#e2, Black: 170#(and (<= 1 n1) (<= n3 n1) (= n2 n1)), Black: 172#(and (<= n1 n2) (<= 1 n1) (<= 2 n2)), Black: 159#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), 183#(and (<= i 0) (<= 0 i)), Black: 117#e1, 120#true]) [2021-03-25 09:28:53,383 INFO L384 tUnfolder$Statistics]: this new event has 16 ancestors and is not cut-off event [2021-03-25 09:28:53,383 INFO L387 tUnfolder$Statistics]: existing Event has 17 ancestors and is not cut-off event [2021-03-25 09:28:53,383 INFO L387 tUnfolder$Statistics]: existing Event has 18 ancestors and is not cut-off event [2021-03-25 09:28:53,383 INFO L387 tUnfolder$Statistics]: existing Event has 18 ancestors and is not cut-off event [2021-03-25 09:28:53,392 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([107] L30-->L31: Formula: (not v_e3_1) InVars {e3=v_e3_1} OutVars{e3=v_e3_1} AuxVars[] AssignedVars[][40], [69#(and (<= i 0) (<= 0 i)), Black: 192#(and (<= 2 i) (<= i1 1) (<= i 2) (<= 1 i1)), Black: 196#(and (<= 2 i2) (<= i2 2) (<= i1 1) (< 2 i) (<= i 3) (<= 1 i1)), Black: 184#(and (<= 1 i) (<= i 1)), 9#L62true, Black: 185#(and (<= i1 1) (<= 1 i1)), Black: 186#(and (<= 2 i) (<= i 2)), Black: 133#(and (<= n1 n3) (<= 1 n1) (<= n2 0)), Black: 135#(and (<= 1 n3) (<= n2 0) (< n3 n1)), Black: 122#(and (<= n1 n3) (<= 0 n1) (<= n2 0)), Black: 124#(and (<= 1 n1) (<= 0 n3) (<= n2 0)), Black: 125#(and (<= 1 n3) (<= 1 n1) (<= n2 0)), Black: 141#(and (<= n1 n2) (not (= n1 0)) (or (<= n1 0) (= n2 n1)) (< n3 n1)), 25#L31true, Black: 83#(and (<= 1 i2) (<= i3 0) (<= 2 i) (<= i 2) (<= i2 1) (<= 0 i3)), Black: 154#e3, 157#true, Black: 79#(and (<= i3 0) (<= 1 i) (<= i 1) (<= 0 i3)), 95#true, 32#L77true, Black: 97#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), Black: 98#(and (<= (+ n3 1) n1) (<= 1 n1) (<= (+ n2 1) n1)), Black: 99#(and (<= (+ n3 1) n1) (<= 1 n1) (= n2 n1)), Black: 103#(and (<= n1 n2) (<= 1 n1) (<= n2 n1) (<= n3 n1)), Black: 160#(and (<= 0 n1) (<= n2 n1)), Black: 161#(and (<= 1 n1) (<= (+ n2 1) n1)), 48#L45true, Black: 162#(and (<= 1 n1) (= n2 n1)), Black: 168#(and (<= 1 n1) (<= (+ n2 1) n1) (<= n3 n1)), Black: 112#e2, Black: 170#(and (<= 1 n1) (<= n3 n1) (= n2 n1)), Black: 172#(and (<= n1 n2) (<= 1 n1) (<= 2 n2)), Black: 159#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), 183#(and (<= i 0) (<= 0 i)), Black: 117#e1, 120#true]) [2021-03-25 09:28:53,392 INFO L384 tUnfolder$Statistics]: this new event has 17 ancestors and is not cut-off event [2021-03-25 09:28:53,393 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is not cut-off event [2021-03-25 09:28:53,393 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is not cut-off event [2021-03-25 09:28:53,393 INFO L387 tUnfolder$Statistics]: existing Event has 18 ancestors and is not cut-off event [2021-03-25 09:28:53,518 INFO L129 PetriNetUnfolder]: 759/2660 cut-off events. [2021-03-25 09:28:53,518 INFO L130 PetriNetUnfolder]: For 5513/5675 co-relation queries the response was YES. [2021-03-25 09:28:53,535 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8908 conditions, 2660 events. 759/2660 cut-off events. For 5513/5675 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 25303 event pairs, 181 based on Foata normal form. 51/2552 useless extension candidates. Maximal degree in co-relation 8832. Up to 537 conditions per place. [2021-03-25 09:28:53,565 INFO L142 LiptonReduction]: Number of co-enabled transitions 2638 [2021-03-25 09:28:55,080 INFO L154 LiptonReduction]: Checked pairs total: 2931 [2021-03-25 09:28:55,080 INFO L156 LiptonReduction]: Total number of compositions: 13 [2021-03-25 09:28:55,080 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1748 [2021-03-25 09:28:55,081 INFO L480 AbstractCegarLoop]: Abstraction has has 117 places, 196 transitions, 1582 flow [2021-03-25 09:28:55,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 96.875) internal successors, (775), 8 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:55,081 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:28:55,081 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] [2021-03-25 09:28:55,081 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-25 09:28:55,082 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:28:55,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:28:55,082 INFO L82 PathProgramCache]: Analyzing trace with hash -846196965, now seen corresponding path program 1 times [2021-03-25 09:28:55,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:28:55,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023994833] [2021-03-25 09:28:55,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:28:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:28:55,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:55,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 09:28:55,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:55,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:28:55,138 INFO L142 QuantifierPusher]: treesize reduction 35, result has 22.2 percent of original size [2021-03-25 09:28:55,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:28:55,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:55,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 09:28:55,159 INFO L142 QuantifierPusher]: treesize reduction 4, result has 84.0 percent of original size [2021-03-25 09:28:55,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 09:28:55,167 INFO L142 QuantifierPusher]: treesize reduction 4, result has 84.0 percent of original size [2021-03-25 09:28:55,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 09:28:55,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:55,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 09:28:55,203 INFO L142 QuantifierPusher]: treesize reduction 9, result has 66.7 percent of original size [2021-03-25 09:28:55,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 09:28:55,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:28:55,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:28:55,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:28:55,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023994833] [2021-03-25 09:28:55,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:28:55,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 09:28:55,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874098950] [2021-03-25 09:28:55,220 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 09:28:55,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:28:55,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 09:28:55,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-03-25 09:28:55,221 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 121 [2021-03-25 09:28:55,222 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 196 transitions, 1582 flow. Second operand has 8 states, 8 states have (on average 41.375) internal successors, (331), 8 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:55,222 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:28:55,222 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 121 [2021-03-25 09:28:55,222 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:28:56,650 INFO L129 PetriNetUnfolder]: 3851/9023 cut-off events. [2021-03-25 09:28:56,650 INFO L130 PetriNetUnfolder]: For 28347/28866 co-relation queries the response was YES. [2021-03-25 09:28:56,706 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34264 conditions, 9023 events. 3851/9023 cut-off events. For 28347/28866 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 86745 event pairs, 902 based on Foata normal form. 216/8825 useless extension candidates. Maximal degree in co-relation 34079. Up to 2695 conditions per place. [2021-03-25 09:28:56,749 INFO L132 encePairwiseOnDemand]: 79/121 looper letters, 224 selfloop transitions, 101 changer transitions 5/381 dead transitions. [2021-03-25 09:28:56,749 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 381 transitions, 3594 flow [2021-03-25 09:28:56,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-25 09:28:56,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-25 09:28:56,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 568 transitions. [2021-03-25 09:28:56,751 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.46942148760330576 [2021-03-25 09:28:56,751 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 568 transitions. [2021-03-25 09:28:56,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 568 transitions. [2021-03-25 09:28:56,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:28:56,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 568 transitions. [2021-03-25 09:28:56,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 56.8) internal successors, (568), 10 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:56,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 121.0) internal successors, (1331), 11 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:56,755 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 121.0) internal successors, (1331), 11 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:28:56,755 INFO L185 Difference]: Start difference. First operand has 117 places, 196 transitions, 1582 flow. Second operand 10 states and 568 transitions. [2021-03-25 09:28:56,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 381 transitions, 3594 flow [2021-03-25 09:28:56,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 381 transitions, 3576 flow, removed 6 selfloop flow, removed 1 redundant places. [2021-03-25 09:28:56,871 INFO L241 Difference]: Finished difference. Result has 133 places, 258 transitions, 2497 flow [2021-03-25 09:28:56,871 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=1551, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2497, PETRI_PLACES=133, PETRI_TRANSITIONS=258} [2021-03-25 09:28:56,871 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 79 predicate places. [2021-03-25 09:28:56,872 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:28:56,872 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 258 transitions, 2497 flow [2021-03-25 09:28:56,872 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 258 transitions, 2497 flow [2021-03-25 09:28:56,874 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 133 places, 258 transitions, 2497 flow [2021-03-25 09:28:57,055 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([133] L64-->L65: Formula: (not v_e2_5) InVars {e2=v_e2_5} OutVars{e2=v_e2_5} AuxVars[] AssignedVars[][171], [69#(and (<= i 0) (<= 0 i)), Black: 192#(and (<= 2 i) (<= i1 1) (<= i 2) (<= 1 i1)), Black: 196#(and (<= 2 i2) (<= i2 2) (<= i1 1) (< 2 i) (<= i 3) (<= 1 i1)), Black: 184#(and (<= 1 i) (<= i 1)), Black: 185#(and (<= i1 1) (<= 1 i1)), Black: 186#(and (<= 2 i) (<= i 2)), Black: 133#(and (<= n1 n3) (<= 1 n1) (<= n2 0)), Black: 135#(and (<= 1 n3) (<= n2 0) (< n3 n1)), 210#(and (<= 1 n3) (<= n3 n2) (not (= n3 n2))), Black: 122#(and (<= n1 n3) (<= 0 n1) (<= n2 0)), Black: 124#(and (<= 1 n1) (<= 0 n3) (<= n2 0)), Black: 125#(and (<= 1 n3) (<= 1 n1) (<= n2 0)), Black: 141#(and (<= n1 n2) (not (= n1 0)) (or (<= n1 0) (= n2 n1)) (< n3 n1)), Black: 208#(and (<= 1 n3) (<= n3 (+ n2 1))), Black: 209#(and (<= 1 n3) (<= n3 n2)), Black: 83#(and (<= 1 i2) (<= i3 0) (<= 2 i) (<= i 2) (<= i2 1) (<= 0 i3)), Black: 212#(and (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 214#(and (<= n1 n3) (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 154#e3, Black: 205#(and (<= n1 n3) (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 79#(and (<= i3 0) (<= 1 i) (<= i 1) (<= 0 i3)), Black: 206#(and (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 207#(and (<= n3 n2) (<= 0 n3)), 95#true, 32#L77true, 34#L65true, Black: 97#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), Black: 98#(and (<= (+ n3 1) n1) (<= 1 n1) (<= (+ n2 1) n1)), Black: 99#(and (<= (+ n3 1) n1) (<= 1 n1) (= n2 n1)), 172#(and (<= n1 n2) (<= 1 n1) (<= 2 n2)), Black: 103#(and (<= n1 n2) (<= 1 n1) (<= n2 n1) (<= n3 n1)), Black: 160#(and (<= 0 n1) (<= n2 n1)), Black: 161#(and (<= 1 n1) (<= (+ n2 1) n1)), 48#L45true, Black: 162#(and (<= 1 n1) (= n2 n1)), Black: 168#(and (<= 1 n1) (<= (+ n2 1) n1) (<= n3 n1)), Black: 170#(and (<= 1 n1) (<= n3 n1) (= n2 n1)), Black: 112#e2, 51#L29true, Black: 159#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), Black: 117#e1, 120#true]) [2021-03-25 09:28:57,056 INFO L384 tUnfolder$Statistics]: this new event has 20 ancestors and is cut-off event [2021-03-25 09:28:57,056 INFO L387 tUnfolder$Statistics]: existing Event has 17 ancestors and is cut-off event [2021-03-25 09:28:57,056 INFO L387 tUnfolder$Statistics]: existing Event has 18 ancestors and is cut-off event [2021-03-25 09:28:57,056 INFO L387 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2021-03-25 09:28:57,140 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([148] L34-->thread1EXIT: Formula: (= v_n1_15 0) InVars {} OutVars{n1=v_n1_15} AuxVars[] AssignedVars[n1][37], [192#(and (<= 2 i) (<= i1 1) (<= i 2) (<= 1 i1)), 70#(and (<= i3 0) (<= 0 i3)), Black: 196#(and (<= 2 i2) (<= i2 2) (<= i1 1) (< 2 i) (<= i 3) (<= 1 i1)), Black: 184#(and (<= 1 i) (<= i 1)), Black: 185#(and (<= i1 1) (<= 1 i1)), Black: 186#(and (<= 2 i) (<= i 2)), 10#thread1EXITtrue, 207#(and (<= n3 n2) (<= 0 n3)), Black: 133#(and (<= n1 n3) (<= 1 n1) (<= n2 0)), Black: 135#(and (<= 1 n3) (<= n2 0) (< n3 n1)), Black: 122#(and (<= n1 n3) (<= 0 n1) (<= n2 0)), Black: 124#(and (<= 1 n1) (<= 0 n3) (<= n2 0)), Black: 125#(and (<= 1 n3) (<= 1 n1) (<= n2 0)), Black: 141#(and (<= n1 n2) (not (= n1 0)) (or (<= n1 0) (= n2 n1)) (< n3 n1)), Black: 208#(and (<= 1 n3) (<= n3 (+ n2 1))), Black: 209#(and (<= 1 n3) (<= n3 n2)), Black: 210#(and (<= 1 n3) (<= n3 n2) (not (= n3 n2))), Black: 83#(and (<= 1 i2) (<= i3 0) (<= 2 i) (<= i 2) (<= i2 1) (<= 0 i3)), Black: 212#(and (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 214#(and (<= n1 n3) (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 69#(and (<= i 0) (<= 0 i)), Black: 154#e3, Black: 205#(and (<= n1 n3) (<= n3 n2) (<= 0 n3) (<= n2 n3)), 157#true, Black: 206#(and (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 79#(and (<= i3 0) (<= 1 i) (<= i 1) (<= 0 i3)), 95#true, 32#L77true, 35#L46true, Black: 97#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), Black: 98#(and (<= (+ n3 1) n1) (<= 1 n1) (<= (+ n2 1) n1)), Black: 99#(and (<= (+ n3 1) n1) (<= 1 n1) (= n2 n1)), Black: 103#(and (<= n1 n2) (<= 1 n1) (<= n2 n1) (<= n3 n1)), Black: 160#(and (<= 0 n1) (<= n2 n1)), Black: 161#(and (<= 1 n1) (<= (+ n2 1) n1)), Black: 162#(and (<= 1 n1) (= n2 n1)), Black: 168#(and (<= 1 n1) (<= (+ n2 1) n1) (<= n3 n1)), Black: 112#e2, 50#thread3EXITtrue, Black: 170#(and (<= 1 n1) (<= n3 n1) (= n2 n1)), Black: 172#(and (<= n1 n2) (<= 1 n1) (<= 2 n2)), Black: 159#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), Black: 117#e1, 120#true]) [2021-03-25 09:28:57,141 INFO L384 tUnfolder$Statistics]: this new event has 24 ancestors and is cut-off event [2021-03-25 09:28:57,141 INFO L387 tUnfolder$Statistics]: existing Event has 23 ancestors and is cut-off event [2021-03-25 09:28:57,141 INFO L387 tUnfolder$Statistics]: existing Event has 23 ancestors and is cut-off event [2021-03-25 09:28:57,141 INFO L387 tUnfolder$Statistics]: existing Event has 23 ancestors and is cut-off event [2021-03-25 09:28:57,152 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([121] L48-->L49: Formula: (or (= v_n3_4 0) (not (< v_n3_4 v_n2_10))) InVars {n2=v_n2_10, n3=v_n3_4} OutVars{n2=v_n2_10, n3=v_n3_4} AuxVars[] AssignedVars[][198], [Black: 192#(and (<= 2 i) (<= i1 1) (<= i 2) (<= 1 i1)), Black: 196#(and (<= 2 i2) (<= i2 2) (<= i1 1) (< 2 i) (<= i 3) (<= 1 i1)), Black: 185#(and (<= i1 1) (<= 1 i1)), Black: 186#(and (<= 2 i) (<= i 2)), 207#(and (<= n3 n2) (<= 0 n3)), 79#(and (<= i3 0) (<= 1 i) (<= i 1) (<= 0 i3)), Black: 133#(and (<= n1 n3) (<= 1 n1) (<= n2 0)), Black: 135#(and (<= 1 n3) (<= n2 0) (< n3 n1)), Black: 122#(and (<= n1 n3) (<= 0 n1) (<= n2 0)), Black: 124#(and (<= 1 n1) (<= 0 n3) (<= n2 0)), Black: 125#(and (<= 1 n3) (<= 1 n1) (<= n2 0)), Black: 141#(and (<= n1 n2) (not (= n1 0)) (or (<= n1 0) (= n2 n1)) (< n3 n1)), Black: 208#(and (<= 1 n3) (<= n3 (+ n2 1))), Black: 209#(and (<= 1 n3) (<= n3 n2)), Black: 210#(and (<= 1 n3) (<= n3 n2) (not (= n3 n2))), Black: 83#(and (<= 1 i2) (<= i3 0) (<= 2 i) (<= i 2) (<= i2 1) (<= 0 i3)), Black: 212#(and (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 154#e3, Black: 69#(and (<= i 0) (<= 0 i)), Black: 214#(and (<= n1 n3) (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 205#(and (<= n1 n3) (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 206#(and (<= n3 n2) (<= 0 n3) (<= n2 n3)), 159#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), 95#true, 32#L77true, 37#L28true, Black: 97#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), Black: 98#(and (<= (+ n3 1) n1) (<= 1 n1) (<= (+ n2 1) n1)), Black: 99#(and (<= (+ n3 1) n1) (<= 1 n1) (= n2 n1)), 44#L49true, Black: 103#(and (<= n1 n2) (<= 1 n1) (<= n2 n1) (<= n3 n1)), Black: 160#(and (<= 0 n1) (<= n2 n1)), Black: 161#(and (<= 1 n1) (<= (+ n2 1) n1)), Black: 162#(and (<= 1 n1) (= n2 n1)), Black: 168#(and (<= 1 n1) (<= (+ n2 1) n1) (<= n3 n1)), 50#thread3EXITtrue, Black: 170#(and (<= 1 n1) (<= n3 n1) (= n2 n1)), Black: 112#e2, Black: 172#(and (<= n1 n2) (<= 1 n1) (<= 2 n2)), Black: 117#e1, 120#true, 184#(and (<= 1 i) (<= i 1))]) [2021-03-25 09:28:57,153 INFO L384 tUnfolder$Statistics]: this new event has 23 ancestors and is not cut-off event [2021-03-25 09:28:57,153 INFO L387 tUnfolder$Statistics]: existing Event has 23 ancestors and is not cut-off event [2021-03-25 09:28:57,153 INFO L387 tUnfolder$Statistics]: existing Event has 26 ancestors and is not cut-off event [2021-03-25 09:28:57,153 INFO L387 tUnfolder$Statistics]: existing Event has 26 ancestors and is not cut-off event [2021-03-25 09:28:57,215 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([150] L68-->thread3EXIT: Formula: (= v_n3_15 0) InVars {} OutVars{n3=v_n3_15} AuxVars[] AssignedVars[n3][230], [67#true, Black: 192#(and (<= 2 i) (<= i1 1) (<= i 2) (<= 1 i1)), Black: 196#(and (<= 2 i2) (<= i2 2) (<= i1 1) (< 2 i) (<= i 3) (<= 1 i1)), Black: 184#(and (<= 1 i) (<= i 1)), Black: 185#(and (<= i1 1) (<= 1 i1)), Black: 186#(and (<= 2 i) (<= i 2)), 10#thread1EXITtrue, 207#(and (<= n3 n2) (<= 0 n3)), Black: 133#(and (<= n1 n3) (<= 1 n1) (<= n2 0)), Black: 135#(and (<= 1 n3) (<= n2 0) (< n3 n1)), Black: 122#(and (<= n1 n3) (<= 0 n1) (<= n2 0)), Black: 124#(and (<= 1 n1) (<= 0 n3) (<= n2 0)), Black: 125#(and (<= 1 n3) (<= 1 n1) (<= n2 0)), Black: 141#(and (<= n1 n2) (not (= n1 0)) (or (<= n1 0) (= n2 n1)) (< n3 n1)), Black: 208#(and (<= 1 n3) (<= n3 (+ n2 1))), Black: 209#(and (<= 1 n3) (<= n3 n2)), Black: 210#(and (<= 1 n3) (<= n3 n2) (not (= n3 n2))), Black: 83#(and (<= 1 i2) (<= i3 0) (<= 2 i) (<= i 2) (<= i2 1) (<= 0 i3)), Black: 212#(and (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 214#(and (<= n1 n3) (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 154#e3, Black: 69#(and (<= i 0) (<= 0 i)), Black: 205#(and (<= n1 n3) (<= n3 n2) (<= 0 n3) (<= n2 n3)), 157#true, Black: 79#(and (<= i3 0) (<= 1 i) (<= i 1) (<= 0 i3)), Black: 206#(and (<= n3 n2) (<= 0 n3) (<= n2 n3)), 95#true, 32#L77true, Black: 97#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), Black: 98#(and (<= (+ n3 1) n1) (<= 1 n1) (<= (+ n2 1) n1)), Black: 99#(and (<= (+ n3 1) n1) (<= 1 n1) (= n2 n1)), Black: 103#(and (<= n1 n2) (<= 1 n1) (<= n2 n1) (<= n3 n1)), Black: 160#(and (<= 0 n1) (<= n2 n1)), Black: 161#(and (<= 1 n1) (<= (+ n2 1) n1)), Black: 162#(and (<= 1 n1) (= n2 n1)), 48#L45true, Black: 168#(and (<= 1 n1) (<= (+ n2 1) n1) (<= n3 n1)), Black: 112#e2, 50#thread3EXITtrue, Black: 170#(and (<= 1 n1) (<= n3 n1) (= n2 n1)), Black: 172#(and (<= n1 n2) (<= 1 n1) (<= 2 n2)), Black: 159#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), 181#true, Black: 117#e1, 120#true]) [2021-03-25 09:28:57,215 INFO L384 tUnfolder$Statistics]: this new event has 27 ancestors and is cut-off event [2021-03-25 09:28:57,215 INFO L387 tUnfolder$Statistics]: existing Event has 27 ancestors and is cut-off event [2021-03-25 09:28:57,215 INFO L387 tUnfolder$Statistics]: existing Event has 27 ancestors and is cut-off event [2021-03-25 09:28:57,215 INFO L387 tUnfolder$Statistics]: existing Event has 26 ancestors and is cut-off event [2021-03-25 09:28:57,217 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([150] L68-->thread3EXIT: Formula: (= v_n3_15 0) InVars {} OutVars{n3=v_n3_15} AuxVars[] AssignedVars[n3][230], [67#true, Black: 192#(and (<= 2 i) (<= i1 1) (<= i 2) (<= 1 i1)), Black: 196#(and (<= 2 i2) (<= i2 2) (<= i1 1) (< 2 i) (<= i 3) (<= 1 i1)), Black: 184#(and (<= 1 i) (<= i 1)), Black: 185#(and (<= i1 1) (<= 1 i1)), Black: 186#(and (<= 2 i) (<= i 2)), 10#thread1EXITtrue, 207#(and (<= n3 n2) (<= 0 n3)), Black: 133#(and (<= n1 n3) (<= 1 n1) (<= n2 0)), Black: 135#(and (<= 1 n3) (<= n2 0) (< n3 n1)), Black: 122#(and (<= n1 n3) (<= 0 n1) (<= n2 0)), Black: 124#(and (<= 1 n1) (<= 0 n3) (<= n2 0)), Black: 125#(and (<= 1 n3) (<= 1 n1) (<= n2 0)), Black: 141#(and (<= n1 n2) (not (= n1 0)) (or (<= n1 0) (= n2 n1)) (< n3 n1)), Black: 208#(and (<= 1 n3) (<= n3 (+ n2 1))), Black: 209#(and (<= 1 n3) (<= n3 n2)), Black: 210#(and (<= 1 n3) (<= n3 n2) (not (= n3 n2))), Black: 83#(and (<= 1 i2) (<= i3 0) (<= 2 i) (<= i 2) (<= i2 1) (<= 0 i3)), Black: 212#(and (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 69#(and (<= i 0) (<= 0 i)), Black: 154#e3, Black: 214#(and (<= n1 n3) (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 205#(and (<= n1 n3) (<= n3 n2) (<= 0 n3) (<= n2 n3)), 157#true, Black: 79#(and (<= i3 0) (<= 1 i) (<= i 1) (<= 0 i3)), Black: 206#(and (<= n3 n2) (<= 0 n3) (<= n2 n3)), 95#true, 32#L77true, Black: 97#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), Black: 98#(and (<= (+ n3 1) n1) (<= 1 n1) (<= (+ n2 1) n1)), Black: 99#(and (<= (+ n3 1) n1) (<= 1 n1) (= n2 n1)), Black: 103#(and (<= n1 n2) (<= 1 n1) (<= n2 n1) (<= n3 n1)), Black: 160#(and (<= 0 n1) (<= n2 n1)), Black: 161#(and (<= 1 n1) (<= (+ n2 1) n1)), 48#L45true, Black: 162#(and (<= 1 n1) (= n2 n1)), Black: 168#(and (<= 1 n1) (<= (+ n2 1) n1) (<= n3 n1)), Black: 112#e2, 50#thread3EXITtrue, Black: 170#(and (<= 1 n1) (<= n3 n1) (= n2 n1)), Black: 172#(and (<= n1 n2) (<= 1 n1) (<= 2 n2)), Black: 159#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), 181#true, Black: 117#e1, 120#true]) [2021-03-25 09:28:57,217 INFO L384 tUnfolder$Statistics]: this new event has 26 ancestors and is not cut-off event [2021-03-25 09:28:57,217 INFO L387 tUnfolder$Statistics]: existing Event has 27 ancestors and is not cut-off event [2021-03-25 09:28:57,217 INFO L387 tUnfolder$Statistics]: existing Event has 27 ancestors and is not cut-off event [2021-03-25 09:28:57,217 INFO L387 tUnfolder$Statistics]: existing Event has 27 ancestors and is not cut-off event [2021-03-25 09:28:57,217 INFO L387 tUnfolder$Statistics]: existing Event has 26 ancestors and is not cut-off event [2021-03-25 09:28:57,325 INFO L129 PetriNetUnfolder]: 1808/5582 cut-off events. [2021-03-25 09:28:57,326 INFO L130 PetriNetUnfolder]: For 17802/18291 co-relation queries the response was YES. [2021-03-25 09:28:57,365 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21574 conditions, 5582 events. 1808/5582 cut-off events. For 17802/18291 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 58676 event pairs, 457 based on Foata normal form. 127/5273 useless extension candidates. Maximal degree in co-relation 21413. Up to 1227 conditions per place. [2021-03-25 09:28:57,430 INFO L142 LiptonReduction]: Number of co-enabled transitions 3474 [2021-03-25 09:29:01,090 INFO L154 LiptonReduction]: Checked pairs total: 1739 [2021-03-25 09:29:01,090 INFO L156 LiptonReduction]: Total number of compositions: 21 [2021-03-25 09:29:01,091 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4219 [2021-03-25 09:29:01,091 INFO L480 AbstractCegarLoop]: Abstraction has has 133 places, 258 transitions, 2523 flow [2021-03-25 09:29:01,091 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 41.375) internal successors, (331), 8 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:29:01,091 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:29:01,091 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] [2021-03-25 09:29:01,092 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-25 09:29:01,092 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:29:01,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:29:01,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1555792111, now seen corresponding path program 1 times [2021-03-25 09:29:01,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:29:01,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300397688] [2021-03-25 09:29:01,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:29:01,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:29:01,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:29:01,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 09:29:01,131 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:29:01,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 09:29:01,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:29:01,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 09:29:01,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:29:01,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 09:29:01,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:29:01,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:29:01,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:29:01,163 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 09:29:01,174 INFO L142 QuantifierPusher]: treesize reduction 15, result has 46.4 percent of original size [2021-03-25 09:29:01,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 09:29:01,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:29:01,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:29:01,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:29:01,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300397688] [2021-03-25 09:29:01,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:29:01,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 09:29:01,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586811704] [2021-03-25 09:29:01,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 09:29:01,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:29:01,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 09:29:01,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-25 09:29:01,186 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 142 [2021-03-25 09:29:01,186 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 258 transitions, 2523 flow. Second operand has 7 states, 7 states have (on average 41.57142857142857) internal successors, (291), 7 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:29:01,187 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:29:01,187 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 142 [2021-03-25 09:29:01,187 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:29:02,796 INFO L129 PetriNetUnfolder]: 4706/11233 cut-off events. [2021-03-25 09:29:02,797 INFO L130 PetriNetUnfolder]: For 52853/53863 co-relation queries the response was YES. [2021-03-25 09:29:02,851 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50180 conditions, 11233 events. 4706/11233 cut-off events. For 52853/53863 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 114695 event pairs, 1390 based on Foata normal form. 105/10711 useless extension candidates. Maximal degree in co-relation 49923. Up to 5377 conditions per place. [2021-03-25 09:29:02,903 INFO L132 encePairwiseOnDemand]: 106/142 looper letters, 197 selfloop transitions, 99 changer transitions 23/370 dead transitions. [2021-03-25 09:29:02,903 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 370 transitions, 4101 flow [2021-03-25 09:29:02,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 09:29:02,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 09:29:02,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 510 transitions. [2021-03-25 09:29:02,905 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.39906103286384975 [2021-03-25 09:29:02,906 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 510 transitions. [2021-03-25 09:29:02,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 510 transitions. [2021-03-25 09:29:02,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:29:02,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 510 transitions. [2021-03-25 09:29:02,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 56.666666666666664) internal successors, (510), 9 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:29:02,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 142.0) internal successors, (1420), 10 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:29:02,909 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 142.0) internal successors, (1420), 10 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:29:02,909 INFO L185 Difference]: Start difference. First operand has 133 places, 258 transitions, 2523 flow. Second operand 9 states and 510 transitions. [2021-03-25 09:29:02,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 370 transitions, 4101 flow [2021-03-25 09:29:03,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 370 transitions, 4071 flow, removed 15 selfloop flow, removed 0 redundant places. [2021-03-25 09:29:03,151 INFO L241 Difference]: Finished difference. Result has 146 places, 299 transitions, 3189 flow [2021-03-25 09:29:03,151 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=2466, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3189, PETRI_PLACES=146, PETRI_TRANSITIONS=299} [2021-03-25 09:29:03,152 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 92 predicate places. [2021-03-25 09:29:03,152 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:29:03,152 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 146 places, 299 transitions, 3189 flow [2021-03-25 09:29:03,152 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 146 places, 299 transitions, 3189 flow [2021-03-25 09:29:03,153 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 142 places, 299 transitions, 3189 flow [2021-03-25 09:29:03,780 INFO L129 PetriNetUnfolder]: 2194/6814 cut-off events. [2021-03-25 09:29:03,780 INFO L130 PetriNetUnfolder]: For 27361/27836 co-relation queries the response was YES. [2021-03-25 09:29:03,814 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28861 conditions, 6814 events. 2194/6814 cut-off events. For 27361/27836 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 75048 event pairs, 554 based on Foata normal form. 135/6426 useless extension candidates. Maximal degree in co-relation 28582. Up to 1563 conditions per place. [2021-03-25 09:29:03,945 INFO L142 LiptonReduction]: Number of co-enabled transitions 3834 [2021-03-25 09:29:08,873 INFO L154 LiptonReduction]: Checked pairs total: 1862 [2021-03-25 09:29:08,873 INFO L156 LiptonReduction]: Total number of compositions: 11 [2021-03-25 09:29:08,874 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5722 [2021-03-25 09:29:08,874 INFO L480 AbstractCegarLoop]: Abstraction has has 142 places, 299 transitions, 3203 flow [2021-03-25 09:29:08,874 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.57142857142857) internal successors, (291), 7 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:29:08,874 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:29:08,874 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] [2021-03-25 09:29:08,875 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-25 09:29:08,875 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:29:08,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:29:08,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1046112574, now seen corresponding path program 1 times [2021-03-25 09:29:08,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:29:08,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619006672] [2021-03-25 09:29:08,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:29:08,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:29:08,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:29:08,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 09:29:08,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:29:08,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:29:08,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:29:08,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:29:08,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:29:08,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:29:08,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:29:08,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 09:29:08,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:29:08,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 09:29:08,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:29:08,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 09:29:08,987 INFO L142 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-03-25 09:29:08,989 INFO L147 QuantifierPusher]: treesize reduction 3, result has 84.2 percent of original size 16 [2021-03-25 09:29:09,014 INFO L142 QuantifierPusher]: treesize reduction 8, result has 66.7 percent of original size [2021-03-25 09:29:09,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 09:29:09,029 INFO L142 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size [2021-03-25 09:29:09,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 09:29:09,050 INFO L142 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-03-25 09:29:09,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:29:09,062 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:29:09,062 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:29:09,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:29:09,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619006672] [2021-03-25 09:29:09,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:29:09,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-03-25 09:29:09,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184350470] [2021-03-25 09:29:09,064 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-25 09:29:09,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:29:09,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-25 09:29:09,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-03-25 09:29:09,065 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 153 [2021-03-25 09:29:09,066 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 299 transitions, 3203 flow. Second operand has 12 states, 12 states have (on average 40.583333333333336) internal successors, (487), 12 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:29:09,066 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:29:09,066 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 153 [2021-03-25 09:29:09,066 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:29:11,768 INFO L129 PetriNetUnfolder]: 6039/14392 cut-off events. [2021-03-25 09:29:11,768 INFO L130 PetriNetUnfolder]: For 82180/83333 co-relation queries the response was YES. [2021-03-25 09:29:11,866 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68021 conditions, 14392 events. 6039/14392 cut-off events. For 82180/83333 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 153033 event pairs, 1015 based on Foata normal form. 539/14271 useless extension candidates. Maximal degree in co-relation 67711. Up to 2781 conditions per place. [2021-03-25 09:29:11,937 INFO L132 encePairwiseOnDemand]: 86/153 looper letters, 247 selfloop transitions, 353 changer transitions 0/651 dead transitions. [2021-03-25 09:29:11,938 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 651 transitions, 8129 flow [2021-03-25 09:29:11,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-25 09:29:11,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-03-25 09:29:11,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 930 transitions. [2021-03-25 09:29:11,943 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3575547866205306 [2021-03-25 09:29:11,943 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 930 transitions. [2021-03-25 09:29:11,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 930 transitions. [2021-03-25 09:29:11,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:29:11,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 930 transitions. [2021-03-25 09:29:11,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 54.705882352941174) internal successors, (930), 17 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:29:11,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 153.0) internal successors, (2754), 18 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:29:11,956 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 153.0) internal successors, (2754), 18 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:29:11,956 INFO L185 Difference]: Start difference. First operand has 142 places, 299 transitions, 3203 flow. Second operand 17 states and 930 transitions. [2021-03-25 09:29:11,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 651 transitions, 8129 flow [2021-03-25 09:29:12,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 651 transitions, 8089 flow, removed 20 selfloop flow, removed 1 redundant places. [2021-03-25 09:29:12,411 INFO L241 Difference]: Finished difference. Result has 171 places, 515 transitions, 7237 flow [2021-03-25 09:29:12,412 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=3191, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=7237, PETRI_PLACES=171, PETRI_TRANSITIONS=515} [2021-03-25 09:29:12,412 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 117 predicate places. [2021-03-25 09:29:12,412 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:29:12,412 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 171 places, 515 transitions, 7237 flow [2021-03-25 09:29:12,412 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 171 places, 515 transitions, 7237 flow [2021-03-25 09:29:12,416 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 171 places, 515 transitions, 7237 flow [2021-03-25 09:29:13,598 INFO L129 PetriNetUnfolder]: 3628/10162 cut-off events. [2021-03-25 09:29:13,599 INFO L130 PetriNetUnfolder]: For 82233/83578 co-relation queries the response was YES. [2021-03-25 09:29:13,660 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52036 conditions, 10162 events. 3628/10162 cut-off events. For 82233/83578 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 113867 event pairs, 712 based on Foata normal form. 346/9882 useless extension candidates. Maximal degree in co-relation 51664. Up to 2371 conditions per place. [2021-03-25 09:29:13,746 INFO L142 LiptonReduction]: Number of co-enabled transitions 5616 [2021-03-25 09:29:28,235 INFO L154 LiptonReduction]: Checked pairs total: 1588 [2021-03-25 09:29:28,235 INFO L156 LiptonReduction]: Total number of compositions: 19 [2021-03-25 09:29:28,235 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 15823 [2021-03-25 09:29:28,236 INFO L480 AbstractCegarLoop]: Abstraction has has 170 places, 514 transitions, 7265 flow [2021-03-25 09:29:28,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 40.583333333333336) internal successors, (487), 12 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:29:28,236 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:29:28,236 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] [2021-03-25 09:29:28,236 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-25 09:29:28,236 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:29:28,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:29:28,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1464341108, now seen corresponding path program 2 times [2021-03-25 09:29:28,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:29:28,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178223028] [2021-03-25 09:29:28,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:29:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:29:28,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:29:28,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 09:29:28,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:29:28,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 09:29:28,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:29:28,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 09:29:28,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:29:28,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:29:28,304 INFO L142 QuantifierPusher]: treesize reduction 7, result has 68.2 percent of original size [2021-03-25 09:29:28,306 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 09:29:28,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:29:28,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 09:29:28,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:29:28,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 09:29:28,337 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:29:28,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 09:29:28,347 INFO L142 QuantifierPusher]: treesize reduction 21, result has 27.6 percent of original size [2021-03-25 09:29:28,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-25 09:29:28,356 INFO L142 QuantifierPusher]: treesize reduction 21, result has 27.6 percent of original size [2021-03-25 09:29:28,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-25 09:29:28,366 INFO L142 QuantifierPusher]: treesize reduction 21, result has 27.6 percent of original size [2021-03-25 09:29:28,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-25 09:29:28,367 INFO L142 QuantifierPusher]: treesize reduction 6, result has 64.7 percent of original size [2021-03-25 09:29:28,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 09:29:28,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:29:28,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:29:28,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:29:28,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178223028] [2021-03-25 09:29:28,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:29:28,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-03-25 09:29:28,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041771565] [2021-03-25 09:29:28,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-25 09:29:28,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:29:28,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-25 09:29:28,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-03-25 09:29:28,383 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 172 [2021-03-25 09:29:28,384 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 514 transitions, 7265 flow. Second operand has 12 states, 12 states have (on average 40.583333333333336) internal successors, (487), 12 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:29:28,384 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:29:28,384 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 172 [2021-03-25 09:29:28,384 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:29:31,892 INFO L129 PetriNetUnfolder]: 5548/13624 cut-off events. [2021-03-25 09:29:31,892 INFO L130 PetriNetUnfolder]: For 146425/149163 co-relation queries the response was YES. [2021-03-25 09:29:31,973 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78781 conditions, 13624 events. 5548/13624 cut-off events. For 146425/149163 co-relation queries the response was YES. Maximal size of possible extension queue 725. Compared 145612 event pairs, 918 based on Foata normal form. 1082/14189 useless extension candidates. Maximal degree in co-relation 78378. Up to 2760 conditions per place. [2021-03-25 09:29:32,016 INFO L132 encePairwiseOnDemand]: 110/172 looper letters, 327 selfloop transitions, 359 changer transitions 0/737 dead transitions. [2021-03-25 09:29:32,017 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 737 transitions, 11423 flow [2021-03-25 09:29:32,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-25 09:29:32,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-03-25 09:29:32,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 842 transitions. [2021-03-25 09:29:32,020 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3263565891472868 [2021-03-25 09:29:32,020 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 842 transitions. [2021-03-25 09:29:32,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 842 transitions. [2021-03-25 09:29:32,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:29:32,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 842 transitions. [2021-03-25 09:29:32,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 56.13333333333333) internal successors, (842), 15 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:29:32,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 172.0) internal successors, (2752), 16 states have internal predecessors, (2752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:29:32,025 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 172.0) internal successors, (2752), 16 states have internal predecessors, (2752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:29:32,025 INFO L185 Difference]: Start difference. First operand has 170 places, 514 transitions, 7265 flow. Second operand 15 states and 842 transitions. [2021-03-25 09:29:32,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 737 transitions, 11423 flow [2021-03-25 09:29:32,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 737 transitions, 11274 flow, removed 74 selfloop flow, removed 2 redundant places. [2021-03-25 09:29:32,558 INFO L241 Difference]: Finished difference. Result has 194 places, 616 transitions, 10096 flow [2021-03-25 09:29:32,559 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=6815, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=10096, PETRI_PLACES=194, PETRI_TRANSITIONS=616} [2021-03-25 09:29:32,559 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 140 predicate places. [2021-03-25 09:29:32,559 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:29:32,559 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 194 places, 616 transitions, 10096 flow [2021-03-25 09:29:32,559 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 194 places, 616 transitions, 10096 flow [2021-03-25 09:29:32,564 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 194 places, 616 transitions, 10096 flow [2021-03-25 09:29:33,638 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([148] L34-->thread1EXIT: Formula: (= v_n1_15 0) InVars {} OutVars{n1=v_n1_15} AuxVars[] AssignedVars[n1][49], [9#L62true, 10#thread1EXITtrue, Black: 133#(and (<= n1 n3) (<= 1 n1) (<= n2 0)), Black: 122#(and (<= n1 n3) (<= 0 n1) (<= n2 0)), Black: 124#(and (<= 1 n1) (<= 0 n3) (<= n2 0)), Black: 125#(and (<= 1 n3) (<= 1 n1) (<= n2 0)), Black: 141#(and (<= n1 n2) (not (= n1 0)) (or (<= n1 0) (= n2 n1)) (< n3 n1)), Black: 256#(and (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 258#(and (<= n1 n3) (<= 1 n1) (<= n2 n1)), Black: 260#(and (<= 1 n1) (<= 0 n3)), Black: 262#(and (<= 1 n1) (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3)), Black: 264#(and (or (<= 1 n3) (<= 1 n2)) (<= 1 n1) (<= 0 n3)), Black: 268#(and (<= 1 n1) (<= 0 n3) (or (and (<= 1 n3) (< n3 n1)) (<= 2 n2))), Black: 270#(and (or (<= 1 n3) (<= 1 n2)) (<= 1 n1) (<= 0 n3) (<= n2 n1)), Black: 154#e3, Black: 272#(and (<= 0 n3) (<= n2 n1) (or (and (<= 1 n3) (< n3 n1)) (and (< n2 n1) (<= 2 n2)))), 157#true, Black: 243#(and (<= n1 n3) (<= 0 n1) (<= n2 n1)), 32#L77true, Black: 244#(and (<= 0 n1) (<= 0 n3) (<= n2 n1)), Black: 276#(and (<= 1 n3) (<= n2 n1) (< n3 n1)), Black: 254#(and (<= 1 n1) (<= 0 n3) (<= n2 n1)), 292#true, 40#thread2EXITtrue, Black: 160#(and (<= 0 n1) (<= n2 n1)), Black: 161#(and (<= 1 n1) (<= (+ n2 1) n1)), Black: 162#(and (<= 1 n1) (= n2 n1)), Black: 168#(and (<= 1 n1) (<= (+ n2 1) n1) (<= n3 n1)), Black: 170#(and (<= 1 n1) (<= n3 n1) (= n2 n1)), Black: 172#(and (<= n1 n2) (<= 1 n1) (<= 2 n2)), Black: 159#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), 181#true, Black: 294#(and (<= n1 n3) (<= 0 n3) (<= n2 n1) (<= n3 n1)), Black: 295#(and (<= n1 n3) (<= 0 n3) (<= n3 n1)), Black: 296#(and (<= n1 n3) (<= 0 n1)), Black: 298#(and (<= 0 n1) (or (<= n1 n3) (<= 1 n2))), 67#true, Black: 299#(and (<= 1 n1) (or (<= n1 (+ n3 1)) (<= 1 n2))), Black: 300#(and (<= 1 n1) (or (<= n1 n3) (<= 1 n2))), Black: 305#(and (<= n1 n3) (<= 1 n1)), Black: 307#(and (<= 1 n1) (<= 1 n2)), Black: 192#(and (<= 2 i) (<= i1 1) (<= i 2) (<= 1 i1)), Black: 196#(and (<= 2 i2) (<= i2 2) (<= i1 1) (< 2 i) (<= i 3) (<= 1 i1)), Black: 309#(and (<= n1 n3) (<= 1 n1) (<= 1 n2)), Black: 311#(and (<= 1 n1) (<= 2 n2)), Black: 184#(and (<= 1 i) (<= i 1)), Black: 185#(and (<= i1 1) (<= 1 i1)), Black: 313#(and (<= n1 n3) (<= 1 n1) (<= 2 n2)), Black: 315#(and (<= n1 n3) (< n2 n1) (<= 2 n2)), Black: 186#(and (<= 2 i) (<= i 2)), 203#true, Black: 317#(and (< n2 n1) (<= 2 n2)), Black: 208#(and (<= 1 n3) (<= n3 (+ n2 1))), Black: 209#(and (<= 1 n3) (<= n3 n2)), Black: 210#(and (<= 1 n3) (<= n3 n2) (not (= n3 n2))), Black: 212#(and (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 83#(and (<= 1 i2) (<= i3 0) (<= 2 i) (<= i 2) (<= i2 1) (<= 0 i3)), Black: 69#(and (<= i 0) (<= 0 i)), Black: 214#(and (<= n1 n3) (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 205#(and (<= n1 n3) (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 206#(and (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 79#(and (<= i3 0) (<= 1 i) (<= i 1) (<= 0 i3)), 95#true, Black: 207#(and (<= n3 n2) (<= 0 n3)), 224#true, Black: 97#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), Black: 98#(and (<= (+ n3 1) n1) (<= 1 n1) (<= (+ n2 1) n1)), Black: 99#(and (<= (+ n3 1) n1) (<= 1 n1) (= n2 n1)), Black: 227#(and (<= 0 n3) (<= n2 n3) (<= n3 n1)), Black: 228#(and (<= 0 n3) (<= n3 n1)), Black: 103#(and (<= n1 n2) (<= 1 n1) (<= n2 n1) (<= n3 n1)), Black: 229#(and (<= (+ n3 1) n1) (<= 0 n3)), Black: 230#(and (<= 1 n3) (not (= n3 n1)) (< n3 (+ n1 1))), Black: 232#(and (<= (+ n3 1) n1) (<= 0 n3) (<= n2 n3)), Black: 112#e2, 245#(and (<= 0 n1) (<= 0 n3)), Black: 117#e1, 120#true]) [2021-03-25 09:29:33,639 INFO L384 tUnfolder$Statistics]: this new event has 28 ancestors and is cut-off event [2021-03-25 09:29:33,639 INFO L387 tUnfolder$Statistics]: existing Event has 28 ancestors and is cut-off event [2021-03-25 09:29:33,639 INFO L387 tUnfolder$Statistics]: existing Event has 26 ancestors and is cut-off event [2021-03-25 09:29:33,639 INFO L387 tUnfolder$Statistics]: existing Event has 27 ancestors and is cut-off event [2021-03-25 09:29:33,919 INFO L129 PetriNetUnfolder]: 3416/10098 cut-off events. [2021-03-25 09:29:33,920 INFO L130 PetriNetUnfolder]: For 120550/122505 co-relation queries the response was YES. [2021-03-25 09:29:34,001 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58555 conditions, 10098 events. 3416/10098 cut-off events. For 120550/122505 co-relation queries the response was YES. Maximal size of possible extension queue 678. Compared 115418 event pairs, 687 based on Foata normal form. 412/9899 useless extension candidates. Maximal degree in co-relation 58124. Up to 2276 conditions per place. [2021-03-25 09:29:34,112 INFO L142 LiptonReduction]: Number of co-enabled transitions 5970 [2021-03-25 09:29:53,895 INFO L154 LiptonReduction]: Checked pairs total: 2896 [2021-03-25 09:29:53,895 INFO L156 LiptonReduction]: Total number of compositions: 26 [2021-03-25 09:29:53,896 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 21337 [2021-03-25 09:29:53,896 INFO L480 AbstractCegarLoop]: Abstraction has has 194 places, 616 transitions, 10131 flow [2021-03-25 09:29:53,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 40.583333333333336) internal successors, (487), 12 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:29:53,896 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:29:53,896 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] [2021-03-25 09:29:53,897 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-25 09:29:53,897 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:29:53,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:29:53,897 INFO L82 PathProgramCache]: Analyzing trace with hash -2030816368, now seen corresponding path program 3 times [2021-03-25 09:29:53,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:29:53,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213069418] [2021-03-25 09:29:53,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:29:53,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:29:53,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:29:53,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 09:29:53,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:29:53,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:29:53,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:29:53,938 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:29:53,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:29:53,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:29:53,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:29:53,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 09:29:53,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:29:53,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 09:29:53,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:29:53,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 09:29:53,975 INFO L142 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-03-25 09:29:53,975 INFO L147 QuantifierPusher]: treesize reduction 3, result has 84.2 percent of original size 16 [2021-03-25 09:29:53,997 INFO L142 QuantifierPusher]: treesize reduction 8, result has 66.7 percent of original size [2021-03-25 09:29:53,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 09:29:54,011 INFO L142 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-03-25 09:29:54,011 INFO L147 QuantifierPusher]: treesize reduction 3, result has 84.2 percent of original size 16 [2021-03-25 09:29:54,031 INFO L142 QuantifierPusher]: treesize reduction 8, result has 50.0 percent of original size [2021-03-25 09:29:54,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-25 09:29:54,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:29:54,040 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:29:54,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:29:54,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213069418] [2021-03-25 09:29:54,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:29:54,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-03-25 09:29:54,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545522611] [2021-03-25 09:29:54,041 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-25 09:29:54,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:29:54,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-25 09:29:54,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-03-25 09:29:54,042 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 198 [2021-03-25 09:29:54,043 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 616 transitions, 10131 flow. Second operand has 12 states, 12 states have (on average 40.583333333333336) internal successors, (487), 12 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:29:54,043 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:29:54,043 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 198 [2021-03-25 09:29:54,043 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:29:59,222 INFO L129 PetriNetUnfolder]: 7078/17253 cut-off events. [2021-03-25 09:29:59,222 INFO L130 PetriNetUnfolder]: For 251124/254649 co-relation queries the response was YES. [2021-03-25 09:29:59,342 INFO L84 FinitePrefix]: Finished finitePrefix Result has 111308 conditions, 17253 events. 7078/17253 cut-off events. For 251124/254649 co-relation queries the response was YES. Maximal size of possible extension queue 1046. Compared 191027 event pairs, 1052 based on Foata normal form. 1267/17868 useless extension candidates. Maximal degree in co-relation 110886. Up to 3670 conditions per place. [2021-03-25 09:29:59,405 INFO L132 encePairwiseOnDemand]: 111/198 looper letters, 340 selfloop transitions, 480 changer transitions 3/874 dead transitions. [2021-03-25 09:29:59,405 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 874 transitions, 15441 flow [2021-03-25 09:29:59,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-03-25 09:29:59,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-03-25 09:29:59,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1210 transitions. [2021-03-25 09:29:59,409 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.26570048309178745 [2021-03-25 09:29:59,409 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1210 transitions. [2021-03-25 09:29:59,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1210 transitions. [2021-03-25 09:29:59,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:29:59,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1210 transitions. [2021-03-25 09:29:59,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 52.608695652173914) internal successors, (1210), 23 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:29:59,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 198.0) internal successors, (4752), 24 states have internal predecessors, (4752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:29:59,417 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 198.0) internal successors, (4752), 24 states have internal predecessors, (4752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:29:59,417 INFO L185 Difference]: Start difference. First operand has 194 places, 616 transitions, 10131 flow. Second operand 23 states and 1210 transitions. [2021-03-25 09:29:59,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 874 transitions, 15441 flow [2021-03-25 09:30:00,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 874 transitions, 15225 flow, removed 108 selfloop flow, removed 0 redundant places. [2021-03-25 09:30:00,438 INFO L241 Difference]: Finished difference. Result has 224 places, 718 transitions, 12828 flow [2021-03-25 09:30:00,439 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=198, PETRI_DIFFERENCE_MINUEND_FLOW=9738, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=383, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=12828, PETRI_PLACES=224, PETRI_TRANSITIONS=718} [2021-03-25 09:30:00,439 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 170 predicate places. [2021-03-25 09:30:00,439 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:30:00,439 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 224 places, 718 transitions, 12828 flow [2021-03-25 09:30:00,439 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 224 places, 718 transitions, 12828 flow [2021-03-25 09:30:00,445 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 224 places, 718 transitions, 12828 flow [2021-03-25 09:30:02,100 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([134] L65-->L66: Formula: (or (= v_n2_14 0) (and (not (< v_n2_14 v_n3_13)) (not (= v_n2_14 v_n3_13)))) InVars {n2=v_n2_14, n3=v_n3_13} OutVars{n2=v_n2_14, n3=v_n3_13} AuxVars[] AssignedVars[][161], [Black: 377#(and (or (and (<= 1 n3) (< n3 n1)) (<= n1 n2)) (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 363#(and (<= 1 n1) (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3)), Black: 379#(and (<= n1 n2) (<= 0 n3) (<= n2 n1) (<= 2 n2)), Black: 365#(and (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 349#(and (<= n1 n2) (<= 0 n3) (<= n2 n1) (<= 1 n2)), Black: 367#(and (<= 1 n1) (<= 0 n3) (or (and (<= 1 n3) (< n3 n1)) (<= 2 n2))), 10#thread1EXITtrue, 17#L66true, Black: 133#(and (<= n1 n3) (<= 1 n1) (<= n2 0)), Black: 122#(and (<= n1 n3) (<= 0 n1) (<= n2 0)), Black: 124#(and (<= 1 n1) (<= 0 n3) (<= n2 0)), Black: 125#(and (<= 1 n3) (<= 1 n1) (<= n2 0)), Black: 141#(and (<= n1 n2) (not (= n1 0)) (or (<= n1 0) (= n2 n1)) (< n3 n1)), Black: 256#(and (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 258#(and (<= n1 n3) (<= 1 n1) (<= n2 n1)), Black: 260#(and (<= 1 n1) (<= 0 n3)), Black: 262#(and (<= 1 n1) (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3)), Black: 264#(and (or (<= 1 n3) (<= 1 n2)) (<= 1 n1) (<= 0 n3)), Black: 268#(and (<= 1 n1) (<= 0 n3) (or (and (<= 1 n3) (< n3 n1)) (<= 2 n2))), Black: 154#e3, Black: 270#(and (or (<= 1 n3) (<= 1 n2)) (<= 1 n1) (<= 0 n3) (<= n2 n1)), 157#true, Black: 272#(and (<= 0 n3) (<= n2 n1) (or (and (<= 1 n3) (< n3 n1)) (and (< n2 n1) (<= 2 n2)))), Black: 243#(and (<= n1 n3) (<= 0 n1) (<= n2 n1)), 32#L77true, Black: 244#(and (<= 0 n1) (<= 0 n3) (<= n2 n1)), Black: 276#(and (<= 1 n3) (<= n2 n1) (< n3 n1)), Black: 254#(and (<= 1 n1) (<= 0 n3) (<= n2 n1)), 298#(and (<= 0 n1) (or (<= n1 n3) (<= 1 n2))), 44#L49true, Black: 160#(and (<= 0 n1) (<= n2 n1)), Black: 161#(and (<= 1 n1) (<= (+ n2 1) n1)), Black: 162#(and (<= 1 n1) (= n2 n1)), Black: 168#(and (<= 1 n1) (<= (+ n2 1) n1) (<= n3 n1)), Black: 170#(and (<= 1 n1) (<= n3 n1) (= n2 n1)), Black: 172#(and (<= n1 n2) (<= 1 n1) (<= 2 n2)), Black: 159#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), 181#true, Black: 294#(and (<= n1 n3) (<= 0 n3) (<= n2 n1) (<= n3 n1)), Black: 295#(and (<= n1 n3) (<= 0 n3) (<= n3 n1)), Black: 296#(and (<= n1 n3) (<= 0 n1)), 67#true, Black: 299#(and (<= 1 n1) (or (<= n1 (+ n3 1)) (<= 1 n2))), Black: 300#(and (<= 1 n1) (or (<= n1 n3) (<= 1 n2))), Black: 305#(and (<= n1 n3) (<= 1 n1)), Black: 307#(and (<= 1 n1) (<= 1 n2)), Black: 192#(and (<= 2 i) (<= i1 1) (<= i 2) (<= 1 i1)), Black: 196#(and (<= 2 i2) (<= i2 2) (<= i1 1) (< 2 i) (<= i 3) (<= 1 i1)), Black: 309#(and (<= n1 n3) (<= 1 n1) (<= 1 n2)), Black: 311#(and (<= 1 n1) (<= 2 n2)), Black: 184#(and (<= 1 i) (<= i 1)), Black: 185#(and (<= i1 1) (<= 1 i1)), Black: 313#(and (<= n1 n3) (<= 1 n1) (<= 2 n2)), Black: 186#(and (<= 2 i) (<= i 2)), Black: 315#(and (<= n1 n3) (< n2 n1) (<= 2 n2)), 203#true, Black: 317#(and (< n2 n1) (<= 2 n2)), 336#(and (<= 0 n1) (<= 0 n3)), Black: 208#(and (<= 1 n3) (<= n3 (+ n2 1))), Black: 209#(and (<= 1 n3) (<= n3 n2)), Black: 210#(and (<= 1 n3) (<= n3 n2) (not (= n3 n2))), Black: 212#(and (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 83#(and (<= 1 i2) (<= i3 0) (<= 2 i) (<= i 2) (<= i2 1) (<= 0 i3)), Black: 214#(and (<= n1 n3) (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 69#(and (<= i 0) (<= 0 i)), Black: 205#(and (<= n1 n3) (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 79#(and (<= i3 0) (<= 1 i) (<= i 1) (<= 0 i3)), Black: 206#(and (<= n3 n2) (<= 0 n3) (<= n2 n3)), 95#true, Black: 207#(and (<= n3 n2) (<= 0 n3)), 224#true, Black: 97#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), Black: 98#(and (<= (+ n3 1) n1) (<= 1 n1) (<= (+ n2 1) n1)), Black: 99#(and (<= (+ n3 1) n1) (<= 1 n1) (= n2 n1)), Black: 227#(and (<= 0 n3) (<= n2 n3) (<= n3 n1)), Black: 103#(and (<= n1 n2) (<= 1 n1) (<= n2 n1) (<= n3 n1)), Black: 228#(and (<= 0 n3) (<= n3 n1)), Black: 229#(and (<= (+ n3 1) n1) (<= 0 n3)), Black: 230#(and (<= 1 n3) (not (= n3 n1)) (< n3 (+ n1 1))), Black: 232#(and (<= (+ n3 1) n1) (<= 0 n3) (<= n2 n3)), Black: 112#e2, 245#(and (<= 0 n1) (<= 0 n3)), Black: 117#e1, 120#true, Black: 371#(and (or (and (<= 1 n3) (< n3 n1)) (<= n1 n2)) (<= 1 n1) (<= 0 n3) (or (and (<= 1 n3) (< n3 n1)) (<= 2 n2))), Black: 373#(and (or (and (<= 1 n3) (< n3 n1)) (<= n1 n2)) (<= 1 n1) (<= 0 n3)), Black: 375#(and (or (and (<= 1 n3) (< n3 n1)) (<= n1 n2)) (<= 0 n3) (<= n2 n1) (or (and (<= 1 n3) (< n3 n1)) (<= 2 n2)))]) [2021-03-25 09:30:02,100 INFO L384 tUnfolder$Statistics]: this new event has 27 ancestors and is not cut-off event [2021-03-25 09:30:02,100 INFO L387 tUnfolder$Statistics]: existing Event has 28 ancestors and is not cut-off event [2021-03-25 09:30:02,100 INFO L387 tUnfolder$Statistics]: existing Event has 27 ancestors and is not cut-off event [2021-03-25 09:30:02,100 INFO L387 tUnfolder$Statistics]: existing Event has 28 ancestors and is not cut-off event [2021-03-25 09:30:02,573 INFO L129 PetriNetUnfolder]: 5070/13924 cut-off events. [2021-03-25 09:30:02,574 INFO L130 PetriNetUnfolder]: For 202507/205739 co-relation queries the response was YES. [2021-03-25 09:30:02,696 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89036 conditions, 13924 events. 5070/13924 cut-off events. For 202507/205739 co-relation queries the response was YES. Maximal size of possible extension queue 1053. Compared 162995 event pairs, 958 based on Foata normal form. 612/13763 useless extension candidates. Maximal degree in co-relation 88538. Up to 3239 conditions per place. [2021-03-25 09:30:02,840 INFO L142 LiptonReduction]: Number of co-enabled transitions 7492 [2021-03-25 09:30:03,609 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2021-03-25 09:30:28,274 INFO L154 LiptonReduction]: Checked pairs total: 877 [2021-03-25 09:30:28,274 INFO L156 LiptonReduction]: Total number of compositions: 8 [2021-03-25 09:30:28,274 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 27835 [2021-03-25 09:30:28,275 INFO L480 AbstractCegarLoop]: Abstraction has has 224 places, 718 transitions, 12839 flow [2021-03-25 09:30:28,275 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 40.583333333333336) internal successors, (487), 12 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:30:28,275 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:30:28,275 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] [2021-03-25 09:30:28,275 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-25 09:30:28,275 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:30:28,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:30:28,276 INFO L82 PathProgramCache]: Analyzing trace with hash -799207358, now seen corresponding path program 4 times [2021-03-25 09:30:28,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:30:28,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223303452] [2021-03-25 09:30:28,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:30:28,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:30:28,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:30:28,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-25 09:30:28,330 INFO L142 QuantifierPusher]: treesize reduction 11, result has 66.7 percent of original size [2021-03-25 09:30:28,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 09:30:28,334 INFO L142 QuantifierPusher]: treesize reduction 17, result has 52.8 percent of original size [2021-03-25 09:30:28,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 09:30:28,338 INFO L142 QuantifierPusher]: treesize reduction 17, result has 52.8 percent of original size [2021-03-25 09:30:28,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 09:30:28,341 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-03-25 09:30:28,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:30:28,348 INFO L142 QuantifierPusher]: treesize reduction 24, result has 29.4 percent of original size [2021-03-25 09:30:28,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:30:28,350 INFO L142 QuantifierPusher]: treesize reduction 6, result has 53.8 percent of original size [2021-03-25 09:30:28,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:30:28,356 INFO L142 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size [2021-03-25 09:30:28,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 09:30:28,364 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 09:30:28,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:30:28,371 INFO L142 QuantifierPusher]: treesize reduction 8, result has 50.0 percent of original size [2021-03-25 09:30:28,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-25 09:30:28,380 INFO L142 QuantifierPusher]: treesize reduction 8, result has 50.0 percent of original size [2021-03-25 09:30:28,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-25 09:30:28,381 INFO L142 QuantifierPusher]: treesize reduction 8, result has 50.0 percent of original size [2021-03-25 09:30:28,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-25 09:30:28,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:30:28,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:30:28,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:30:28,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223303452] [2021-03-25 09:30:28,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:30:28,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 09:30:28,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268882772] [2021-03-25 09:30:28,391 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 09:30:28,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:30:28,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 09:30:28,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-03-25 09:30:28,393 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 206 [2021-03-25 09:30:28,393 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 718 transitions, 12839 flow. Second operand has 9 states, 9 states have (on average 41.111111111111114) internal successors, (370), 9 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:30:28,393 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:30:28,393 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 206 [2021-03-25 09:30:28,393 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:30:32,423 INFO L129 PetriNetUnfolder]: 5910/14701 cut-off events. [2021-03-25 09:30:32,423 INFO L130 PetriNetUnfolder]: For 267553/271301 co-relation queries the response was YES. [2021-03-25 09:30:32,594 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103282 conditions, 14701 events. 5910/14701 cut-off events. For 267553/271301 co-relation queries the response was YES. Maximal size of possible extension queue 754. Compared 159503 event pairs, 1639 based on Foata normal form. 737/14889 useless extension candidates. Maximal degree in co-relation 102691. Up to 6076 conditions per place. [2021-03-25 09:30:32,781 INFO L132 encePairwiseOnDemand]: 165/206 looper letters, 477 selfloop transitions, 220 changer transitions 2/750 dead transitions. [2021-03-25 09:30:32,782 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 750 transitions, 14139 flow [2021-03-25 09:30:32,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-25 09:30:32,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-25 09:30:32,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 542 transitions. [2021-03-25 09:30:32,793 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2923408845738943 [2021-03-25 09:30:32,793 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 542 transitions. [2021-03-25 09:30:32,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 542 transitions. [2021-03-25 09:30:32,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:30:32,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 542 transitions. [2021-03-25 09:30:32,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 60.22222222222222) internal successors, (542), 9 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:30:32,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 206.0) internal successors, (2060), 10 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:30:32,797 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 206.0) internal successors, (2060), 10 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:30:32,797 INFO L185 Difference]: Start difference. First operand has 224 places, 718 transitions, 12839 flow. Second operand 9 states and 542 transitions. [2021-03-25 09:30:32,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 750 transitions, 14139 flow [2021-03-25 09:30:33,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 750 transitions, 13462 flow, removed 170 selfloop flow, removed 6 redundant places. [2021-03-25 09:30:33,738 INFO L241 Difference]: Finished difference. Result has 228 places, 645 transitions, 11639 flow [2021-03-25 09:30:33,738 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=9506, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11639, PETRI_PLACES=228, PETRI_TRANSITIONS=645} [2021-03-25 09:30:33,739 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 174 predicate places. [2021-03-25 09:30:33,739 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:30:33,739 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 228 places, 645 transitions, 11639 flow [2021-03-25 09:30:33,739 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 228 places, 645 transitions, 11639 flow [2021-03-25 09:30:33,744 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 228 places, 645 transitions, 11639 flow [2021-03-25 09:30:34,850 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([108] L31-->L32: Formula: (or (not (< v_n3_2 v_n1_8)) (= v_n3_2 0)) InVars {n3=v_n3_2, n1=v_n1_8} OutVars{n3=v_n3_2, n1=v_n1_8} AuxVars[] AssignedVars[][269], [Black: 377#(and (or (and (<= 1 n3) (< n3 n1)) (<= n1 n2)) (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 363#(and (<= 1 n1) (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3)), Black: 365#(and (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 349#(and (<= n1 n2) (<= 0 n3) (<= n2 n1) (<= 1 n2)), Black: 367#(and (<= 1 n1) (<= 0 n3) (or (and (<= 1 n3) (< n3 n1)) (<= 2 n2))), 390#true, 17#L66true, Black: 133#(and (<= n1 n3) (<= 1 n1) (<= n2 0)), Black: 122#(and (<= n1 n3) (<= 0 n1) (<= n2 0)), Black: 400#(and (<= n1 n2) (<= n1 (+ n3 1)) (<= 1 n1)), Black: 124#(and (<= 1 n1) (<= 0 n3) (<= n2 0)), Black: 125#(and (<= 1 n3) (<= 1 n1) (<= n2 0)), Black: 402#(and (<= n1 n3) (<= n1 n2) (<= 1 n1)), Black: 394#(and (<= n1 n3) (<= 0 n1)), Black: 141#(and (<= n1 n2) (not (= n1 0)) (or (<= n1 0) (= n2 n1)) (< n3 n1)), Black: 256#(and (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 395#(and (<= n1 (+ n3 1)) (<= 1 n1)), Black: 258#(and (<= n1 n3) (<= 1 n1) (<= n2 n1)), Black: 260#(and (<= 1 n1) (<= 0 n3)), Black: 396#(and (<= n1 n3) (<= 1 n1)), Black: 398#(and (<= n1 n2) (not (= n1 0))), Black: 262#(and (<= 1 n1) (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3)), Black: 264#(and (or (<= 1 n3) (<= 1 n2)) (<= 1 n1) (<= 0 n3)), Black: 268#(and (<= 1 n1) (<= 0 n3) (or (and (<= 1 n3) (< n3 n1)) (<= 2 n2))), Black: 154#e3, Black: 270#(and (or (<= 1 n3) (<= 1 n2)) (<= 1 n1) (<= 0 n3) (<= n2 n1)), 157#true, Black: 272#(and (<= 0 n3) (<= n2 n1) (or (and (<= 1 n3) (< n3 n1)) (and (< n2 n1) (<= 2 n2)))), Black: 243#(and (<= n1 n3) (<= 0 n1) (<= n2 n1)), 32#L77true, Black: 244#(and (<= 0 n1) (<= 0 n3) (<= n2 n1)), Black: 276#(and (<= 1 n3) (<= n2 n1) (< n3 n1)), Black: 245#(and (<= 0 n1) (<= 0 n3)), 292#true, 40#thread2EXITtrue, Black: 160#(and (<= 0 n1) (<= n2 n1)), Black: 161#(and (<= 1 n1) (<= (+ n2 1) n1)), Black: 162#(and (<= 1 n1) (= n2 n1)), Black: 170#(and (<= 1 n1) (<= n3 n1) (= n2 n1)), Black: 172#(and (<= n1 n2) (<= 1 n1) (<= 2 n2)), Black: 159#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), 181#true, 55#L32true, Black: 294#(and (<= n1 n3) (<= 0 n3) (<= n2 n1) (<= n3 n1)), Black: 295#(and (<= n1 n3) (<= 0 n3) (<= n3 n1)), Black: 296#(and (<= n1 n3) (<= 0 n1)), Black: 298#(and (<= 0 n1) (or (<= n1 n3) (<= 1 n2))), 67#true, Black: 299#(and (<= 1 n1) (or (<= n1 (+ n3 1)) (<= 1 n2))), Black: 300#(and (<= 1 n1) (or (<= n1 n3) (<= 1 n2))), Black: 305#(and (<= n1 n3) (<= 1 n1)), Black: 307#(and (<= 1 n1) (<= 1 n2)), Black: 192#(and (<= 2 i) (<= i1 1) (<= i 2) (<= 1 i1)), Black: 196#(and (<= 2 i2) (<= i2 2) (<= i1 1) (< 2 i) (<= i 3) (<= 1 i1)), Black: 309#(and (<= n1 n3) (<= 1 n1) (<= 1 n2)), Black: 184#(and (<= 1 i) (<= i 1)), Black: 311#(and (<= 1 n1) (<= 2 n2)), Black: 185#(and (<= i1 1) (<= 1 i1)), Black: 313#(and (<= n1 n3) (<= 1 n1) (<= 2 n2)), Black: 186#(and (<= 2 i) (<= i 2)), Black: 315#(and (<= n1 n3) (< n2 n1) (<= 2 n2)), 203#true, Black: 208#(and (<= 1 n3) (<= n3 (+ n2 1))), Black: 209#(and (<= 1 n3) (<= n3 n2)), 345#(and (<= 1 n1) (<= 0 n3) (<= n2 n1)), Black: 210#(and (<= 1 n3) (<= n3 n2) (not (= n3 n2))), Black: 212#(and (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 83#(and (<= 1 i2) (<= i3 0) (<= 2 i) (<= i 2) (<= i2 1) (<= 0 i3)), Black: 69#(and (<= i 0) (<= 0 i)), Black: 214#(and (<= n1 n3) (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 205#(and (<= n1 n3) (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 206#(and (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 79#(and (<= i3 0) (<= 1 i) (<= i 1) (<= 0 i3)), 95#true, Black: 207#(and (<= n3 n2) (<= 0 n3)), 224#true, Black: 97#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), Black: 98#(and (<= (+ n3 1) n1) (<= 1 n1) (<= (+ n2 1) n1)), Black: 99#(and (<= (+ n3 1) n1) (<= 1 n1) (= n2 n1)), Black: 227#(and (<= 0 n3) (<= n2 n3) (<= n3 n1)), Black: 228#(and (<= 0 n3) (<= n3 n1)), Black: 103#(and (<= n1 n2) (<= 1 n1) (<= n2 n1) (<= n3 n1)), Black: 229#(and (<= (+ n3 1) n1) (<= 0 n3)), Black: 230#(and (<= 1 n3) (not (= n3 n1)) (< n3 (+ n1 1))), Black: 232#(and (<= (+ n3 1) n1) (<= 0 n3) (<= n2 n3)), Black: 112#e2, Black: 117#e1, 120#true, Black: 371#(and (or (and (<= 1 n3) (< n3 n1)) (<= n1 n2)) (<= 1 n1) (<= 0 n3) (or (and (<= 1 n3) (< n3 n1)) (<= 2 n2))), Black: 373#(and (or (and (<= 1 n3) (< n3 n1)) (<= n1 n2)) (<= 1 n1) (<= 0 n3)), 254#(and (<= 1 n1) (<= 0 n3) (<= n2 n1)), Black: 375#(and (or (and (<= 1 n3) (< n3 n1)) (<= n1 n2)) (<= 0 n3) (<= n2 n1) (or (and (<= 1 n3) (< n3 n1)) (<= 2 n2)))]) [2021-03-25 09:30:34,850 INFO L384 tUnfolder$Statistics]: this new event has 27 ancestors and is cut-off event [2021-03-25 09:30:34,850 INFO L387 tUnfolder$Statistics]: existing Event has 27 ancestors and is cut-off event [2021-03-25 09:30:34,850 INFO L387 tUnfolder$Statistics]: existing Event has 29 ancestors and is cut-off event [2021-03-25 09:30:34,850 INFO L387 tUnfolder$Statistics]: existing Event has 27 ancestors and is cut-off event [2021-03-25 09:30:35,470 INFO L129 PetriNetUnfolder]: 3958/11259 cut-off events. [2021-03-25 09:30:35,471 INFO L130 PetriNetUnfolder]: For 171507/174605 co-relation queries the response was YES. [2021-03-25 09:30:35,734 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68863 conditions, 11259 events. 3958/11259 cut-off events. For 171507/174605 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 128751 event pairs, 906 based on Foata normal form. 674/11292 useless extension candidates. Maximal degree in co-relation 68245. Up to 2184 conditions per place. [2021-03-25 09:30:35,880 INFO L142 LiptonReduction]: Number of co-enabled transitions 6630 [2021-03-25 09:30:55,399 INFO L154 LiptonReduction]: Checked pairs total: 465 [2021-03-25 09:30:55,399 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 09:30:55,400 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 21661 [2021-03-25 09:30:55,400 INFO L480 AbstractCegarLoop]: Abstraction has has 226 places, 643 transitions, 11631 flow [2021-03-25 09:30:55,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 41.111111111111114) internal successors, (370), 9 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:30:55,400 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:30:55,400 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] [2021-03-25 09:30:55,401 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-25 09:30:55,401 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:30:55,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:30:55,401 INFO L82 PathProgramCache]: Analyzing trace with hash 605449796, now seen corresponding path program 1 times [2021-03-25 09:30:55,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:30:55,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931390361] [2021-03-25 09:30:55,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:30:55,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:30:55,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:30:55,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 09:30:55,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:30:55,436 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 09:30:55,440 INFO L142 QuantifierPusher]: treesize reduction 19, result has 57.8 percent of original size [2021-03-25 09:30:55,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 09:30:55,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:30:55,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 09:30:55,453 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-03-25 09:30:55,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 09:30:55,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:30:55,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:30:55,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:30:55,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 09:30:55,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:30:55,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:30:55,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:30:55,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931390361] [2021-03-25 09:30:55,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:30:55,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 09:30:55,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867960369] [2021-03-25 09:30:55,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 09:30:55,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:30:55,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 09:30:55,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-25 09:30:55,489 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 211 [2021-03-25 09:30:55,490 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 643 transitions, 11631 flow. Second operand has 7 states, 7 states have (on average 41.714285714285715) internal successors, (292), 7 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:30:55,490 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:30:55,490 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 211 [2021-03-25 09:30:55,490 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:30:59,773 INFO L129 PetriNetUnfolder]: 5521/13942 cut-off events. [2021-03-25 09:30:59,773 INFO L130 PetriNetUnfolder]: For 259564/263624 co-relation queries the response was YES. [2021-03-25 09:31:00,069 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95751 conditions, 13942 events. 5521/13942 cut-off events. For 259564/263624 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 150828 event pairs, 1988 based on Foata normal form. 580/13955 useless extension candidates. Maximal degree in co-relation 95208. Up to 8258 conditions per place. [2021-03-25 09:31:00,122 INFO L132 encePairwiseOnDemand]: 193/211 looper letters, 589 selfloop transitions, 74 changer transitions 0/714 dead transitions. [2021-03-25 09:31:00,122 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 714 transitions, 13885 flow [2021-03-25 09:31:00,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 09:31:00,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 09:31:00,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 480 transitions. [2021-03-25 09:31:00,124 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2843601895734597 [2021-03-25 09:31:00,124 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 480 transitions. [2021-03-25 09:31:00,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 480 transitions. [2021-03-25 09:31:00,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:31:00,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 480 transitions. [2021-03-25 09:31:00,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 60.0) internal successors, (480), 8 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:31:00,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 211.0) internal successors, (1899), 9 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:31:00,127 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 211.0) internal successors, (1899), 9 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:31:00,127 INFO L185 Difference]: Start difference. First operand has 226 places, 643 transitions, 11631 flow. Second operand 8 states and 480 transitions. [2021-03-25 09:31:00,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 714 transitions, 13885 flow [2021-03-25 09:31:00,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 714 transitions, 13761 flow, removed 52 selfloop flow, removed 2 redundant places. [2021-03-25 09:31:00,977 INFO L241 Difference]: Finished difference. Result has 237 places, 672 transitions, 12239 flow [2021-03-25 09:31:00,978 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=11199, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=569, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12239, PETRI_PLACES=237, PETRI_TRANSITIONS=672} [2021-03-25 09:31:00,978 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 183 predicate places. [2021-03-25 09:31:00,978 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:31:00,978 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 237 places, 672 transitions, 12239 flow [2021-03-25 09:31:00,979 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 237 places, 672 transitions, 12239 flow [2021-03-25 09:31:00,984 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 237 places, 672 transitions, 12239 flow [2021-03-25 09:31:02,772 INFO L129 PetriNetUnfolder]: 3608/10684 cut-off events. [2021-03-25 09:31:02,772 INFO L130 PetriNetUnfolder]: For 160390/163050 co-relation queries the response was YES. [2021-03-25 09:31:02,882 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65070 conditions, 10684 events. 3608/10684 cut-off events. For 160390/163050 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 122819 event pairs, 838 based on Foata normal form. 548/10619 useless extension candidates. Maximal degree in co-relation 64522. Up to 1910 conditions per place. [2021-03-25 09:31:02,998 INFO L142 LiptonReduction]: Number of co-enabled transitions 6374 [2021-03-25 09:31:17,748 INFO L154 LiptonReduction]: Checked pairs total: 687 [2021-03-25 09:31:17,749 INFO L156 LiptonReduction]: Total number of compositions: 6 [2021-03-25 09:31:17,749 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 16771 [2021-03-25 09:31:17,749 INFO L480 AbstractCegarLoop]: Abstraction has has 237 places, 672 transitions, 12249 flow [2021-03-25 09:31:17,749 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 41.714285714285715) internal successors, (292), 7 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:31:17,750 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:31:17,750 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] [2021-03-25 09:31:17,750 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-25 09:31:17,750 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:31:17,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:31:17,750 INFO L82 PathProgramCache]: Analyzing trace with hash 912585266, now seen corresponding path program 1 times [2021-03-25 09:31:17,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:31:17,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503080599] [2021-03-25 09:31:17,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:31:17,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:31:17,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:31:17,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:31:17,805 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:31:17,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:31:17,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:31:17,812 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:31:17,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:31:17,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:31:17,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:31:17,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:31:17,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:31:17,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:31:17,857 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 09:31:17,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:31:17,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:31:17,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503080599] [2021-03-25 09:31:17,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:31:17,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 09:31:17,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036350564] [2021-03-25 09:31:17,871 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 09:31:17,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:31:17,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 09:31:17,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-25 09:31:17,873 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 217 [2021-03-25 09:31:17,874 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 672 transitions, 12249 flow. Second operand has 9 states, 9 states have (on average 202.88888888888889) internal successors, (1826), 9 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:31:17,874 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:31:17,875 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 217 [2021-03-25 09:31:17,875 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:31:19,462 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([106] L29-->L30: Formula: (or (= v_n2_2 0) (not (< v_n2_2 v_n1_7))) InVars {n2=v_n2_2, n1=v_n1_7} OutVars{n2=v_n2_2, n1=v_n1_7} AuxVars[] AssignedVars[][17], [7#L30true, Black: 256#(and (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 258#(and (<= n1 n3) (<= 1 n1) (<= n2 n1)), Black: 260#(and (<= 1 n1) (<= 0 n3)), Black: 262#(and (<= 1 n1) (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3)), Black: 264#(and (or (<= 1 n3) (<= 1 n2)) (<= 1 n1) (<= 0 n3)), Black: 268#(and (<= 1 n1) (<= 0 n3) (or (and (<= 1 n3) (< n3 n1)) (<= 2 n2))), Black: 270#(and (or (<= 1 n3) (<= 1 n2)) (<= 1 n1) (<= 0 n3) (<= n2 n1)), Black: 272#(and (<= 0 n3) (<= n2 n1) (or (and (<= 1 n3) (< n3 n1)) (and (< n2 n1) (<= 2 n2)))), Black: 243#(and (<= n1 n3) (<= 0 n1) (<= n2 n1)), Black: 244#(and (<= 0 n1) (<= 0 n3) (<= n2 n1)), 32#L77true, Black: 276#(and (<= 1 n3) (<= n2 n1) (< n3 n1)), Black: 245#(and (<= 0 n1) (<= 0 n3)), 292#true, 38#L64true, 40#thread2EXITtrue, Black: 294#(and (<= n1 n3) (<= 0 n3) (<= n2 n1) (<= n3 n1)), Black: 295#(and (<= n1 n3) (<= 0 n3) (<= n3 n1)), Black: 296#(and (<= n1 n3) (<= 0 n1)), Black: 298#(and (<= 0 n1) (or (<= n1 n3) (<= 1 n2))), 67#true, Black: 299#(and (<= 1 n1) (or (<= n1 (+ n3 1)) (<= 1 n2))), Black: 300#(and (<= 1 n1) (or (<= n1 n3) (<= 1 n2))), Black: 305#(and (<= n1 n3) (<= 1 n1)), Black: 307#(and (<= 1 n1) (<= 1 n2)), Black: 309#(and (<= n1 n3) (<= 1 n1) (<= 1 n2)), Black: 311#(and (<= 1 n1) (<= 2 n2)), Black: 315#(and (<= n1 n3) (< n2 n1) (<= 2 n2)), 345#(and (<= 1 n1) (<= 0 n3) (<= n2 n1)), Black: 83#(and (<= 1 i2) (<= i3 0) (<= 2 i) (<= i 2) (<= i2 1) (<= 0 i3)), Black: 69#(and (<= i 0) (<= 0 i)), Black: 79#(and (<= i3 0) (<= 1 i) (<= i 1) (<= 0 i3)), 95#true, Black: 97#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), Black: 98#(and (<= (+ n3 1) n1) (<= 1 n1) (<= (+ n2 1) n1)), Black: 99#(and (<= (+ n3 1) n1) (<= 1 n1) (= n2 n1)), Black: 103#(and (<= n1 n2) (<= 1 n1) (<= n2 n1) (<= n3 n1)), Black: 112#e2, Black: 117#e1, 120#true, Black: 373#(and (or (and (<= 1 n3) (< n3 n1)) (<= n1 n2)) (<= 1 n1) (<= 0 n3)), Black: 375#(and (or (and (<= 1 n3) (< n3 n1)) (<= n1 n2)) (<= 0 n3) (<= n2 n1) (or (and (<= 1 n3) (< n3 n1)) (<= 2 n2))), Black: 377#(and (or (and (<= 1 n3) (< n3 n1)) (<= n1 n2)) (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 363#(and (<= 1 n1) (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3)), Black: 365#(and (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 349#(and (<= n1 n2) (<= 0 n3) (<= n2 n1) (<= 1 n2)), Black: 367#(and (<= 1 n1) (<= 0 n3) (or (and (<= 1 n3) (< n3 n1)) (<= 2 n2))), 390#true, Black: 133#(and (<= n1 n3) (<= 1 n1) (<= n2 0)), Black: 122#(and (<= n1 n3) (<= 0 n1) (<= n2 0)), Black: 400#(and (<= n1 n2) (<= n1 (+ n3 1)) (<= 1 n1)), Black: 124#(and (<= 1 n1) (<= 0 n3) (<= n2 0)), Black: 125#(and (<= 1 n3) (<= 1 n1) (<= n2 0)), Black: 402#(and (<= n1 n3) (<= n1 n2) (<= 1 n1)), Black: 141#(and (<= n1 n2) (not (= n1 0)) (or (<= n1 0) (= n2 n1)) (< n3 n1)), Black: 394#(and (<= n1 n3) (<= 0 n1)), Black: 395#(and (<= n1 (+ n3 1)) (<= 1 n1)), Black: 396#(and (<= n1 n3) (<= 1 n1)), Black: 398#(and (<= n1 n2) (not (= n1 0))), 410#true, Black: 154#e3, 157#true, Black: 416#(and (<= (+ n2 1) n1) (<= 1 n2)), Black: 418#(and (<= n1 n2) (<= n3 n2) (<= n2 n3) (<= n2 n1) (<= 1 n2)), Black: 412#(and (<= n1 n2) (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 413#(and (<= (+ n1 1) n2) (<= 1 n2) (<= (+ n3 1) n2)), Black: 414#(and (<= 1 n2) (<= (+ n3 1) n2) (= n2 n1)), Black: 415#(and (<= n2 n1) (<= 1 n2)), 426#true, Black: 160#(and (<= 0 n1) (<= n2 n1)), Black: 161#(and (<= 1 n1) (<= (+ n2 1) n1)), Black: 162#(and (<= 1 n1) (= n2 n1)), Black: 170#(and (<= 1 n1) (<= n3 n1) (= n2 n1)), Black: 172#(and (<= n1 n2) (<= 1 n1) (<= 2 n2)), Black: 159#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), 181#true, Black: 192#(and (<= 2 i) (<= i1 1) (<= i 2) (<= 1 i1)), Black: 196#(and (<= 2 i2) (<= i2 2) (<= i1 1) (< 2 i) (<= i 3) (<= 1 i1)), Black: 184#(and (<= 1 i) (<= i 1)), Black: 185#(and (<= i1 1) (<= 1 i1)), Black: 186#(and (<= 2 i) (<= i 2)), 203#true, Black: 208#(and (<= 1 n3) (<= n3 (+ n2 1))), Black: 209#(and (<= 1 n3) (<= n3 n2)), Black: 210#(and (<= 1 n3) (<= n3 n2) (not (= n3 n2))), Black: 212#(and (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 214#(and (<= n1 n3) (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 205#(and (<= n1 n3) (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 206#(and (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 207#(and (<= n3 n2) (<= 0 n3)), 224#true, Black: 227#(and (<= 0 n3) (<= n2 n3) (<= n3 n1)), Black: 228#(and (<= 0 n3) (<= n3 n1)), Black: 229#(and (<= (+ n3 1) n1) (<= 0 n3)), Black: 230#(and (<= 1 n3) (not (= n3 n1)) (< n3 (+ n1 1))), Black: 232#(and (<= (+ n3 1) n1) (<= 0 n3) (<= n2 n3)), 254#(and (<= 1 n1) (<= 0 n3) (<= n2 n1))]) [2021-03-25 09:31:19,462 INFO L384 tUnfolder$Statistics]: this new event has 25 ancestors and is cut-off event [2021-03-25 09:31:19,463 INFO L387 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2021-03-25 09:31:19,463 INFO L387 tUnfolder$Statistics]: existing Event has 25 ancestors and is cut-off event [2021-03-25 09:31:19,463 INFO L387 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2021-03-25 09:31:20,076 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([119] L46-->L47: Formula: (or (= v_n1_11 0) (and (not (< v_n1_11 v_n2_9)) (not (= v_n2_9 v_n1_11)))) InVars {n2=v_n2_9, n1=v_n1_11} OutVars{n2=v_n2_9, n1=v_n1_11} AuxVars[] AssignedVars[][32], [Black: 377#(and (or (and (<= 1 n3) (< n3 n1)) (<= n1 n2)) (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 363#(and (<= 1 n1) (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3)), Black: 365#(and (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 349#(and (<= n1 n2) (<= 0 n3) (<= n2 n1) (<= 1 n2)), Black: 367#(and (<= 1 n1) (<= 0 n3) (or (and (<= 1 n3) (< n3 n1)) (<= 2 n2))), 390#true, 10#thread1EXITtrue, Black: 133#(and (<= n1 n3) (<= 1 n1) (<= n2 0)), 18#L47true, Black: 122#(and (<= n1 n3) (<= 0 n1) (<= n2 0)), Black: 400#(and (<= n1 n2) (<= n1 (+ n3 1)) (<= 1 n1)), Black: 124#(and (<= 1 n1) (<= 0 n3) (<= n2 0)), Black: 125#(and (<= 1 n3) (<= 1 n1) (<= n2 0)), Black: 402#(and (<= n1 n3) (<= n1 n2) (<= 1 n1)), Black: 141#(and (<= n1 n2) (not (= n1 0)) (or (<= n1 0) (= n2 n1)) (< n3 n1)), Black: 256#(and (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 394#(and (<= n1 n3) (<= 0 n1)), Black: 258#(and (<= n1 n3) (<= 1 n1) (<= n2 n1)), Black: 395#(and (<= n1 (+ n3 1)) (<= 1 n1)), Black: 396#(and (<= n1 n3) (<= 1 n1)), Black: 260#(and (<= 1 n1) (<= 0 n3)), Black: 398#(and (<= n1 n2) (not (= n1 0))), Black: 262#(and (<= 1 n1) (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3)), 410#true, Black: 264#(and (or (<= 1 n3) (<= 1 n2)) (<= 1 n1) (<= 0 n3)), Black: 268#(and (<= 1 n1) (<= 0 n3) (or (and (<= 1 n3) (< n3 n1)) (<= 2 n2))), Black: 270#(and (or (<= 1 n3) (<= 1 n2)) (<= 1 n1) (<= 0 n3) (<= n2 n1)), Black: 154#e3, Black: 272#(and (<= 0 n3) (<= n2 n1) (or (and (<= 1 n3) (< n3 n1)) (and (< n2 n1) (<= 2 n2)))), 157#true, Black: 243#(and (<= n1 n3) (<= 0 n1) (<= n2 n1)), Black: 244#(and (<= 0 n1) (<= 0 n3) (<= n2 n1)), 32#L77true, Black: 276#(and (<= 1 n3) (<= n2 n1) (< n3 n1)), Black: 254#(and (<= 1 n1) (<= 0 n3) (<= n2 n1)), Black: 416#(and (<= (+ n2 1) n1) (<= 1 n2)), Black: 418#(and (<= n1 n2) (<= n3 n2) (<= n2 n3) (<= n2 n1) (<= 1 n2)), 38#L64true, Black: 412#(and (<= n1 n2) (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 413#(and (<= (+ n1 1) n2) (<= 1 n2) (<= (+ n3 1) n2)), Black: 414#(and (<= 1 n2) (<= (+ n3 1) n2) (= n2 n1)), Black: 415#(and (<= n2 n1) (<= 1 n2)), 298#(and (<= 0 n1) (or (<= n1 n3) (<= 1 n2))), Black: 160#(and (<= 0 n1) (<= n2 n1)), Black: 161#(and (<= 1 n1) (<= (+ n2 1) n1)), Black: 162#(and (<= 1 n1) (= n2 n1)), Black: 170#(and (<= 1 n1) (<= n3 n1) (= n2 n1)), Black: 172#(and (<= n1 n2) (<= 1 n1) (<= 2 n2)), Black: 159#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), 181#true, 438#(and (<= 1 i) (<= i1 0) (<= 0 i1) (<= i 1)), Black: 294#(and (<= n1 n3) (<= 0 n3) (<= n2 n1) (<= n3 n1)), Black: 295#(and (<= n1 n3) (<= 0 n3) (<= n3 n1)), Black: 296#(and (<= n1 n3) (<= 0 n1)), 67#true, Black: 299#(and (<= 1 n1) (or (<= n1 (+ n3 1)) (<= 1 n2))), Black: 300#(and (<= 1 n1) (or (<= n1 n3) (<= 1 n2))), Black: 305#(and (<= n1 n3) (<= 1 n1)), Black: 192#(and (<= 2 i) (<= i1 1) (<= i 2) (<= 1 i1)), Black: 307#(and (<= 1 n1) (<= 1 n2)), Black: 196#(and (<= 2 i2) (<= i2 2) (<= i1 1) (< 2 i) (<= i 3) (<= 1 i1)), Black: 309#(and (<= n1 n3) (<= 1 n1) (<= 1 n2)), Black: 311#(and (<= 1 n1) (<= 2 n2)), Black: 184#(and (<= 1 i) (<= i 1)), Black: 185#(and (<= i1 1) (<= 1 i1)), Black: 315#(and (<= n1 n3) (< n2 n1) (<= 2 n2)), Black: 186#(and (<= 2 i) (<= i 2)), 210#(and (<= 1 n3) (<= n3 n2) (not (= n3 n2))), Black: 208#(and (<= 1 n3) (<= n3 (+ n2 1))), Black: 209#(and (<= 1 n3) (<= n3 n2)), Black: 83#(and (<= 1 i2) (<= i3 0) (<= 2 i) (<= i 2) (<= i2 1) (<= 0 i3)), Black: 212#(and (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 69#(and (<= i 0) (<= 0 i)), Black: 214#(and (<= n1 n3) (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 205#(and (<= n1 n3) (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 79#(and (<= i3 0) (<= 1 i) (<= i 1) (<= 0 i3)), Black: 206#(and (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 207#(and (<= n3 n2) (<= 0 n3)), 95#true, 224#true, Black: 97#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), Black: 98#(and (<= (+ n3 1) n1) (<= 1 n1) (<= (+ n2 1) n1)), Black: 99#(and (<= (+ n3 1) n1) (<= 1 n1) (= n2 n1)), Black: 227#(and (<= 0 n3) (<= n2 n3) (<= n3 n1)), Black: 228#(and (<= 0 n3) (<= n3 n1)), Black: 103#(and (<= n1 n2) (<= 1 n1) (<= n2 n1) (<= n3 n1)), Black: 229#(and (<= (+ n3 1) n1) (<= 0 n3)), Black: 230#(and (<= 1 n3) (not (= n3 n1)) (< n3 (+ n1 1))), Black: 232#(and (<= (+ n3 1) n1) (<= 0 n3) (<= n2 n3)), Black: 112#e2, 245#(and (<= 0 n1) (<= 0 n3)), Black: 117#e1, 120#true, Black: 373#(and (or (and (<= 1 n3) (< n3 n1)) (<= n1 n2)) (<= 1 n1) (<= 0 n3)), Black: 375#(and (or (and (<= 1 n3) (< n3 n1)) (<= n1 n2)) (<= 0 n3) (<= n2 n1) (or (and (<= 1 n3) (< n3 n1)) (<= 2 n2)))]) [2021-03-25 09:31:20,077 INFO L384 tUnfolder$Statistics]: this new event has 24 ancestors and is not cut-off event [2021-03-25 09:31:20,077 INFO L387 tUnfolder$Statistics]: existing Event has 25 ancestors and is not cut-off event [2021-03-25 09:31:20,077 INFO L387 tUnfolder$Statistics]: existing Event has 25 ancestors and is not cut-off event [2021-03-25 09:31:20,077 INFO L387 tUnfolder$Statistics]: existing Event has 26 ancestors and is not cut-off event [2021-03-25 09:31:20,639 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([150] L68-->thread3EXIT: Formula: (= v_n3_15 0) InVars {} OutVars{n3=v_n3_15} AuxVars[] AssignedVars[n3][339], [Black: 377#(and (or (and (<= 1 n3) (< n3 n1)) (<= n1 n2)) (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 363#(and (<= 1 n1) (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3)), Black: 365#(and (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 349#(and (<= n1 n2) (<= 0 n3) (<= n2 n1) (<= 1 n2)), Black: 367#(and (<= 1 n1) (<= 0 n3) (or (and (<= 1 n3) (< n3 n1)) (<= 2 n2))), 390#true, 10#thread1EXITtrue, Black: 133#(and (<= n1 n3) (<= 1 n1) (<= n2 0)), Black: 122#(and (<= n1 n3) (<= 0 n1) (<= n2 0)), Black: 400#(and (<= n1 n2) (<= n1 (+ n3 1)) (<= 1 n1)), Black: 124#(and (<= 1 n1) (<= 0 n3) (<= n2 0)), Black: 402#(and (<= n1 n3) (<= n1 n2) (<= 1 n1)), Black: 125#(and (<= 1 n3) (<= 1 n1) (<= n2 0)), Black: 256#(and (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 141#(and (<= n1 n2) (not (= n1 0)) (or (<= n1 0) (= n2 n1)) (< n3 n1)), Black: 394#(and (<= n1 n3) (<= 0 n1)), Black: 258#(and (<= n1 n3) (<= 1 n1) (<= n2 n1)), Black: 395#(and (<= n1 (+ n3 1)) (<= 1 n1)), Black: 260#(and (<= 1 n1) (<= 0 n3)), Black: 396#(and (<= n1 n3) (<= 1 n1)), Black: 398#(and (<= n1 n2) (not (= n1 0))), Black: 262#(and (<= 1 n1) (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3)), Black: 264#(and (or (<= 1 n3) (<= 1 n2)) (<= 1 n1) (<= 0 n3)), 410#true, Black: 268#(and (<= 1 n1) (<= 0 n3) (or (and (<= 1 n3) (< n3 n1)) (<= 2 n2))), Black: 154#e3, Black: 270#(and (or (<= 1 n3) (<= 1 n2)) (<= 1 n1) (<= 0 n3) (<= n2 n1)), 157#true, Black: 272#(and (<= 0 n3) (<= n2 n1) (or (and (<= 1 n3) (< n3 n1)) (and (< n2 n1) (<= 2 n2)))), Black: 243#(and (<= n1 n3) (<= 0 n1) (<= n2 n1)), 32#L77true, Black: 244#(and (<= 0 n1) (<= 0 n3) (<= n2 n1)), Black: 276#(and (<= 1 n3) (<= n2 n1) (< n3 n1)), Black: 254#(and (<= 1 n1) (<= 0 n3) (<= n2 n1)), 292#true, Black: 416#(and (<= (+ n2 1) n1) (<= 1 n2)), Black: 418#(and (<= n1 n2) (<= n3 n2) (<= n2 n3) (<= n2 n1) (<= 1 n2)), Black: 412#(and (<= n1 n2) (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 413#(and (<= (+ n1 1) n2) (<= 1 n2) (<= (+ n3 1) n2)), Black: 414#(and (<= 1 n2) (<= (+ n3 1) n2) (= n2 n1)), Black: 415#(and (<= n2 n1) (<= 1 n2)), Black: 160#(and (<= 0 n1) (<= n2 n1)), Black: 161#(and (<= 1 n1) (<= (+ n2 1) n1)), Black: 162#(and (<= 1 n1) (= n2 n1)), 48#L45true, 50#thread3EXITtrue, Black: 170#(and (<= 1 n1) (<= n3 n1) (= n2 n1)), Black: 172#(and (<= n1 n2) (<= 1 n1) (<= 2 n2)), Black: 159#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), 181#true, 442#(and (<= 2 i) (<= i 2) (<= 1 i3) (<= i3 1) (<= i1 0) (<= 0 i1)), Black: 294#(and (<= n1 n3) (<= 0 n3) (<= n2 n1) (<= n3 n1)), Black: 295#(and (<= n1 n3) (<= 0 n3) (<= n3 n1)), Black: 296#(and (<= n1 n3) (<= 0 n1)), Black: 298#(and (<= 0 n1) (or (<= n1 n3) (<= 1 n2))), 67#true, Black: 299#(and (<= 1 n1) (or (<= n1 (+ n3 1)) (<= 1 n2))), Black: 300#(and (<= 1 n1) (or (<= n1 n3) (<= 1 n2))), Black: 305#(and (<= n1 n3) (<= 1 n1)), Black: 192#(and (<= 2 i) (<= i1 1) (<= i 2) (<= 1 i1)), Black: 307#(and (<= 1 n1) (<= 1 n2)), Black: 196#(and (<= 2 i2) (<= i2 2) (<= i1 1) (< 2 i) (<= i 3) (<= 1 i1)), Black: 309#(and (<= n1 n3) (<= 1 n1) (<= 1 n2)), Black: 184#(and (<= 1 i) (<= i 1)), Black: 311#(and (<= 1 n1) (<= 2 n2)), Black: 185#(and (<= i1 1) (<= 1 i1)), Black: 186#(and (<= 2 i) (<= i 2)), Black: 315#(and (<= n1 n3) (< n2 n1) (<= 2 n2)), 207#(and (<= n3 n2) (<= 0 n3)), Black: 208#(and (<= 1 n3) (<= n3 (+ n2 1))), Black: 209#(and (<= 1 n3) (<= n3 n2)), Black: 210#(and (<= 1 n3) (<= n3 n2) (not (= n3 n2))), Black: 83#(and (<= 1 i2) (<= i3 0) (<= 2 i) (<= i 2) (<= i2 1) (<= 0 i3)), Black: 212#(and (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 214#(and (<= n1 n3) (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 69#(and (<= i 0) (<= 0 i)), Black: 205#(and (<= n1 n3) (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 79#(and (<= i3 0) (<= 1 i) (<= i 1) (<= 0 i3)), Black: 206#(and (<= n3 n2) (<= 0 n3) (<= n2 n3)), 95#true, 224#true, Black: 97#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), Black: 98#(and (<= (+ n3 1) n1) (<= 1 n1) (<= (+ n2 1) n1)), Black: 99#(and (<= (+ n3 1) n1) (<= 1 n1) (= n2 n1)), Black: 227#(and (<= 0 n3) (<= n2 n3) (<= n3 n1)), Black: 103#(and (<= n1 n2) (<= 1 n1) (<= n2 n1) (<= n3 n1)), Black: 228#(and (<= 0 n3) (<= n3 n1)), Black: 229#(and (<= (+ n3 1) n1) (<= 0 n3)), Black: 230#(and (<= 1 n3) (not (= n3 n1)) (< n3 (+ n1 1))), Black: 232#(and (<= (+ n3 1) n1) (<= 0 n3) (<= n2 n3)), Black: 112#e2, 245#(and (<= 0 n1) (<= 0 n3)), Black: 117#e1, 120#true, Black: 373#(and (or (and (<= 1 n3) (< n3 n1)) (<= n1 n2)) (<= 1 n1) (<= 0 n3)), Black: 375#(and (or (and (<= 1 n3) (< n3 n1)) (<= n1 n2)) (<= 0 n3) (<= n2 n1) (or (and (<= 1 n3) (< n3 n1)) (<= 2 n2)))]) [2021-03-25 09:31:20,639 INFO L384 tUnfolder$Statistics]: this new event has 28 ancestors and is cut-off event [2021-03-25 09:31:20,639 INFO L387 tUnfolder$Statistics]: existing Event has 27 ancestors and is cut-off event [2021-03-25 09:31:20,639 INFO L387 tUnfolder$Statistics]: existing Event has 28 ancestors and is cut-off event [2021-03-25 09:31:20,639 INFO L387 tUnfolder$Statistics]: existing Event has 27 ancestors and is cut-off event [2021-03-25 09:31:22,125 INFO L129 PetriNetUnfolder]: 4587/13284 cut-off events. [2021-03-25 09:31:22,126 INFO L130 PetriNetUnfolder]: For 195949/199550 co-relation queries the response was YES. [2021-03-25 09:31:22,278 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83101 conditions, 13284 events. 4587/13284 cut-off events. For 195949/199550 co-relation queries the response was YES. Maximal size of possible extension queue 818. Compared 154566 event pairs, 944 based on Foata normal form. 948/13577 useless extension candidates. Maximal degree in co-relation 82440. Up to 2352 conditions per place. [2021-03-25 09:31:22,324 INFO L132 encePairwiseOnDemand]: 204/217 looper letters, 30 selfloop transitions, 38 changer transitions 32/703 dead transitions. [2021-03-25 09:31:22,324 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 703 transitions, 12546 flow [2021-03-25 09:31:22,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-25 09:31:22,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-03-25 09:31:22,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3080 transitions. [2021-03-25 09:31:22,328 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.946236559139785 [2021-03-25 09:31:22,328 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3080 transitions. [2021-03-25 09:31:22,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3080 transitions. [2021-03-25 09:31:22,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:31:22,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3080 transitions. [2021-03-25 09:31:22,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 205.33333333333334) internal successors, (3080), 15 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:31:22,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 217.0) internal successors, (3472), 16 states have internal predecessors, (3472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:31:22,337 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 217.0) internal successors, (3472), 16 states have internal predecessors, (3472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:31:22,337 INFO L185 Difference]: Start difference. First operand has 237 places, 672 transitions, 12249 flow. Second operand 15 states and 3080 transitions. [2021-03-25 09:31:22,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 703 transitions, 12546 flow [2021-03-25 09:31:22,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 703 transitions, 12364 flow, removed 91 selfloop flow, removed 0 redundant places. [2021-03-25 09:31:22,962 INFO L241 Difference]: Finished difference. Result has 256 places, 659 transitions, 11591 flow [2021-03-25 09:31:22,962 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=12067, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=672, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=644, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=11591, PETRI_PLACES=256, PETRI_TRANSITIONS=659} [2021-03-25 09:31:22,963 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 202 predicate places. [2021-03-25 09:31:22,963 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:31:22,963 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 256 places, 659 transitions, 11591 flow [2021-03-25 09:31:22,963 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 256 places, 659 transitions, 11591 flow [2021-03-25 09:31:22,967 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 254 places, 659 transitions, 11591 flow [2021-03-25 09:31:24,953 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([134] L65-->L66: Formula: (or (= v_n2_14 0) (and (not (< v_n2_14 v_n3_13)) (not (= v_n2_14 v_n3_13)))) InVars {n2=v_n2_14, n3=v_n3_13} OutVars{n2=v_n2_14, n3=v_n3_13} AuxVars[] AssignedVars[][154], [10#thread1EXITtrue, 17#L66true, Black: 256#(and (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 258#(and (<= n1 n3) (<= 1 n1) (<= n2 n1)), Black: 260#(and (<= 1 n1) (<= 0 n3)), Black: 262#(and (<= 1 n1) (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3)), Black: 264#(and (or (<= 1 n3) (<= 1 n2)) (<= 1 n1) (<= 0 n3)), Black: 268#(and (<= 1 n1) (<= 0 n3) (or (and (<= 1 n3) (< n3 n1)) (<= 2 n2))), Black: 270#(and (or (<= 1 n3) (<= 1 n2)) (<= 1 n1) (<= 0 n3) (<= n2 n1)), Black: 272#(and (<= 0 n3) (<= n2 n1) (or (and (<= 1 n3) (< n3 n1)) (and (< n2 n1) (<= 2 n2)))), Black: 243#(and (<= n1 n3) (<= 0 n1) (<= n2 n1)), 32#L77true, Black: 244#(and (<= 0 n1) (<= 0 n3) (<= n2 n1)), Black: 276#(and (<= 1 n3) (<= n2 n1) (< n3 n1)), Black: 254#(and (<= 1 n1) (<= 0 n3) (<= n2 n1)), 292#true, 40#thread2EXITtrue, Black: 294#(and (<= n1 n3) (<= 0 n3) (<= n2 n1) (<= n3 n1)), Black: 295#(and (<= n1 n3) (<= 0 n3) (<= n3 n1)), Black: 296#(and (<= n1 n3) (<= 0 n1)), Black: 298#(and (<= 0 n1) (or (<= n1 n3) (<= 1 n2))), Black: 299#(and (<= 1 n1) (or (<= n1 (+ n3 1)) (<= 1 n2))), 67#true, Black: 300#(and (<= 1 n1) (or (<= n1 n3) (<= 1 n2))), Black: 305#(and (<= n1 n3) (<= 1 n1)), Black: 307#(and (<= 1 n1) (<= 1 n2)), Black: 309#(and (<= n1 n3) (<= 1 n1) (<= 1 n2)), Black: 311#(and (<= 1 n1) (<= 2 n2)), Black: 315#(and (<= n1 n3) (< n2 n1) (<= 2 n2)), Black: 83#(and (<= 1 i2) (<= i3 0) (<= 2 i) (<= i 2) (<= i2 1) (<= 0 i3)), Black: 69#(and (<= i 0) (<= 0 i)), Black: 79#(and (<= i3 0) (<= 1 i) (<= i 1) (<= 0 i3)), 95#true, Black: 97#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), Black: 98#(and (<= (+ n3 1) n1) (<= 1 n1) (<= (+ n2 1) n1)), Black: 99#(and (<= (+ n3 1) n1) (<= 1 n1) (= n2 n1)), Black: 103#(and (<= n1 n2) (<= 1 n1) (<= n2 n1) (<= n3 n1)), Black: 112#e2, Black: 117#e1, 120#true, Black: 373#(and (or (and (<= 1 n3) (< n3 n1)) (<= n1 n2)) (<= 1 n1) (<= 0 n3)), Black: 375#(and (or (and (<= 1 n3) (< n3 n1)) (<= n1 n2)) (<= 0 n3) (<= n2 n1) (or (and (<= 1 n3) (< n3 n1)) (<= 2 n2))), Black: 377#(and (or (and (<= 1 n3) (< n3 n1)) (<= n1 n2)) (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 363#(and (<= 1 n1) (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3)), Black: 365#(and (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 349#(and (<= n1 n2) (<= 0 n3) (<= n2 n1) (<= 1 n2)), Black: 367#(and (<= 1 n1) (<= 0 n3) (or (and (<= 1 n3) (< n3 n1)) (<= 2 n2))), 390#true, Black: 133#(and (<= n1 n3) (<= 1 n1) (<= n2 0)), Black: 122#(and (<= n1 n3) (<= 0 n1) (<= n2 0)), Black: 400#(and (<= n1 n2) (<= n1 (+ n3 1)) (<= 1 n1)), Black: 124#(and (<= 1 n1) (<= 0 n3) (<= n2 0)), Black: 402#(and (<= n1 n3) (<= n1 n2) (<= 1 n1)), Black: 125#(and (<= 1 n3) (<= 1 n1) (<= n2 0)), Black: 141#(and (<= n1 n2) (not (= n1 0)) (or (<= n1 0) (= n2 n1)) (< n3 n1)), Black: 394#(and (<= n1 n3) (<= 0 n1)), Black: 395#(and (<= n1 (+ n3 1)) (<= 1 n1)), Black: 396#(and (<= n1 n3) (<= 1 n1)), Black: 398#(and (<= n1 n2) (not (= n1 0))), 410#true, Black: 154#e3, 157#true, Black: 416#(and (<= (+ n2 1) n1) (<= 1 n2)), Black: 418#(and (<= n1 n2) (<= n3 n2) (<= n2 n3) (<= n2 n1) (<= 1 n2)), Black: 412#(and (<= n1 n2) (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 413#(and (<= (+ n1 1) n2) (<= 1 n2) (<= (+ n3 1) n2)), Black: 414#(and (<= 1 n2) (<= (+ n3 1) n2) (= n2 n1)), Black: 415#(and (<= n2 n1) (<= 1 n2)), 426#true, Black: 160#(and (<= 0 n1) (<= n2 n1)), Black: 161#(and (<= 1 n1) (<= (+ n2 1) n1)), Black: 162#(and (<= 1 n1) (= n2 n1)), Black: 170#(and (<= 1 n1) (<= n3 n1) (= n2 n1)), Black: 172#(and (<= n1 n2) (<= 1 n1) (<= 2 n2)), Black: 159#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), 181#true, Black: 452#(and (<= 2 i2) (<= i2 2) (< 2 i) (<= i 3) (<= 1 i3) (<= i3 1) (<= i1 0) (<= 0 i1)), Black: 192#(and (<= 2 i) (<= i1 1) (<= i 2) (<= 1 i1)), Black: 196#(and (<= 2 i2) (<= i2 2) (<= i1 1) (< 2 i) (<= i 3) (<= 1 i1)), Black: 438#(and (<= 1 i) (<= i1 0) (<= 0 i1) (<= i 1)), Black: 442#(and (<= 2 i) (<= i 2) (<= 1 i3) (<= i3 1) (<= i1 0) (<= 0 i1)), Black: 184#(and (<= 1 i) (<= i 1)), Black: 185#(and (<= i1 1) (<= 1 i1)), Black: 428#(and (<= i 0) (<= 0 i)), Black: 186#(and (<= 2 i) (<= i 2)), Black: 429#(and (<= i1 0) (<= 0 i1)), 203#true, Black: 208#(and (<= 1 n3) (<= n3 (+ n2 1))), Black: 209#(and (<= 1 n3) (<= n3 n2)), Black: 210#(and (<= 1 n3) (<= n3 n2) (not (= n3 n2))), Black: 212#(and (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 214#(and (<= n1 n3) (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 205#(and (<= n1 n3) (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 206#(and (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 207#(and (<= n3 n2) (<= 0 n3)), 224#true, Black: 227#(and (<= 0 n3) (<= n2 n3) (<= n3 n1)), Black: 228#(and (<= 0 n3) (<= n3 n1)), Black: 229#(and (<= (+ n3 1) n1) (<= 0 n3)), Black: 230#(and (<= 1 n3) (not (= n3 n1)) (< n3 (+ n1 1))), Black: 232#(and (<= (+ n3 1) n1) (<= 0 n3) (<= n2 n3)), 245#(and (<= 0 n1) (<= 0 n3))]) [2021-03-25 09:31:24,954 INFO L384 tUnfolder$Statistics]: this new event has 32 ancestors and is cut-off event [2021-03-25 09:31:24,954 INFO L387 tUnfolder$Statistics]: existing Event has 29 ancestors and is cut-off event [2021-03-25 09:31:24,954 INFO L387 tUnfolder$Statistics]: existing Event has 29 ancestors and is cut-off event [2021-03-25 09:31:24,954 INFO L387 tUnfolder$Statistics]: existing Event has 31 ancestors and is cut-off event [2021-03-25 09:31:25,205 INFO L129 PetriNetUnfolder]: 4105/12428 cut-off events. [2021-03-25 09:31:25,205 INFO L130 PetriNetUnfolder]: For 188416/191485 co-relation queries the response was YES. [2021-03-25 09:31:25,321 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78910 conditions, 12428 events. 4105/12428 cut-off events. For 188416/191485 co-relation queries the response was YES. Maximal size of possible extension queue 825. Compared 147434 event pairs, 825 based on Foata normal form. 686/12500 useless extension candidates. Maximal degree in co-relation 78276. Up to 2242 conditions per place. [2021-03-25 09:31:25,480 INFO L142 LiptonReduction]: Number of co-enabled transitions 6952 [2021-03-25 09:31:54,561 INFO L154 LiptonReduction]: Checked pairs total: 407 [2021-03-25 09:31:54,561 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 09:31:54,561 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 31598 [2021-03-25 09:31:54,561 INFO L480 AbstractCegarLoop]: Abstraction has has 253 places, 658 transitions, 11600 flow [2021-03-25 09:31:54,562 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 202.88888888888889) internal successors, (1826), 9 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:31:54,562 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:31:54,562 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] [2021-03-25 09:31:54,562 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-25 09:31:54,562 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:31:54,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:31:54,563 INFO L82 PathProgramCache]: Analyzing trace with hash 2083950679, now seen corresponding path program 1 times [2021-03-25 09:31:54,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:31:54,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873644757] [2021-03-25 09:31:54,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:31:54,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:31:54,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:31:54,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 09:31:54,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:31:54,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 09:31:54,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:31:54,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 09:31:54,609 INFO L142 QuantifierPusher]: treesize reduction 19, result has 53.7 percent of original size [2021-03-25 09:31:54,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 09:31:54,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:31:54,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:31:54,628 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:31:54,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 09:31:54,653 INFO L142 QuantifierPusher]: treesize reduction 9, result has 57.1 percent of original size [2021-03-25 09:31:54,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 09:31:54,664 INFO L142 QuantifierPusher]: treesize reduction 17, result has 5.6 percent of original size [2021-03-25 09:31:54,664 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:31:54,665 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:31:54,665 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:31:54,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:31:54,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873644757] [2021-03-25 09:31:54,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:31:54,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-25 09:31:54,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779936290] [2021-03-25 09:31:54,667 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-25 09:31:54,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:31:54,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-25 09:31:54,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-25 09:31:54,669 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 222 [2021-03-25 09:31:54,670 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 658 transitions, 11600 flow. Second operand has 6 states, 6 states have (on average 45.166666666666664) internal successors, (271), 6 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:31:54,670 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:31:54,671 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 222 [2021-03-25 09:31:54,671 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:31:59,452 INFO L129 PetriNetUnfolder]: 6311/16252 cut-off events. [2021-03-25 09:31:59,452 INFO L130 PetriNetUnfolder]: For 318477/323089 co-relation queries the response was YES. [2021-03-25 09:31:59,794 INFO L84 FinitePrefix]: Finished finitePrefix Result has 117251 conditions, 16252 events. 6311/16252 cut-off events. For 318477/323089 co-relation queries the response was YES. Maximal size of possible extension queue 829. Compared 181693 event pairs, 1810 based on Foata normal form. 550/16256 useless extension candidates. Maximal degree in co-relation 116600. Up to 9417 conditions per place. [2021-03-25 09:31:59,857 INFO L132 encePairwiseOnDemand]: 199/222 looper letters, 583 selfloop transitions, 79 changer transitions 0/731 dead transitions. [2021-03-25 09:31:59,857 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 731 transitions, 14162 flow [2021-03-25 09:31:59,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 09:31:59,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 09:31:59,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 458 transitions. [2021-03-25 09:31:59,858 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2947232947232947 [2021-03-25 09:31:59,858 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 458 transitions. [2021-03-25 09:31:59,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 458 transitions. [2021-03-25 09:31:59,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:31:59,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 458 transitions. [2021-03-25 09:31:59,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 65.42857142857143) internal successors, (458), 7 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:31:59,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 222.0) internal successors, (1776), 8 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:31:59,860 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 222.0) internal successors, (1776), 8 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:31:59,860 INFO L185 Difference]: Start difference. First operand has 253 places, 658 transitions, 11600 flow. Second operand 7 states and 458 transitions. [2021-03-25 09:31:59,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 731 transitions, 14162 flow [2021-03-25 09:32:00,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 731 transitions, 13987 flow, removed 59 selfloop flow, removed 3 redundant places. [2021-03-25 09:32:00,992 INFO L241 Difference]: Finished difference. Result has 259 places, 677 transitions, 12060 flow [2021-03-25 09:32:00,993 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=11430, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=657, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=587, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12060, PETRI_PLACES=259, PETRI_TRANSITIONS=677} [2021-03-25 09:32:00,993 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 205 predicate places. [2021-03-25 09:32:00,993 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:32:00,993 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 259 places, 677 transitions, 12060 flow [2021-03-25 09:32:00,994 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 259 places, 677 transitions, 12060 flow [2021-03-25 09:32:00,999 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 259 places, 677 transitions, 12060 flow [2021-03-25 09:32:03,156 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([134] L65-->L66: Formula: (or (= v_n2_14 0) (and (not (< v_n2_14 v_n3_13)) (not (= v_n2_14 v_n3_13)))) InVars {n2=v_n2_14, n3=v_n3_13} OutVars{n2=v_n2_14, n3=v_n3_13} AuxVars[] AssignedVars[][359], [10#thread1EXITtrue, 17#L66true, Black: 256#(and (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 258#(and (<= n1 n3) (<= 1 n1) (<= n2 n1)), Black: 260#(and (<= 1 n1) (<= 0 n3)), Black: 262#(and (<= 1 n1) (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3)), Black: 264#(and (or (<= 1 n3) (<= 1 n2)) (<= 1 n1) (<= 0 n3)), Black: 268#(and (<= 1 n1) (<= 0 n3) (or (and (<= 1 n3) (< n3 n1)) (<= 2 n2))), Black: 270#(and (or (<= 1 n3) (<= 1 n2)) (<= 1 n1) (<= 0 n3) (<= n2 n1)), Black: 272#(and (<= 0 n3) (<= n2 n1) (or (and (<= 1 n3) (< n3 n1)) (and (< n2 n1) (<= 2 n2)))), Black: 243#(and (<= n1 n3) (<= 0 n1) (<= n2 n1)), Black: 244#(and (<= 0 n1) (<= 0 n3) (<= n2 n1)), 32#L77true, Black: 276#(and (<= 1 n3) (<= n2 n1) (< n3 n1)), Black: 254#(and (<= 1 n1) (<= 0 n3) (<= n2 n1)), 292#true, 40#thread2EXITtrue, Black: 294#(and (<= n1 n3) (<= 0 n3) (<= n2 n1) (<= n3 n1)), Black: 295#(and (<= n1 n3) (<= 0 n3) (<= n3 n1)), Black: 296#(and (<= n1 n3) (<= 0 n1)), Black: 298#(and (<= 0 n1) (or (<= n1 n3) (<= 1 n2))), 67#true, Black: 299#(and (<= 1 n1) (or (<= n1 (+ n3 1)) (<= 1 n2))), Black: 300#(and (<= 1 n1) (or (<= n1 n3) (<= 1 n2))), Black: 305#(and (<= n1 n3) (<= 1 n1)), Black: 307#(and (<= 1 n1) (<= 1 n2)), Black: 309#(and (<= n1 n3) (<= 1 n1) (<= 1 n2)), Black: 311#(and (<= 1 n1) (<= 2 n2)), Black: 315#(and (<= n1 n3) (< n2 n1) (<= 2 n2)), Black: 83#(and (<= 1 i2) (<= i3 0) (<= 2 i) (<= i 2) (<= i2 1) (<= 0 i3)), Black: 69#(and (<= i 0) (<= 0 i)), Black: 79#(and (<= i3 0) (<= 1 i) (<= i 1) (<= 0 i3)), 95#true, Black: 97#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), Black: 98#(and (<= (+ n3 1) n1) (<= 1 n1) (<= (+ n2 1) n1)), Black: 99#(and (<= (+ n3 1) n1) (<= 1 n1) (= n2 n1)), Black: 103#(and (<= n1 n2) (<= 1 n1) (<= n2 n1) (<= n3 n1)), Black: 112#e2, Black: 117#e1, 120#true, Black: 373#(and (or (and (<= 1 n3) (< n3 n1)) (<= n1 n2)) (<= 1 n1) (<= 0 n3)), Black: 375#(and (or (and (<= 1 n3) (< n3 n1)) (<= n1 n2)) (<= 0 n3) (<= n2 n1) (or (and (<= 1 n3) (< n3 n1)) (<= 2 n2))), Black: 377#(and (or (and (<= 1 n3) (< n3 n1)) (<= n1 n2)) (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 363#(and (<= 1 n1) (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3)), Black: 365#(and (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 349#(and (<= n1 n2) (<= 0 n3) (<= n2 n1) (<= 1 n2)), 390#true, Black: 133#(and (<= n1 n3) (<= 1 n1) (<= n2 0)), Black: 122#(and (<= n1 n3) (<= 0 n1) (<= n2 0)), Black: 400#(and (<= n1 n2) (<= n1 (+ n3 1)) (<= 1 n1)), Black: 124#(and (<= 1 n1) (<= 0 n3) (<= n2 0)), Black: 402#(and (<= n1 n3) (<= n1 n2) (<= 1 n1)), Black: 125#(and (<= 1 n3) (<= 1 n1) (<= n2 0)), Black: 141#(and (<= n1 n2) (not (= n1 0)) (or (<= n1 0) (= n2 n1)) (< n3 n1)), Black: 394#(and (<= n1 n3) (<= 0 n1)), Black: 395#(and (<= n1 (+ n3 1)) (<= 1 n1)), Black: 396#(and (<= n1 n3) (<= 1 n1)), Black: 398#(and (<= n1 n2) (not (= n1 0))), 410#true, Black: 154#e3, 157#true, Black: 416#(and (<= (+ n2 1) n1) (<= 1 n2)), Black: 418#(and (<= n1 n2) (<= n3 n2) (<= n2 n3) (<= n2 n1) (<= 1 n2)), Black: 412#(and (<= n1 n2) (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 413#(and (<= (+ n1 1) n2) (<= 1 n2) (<= (+ n3 1) n2)), Black: 414#(and (<= 1 n2) (<= (+ n3 1) n2) (= n2 n1)), Black: 415#(and (<= n2 n1) (<= 1 n2)), 426#true, Black: 160#(and (<= 0 n1) (<= n2 n1)), Black: 161#(and (<= 1 n1) (<= (+ n2 1) n1)), Black: 162#(and (<= 1 n1) (= n2 n1)), Black: 170#(and (<= 1 n1) (<= n3 n1) (= n2 n1)), Black: 172#(and (<= n1 n2) (<= 1 n1) (<= 2 n2)), Black: 159#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), 181#true, Black: 452#(and (<= 2 i2) (<= i2 2) (< 2 i) (<= i 3) (<= 1 i3) (<= i3 1) (<= i1 0) (<= 0 i1)), Black: 192#(and (<= 2 i) (<= i1 1) (<= i 2) (<= 1 i1)), Black: 196#(and (<= 2 i2) (<= i2 2) (<= i1 1) (< 2 i) (<= i 3) (<= 1 i1)), Black: 438#(and (<= 1 i) (<= i1 0) (<= 0 i1) (<= i 1)), Black: 442#(and (<= 2 i) (<= i 2) (<= 1 i3) (<= i3 1) (<= i1 0) (<= 0 i1)), Black: 184#(and (<= 1 i) (<= i 1)), Black: 185#(and (<= i1 1) (<= 1 i1)), Black: 428#(and (<= i 0) (<= 0 i)), Black: 186#(and (<= 2 i) (<= i 2)), Black: 429#(and (<= i1 0) (<= 0 i1)), 459#true, 203#true, Black: 464#(and (< n3 (+ n2 1)) (<= n2 n3) (<= 1 n2)), Black: 466#(and (<= n1 n2) (<= n3 n2) (<= n2 n3) (<= 1 n2)), Black: 463#(and (<= n2 (+ n3 1)) (<= 1 n2) (<= (+ n3 1) n2)), Black: 208#(and (<= 1 n3) (<= n3 (+ n2 1))), Black: 209#(and (<= 1 n3) (<= n3 n2)), Black: 210#(and (<= 1 n3) (<= n3 n2) (not (= n3 n2))), Black: 212#(and (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 214#(and (<= n1 n3) (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 205#(and (<= n1 n3) (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 206#(and (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 207#(and (<= n3 n2) (<= 0 n3)), 224#true, Black: 227#(and (<= 0 n3) (<= n2 n3) (<= n3 n1)), Black: 228#(and (<= 0 n3) (<= n3 n1)), Black: 229#(and (<= (+ n3 1) n1) (<= 0 n3)), Black: 230#(and (<= 1 n3) (not (= n3 n1)) (< n3 (+ n1 1))), Black: 232#(and (<= (+ n3 1) n1) (<= 0 n3) (<= n2 n3)), 245#(and (<= 0 n1) (<= 0 n3))]) [2021-03-25 09:32:03,156 INFO L384 tUnfolder$Statistics]: this new event has 32 ancestors and is cut-off event [2021-03-25 09:32:03,156 INFO L387 tUnfolder$Statistics]: existing Event has 31 ancestors and is cut-off event [2021-03-25 09:32:03,156 INFO L387 tUnfolder$Statistics]: existing Event has 29 ancestors and is cut-off event [2021-03-25 09:32:03,156 INFO L387 tUnfolder$Statistics]: existing Event has 29 ancestors and is cut-off event [2021-03-25 09:32:03,273 INFO L129 PetriNetUnfolder]: 4250/12851 cut-off events. [2021-03-25 09:32:03,273 INFO L130 PetriNetUnfolder]: For 202487/205620 co-relation queries the response was YES. [2021-03-25 09:32:03,443 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82700 conditions, 12851 events. 4250/12851 cut-off events. For 202487/205620 co-relation queries the response was YES. Maximal size of possible extension queue 822. Compared 153425 event pairs, 879 based on Foata normal form. 770/13051 useless extension candidates. Maximal degree in co-relation 82064. Up to 2263 conditions per place. [2021-03-25 09:32:03,594 INFO L142 LiptonReduction]: Number of co-enabled transitions 6972 [2021-03-25 09:32:17,778 INFO L154 LiptonReduction]: Checked pairs total: 206 [2021-03-25 09:32:17,779 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 09:32:17,779 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 16786 [2021-03-25 09:32:17,779 INFO L480 AbstractCegarLoop]: Abstraction has has 259 places, 677 transitions, 12063 flow [2021-03-25 09:32:17,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 45.166666666666664) internal successors, (271), 6 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:32:17,779 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:32:17,779 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] [2021-03-25 09:32:17,779 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-25 09:32:17,779 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:32:17,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:32:17,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1644207860, now seen corresponding path program 1 times [2021-03-25 09:32:17,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:32:17,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706964825] [2021-03-25 09:32:17,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:32:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:32:17,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:32:17,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 09:32:17,808 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:32:17,809 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 09:32:17,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:32:17,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 09:32:17,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:32:17,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 09:32:17,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:32:17,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:32:17,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:32:17,836 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 09:32:17,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:32:17,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:32:17,854 INFO L142 QuantifierPusher]: treesize reduction 6, result has 66.7 percent of original size [2021-03-25 09:32:17,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 09:32:17,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:32:17,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:32:17,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:32:17,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:32:17,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:32:17,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706964825] [2021-03-25 09:32:17,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:32:17,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 09:32:17,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724661319] [2021-03-25 09:32:17,864 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 09:32:17,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:32:17,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 09:32:17,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-03-25 09:32:17,865 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 224 [2021-03-25 09:32:17,865 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 677 transitions, 12063 flow. Second operand has 8 states, 8 states have (on average 45.375) internal successors, (363), 8 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:32:17,865 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:32:17,865 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 224 [2021-03-25 09:32:17,865 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:32:22,759 INFO L129 PetriNetUnfolder]: 6548/17547 cut-off events. [2021-03-25 09:32:22,759 INFO L130 PetriNetUnfolder]: For 351830/355688 co-relation queries the response was YES. [2021-03-25 09:32:22,914 INFO L84 FinitePrefix]: Finished finitePrefix Result has 126267 conditions, 17547 events. 6548/17547 cut-off events. For 351830/355688 co-relation queries the response was YES. Maximal size of possible extension queue 984. Compared 203318 event pairs, 1405 based on Foata normal form. 874/17932 useless extension candidates. Maximal degree in co-relation 125590. Up to 6877 conditions per place. [2021-03-25 09:32:22,980 INFO L132 encePairwiseOnDemand]: 178/224 looper letters, 487 selfloop transitions, 331 changer transitions 18/905 dead transitions. [2021-03-25 09:32:22,980 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 905 transitions, 17422 flow [2021-03-25 09:32:22,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-25 09:32:22,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-25 09:32:22,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 662 transitions. [2021-03-25 09:32:22,981 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2955357142857143 [2021-03-25 09:32:22,982 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 662 transitions. [2021-03-25 09:32:22,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 662 transitions. [2021-03-25 09:32:22,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:32:22,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 662 transitions. [2021-03-25 09:32:22,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 66.2) internal successors, (662), 10 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:32:22,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 224.0) internal successors, (2464), 11 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:32:22,985 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 224.0) internal successors, (2464), 11 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:32:22,985 INFO L185 Difference]: Start difference. First operand has 259 places, 677 transitions, 12063 flow. Second operand 10 states and 662 transitions. [2021-03-25 09:32:22,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 905 transitions, 17422 flow [2021-03-25 09:32:24,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 905 transitions, 17258 flow, removed 39 selfloop flow, removed 4 redundant places. [2021-03-25 09:32:24,245 INFO L241 Difference]: Finished difference. Result has 270 places, 769 transitions, 14814 flow [2021-03-25 09:32:24,245 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=11941, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=677, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=248, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14814, PETRI_PLACES=270, PETRI_TRANSITIONS=769} [2021-03-25 09:32:24,245 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 216 predicate places. [2021-03-25 09:32:24,245 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:32:24,245 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 270 places, 769 transitions, 14814 flow [2021-03-25 09:32:24,245 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 270 places, 769 transitions, 14814 flow [2021-03-25 09:32:24,250 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 270 places, 769 transitions, 14814 flow [2021-03-25 09:32:26,222 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([149] L51-->thread2EXIT: Formula: (= v_n2_15 0) InVars {} OutVars{n2=v_n2_15} AuxVars[] AssignedVars[n2][582], [7#L30true, Black: 256#(and (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 258#(and (<= n1 n3) (<= 1 n1) (<= n2 n1)), Black: 260#(and (<= 1 n1) (<= 0 n3)), Black: 262#(and (<= 1 n1) (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3)), Black: 264#(and (or (<= 1 n3) (<= 1 n2)) (<= 1 n1) (<= 0 n3)), Black: 268#(and (<= 1 n1) (<= 0 n3) (or (and (<= 1 n3) (< n3 n1)) (<= 2 n2))), Black: 270#(and (or (<= 1 n3) (<= 1 n2)) (<= 1 n1) (<= 0 n3) (<= n2 n1)), Black: 272#(and (<= 0 n3) (<= n2 n1) (or (and (<= 1 n3) (< n3 n1)) (and (< n2 n1) (<= 2 n2)))), Black: 243#(and (<= n1 n3) (<= 0 n1) (<= n2 n1)), 32#L77true, Black: 244#(and (<= 0 n1) (<= 0 n3) (<= n2 n1)), Black: 276#(and (<= 1 n3) (<= n2 n1) (< n3 n1)), Black: 245#(and (<= 0 n1) (<= 0 n3)), 292#true, 40#thread2EXITtrue, 50#thread3EXITtrue, Black: 294#(and (<= n1 n3) (<= 0 n3) (<= n2 n1) (<= n3 n1)), Black: 295#(and (<= n1 n3) (<= 0 n3) (<= n3 n1)), Black: 296#(and (<= n1 n3) (<= 0 n1)), Black: 298#(and (<= 0 n1) (or (<= n1 n3) (<= 1 n2))), Black: 299#(and (<= 1 n1) (or (<= n1 (+ n3 1)) (<= 1 n2))), Black: 300#(and (<= 1 n1) (or (<= n1 n3) (<= 1 n2))), Black: 305#(and (<= n1 n3) (<= 1 n1)), Black: 307#(and (<= 1 n1) (<= 1 n2)), Black: 309#(and (<= n1 n3) (<= 1 n1) (<= 1 n2)), Black: 311#(and (<= 1 n1) (<= 2 n2)), Black: 315#(and (<= n1 n3) (< n2 n1) (<= 2 n2)), 83#(and (<= 1 i2) (<= i3 0) (<= 2 i) (<= i 2) (<= i2 1) (<= 0 i3)), 345#(and (<= 1 n1) (<= 0 n3) (<= n2 n1)), Black: 69#(and (<= i 0) (<= 0 i)), Black: 79#(and (<= i3 0) (<= 1 i) (<= i 1) (<= 0 i3)), 95#true, Black: 97#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), Black: 98#(and (<= (+ n3 1) n1) (<= 1 n1) (<= (+ n2 1) n1)), Black: 99#(and (<= (+ n3 1) n1) (<= 1 n1) (= n2 n1)), Black: 103#(and (<= n1 n2) (<= 1 n1) (<= n2 n1) (<= n3 n1)), Black: 112#e2, Black: 117#e1, 120#true, Black: 373#(and (or (and (<= 1 n3) (< n3 n1)) (<= n1 n2)) (<= 1 n1) (<= 0 n3)), Black: 375#(and (or (and (<= 1 n3) (< n3 n1)) (<= n1 n2)) (<= 0 n3) (<= n2 n1) (or (and (<= 1 n3) (< n3 n1)) (<= 2 n2))), Black: 377#(and (or (and (<= 1 n3) (< n3 n1)) (<= n1 n2)) (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 363#(and (<= 1 n1) (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3)), Black: 365#(and (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 349#(and (<= n1 n2) (<= 0 n3) (<= n2 n1) (<= 1 n2)), 390#true, Black: 122#(and (<= n1 n3) (<= 0 n1) (<= n2 0)), Black: 400#(and (<= n1 n2) (<= n1 (+ n3 1)) (<= 1 n1)), Black: 124#(and (<= 1 n1) (<= 0 n3) (<= n2 0)), Black: 125#(and (<= 1 n3) (<= 1 n1) (<= n2 0)), Black: 402#(and (<= n1 n3) (<= n1 n2) (<= 1 n1)), Black: 394#(and (<= n1 n3) (<= 0 n1)), Black: 141#(and (<= n1 n2) (not (= n1 0)) (or (<= n1 0) (= n2 n1)) (< n3 n1)), Black: 395#(and (<= n1 (+ n3 1)) (<= 1 n1)), Black: 396#(and (<= n1 n3) (<= 1 n1)), Black: 398#(and (<= n1 n2) (not (= n1 0))), 410#true, Black: 154#e3, 157#true, Black: 416#(and (<= (+ n2 1) n1) (<= 1 n2)), Black: 418#(and (<= n1 n2) (<= n3 n2) (<= n2 n3) (<= n2 n1) (<= 1 n2)), Black: 412#(and (<= n1 n2) (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 413#(and (<= (+ n1 1) n2) (<= 1 n2) (<= (+ n3 1) n2)), Black: 414#(and (<= 1 n2) (<= (+ n3 1) n2) (= n2 n1)), Black: 415#(and (<= n2 n1) (<= 1 n2)), Black: 160#(and (<= 0 n1) (<= n2 n1)), Black: 161#(and (<= 1 n1) (<= (+ n2 1) n1)), Black: 162#(and (<= 1 n1) (= n2 n1)), 432#(and (<= 2 i) (<= i 2)), Black: 170#(and (<= 1 n1) (<= n3 n1) (= n2 n1)), Black: 172#(and (<= n1 n2) (<= 1 n1) (<= 2 n2)), Black: 159#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), Black: 192#(and (<= 2 i) (<= i1 1) (<= i 2) (<= 1 i1)), Black: 452#(and (<= 2 i2) (<= i2 2) (< 2 i) (<= i 3) (<= 1 i3) (<= i3 1) (<= i1 0) (<= 0 i1)), Black: 196#(and (<= 2 i2) (<= i2 2) (<= i1 1) (< 2 i) (<= i 3) (<= 1 i1)), Black: 438#(and (<= 1 i) (<= i1 0) (<= 0 i1) (<= i 1)), Black: 442#(and (<= 2 i) (<= i 2) (<= 1 i3) (<= i3 1) (<= i1 0) (<= 0 i1)), Black: 184#(and (<= 1 i) (<= i 1)), Black: 185#(and (<= i1 1) (<= 1 i1)), Black: 428#(and (<= i 0) (<= 0 i)), Black: 429#(and (<= i1 0) (<= 0 i1)), 203#true, 459#true, Black: 464#(and (< n3 (+ n2 1)) (<= n2 n3) (<= 1 n2)), Black: 466#(and (<= n1 n2) (<= n3 n2) (<= n2 n3) (<= 1 n2)), Black: 463#(and (<= n2 (+ n3 1)) (<= 1 n2) (<= (+ n3 1) n2)), Black: 208#(and (<= 1 n3) (<= n3 (+ n2 1))), Black: 209#(and (<= 1 n3) (<= n3 n2)), 474#(and (<= 0 n3) (<= n2 n3) (<= n3 n1)), Black: 210#(and (<= 1 n3) (<= n3 n2) (not (= n3 n2))), Black: 212#(and (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 214#(and (<= n1 n3) (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 205#(and (<= n1 n3) (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 206#(and (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 207#(and (<= n3 n2) (<= 0 n3)), 224#true, Black: 480#(and (<= 1 n3) (<= n2 n3) (<= n3 n1)), Black: 482#(and (< n1 (+ n3 1)) (<= 1 n1) (<= n2 n1) (<= n3 n1)), Black: 475#(and (<= 0 n3) (<= n3 n1)), Black: 476#(and (<= 1 n3) (<= n3 (+ n1 1))), Black: 477#(and (<= 1 n3) (<= n3 n1)), Black: 478#(and (< n1 (+ n3 1)) (<= 1 n1) (<= n3 n1)), Black: 227#(and (<= 0 n3) (<= n2 n3) (<= n3 n1)), Black: 228#(and (<= 0 n3) (<= n3 n1)), Black: 229#(and (<= (+ n3 1) n1) (<= 0 n3)), Black: 230#(and (<= 1 n3) (not (= n3 n1)) (< n3 (+ n1 1))), Black: 232#(and (<= (+ n3 1) n1) (<= 0 n3) (<= n2 n3)), 254#(and (<= 1 n1) (<= 0 n3) (<= n2 n1))]) [2021-03-25 09:32:26,222 INFO L384 tUnfolder$Statistics]: this new event has 28 ancestors and is cut-off event [2021-03-25 09:32:26,222 INFO L387 tUnfolder$Statistics]: existing Event has 27 ancestors and is cut-off event [2021-03-25 09:32:26,222 INFO L387 tUnfolder$Statistics]: existing Event has 26 ancestors and is cut-off event [2021-03-25 09:32:26,222 INFO L387 tUnfolder$Statistics]: existing Event has 27 ancestors and is cut-off event [2021-03-25 09:32:26,833 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([148] L34-->thread1EXIT: Formula: (= v_n1_15 0) InVars {} OutVars{n1=v_n1_15} AuxVars[] AssignedVars[n1][89], [10#thread1EXITtrue, Black: 256#(and (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 258#(and (<= n1 n3) (<= 1 n1) (<= n2 n1)), Black: 260#(and (<= 1 n1) (<= 0 n3)), Black: 262#(and (<= 1 n1) (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3)), Black: 264#(and (or (<= 1 n3) (<= 1 n2)) (<= 1 n1) (<= 0 n3)), Black: 268#(and (<= 1 n1) (<= 0 n3) (or (and (<= 1 n3) (< n3 n1)) (<= 2 n2))), Black: 270#(and (or (<= 1 n3) (<= 1 n2)) (<= 1 n1) (<= 0 n3) (<= n2 n1)), Black: 272#(and (<= 0 n3) (<= n2 n1) (or (and (<= 1 n3) (< n3 n1)) (and (< n2 n1) (<= 2 n2)))), Black: 243#(and (<= n1 n3) (<= 0 n1) (<= n2 n1)), 32#L77true, Black: 244#(and (<= 0 n1) (<= 0 n3) (<= n2 n1)), Black: 276#(and (<= 1 n3) (<= n2 n1) (< n3 n1)), Black: 254#(and (<= 1 n1) (<= 0 n3) (<= n2 n1)), 292#true, 40#thread2EXITtrue, 50#thread3EXITtrue, Black: 294#(and (<= n1 n3) (<= 0 n3) (<= n2 n1) (<= n3 n1)), Black: 295#(and (<= n1 n3) (<= 0 n3) (<= n3 n1)), Black: 296#(and (<= n1 n3) (<= 0 n1)), Black: 298#(and (<= 0 n1) (or (<= n1 n3) (<= 1 n2))), Black: 299#(and (<= 1 n1) (or (<= n1 (+ n3 1)) (<= 1 n2))), Black: 300#(and (<= 1 n1) (or (<= n1 n3) (<= 1 n2))), Black: 305#(and (<= n1 n3) (<= 1 n1)), Black: 307#(and (<= 1 n1) (<= 1 n2)), 70#(and (<= i3 0) (<= 0 i3)), Black: 309#(and (<= n1 n3) (<= 1 n1) (<= 1 n2)), Black: 311#(and (<= 1 n1) (<= 2 n2)), Black: 315#(and (<= n1 n3) (< n2 n1) (<= 2 n2)), Black: 83#(and (<= 1 i2) (<= i3 0) (<= 2 i) (<= i 2) (<= i2 1) (<= 0 i3)), Black: 69#(and (<= i 0) (<= 0 i)), Black: 79#(and (<= i3 0) (<= 1 i) (<= i 1) (<= 0 i3)), 95#true, Black: 97#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), Black: 98#(and (<= (+ n3 1) n1) (<= 1 n1) (<= (+ n2 1) n1)), Black: 99#(and (<= (+ n3 1) n1) (<= 1 n1) (= n2 n1)), Black: 103#(and (<= n1 n2) (<= 1 n1) (<= n2 n1) (<= n3 n1)), Black: 112#e2, Black: 117#e1, 120#true, Black: 373#(and (or (and (<= 1 n3) (< n3 n1)) (<= n1 n2)) (<= 1 n1) (<= 0 n3)), Black: 375#(and (or (and (<= 1 n3) (< n3 n1)) (<= n1 n2)) (<= 0 n3) (<= n2 n1) (or (and (<= 1 n3) (< n3 n1)) (<= 2 n2))), Black: 377#(and (or (and (<= 1 n3) (< n3 n1)) (<= n1 n2)) (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 363#(and (<= 1 n1) (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3)), Black: 365#(and (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 349#(and (<= n1 n2) (<= 0 n3) (<= n2 n1) (<= 1 n2)), 390#true, Black: 122#(and (<= n1 n3) (<= 0 n1) (<= n2 0)), Black: 400#(and (<= n1 n2) (<= n1 (+ n3 1)) (<= 1 n1)), Black: 124#(and (<= 1 n1) (<= 0 n3) (<= n2 0)), Black: 125#(and (<= 1 n3) (<= 1 n1) (<= n2 0)), Black: 402#(and (<= n1 n3) (<= n1 n2) (<= 1 n1)), Black: 141#(and (<= n1 n2) (not (= n1 0)) (or (<= n1 0) (= n2 n1)) (< n3 n1)), Black: 394#(and (<= n1 n3) (<= 0 n1)), Black: 395#(and (<= n1 (+ n3 1)) (<= 1 n1)), Black: 396#(and (<= n1 n3) (<= 1 n1)), Black: 398#(and (<= n1 n2) (not (= n1 0))), 410#true, Black: 154#e3, 157#true, Black: 416#(and (<= (+ n2 1) n1) (<= 1 n2)), Black: 418#(and (<= n1 n2) (<= n3 n2) (<= n2 n3) (<= n2 n1) (<= 1 n2)), Black: 412#(and (<= n1 n2) (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 413#(and (<= (+ n1 1) n2) (<= 1 n2) (<= (+ n3 1) n2)), Black: 414#(and (<= 1 n2) (<= (+ n3 1) n2) (= n2 n1)), Black: 415#(and (<= n2 n1) (<= 1 n2)), 426#true, Black: 160#(and (<= 0 n1) (<= n2 n1)), Black: 161#(and (<= 1 n1) (<= (+ n2 1) n1)), Black: 162#(and (<= 1 n1) (= n2 n1)), Black: 170#(and (<= 1 n1) (<= n3 n1) (= n2 n1)), Black: 172#(and (<= n1 n2) (<= 1 n1) (<= 2 n2)), Black: 159#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), 181#true, Black: 452#(and (<= 2 i2) (<= i2 2) (< 2 i) (<= i 3) (<= 1 i3) (<= i3 1) (<= i1 0) (<= 0 i1)), Black: 192#(and (<= 2 i) (<= i1 1) (<= i 2) (<= 1 i1)), Black: 196#(and (<= 2 i2) (<= i2 2) (<= i1 1) (< 2 i) (<= i 3) (<= 1 i1)), Black: 438#(and (<= 1 i) (<= i1 0) (<= 0 i1) (<= i 1)), Black: 184#(and (<= 1 i) (<= i 1)), Black: 442#(and (<= 2 i) (<= i 2) (<= 1 i3) (<= i3 1) (<= i1 0) (<= 0 i1)), Black: 428#(and (<= i 0) (<= 0 i)), Black: 185#(and (<= i1 1) (<= 1 i1)), Black: 186#(and (<= 2 i) (<= i 2)), Black: 429#(and (<= i1 0) (<= 0 i1)), 459#true, 203#true, Black: 464#(and (< n3 (+ n2 1)) (<= n2 n3) (<= 1 n2)), Black: 466#(and (<= n1 n2) (<= n3 n2) (<= n2 n3) (<= 1 n2)), Black: 463#(and (<= n2 (+ n3 1)) (<= 1 n2) (<= (+ n3 1) n2)), 471#true, Black: 208#(and (<= 1 n3) (<= n3 (+ n2 1))), Black: 209#(and (<= 1 n3) (<= n3 n2)), Black: 210#(and (<= 1 n3) (<= n3 n2) (not (= n3 n2))), Black: 212#(and (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 214#(and (<= n1 n3) (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 205#(and (<= n1 n3) (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 206#(and (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 207#(and (<= n3 n2) (<= 0 n3)), 224#true, Black: 480#(and (<= 1 n3) (<= n2 n3) (<= n3 n1)), Black: 482#(and (< n1 (+ n3 1)) (<= 1 n1) (<= n2 n1) (<= n3 n1)), Black: 475#(and (<= 0 n3) (<= n3 n1)), Black: 476#(and (<= 1 n3) (<= n3 (+ n1 1))), Black: 477#(and (<= 1 n3) (<= n3 n1)), Black: 478#(and (< n1 (+ n3 1)) (<= 1 n1) (<= n3 n1)), Black: 227#(and (<= 0 n3) (<= n2 n3) (<= n3 n1)), Black: 228#(and (<= 0 n3) (<= n3 n1)), Black: 229#(and (<= (+ n3 1) n1) (<= 0 n3)), Black: 230#(and (<= 1 n3) (not (= n3 n1)) (< n3 (+ n1 1))), Black: 232#(and (<= (+ n3 1) n1) (<= 0 n3) (<= n2 n3)), 245#(and (<= 0 n1) (<= 0 n3))]) [2021-03-25 09:32:26,833 INFO L384 tUnfolder$Statistics]: this new event has 34 ancestors and is cut-off event [2021-03-25 09:32:26,833 INFO L387 tUnfolder$Statistics]: existing Event has 33 ancestors and is cut-off event [2021-03-25 09:32:26,833 INFO L387 tUnfolder$Statistics]: existing Event has 33 ancestors and is cut-off event [2021-03-25 09:32:26,833 INFO L387 tUnfolder$Statistics]: existing Event has 31 ancestors and is cut-off event [2021-03-25 09:32:26,871 INFO L129 PetriNetUnfolder]: 4849/14732 cut-off events. [2021-03-25 09:32:26,871 INFO L130 PetriNetUnfolder]: For 277471/280784 co-relation queries the response was YES. [2021-03-25 09:32:27,010 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102346 conditions, 14732 events. 4849/14732 cut-off events. For 277471/280784 co-relation queries the response was YES. Maximal size of possible extension queue 997. Compared 180399 event pairs, 990 based on Foata normal form. 813/14790 useless extension candidates. Maximal degree in co-relation 101667. Up to 2785 conditions per place. [2021-03-25 09:32:27,276 INFO L142 LiptonReduction]: Number of co-enabled transitions 7354 [2021-03-25 09:32:45,282 INFO L154 LiptonReduction]: Checked pairs total: 611 [2021-03-25 09:32:45,282 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 09:32:45,282 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 21037 [2021-03-25 09:32:45,282 INFO L480 AbstractCegarLoop]: Abstraction has has 270 places, 769 transitions, 14822 flow [2021-03-25 09:32:45,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 45.375) internal successors, (363), 8 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:32:45,283 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:32:45,283 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] [2021-03-25 09:32:45,283 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-25 09:32:45,283 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:32:45,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:32:45,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1520349217, now seen corresponding path program 1 times [2021-03-25 09:32:45,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:32:45,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964000179] [2021-03-25 09:32:45,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:32:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:32:45,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:32:45,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 09:32:45,314 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-25 09:32:45,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 09:32:45,317 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-03-25 09:32:45,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:32:45,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:32:45,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:32:45,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:32:45,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:32:45,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:32:45,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:32:45,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:32:45,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:32:45,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:32:45,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 09:32:45,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:32:45,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:32:45,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:32:45,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964000179] [2021-03-25 09:32:45,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:32:45,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 09:32:45,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683056886] [2021-03-25 09:32:45,366 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 09:32:45,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:32:45,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 09:32:45,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-03-25 09:32:45,367 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 229 [2021-03-25 09:32:45,367 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 769 transitions, 14822 flow. Second operand has 9 states, 9 states have (on average 45.111111111111114) internal successors, (406), 9 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:32:45,367 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:32:45,367 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 229 [2021-03-25 09:32:45,367 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:32:52,306 INFO L129 PetriNetUnfolder]: 7814/20918 cut-off events. [2021-03-25 09:32:52,307 INFO L130 PetriNetUnfolder]: For 464484/468644 co-relation queries the response was YES. [2021-03-25 09:32:52,660 INFO L84 FinitePrefix]: Finished finitePrefix Result has 158605 conditions, 20918 events. 7814/20918 cut-off events. For 464484/468644 co-relation queries the response was YES. Maximal size of possible extension queue 1209. Compared 249419 event pairs, 1497 based on Foata normal form. 1034/21293 useless extension candidates. Maximal degree in co-relation 157773. Up to 4664 conditions per place. [2021-03-25 09:32:52,748 INFO L132 encePairwiseOnDemand]: 172/229 looper letters, 643 selfloop transitions, 280 changer transitions 10/1002 dead transitions. [2021-03-25 09:32:52,748 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 1002 transitions, 20994 flow [2021-03-25 09:32:52,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 09:32:52,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 09:32:52,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 524 transitions. [2021-03-25 09:32:52,749 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.28602620087336245 [2021-03-25 09:32:52,749 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 524 transitions. [2021-03-25 09:32:52,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 524 transitions. [2021-03-25 09:32:52,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:32:52,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 524 transitions. [2021-03-25 09:32:52,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 65.5) internal successors, (524), 8 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:32:52,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:32:52,752 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:32:52,753 INFO L185 Difference]: Start difference. First operand has 270 places, 769 transitions, 14822 flow. Second operand 8 states and 524 transitions. [2021-03-25 09:32:52,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 1002 transitions, 20994 flow [2021-03-25 09:32:54,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 1002 transitions, 20672 flow, removed 141 selfloop flow, removed 3 redundant places. [2021-03-25 09:32:54,827 INFO L241 Difference]: Finished difference. Result has 278 places, 854 transitions, 17188 flow [2021-03-25 09:32:54,827 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=14613, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=769, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17188, PETRI_PLACES=278, PETRI_TRANSITIONS=854} [2021-03-25 09:32:54,827 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 224 predicate places. [2021-03-25 09:32:54,828 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:32:54,828 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 278 places, 854 transitions, 17188 flow [2021-03-25 09:32:54,828 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 278 places, 854 transitions, 17188 flow [2021-03-25 09:32:54,834 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 278 places, 854 transitions, 17188 flow [2021-03-25 09:32:58,152 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([148] L34-->thread1EXIT: Formula: (= v_n1_15 0) InVars {} OutVars{n1=v_n1_15} AuxVars[] AssignedVars[n1][35], [Black: 500#(and (<= n1 n3) (<= n2 n1) (<= n3 n1) (<= 0 n2)), Black: 506#(and (<= 1 n1) (<= 0 n3) (<= 1 n2)), Black: 508#(and (<= 0 n1) (<= 0 n3) (<= 1 n2)), Black: 510#(and (<= (+ n2 1) n1) (<= 0 n3) (<= 1 n2)), 10#thread1EXITtrue, Black: 256#(and (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 258#(and (<= n1 n3) (<= 1 n1) (<= n2 n1)), Black: 260#(and (<= 1 n1) (<= 0 n3)), Black: 262#(and (<= 1 n1) (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3)), Black: 264#(and (or (<= 1 n3) (<= 1 n2)) (<= 1 n1) (<= 0 n3)), Black: 268#(and (<= 1 n1) (<= 0 n3) (or (and (<= 1 n3) (< n3 n1)) (<= 2 n2))), Black: 270#(and (or (<= 1 n3) (<= 1 n2)) (<= 1 n1) (<= 0 n3) (<= n2 n1)), Black: 272#(and (<= 0 n3) (<= n2 n1) (or (and (<= 1 n3) (< n3 n1)) (and (< n2 n1) (<= 2 n2)))), Black: 243#(and (<= n1 n3) (<= 0 n1) (<= n2 n1)), Black: 244#(and (<= 0 n1) (<= 0 n3) (<= n2 n1)), 32#L77true, Black: 276#(and (<= 1 n3) (<= n2 n1) (< n3 n1)), Black: 254#(and (<= 1 n1) (<= 0 n3) (<= n2 n1)), 292#true, 40#thread2EXITtrue, 50#thread3EXITtrue, Black: 294#(and (<= n1 n3) (<= 0 n3) (<= n2 n1) (<= n3 n1)), Black: 295#(and (<= n1 n3) (<= 0 n3) (<= n3 n1)), Black: 296#(and (<= n1 n3) (<= 0 n1)), Black: 298#(and (<= 0 n1) (or (<= n1 n3) (<= 1 n2))), Black: 299#(and (<= 1 n1) (or (<= n1 (+ n3 1)) (<= 1 n2))), Black: 300#(and (<= 1 n1) (or (<= n1 n3) (<= 1 n2))), Black: 305#(and (<= n1 n3) (<= 1 n1)), Black: 307#(and (<= 1 n1) (<= 1 n2)), 70#(and (<= i3 0) (<= 0 i3)), Black: 309#(and (<= n1 n3) (<= 1 n1) (<= 1 n2)), Black: 311#(and (<= 1 n1) (<= 2 n2)), Black: 315#(and (<= n1 n3) (< n2 n1) (<= 2 n2)), Black: 83#(and (<= 1 i2) (<= i3 0) (<= 2 i) (<= i 2) (<= i2 1) (<= 0 i3)), Black: 69#(and (<= i 0) (<= 0 i)), Black: 79#(and (<= i3 0) (<= 1 i) (<= i 1) (<= 0 i3)), 95#true, Black: 97#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), Black: 98#(and (<= (+ n3 1) n1) (<= 1 n1) (<= (+ n2 1) n1)), Black: 99#(and (<= (+ n3 1) n1) (<= 1 n1) (= n2 n1)), Black: 103#(and (<= n1 n2) (<= 1 n1) (<= n2 n1) (<= n3 n1)), Black: 112#e2, Black: 117#e1, 120#true, Black: 375#(and (or (and (<= 1 n3) (< n3 n1)) (<= n1 n2)) (<= 0 n3) (<= n2 n1) (or (and (<= 1 n3) (< n3 n1)) (<= 2 n2))), Black: 377#(and (or (and (<= 1 n3) (< n3 n1)) (<= n1 n2)) (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 365#(and (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 349#(and (<= n1 n2) (<= 0 n3) (<= n2 n1) (<= 1 n2)), 390#true, Black: 122#(and (<= n1 n3) (<= 0 n1) (<= n2 0)), Black: 124#(and (<= 1 n1) (<= 0 n3) (<= n2 0)), Black: 400#(and (<= n1 n2) (<= n1 (+ n3 1)) (<= 1 n1)), Black: 402#(and (<= n1 n3) (<= n1 n2) (<= 1 n1)), Black: 125#(and (<= 1 n3) (<= 1 n1) (<= n2 0)), Black: 141#(and (<= n1 n2) (not (= n1 0)) (or (<= n1 0) (= n2 n1)) (< n3 n1)), Black: 394#(and (<= n1 n3) (<= 0 n1)), Black: 395#(and (<= n1 (+ n3 1)) (<= 1 n1)), Black: 396#(and (<= n1 n3) (<= 1 n1)), Black: 398#(and (<= n1 n2) (not (= n1 0))), 410#true, Black: 154#e3, 157#true, Black: 416#(and (<= (+ n2 1) n1) (<= 1 n2)), Black: 418#(and (<= n1 n2) (<= n3 n2) (<= n2 n3) (<= n2 n1) (<= 1 n2)), Black: 412#(and (<= n1 n2) (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 413#(and (<= (+ n1 1) n2) (<= 1 n2) (<= (+ n3 1) n2)), Black: 414#(and (<= 1 n2) (<= (+ n3 1) n2) (= n2 n1)), Black: 415#(and (<= n2 n1) (<= 1 n2)), 426#true, Black: 160#(and (<= 0 n1) (<= n2 n1)), Black: 161#(and (<= 1 n1) (<= (+ n2 1) n1)), Black: 162#(and (<= 1 n1) (= n2 n1)), Black: 170#(and (<= 1 n1) (<= n3 n1) (= n2 n1)), Black: 172#(and (<= n1 n2) (<= 1 n1) (<= 2 n2)), Black: 159#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), 181#true, Black: 192#(and (<= 2 i) (<= i1 1) (<= i 2) (<= 1 i1)), Black: 452#(and (<= 2 i2) (<= i2 2) (< 2 i) (<= i 3) (<= 1 i3) (<= i3 1) (<= i1 0) (<= 0 i1)), Black: 196#(and (<= 2 i2) (<= i2 2) (<= i1 1) (< 2 i) (<= i 3) (<= 1 i1)), Black: 438#(and (<= 1 i) (<= i1 0) (<= 0 i1) (<= i 1)), Black: 442#(and (<= 2 i) (<= i 2) (<= 1 i3) (<= i3 1) (<= i1 0) (<= 0 i1)), Black: 184#(and (<= 1 i) (<= i 1)), Black: 428#(and (<= i 0) (<= 0 i)), Black: 185#(and (<= i1 1) (<= 1 i1)), Black: 186#(and (<= 2 i) (<= i 2)), Black: 429#(and (<= i1 0) (<= 0 i1)), 203#true, 459#true, Black: 464#(and (< n3 (+ n2 1)) (<= n2 n3) (<= 1 n2)), Black: 466#(and (<= n1 n2) (<= n3 n2) (<= n2 n3) (<= 1 n2)), Black: 463#(and (<= n2 (+ n3 1)) (<= 1 n2) (<= (+ n3 1) n2)), 471#true, Black: 208#(and (<= 1 n3) (<= n3 (+ n2 1))), Black: 209#(and (<= 1 n3) (<= n3 n2)), Black: 210#(and (<= 1 n3) (<= n3 n2) (not (= n3 n2))), Black: 212#(and (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 214#(and (<= n1 n3) (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 205#(and (<= n1 n3) (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 206#(and (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 207#(and (<= n3 n2) (<= 0 n3)), 224#true, Black: 480#(and (<= 1 n3) (<= n2 n3) (<= n3 n1)), Black: 482#(and (< n1 (+ n3 1)) (<= 1 n1) (<= n2 n1) (<= n3 n1)), Black: 475#(and (<= 0 n3) (<= n3 n1)), Black: 476#(and (<= 1 n3) (<= n3 (+ n1 1))), Black: 477#(and (<= 1 n3) (<= n3 n1)), Black: 478#(and (< n1 (+ n3 1)) (<= 1 n1) (<= n3 n1)), Black: 227#(and (<= 0 n3) (<= n2 n3) (<= n3 n1)), Black: 228#(and (<= 0 n3) (<= n3 n1)), Black: 229#(and (<= (+ n3 1) n1) (<= 0 n3)), Black: 230#(and (<= 1 n3) (not (= n3 n1)) (< n3 (+ n1 1))), Black: 232#(and (<= (+ n3 1) n1) (<= 0 n3) (<= n2 n3)), 245#(and (<= 0 n1) (<= 0 n3)), 502#(and (<= 0 n1) (<= 0 n3) (<= 0 n2))]) [2021-03-25 09:32:58,152 INFO L384 tUnfolder$Statistics]: this new event has 34 ancestors and is cut-off event [2021-03-25 09:32:58,152 INFO L387 tUnfolder$Statistics]: existing Event has 33 ancestors and is cut-off event [2021-03-25 09:32:58,152 INFO L387 tUnfolder$Statistics]: existing Event has 31 ancestors and is cut-off event [2021-03-25 09:32:58,152 INFO L387 tUnfolder$Statistics]: existing Event has 33 ancestors and is cut-off event [2021-03-25 09:32:58,200 INFO L129 PetriNetUnfolder]: 6016/17798 cut-off events. [2021-03-25 09:32:58,200 INFO L130 PetriNetUnfolder]: For 361171/365007 co-relation queries the response was YES. [2021-03-25 09:32:58,559 INFO L84 FinitePrefix]: Finished finitePrefix Result has 128631 conditions, 17798 events. 6016/17798 cut-off events. For 361171/365007 co-relation queries the response was YES. Maximal size of possible extension queue 1225. Compared 221860 event pairs, 1222 based on Foata normal form. 1074/18017 useless extension candidates. Maximal degree in co-relation 127746. Up to 3345 conditions per place. [2021-03-25 09:32:58,781 INFO L142 LiptonReduction]: Number of co-enabled transitions 8432 [2021-03-25 09:33:29,037 INFO L154 LiptonReduction]: Checked pairs total: 1085 [2021-03-25 09:33:29,038 INFO L156 LiptonReduction]: Total number of compositions: 8 [2021-03-25 09:33:29,038 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 34211 [2021-03-25 09:33:29,038 INFO L480 AbstractCegarLoop]: Abstraction has has 278 places, 854 transitions, 17201 flow [2021-03-25 09:33:29,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 45.111111111111114) internal successors, (406), 9 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:33:29,038 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:33:29,039 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] [2021-03-25 09:33:29,039 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-25 09:33:29,039 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:33:29,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:33:29,039 INFO L82 PathProgramCache]: Analyzing trace with hash -731293635, now seen corresponding path program 1 times [2021-03-25 09:33:29,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:33:29,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143465779] [2021-03-25 09:33:29,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:33:29,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:33:29,078 INFO L142 QuantifierPusher]: treesize reduction 19, result has 52.5 percent of original size [2021-03-25 09:33:29,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 09:33:29,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:33:29,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 09:33:29,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:33:29,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 09:33:29,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:33:29,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 09:33:29,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:33:29,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:33:29,128 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:33:29,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 09:33:29,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:33:29,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:33:29,149 INFO L142 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size [2021-03-25 09:33:29,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 09:33:29,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:33:29,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:33:29,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:33:29,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143465779] [2021-03-25 09:33:29,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:33:29,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 09:33:29,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989593569] [2021-03-25 09:33:29,160 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 09:33:29,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:33:29,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 09:33:29,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-03-25 09:33:29,161 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 237 [2021-03-25 09:33:29,161 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 854 transitions, 17201 flow. Second operand has 8 states, 8 states have (on average 45.375) internal successors, (363), 8 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:33:29,161 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:33:29,161 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 237 [2021-03-25 09:33:29,161 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:33:34,883 INFO L129 PetriNetUnfolder]: 6710/17993 cut-off events. [2021-03-25 09:33:34,884 INFO L130 PetriNetUnfolder]: For 440511/445244 co-relation queries the response was YES. [2021-03-25 09:33:35,065 INFO L84 FinitePrefix]: Finished finitePrefix Result has 141729 conditions, 17993 events. 6710/17993 cut-off events. For 440511/445244 co-relation queries the response was YES. Maximal size of possible extension queue 889. Compared 209587 event pairs, 1716 based on Foata normal form. 996/18358 useless extension candidates. Maximal degree in co-relation 141435. Up to 7358 conditions per place. [2021-03-25 09:33:35,289 INFO L132 encePairwiseOnDemand]: 178/237 looper letters, 521 selfloop transitions, 308 changer transitions 29/927 dead transitions. [2021-03-25 09:33:35,289 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 927 transitions, 19823 flow [2021-03-25 09:33:35,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 09:33:35,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 09:33:35,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 717 transitions. [2021-03-25 09:33:35,291 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.27502876869965476 [2021-03-25 09:33:35,291 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 717 transitions. [2021-03-25 09:33:35,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 717 transitions. [2021-03-25 09:33:35,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:33:35,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 717 transitions. [2021-03-25 09:33:35,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 65.18181818181819) internal successors, (717), 11 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:33:35,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 237.0) internal successors, (2844), 12 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:33:35,295 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 237.0) internal successors, (2844), 12 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:33:35,295 INFO L185 Difference]: Start difference. First operand has 278 places, 854 transitions, 17201 flow. Second operand 11 states and 717 transitions. [2021-03-25 09:33:35,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 927 transitions, 19823 flow [2021-03-25 09:33:36,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 927 transitions, 19691 flow, removed 51 selfloop flow, removed 4 redundant places. [2021-03-25 09:33:36,749 INFO L241 Difference]: Finished difference. Result has 287 places, 778 transitions, 16283 flow [2021-03-25 09:33:36,750 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=15219, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=766, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=271, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=16283, PETRI_PLACES=287, PETRI_TRANSITIONS=778} [2021-03-25 09:33:36,750 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 233 predicate places. [2021-03-25 09:33:36,750 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:33:36,750 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 287 places, 778 transitions, 16283 flow [2021-03-25 09:33:36,751 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 287 places, 778 transitions, 16283 flow [2021-03-25 09:33:36,758 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 280 places, 778 transitions, 16283 flow [2021-03-25 09:33:38,224 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([132] L63-->L64: Formula: (or (= v_n1_14 0) (and (not (= v_n1_14 v_n3_12)) (not (< v_n1_14 v_n3_12)))) InVars {n3=v_n3_12, n1=v_n1_14} OutVars{n3=v_n3_12, n1=v_n1_14} AuxVars[] AssignedVars[][308], [Black: 500#(and (<= n1 n3) (<= n2 n1) (<= n3 n1) (<= 0 n2)), Black: 506#(and (<= 1 n1) (<= 0 n3) (<= 1 n2)), Black: 510#(and (<= (+ n2 1) n1) (<= 0 n3) (<= 1 n2)), 516#true, 10#thread1EXITtrue, Black: 522#(and (<= 1 n3) (<= n3 n1)), Black: 523#(and (<= 1 n3) (<= n3 n1) (not (= n3 n1))), Black: 525#(and (<= 1 n3) (<= n2 n3) (<= n3 n1)), Black: 256#(and (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 258#(and (<= n1 n3) (<= 1 n1) (<= n2 n1)), Black: 260#(and (<= 1 n1) (<= 0 n3)), Black: 262#(and (<= 1 n1) (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3)), Black: 264#(and (or (<= 1 n3) (<= 1 n2)) (<= 1 n1) (<= 0 n3)), Black: 268#(and (<= 1 n1) (<= 0 n3) (or (and (<= 1 n3) (< n3 n1)) (<= 2 n2))), Black: 270#(and (or (<= 1 n3) (<= 1 n2)) (<= 1 n1) (<= 0 n3) (<= n2 n1)), Black: 272#(and (<= 0 n3) (<= n2 n1) (or (and (<= 1 n3) (< n3 n1)) (and (< n2 n1) (<= 2 n2)))), Black: 243#(and (<= n1 n3) (<= 0 n1) (<= n2 n1)), 32#L77true, Black: 244#(and (<= 0 n1) (<= 0 n3) (<= n2 n1)), Black: 276#(and (<= 1 n3) (<= n2 n1) (< n3 n1)), Black: 254#(and (<= 1 n1) (<= 0 n3) (<= n2 n1)), 38#L64true, 298#(and (<= 0 n1) (or (<= n1 n3) (<= 1 n2))), 44#L49true, Black: 294#(and (<= n1 n3) (<= 0 n3) (<= n2 n1) (<= n3 n1)), Black: 295#(and (<= n1 n3) (<= 0 n3) (<= n3 n1)), Black: 296#(and (<= n1 n3) (<= 0 n1)), Black: 299#(and (<= 1 n1) (or (<= n1 (+ n3 1)) (<= 1 n2))), 67#true, Black: 300#(and (<= 1 n1) (or (<= n1 n3) (<= 1 n2))), Black: 305#(and (<= n1 n3) (<= 1 n1)), Black: 307#(and (<= 1 n1) (<= 1 n2)), Black: 309#(and (<= n1 n3) (<= 1 n1) (<= 1 n2)), Black: 315#(and (<= n1 n3) (< n2 n1) (<= 2 n2)), Black: 83#(and (<= 1 i2) (<= i3 0) (<= 2 i) (<= i 2) (<= i2 1) (<= 0 i3)), Black: 69#(and (<= i 0) (<= 0 i)), Black: 79#(and (<= i3 0) (<= 1 i) (<= i 1) (<= 0 i3)), 95#true, Black: 97#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), Black: 98#(and (<= (+ n3 1) n1) (<= 1 n1) (<= (+ n2 1) n1)), Black: 99#(and (<= (+ n3 1) n1) (<= 1 n1) (= n2 n1)), Black: 103#(and (<= n1 n2) (<= 1 n1) (<= n2 n1) (<= n3 n1)), Black: 112#e2, Black: 117#e1, 120#true, Black: 375#(and (or (and (<= 1 n3) (< n3 n1)) (<= n1 n2)) (<= 0 n3) (<= n2 n1) (or (and (<= 1 n3) (< n3 n1)) (<= 2 n2))), Black: 377#(and (or (and (<= 1 n3) (< n3 n1)) (<= n1 n2)) (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 365#(and (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 349#(and (<= n1 n2) (<= 0 n3) (<= n2 n1) (<= 1 n2)), 394#(and (<= n1 n3) (<= 0 n1)), Black: 122#(and (<= n1 n3) (<= 0 n1) (<= n2 0)), Black: 400#(and (<= n1 n2) (<= n1 (+ n3 1)) (<= 1 n1)), Black: 124#(and (<= 1 n1) (<= 0 n3) (<= n2 0)), Black: 125#(and (<= 1 n3) (<= 1 n1) (<= n2 0)), Black: 402#(and (<= n1 n3) (<= n1 n2) (<= 1 n1)), Black: 395#(and (<= n1 (+ n3 1)) (<= 1 n1)), Black: 396#(and (<= n1 n3) (<= 1 n1)), 410#true, Black: 154#e3, 157#true, Black: 416#(and (<= (+ n2 1) n1) (<= 1 n2)), Black: 418#(and (<= n1 n2) (<= n3 n2) (<= n2 n3) (<= n2 n1) (<= 1 n2)), Black: 412#(and (<= n1 n2) (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 413#(and (<= (+ n1 1) n2) (<= 1 n2) (<= (+ n3 1) n2)), Black: 414#(and (<= 1 n2) (<= (+ n3 1) n2) (= n2 n1)), Black: 415#(and (<= n2 n1) (<= 1 n2)), Black: 160#(and (<= 0 n1) (<= n2 n1)), Black: 161#(and (<= 1 n1) (<= (+ n2 1) n1)), Black: 162#(and (<= 1 n1) (= n2 n1)), Black: 170#(and (<= 1 n1) (<= n3 n1) (= n2 n1)), Black: 172#(and (<= n1 n2) (<= 1 n1) (<= 2 n2)), Black: 159#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), 181#true, 438#(and (<= 1 i) (<= i1 0) (<= 0 i1) (<= i 1)), Black: 192#(and (<= 2 i) (<= i1 1) (<= i 2) (<= 1 i1)), Black: 452#(and (<= 2 i2) (<= i2 2) (< 2 i) (<= i 3) (<= 1 i3) (<= i3 1) (<= i1 0) (<= 0 i1)), Black: 196#(and (<= 2 i2) (<= i2 2) (<= i1 1) (< 2 i) (<= i 3) (<= 1 i1)), Black: 184#(and (<= 1 i) (<= i 1)), Black: 442#(and (<= 2 i) (<= i 2) (<= 1 i3) (<= i3 1) (<= i1 0) (<= 0 i1)), Black: 185#(and (<= i1 1) (<= 1 i1)), Black: 428#(and (<= i 0) (<= 0 i)), Black: 186#(and (<= 2 i) (<= i 2)), Black: 429#(and (<= i1 0) (<= 0 i1)), 208#(and (<= 1 n3) (<= n3 (+ n2 1))), 466#(and (<= n1 n2) (<= n3 n2) (<= n2 n3) (<= 1 n2)), Black: 464#(and (< n3 (+ n2 1)) (<= n2 n3) (<= 1 n2)), Black: 463#(and (<= n2 (+ n3 1)) (<= 1 n2) (<= (+ n3 1) n2)), 471#true, Black: 209#(and (<= 1 n3) (<= n3 n2)), Black: 210#(and (<= 1 n3) (<= n3 n2) (not (= n3 n2))), Black: 212#(and (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 214#(and (<= n1 n3) (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 205#(and (<= n1 n3) (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 206#(and (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 207#(and (<= n3 n2) (<= 0 n3)), 224#true, Black: 480#(and (<= 1 n3) (<= n2 n3) (<= n3 n1)), Black: 482#(and (< n1 (+ n3 1)) (<= 1 n1) (<= n2 n1) (<= n3 n1)), Black: 475#(and (<= 0 n3) (<= n3 n1)), Black: 476#(and (<= 1 n3) (<= n3 (+ n1 1))), Black: 477#(and (<= 1 n3) (<= n3 n1)), Black: 478#(and (< n1 (+ n3 1)) (<= 1 n1) (<= n3 n1)), Black: 227#(and (<= 0 n3) (<= n2 n3) (<= n3 n1)), Black: 228#(and (<= 0 n3) (<= n3 n1)), Black: 229#(and (<= (+ n3 1) n1) (<= 0 n3)), Black: 232#(and (<= (+ n3 1) n1) (<= 0 n3) (<= n2 n3)), 245#(and (<= 0 n1) (<= 0 n3)), 508#(and (<= 0 n1) (<= 0 n3) (<= 1 n2))]) [2021-03-25 09:33:38,224 INFO L384 tUnfolder$Statistics]: this new event has 24 ancestors and is cut-off event [2021-03-25 09:33:38,224 INFO L387 tUnfolder$Statistics]: existing Event has 24 ancestors and is cut-off event [2021-03-25 09:33:38,224 INFO L387 tUnfolder$Statistics]: existing Event has 24 ancestors and is cut-off event [2021-03-25 09:33:38,224 INFO L387 tUnfolder$Statistics]: existing Event has 24 ancestors and is cut-off event [2021-03-25 09:33:39,690 INFO L129 PetriNetUnfolder]: 4854/14949 cut-off events. [2021-03-25 09:33:39,690 INFO L130 PetriNetUnfolder]: For 322995/326145 co-relation queries the response was YES. [2021-03-25 09:33:40,113 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109609 conditions, 14949 events. 4854/14949 cut-off events. For 322995/326145 co-relation queries the response was YES. Maximal size of possible extension queue 830. Compared 183768 event pairs, 1174 based on Foata normal form. 761/14946 useless extension candidates. Maximal degree in co-relation 108801. Up to 2875 conditions per place. [2021-03-25 09:33:40,310 INFO L142 LiptonReduction]: Number of co-enabled transitions 7106 [2021-03-25 09:34:05,359 INFO L154 LiptonReduction]: Checked pairs total: 564 [2021-03-25 09:34:05,360 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 09:34:05,360 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 28610 [2021-03-25 09:34:05,360 INFO L480 AbstractCegarLoop]: Abstraction has has 280 places, 778 transitions, 16291 flow [2021-03-25 09:34:05,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 45.375) internal successors, (363), 8 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:34:05,361 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:34:05,361 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] [2021-03-25 09:34:05,361 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-25 09:34:05,361 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:34:05,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:34:05,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1133393375, now seen corresponding path program 2 times [2021-03-25 09:34:05,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:34:05,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351949253] [2021-03-25 09:34:05,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:34:05,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:34:05,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:34:05,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:34:05,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:34:05,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 09:34:05,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:34:05,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:34:05,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:34:05,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:34:05,417 INFO L142 QuantifierPusher]: treesize reduction 8, result has 57.9 percent of original size [2021-03-25 09:34:05,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 09:34:05,423 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 09:34:05,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:34:05,431 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 09:34:05,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:34:05,441 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:34:05,441 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:34:05,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:34:05,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351949253] [2021-03-25 09:34:05,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:34:05,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 09:34:05,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554979377] [2021-03-25 09:34:05,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 09:34:05,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:34:05,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 09:34:05,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-25 09:34:05,444 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 242 [2021-03-25 09:34:05,444 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 778 transitions, 16291 flow. Second operand has 8 states, 8 states have (on average 45.375) internal successors, (363), 8 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:34:05,444 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:34:05,444 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 242 [2021-03-25 09:34:05,444 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:34:09,533 INFO L129 PetriNetUnfolder]: 3961/11540 cut-off events. [2021-03-25 09:34:09,533 INFO L130 PetriNetUnfolder]: For 319812/321578 co-relation queries the response was YES. [2021-03-25 09:34:09,629 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94007 conditions, 11540 events. 3961/11540 cut-off events. For 319812/321578 co-relation queries the response was YES. Maximal size of possible extension queue 816. Compared 133784 event pairs, 986 based on Foata normal form. 656/11739 useless extension candidates. Maximal degree in co-relation 93779. Up to 1794 conditions per place. [2021-03-25 09:34:09,675 INFO L132 encePairwiseOnDemand]: 169/242 looper letters, 500 selfloop transitions, 434 changer transitions 3/981 dead transitions. [2021-03-25 09:34:09,675 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 981 transitions, 22880 flow [2021-03-25 09:34:09,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-25 09:34:09,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-25 09:34:09,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 670 transitions. [2021-03-25 09:34:09,677 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2768595041322314 [2021-03-25 09:34:09,677 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 670 transitions. [2021-03-25 09:34:09,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 670 transitions. [2021-03-25 09:34:09,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:34:09,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 670 transitions. [2021-03-25 09:34:09,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 67.0) internal successors, (670), 10 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:34:09,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 242.0) internal successors, (2662), 11 states have internal predecessors, (2662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:34:09,680 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 242.0) internal successors, (2662), 11 states have internal predecessors, (2662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:34:09,680 INFO L185 Difference]: Start difference. First operand has 280 places, 778 transitions, 16291 flow. Second operand 10 states and 670 transitions. [2021-03-25 09:34:09,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 981 transitions, 22880 flow [2021-03-25 09:34:10,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 981 transitions, 21674 flow, removed 296 selfloop flow, removed 13 redundant places. [2021-03-25 09:34:10,841 INFO L241 Difference]: Finished difference. Result has 283 places, 828 transitions, 18891 flow [2021-03-25 09:34:10,842 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=14555, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=715, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=320, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=18891, PETRI_PLACES=283, PETRI_TRANSITIONS=828} [2021-03-25 09:34:10,842 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 229 predicate places. [2021-03-25 09:34:10,842 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:34:10,843 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 283 places, 828 transitions, 18891 flow [2021-03-25 09:34:10,843 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 283 places, 828 transitions, 18891 flow [2021-03-25 09:34:10,851 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 280 places, 828 transitions, 18891 flow [2021-03-25 09:34:12,686 INFO L129 PetriNetUnfolder]: 2805/9943 cut-off events. [2021-03-25 09:34:12,686 INFO L130 PetriNetUnfolder]: For 237701/239224 co-relation queries the response was YES. [2021-03-25 09:34:12,781 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75622 conditions, 9943 events. 2805/9943 cut-off events. For 237701/239224 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 124698 event pairs, 933 based on Foata normal form. 494/9821 useless extension candidates. Maximal degree in co-relation 75459. Up to 1508 conditions per place. [2021-03-25 09:34:13,020 INFO L142 LiptonReduction]: Number of co-enabled transitions 4966 [2021-03-25 09:34:27,578 INFO L154 LiptonReduction]: Checked pairs total: 1834 [2021-03-25 09:34:27,578 INFO L156 LiptonReduction]: Total number of compositions: 14 [2021-03-25 09:34:27,578 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 16736 [2021-03-25 09:34:27,578 INFO L480 AbstractCegarLoop]: Abstraction has has 280 places, 828 transitions, 18916 flow [2021-03-25 09:34:27,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 45.375) internal successors, (363), 8 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:34:27,579 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:34:27,579 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] [2021-03-25 09:34:27,579 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-25 09:34:27,579 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:34:27,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:34:27,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1996062417, now seen corresponding path program 1 times [2021-03-25 09:34:27,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:34:27,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833990607] [2021-03-25 09:34:27,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:34:27,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:34:27,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:34:27,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 09:34:27,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:34:27,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:34:27,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:34:27,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:34:27,625 INFO L142 QuantifierPusher]: treesize reduction 13, result has 61.8 percent of original size [2021-03-25 09:34:27,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 09:34:27,644 INFO L142 QuantifierPusher]: treesize reduction 13, result has 67.5 percent of original size [2021-03-25 09:34:27,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-25 09:34:27,667 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-03-25 09:34:27,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 09:34:27,676 INFO L142 QuantifierPusher]: treesize reduction 20, result has 44.4 percent of original size [2021-03-25 09:34:27,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 09:34:27,690 INFO L142 QuantifierPusher]: treesize reduction 6, result has 72.7 percent of original size [2021-03-25 09:34:27,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 09:34:27,706 INFO L142 QuantifierPusher]: treesize reduction 6, result has 75.0 percent of original size [2021-03-25 09:34:27,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 09:34:27,723 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 09:34:27,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:34:27,739 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-25 09:34:27,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:34:27,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:34:27,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:34:27,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:34:27,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833990607] [2021-03-25 09:34:27,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:34:27,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-03-25 09:34:27,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465256405] [2021-03-25 09:34:27,759 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-25 09:34:27,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:34:27,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-25 09:34:27,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-03-25 09:34:27,760 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 256 [2021-03-25 09:34:27,761 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 828 transitions, 18916 flow. Second operand has 12 states, 12 states have (on average 44.583333333333336) internal successors, (535), 12 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:34:27,761 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:34:27,761 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 256 [2021-03-25 09:34:27,761 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:34:32,114 INFO L129 PetriNetUnfolder]: 3619/10966 cut-off events. [2021-03-25 09:34:32,114 INFO L130 PetriNetUnfolder]: For 310810/312328 co-relation queries the response was YES. [2021-03-25 09:34:32,278 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91431 conditions, 10966 events. 3619/10966 cut-off events. For 310810/312328 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 128323 event pairs, 1313 based on Foata normal form. 442/10991 useless extension candidates. Maximal degree in co-relation 91267. Up to 5246 conditions per place. [2021-03-25 09:34:32,329 INFO L132 encePairwiseOnDemand]: 203/256 looper letters, 648 selfloop transitions, 254 changer transitions 10/956 dead transitions. [2021-03-25 09:34:32,329 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 956 transitions, 23221 flow [2021-03-25 09:34:32,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-03-25 09:34:32,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-03-25 09:34:32,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1086 transitions. [2021-03-25 09:34:32,332 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.22327302631578946 [2021-03-25 09:34:32,332 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1086 transitions. [2021-03-25 09:34:32,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1086 transitions. [2021-03-25 09:34:32,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:34:32,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1086 transitions. [2021-03-25 09:34:32,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 57.1578947368421) internal successors, (1086), 19 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:34:32,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 256.0) internal successors, (5120), 20 states have internal predecessors, (5120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:34:32,338 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 256.0) internal successors, (5120), 20 states have internal predecessors, (5120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:34:32,338 INFO L185 Difference]: Start difference. First operand has 280 places, 828 transitions, 18916 flow. Second operand 19 states and 1086 transitions. [2021-03-25 09:34:32,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 956 transitions, 23221 flow [2021-03-25 09:34:33,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 956 transitions, 23002 flow, removed 101 selfloop flow, removed 5 redundant places. [2021-03-25 09:34:33,789 INFO L241 Difference]: Finished difference. Result has 306 places, 857 transitions, 20301 flow [2021-03-25 09:34:33,790 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=16945, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=759, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=20301, PETRI_PLACES=306, PETRI_TRANSITIONS=857} [2021-03-25 09:34:33,790 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 252 predicate places. [2021-03-25 09:34:33,790 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:34:33,790 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 306 places, 857 transitions, 20301 flow [2021-03-25 09:34:33,790 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 306 places, 857 transitions, 20301 flow [2021-03-25 09:34:33,799 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 306 places, 857 transitions, 20301 flow [2021-03-25 09:34:35,077 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([106] L29-->L30: Formula: (or (= v_n2_2 0) (not (< v_n2_2 v_n1_7))) InVars {n2=v_n2_2, n1=v_n1_7} OutVars{n2=v_n2_2, n1=v_n1_7} AuxVars[] AssignedVars[][516], [Black: 500#(and (<= n1 n3) (<= n2 n1) (<= n3 n1) (<= 0 n2)), Black: 506#(and (<= 1 n1) (<= 0 n3) (<= 1 n2)), Black: 508#(and (<= 0 n1) (<= 0 n3) (<= 1 n2)), Black: 510#(and (<= (+ n2 1) n1) (<= 0 n3) (<= 1 n2)), 7#L30true, 527#(and (<= 1 n3) (<= n2 n3) (<= n3 n1) (not (= n3 n1))), Black: 522#(and (<= 1 n3) (<= n3 n1)), Black: 523#(and (<= 1 n3) (<= n3 n1) (not (= n3 n1))), Black: 525#(and (<= 1 n3) (<= n2 n3) (<= n3 n1)), Black: 258#(and (<= n1 n3) (<= 1 n1) (<= n2 n1)), Black: 260#(and (<= 1 n1) (<= 0 n3)), Black: 262#(and (<= 1 n1) (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3)), 538#(and (<= 0 n3) (<= 0 n2)), Black: 264#(and (or (<= 1 n3) (<= 1 n2)) (<= 1 n1) (<= 0 n3)), Black: 268#(and (<= 1 n1) (<= 0 n3) (or (and (<= 1 n3) (< n3 n1)) (<= 2 n2))), Black: 270#(and (or (<= 1 n3) (<= 1 n2)) (<= 1 n1) (<= 0 n3) (<= n2 n1)), Black: 272#(and (<= 0 n3) (<= n2 n1) (or (and (<= 1 n3) (< n3 n1)) (and (< n2 n1) (<= 2 n2)))), Black: 243#(and (<= n1 n3) (<= 0 n1) (<= n2 n1)), 32#L77true, Black: 244#(and (<= 0 n1) (<= 0 n3) (<= n2 n1)), Black: 276#(and (<= 1 n3) (<= n2 n1) (< n3 n1)), Black: 245#(and (<= 0 n1) (<= 0 n3)), 292#true, 38#L64true, Black: 545#(and (<= n1 n3) (<= 0 n3) (<= 1 n2)), Black: 547#(and (<= n1 n3) (<= n2 n3) (<= 1 n2)), 40#thread2EXITtrue, Black: 549#(and (<= n1 n3) (<= 1 n3) (<= 1 n2)), Black: 539#(and (<= 0 n3) (<= 1 n2)), Black: 540#(and (<= 1 n3) (<= 1 n2)), Black: 541#(and (<= n2 n3) (<= 1 n2)), Black: 543#(and (<= n1 n3) (<= 0 n3) (<= 0 n2)), 559#true, Black: 294#(and (<= n1 n3) (<= 0 n3) (<= n2 n1) (<= n3 n1)), Black: 295#(and (<= n1 n3) (<= 0 n3) (<= n3 n1)), Black: 296#(and (<= n1 n3) (<= 0 n1)), Black: 298#(and (<= 0 n1) (or (<= n1 n3) (<= 1 n2))), Black: 299#(and (<= 1 n1) (or (<= n1 (+ n3 1)) (<= 1 n2))), 67#true, Black: 300#(and (<= 1 n1) (or (<= n1 n3) (<= 1 n2))), Black: 305#(and (<= n1 n3) (<= 1 n1)), Black: 307#(and (<= 1 n1) (<= 1 n2)), Black: 309#(and (<= n1 n3) (<= 1 n1) (<= 1 n2)), Black: 315#(and (<= n1 n3) (< n2 n1) (<= 2 n2)), Black: 576#(and (<= n1 n2) (<= n1 (+ n3 1)) (<= (+ n3 1) n1) (or (<= 1 n3) (<= n2 (+ n3 n1)))), Black: 580#(and (<= 1 n3) (= n3 n1) (<= n3 n2)), Black: 584#(and (= n3 n1) (<= 1 n1) (<= n2 n1) (<= n1 (+ n2 1))), Black: 586#(and (<= n1 n2) (<= 1 n3) (<= 1 n1)), Black: 561#(and (<= n1 n3) (<= 0 n1) (<= n2 n1) (<= n3 n1)), Black: 564#(and (<= n1 (+ n3 1)) (<= (+ n3 1) n1) (<= 1 n1) (<= n1 (+ n2 1))), Black: 565#(and (= n3 n1) (<= 1 n1) (<= n1 (+ n2 1))), Black: 566#(and (or (<= 1 n3) (<= n2 n3)) (<= 1 n1) (<= n1 (+ n2 1))), Black: 567#(and (<= n1 n2) (<= 1 n1) (or (<= 1 n3) (<= n2 (+ n3 n1)))), Black: 568#(and (<= n1 n2) (<= 1 n1) (or (<= (+ n2 1) (+ n3 n1)) (<= 2 n3))), Black: 569#(and (<= 1 n3) (<= 1 n2)), Black: 570#(and (<= 1 n3) (< n3 n2)), Black: 574#(and (<= n1 (+ n3 1)) (<= (+ n3 1) n1) (or (<= 1 n3) (<= n2 n3)) (<= 1 n1) (<= n1 (+ n2 1))), 345#(and (<= 1 n1) (<= 0 n3) (<= n2 n1)), Black: 83#(and (<= 1 i2) (<= i3 0) (<= 2 i) (<= i 2) (<= i2 1) (<= 0 i3)), Black: 69#(and (<= i 0) (<= 0 i)), Black: 79#(and (<= i3 0) (<= 1 i) (<= i 1) (<= 0 i3)), 95#true, Black: 97#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), Black: 98#(and (<= (+ n3 1) n1) (<= 1 n1) (<= (+ n2 1) n1)), Black: 112#e2, Black: 117#e1, 120#true, Black: 375#(and (or (and (<= 1 n3) (< n3 n1)) (<= n1 n2)) (<= 0 n3) (<= n2 n1) (or (and (<= 1 n3) (< n3 n1)) (<= 2 n2))), Black: 377#(and (or (and (<= 1 n3) (< n3 n1)) (<= n1 n2)) (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 365#(and (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 349#(and (<= n1 n2) (<= 0 n3) (<= n2 n1) (<= 1 n2)), 390#true, Black: 122#(and (<= n1 n3) (<= 0 n1) (<= n2 0)), Black: 124#(and (<= 1 n1) (<= 0 n3) (<= n2 0)), Black: 402#(and (<= n1 n3) (<= n1 n2) (<= 1 n1)), Black: 125#(and (<= 1 n3) (<= 1 n1) (<= n2 0)), Black: 394#(and (<= n1 n3) (<= 0 n1)), Black: 395#(and (<= n1 (+ n3 1)) (<= 1 n1)), Black: 396#(and (<= n1 n3) (<= 1 n1)), 410#true, Black: 154#e3, 157#true, Black: 416#(and (<= (+ n2 1) n1) (<= 1 n2)), Black: 418#(and (<= n1 n2) (<= n3 n2) (<= n2 n3) (<= n2 n1) (<= 1 n2)), Black: 412#(and (<= n1 n2) (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 413#(and (<= (+ n1 1) n2) (<= 1 n2) (<= (+ n3 1) n2)), Black: 414#(and (<= 1 n2) (<= (+ n3 1) n2) (= n2 n1)), Black: 415#(and (<= n2 n1) (<= 1 n2)), 426#true, Black: 160#(and (<= 0 n1) (<= n2 n1)), Black: 161#(and (<= 1 n1) (<= (+ n2 1) n1)), Black: 162#(and (<= 1 n1) (= n2 n1)), Black: 172#(and (<= n1 n2) (<= 1 n1) (<= 2 n2)), Black: 159#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), Black: 192#(and (<= 2 i) (<= i1 1) (<= i 2) (<= 1 i1)), Black: 438#(and (<= 1 i) (<= i1 0) (<= 0 i1) (<= i 1)), Black: 184#(and (<= 1 i) (<= i 1)), Black: 442#(and (<= 2 i) (<= i 2) (<= 1 i3) (<= i3 1) (<= i1 0) (<= 0 i1)), Black: 428#(and (<= i 0) (<= 0 i)), Black: 429#(and (<= i1 0) (<= 0 i1)), 459#true, 203#true, Black: 464#(and (< n3 (+ n2 1)) (<= n2 n3) (<= 1 n2)), Black: 466#(and (<= n1 n2) (<= n3 n2) (<= n2 n3) (<= 1 n2)), Black: 463#(and (<= n2 (+ n3 1)) (<= 1 n2) (<= (+ n3 1) n2)), Black: 208#(and (<= 1 n3) (<= n3 (+ n2 1))), Black: 209#(and (<= 1 n3) (<= n3 n2)), Black: 210#(and (<= 1 n3) (<= n3 n2) (not (= n3 n2))), Black: 212#(and (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 214#(and (<= n1 n3) (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 205#(and (<= n1 n3) (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 206#(and (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 207#(and (<= n3 n2) (<= 0 n3)), 480#(and (<= 1 n3) (<= n2 n3) (<= n3 n1)), 224#true, Black: 482#(and (< n1 (+ n3 1)) (<= 1 n1) (<= n2 n1) (<= n3 n1)), Black: 475#(and (<= 0 n3) (<= n3 n1)), Black: 476#(and (<= 1 n3) (<= n3 (+ n1 1))), Black: 477#(and (<= 1 n3) (<= n3 n1)), Black: 478#(and (< n1 (+ n3 1)) (<= 1 n1) (<= n3 n1)), Black: 227#(and (<= 0 n3) (<= n2 n3) (<= n3 n1)), Black: 228#(and (<= 0 n3) (<= n3 n1)), Black: 229#(and (<= (+ n3 1) n1) (<= 0 n3)), Black: 232#(and (<= (+ n3 1) n1) (<= 0 n3) (<= n2 n3)), 502#(and (<= 0 n1) (<= 0 n3) (<= 0 n2)), 254#(and (<= 1 n1) (<= 0 n3) (<= n2 n1))]) [2021-03-25 09:34:35,077 INFO L384 tUnfolder$Statistics]: this new event has 22 ancestors and is not cut-off event [2021-03-25 09:34:35,077 INFO L387 tUnfolder$Statistics]: existing Event has 24 ancestors and is not cut-off event [2021-03-25 09:34:35,077 INFO L387 tUnfolder$Statistics]: existing Event has 25 ancestors and is not cut-off event [2021-03-25 09:34:35,077 INFO L387 tUnfolder$Statistics]: existing Event has 22 ancestors and is not cut-off event [2021-03-25 09:34:35,790 INFO L129 PetriNetUnfolder]: 2602/9384 cut-off events. [2021-03-25 09:34:35,790 INFO L130 PetriNetUnfolder]: For 240185/241454 co-relation queries the response was YES. [2021-03-25 09:34:35,884 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73133 conditions, 9384 events. 2602/9384 cut-off events. For 240185/241454 co-relation queries the response was YES. Maximal size of possible extension queue 734. Compared 116980 event pairs, 853 based on Foata normal form. 381/9227 useless extension candidates. Maximal degree in co-relation 72696. Up to 1273 conditions per place. [2021-03-25 09:34:35,997 INFO L142 LiptonReduction]: Number of co-enabled transitions 4818 [2021-03-25 09:34:50,115 INFO L154 LiptonReduction]: Checked pairs total: 335 [2021-03-25 09:34:50,115 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 09:34:50,115 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 16325 [2021-03-25 09:34:50,115 INFO L480 AbstractCegarLoop]: Abstraction has has 306 places, 857 transitions, 20307 flow [2021-03-25 09:34:50,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 44.583333333333336) internal successors, (535), 12 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:34:50,116 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:34:50,116 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] [2021-03-25 09:34:50,116 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-25 09:34:50,116 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:34:50,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:34:50,116 INFO L82 PathProgramCache]: Analyzing trace with hash 475336560, now seen corresponding path program 1 times [2021-03-25 09:34:50,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:34:50,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716163846] [2021-03-25 09:34:50,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:34:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:34:50,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:34:50,258 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2021-03-25 09:34:50,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 09:34:50,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:34:50,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 09:34:50,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:34:50,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:34:50,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:34:50,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:34:50,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:34:50,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:34:50,332 INFO L142 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size [2021-03-25 09:34:50,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 09:34:50,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:34:50,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-25 09:34:50,364 INFO L142 QuantifierPusher]: treesize reduction 15, result has 48.3 percent of original size [2021-03-25 09:34:50,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 09:34:50,382 INFO L142 QuantifierPusher]: treesize reduction 19, result has 48.6 percent of original size [2021-03-25 09:34:50,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 09:34:50,403 INFO L142 QuantifierPusher]: treesize reduction 15, result has 57.1 percent of original size [2021-03-25 09:34:50,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 09:34:50,426 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:34:50,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 09:34:50,452 INFO L142 QuantifierPusher]: treesize reduction 6, result has 72.7 percent of original size [2021-03-25 09:34:50,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 09:34:50,470 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-03-25 09:34:50,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:34:50,471 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:34:50,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:34:50,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:34:50,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716163846] [2021-03-25 09:34:50,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:34:50,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-03-25 09:34:50,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561382678] [2021-03-25 09:34:50,472 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-25 09:34:50,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:34:50,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-25 09:34:50,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-03-25 09:34:50,473 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 261 [2021-03-25 09:34:50,473 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 857 transitions, 20307 flow. Second operand has 13 states, 13 states have (on average 44.46153846153846) internal successors, (578), 13 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:34:50,473 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:34:50,473 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 261 [2021-03-25 09:34:50,473 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:34:56,059 INFO L129 PetriNetUnfolder]: 4008/12631 cut-off events. [2021-03-25 09:34:56,059 INFO L130 PetriNetUnfolder]: For 372514/373764 co-relation queries the response was YES. [2021-03-25 09:34:56,174 INFO L84 FinitePrefix]: Finished finitePrefix Result has 107491 conditions, 12631 events. 4008/12631 cut-off events. For 372514/373764 co-relation queries the response was YES. Maximal size of possible extension queue 858. Compared 153199 event pairs, 1110 based on Foata normal form. 343/12518 useless extension candidates. Maximal degree in co-relation 106965. Up to 2145 conditions per place. [2021-03-25 09:34:56,225 INFO L132 encePairwiseOnDemand]: 172/261 looper letters, 595 selfloop transitions, 647 changer transitions 4/1290 dead transitions. [2021-03-25 09:34:56,226 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 1290 transitions, 32014 flow [2021-03-25 09:34:56,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-03-25 09:34:56,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-03-25 09:34:56,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1413 transitions. [2021-03-25 09:34:56,228 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.22557471264367815 [2021-03-25 09:34:56,228 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1413 transitions. [2021-03-25 09:34:56,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1413 transitions. [2021-03-25 09:34:56,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:34:56,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1413 transitions. [2021-03-25 09:34:56,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 58.875) internal successors, (1413), 24 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:34:56,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 261.0) internal successors, (6525), 25 states have internal predecessors, (6525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:34:56,234 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 261.0) internal successors, (6525), 25 states have internal predecessors, (6525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:34:56,234 INFO L185 Difference]: Start difference. First operand has 306 places, 857 transitions, 20307 flow. Second operand 24 states and 1413 transitions. [2021-03-25 09:34:56,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 1290 transitions, 32014 flow [2021-03-25 09:34:57,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 1290 transitions, 31500 flow, removed 243 selfloop flow, removed 2 redundant places. [2021-03-25 09:34:57,892 INFO L241 Difference]: Finished difference. Result has 345 places, 1102 transitions, 28213 flow [2021-03-25 09:34:57,893 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=19933, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=857, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=427, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=28213, PETRI_PLACES=345, PETRI_TRANSITIONS=1102} [2021-03-25 09:34:57,893 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 291 predicate places. [2021-03-25 09:34:57,893 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:34:57,893 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 345 places, 1102 transitions, 28213 flow [2021-03-25 09:34:57,893 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 345 places, 1102 transitions, 28213 flow [2021-03-25 09:34:57,902 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 345 places, 1102 transitions, 28213 flow [2021-03-25 09:35:00,500 INFO L129 PetriNetUnfolder]: 3006/11231 cut-off events. [2021-03-25 09:35:00,500 INFO L130 PetriNetUnfolder]: For 338420/339987 co-relation queries the response was YES. [2021-03-25 09:35:00,774 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92356 conditions, 11231 events. 3006/11231 cut-off events. For 338420/339987 co-relation queries the response was YES. Maximal size of possible extension queue 809. Compared 145098 event pairs, 996 based on Foata normal form. 439/11017 useless extension candidates. Maximal degree in co-relation 91764. Up to 1622 conditions per place. [2021-03-25 09:35:00,931 INFO L142 LiptonReduction]: Number of co-enabled transitions 5724 [2021-03-25 09:35:15,378 INFO L154 LiptonReduction]: Checked pairs total: 2390 [2021-03-25 09:35:15,378 INFO L156 LiptonReduction]: Total number of compositions: 16 [2021-03-25 09:35:15,378 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 17485 [2021-03-25 09:35:15,379 INFO L480 AbstractCegarLoop]: Abstraction has has 345 places, 1102 transitions, 28240 flow [2021-03-25 09:35:15,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 44.46153846153846) internal successors, (578), 13 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:35:15,379 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:35:15,379 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] [2021-03-25 09:35:15,379 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-25 09:35:15,379 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:35:15,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:35:15,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1005855552, now seen corresponding path program 1 times [2021-03-25 09:35:15,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:35:15,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020296345] [2021-03-25 09:35:15,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:35:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:35:15,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:35:15,411 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 09:35:15,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:35:15,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 09:35:15,434 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:35:15,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:35:15,443 INFO L142 QuantifierPusher]: treesize reduction 17, result has 60.5 percent of original size [2021-03-25 09:35:15,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 09:35:15,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:35:15,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 09:35:15,472 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-03-25 09:35:15,472 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 09:35:15,481 INFO L142 QuantifierPusher]: treesize reduction 21, result has 32.3 percent of original size [2021-03-25 09:35:15,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:35:15,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:35:15,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:35:15,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:35:15,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 09:35:15,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:35:15,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:35:15,528 INFO L142 QuantifierPusher]: treesize reduction 6, result has 66.7 percent of original size [2021-03-25 09:35:15,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 09:35:15,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:35:15,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:35:15,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:35:15,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020296345] [2021-03-25 09:35:15,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:35:15,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-03-25 09:35:15,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536408654] [2021-03-25 09:35:15,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-25 09:35:15,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:35:15,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-25 09:35:15,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-03-25 09:35:15,541 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 277 [2021-03-25 09:35:15,542 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 1102 transitions, 28240 flow. Second operand has 13 states, 13 states have (on average 44.46153846153846) internal successors, (578), 13 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:35:15,542 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:35:15,542 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 277 [2021-03-25 09:35:15,542 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:35:21,987 INFO L129 PetriNetUnfolder]: 4097/13056 cut-off events. [2021-03-25 09:35:21,987 INFO L130 PetriNetUnfolder]: For 452904/454499 co-relation queries the response was YES. [2021-03-25 09:35:22,313 INFO L84 FinitePrefix]: Finished finitePrefix Result has 118026 conditions, 13056 events. 4097/13056 cut-off events. For 452904/454499 co-relation queries the response was YES. Maximal size of possible extension queue 892. Compared 160025 event pairs, 1598 based on Foata normal form. 192/12727 useless extension candidates. Maximal degree in co-relation 117466. Up to 6932 conditions per place. [2021-03-25 09:35:22,373 INFO L132 encePairwiseOnDemand]: 214/277 looper letters, 990 selfloop transitions, 195 changer transitions 9/1238 dead transitions. [2021-03-25 09:35:22,373 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 1238 transitions, 33870 flow [2021-03-25 09:35:22,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-25 09:35:22,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-03-25 09:35:22,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1042 transitions. [2021-03-25 09:35:22,375 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2089851584436422 [2021-03-25 09:35:22,375 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1042 transitions. [2021-03-25 09:35:22,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1042 transitions. [2021-03-25 09:35:22,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:35:22,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1042 transitions. [2021-03-25 09:35:22,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 57.888888888888886) internal successors, (1042), 18 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:35:22,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 277.0) internal successors, (5263), 19 states have internal predecessors, (5263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:35:22,380 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 277.0) internal successors, (5263), 19 states have internal predecessors, (5263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:35:22,380 INFO L185 Difference]: Start difference. First operand has 345 places, 1102 transitions, 28240 flow. Second operand 18 states and 1042 transitions. [2021-03-25 09:35:22,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 1238 transitions, 33870 flow [2021-03-25 09:35:24,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 1238 transitions, 33160 flow, removed 317 selfloop flow, removed 2 redundant places. [2021-03-25 09:35:24,979 INFO L241 Difference]: Finished difference. Result has 371 places, 1152 transitions, 29542 flow [2021-03-25 09:35:24,980 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=27605, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=926, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=29542, PETRI_PLACES=371, PETRI_TRANSITIONS=1152} [2021-03-25 09:35:24,980 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 317 predicate places. [2021-03-25 09:35:24,980 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:35:24,980 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 371 places, 1152 transitions, 29542 flow [2021-03-25 09:35:24,980 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 371 places, 1152 transitions, 29542 flow [2021-03-25 09:35:24,990 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 371 places, 1152 transitions, 29542 flow [2021-03-25 09:35:27,819 INFO L129 PetriNetUnfolder]: 3022/11447 cut-off events. [2021-03-25 09:35:27,819 INFO L130 PetriNetUnfolder]: For 343903/345423 co-relation queries the response was YES. [2021-03-25 09:35:27,979 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94328 conditions, 11447 events. 3022/11447 cut-off events. For 343903/345423 co-relation queries the response was YES. Maximal size of possible extension queue 840. Compared 148908 event pairs, 1015 based on Foata normal form. 463/11306 useless extension candidates. Maximal degree in co-relation 93716. Up to 1608 conditions per place. [2021-03-25 09:35:28,136 INFO L142 LiptonReduction]: Number of co-enabled transitions 5910 [2021-03-25 09:36:03,054 INFO L154 LiptonReduction]: Checked pairs total: 3880 [2021-03-25 09:36:03,054 INFO L156 LiptonReduction]: Total number of compositions: 28 [2021-03-25 09:36:03,055 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 38075 [2021-03-25 09:36:03,055 INFO L480 AbstractCegarLoop]: Abstraction has has 370 places, 1151 transitions, 29586 flow [2021-03-25 09:36:03,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 44.46153846153846) internal successors, (578), 13 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:36:03,055 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:36:03,055 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] [2021-03-25 09:36:03,055 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-25 09:36:03,055 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:36:03,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:36:03,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1737873232, now seen corresponding path program 1 times [2021-03-25 09:36:03,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:36:03,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879789507] [2021-03-25 09:36:03,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:36:03,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:36:03,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:36:03,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:36:03,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:36:03,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:36:03,100 INFO L142 QuantifierPusher]: treesize reduction 7, result has 75.0 percent of original size [2021-03-25 09:36:03,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 09:36:03,114 INFO L142 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size [2021-03-25 09:36:03,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-25 09:36:03,129 INFO L142 QuantifierPusher]: treesize reduction 7, result has 75.9 percent of original size [2021-03-25 09:36:03,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 09:36:03,133 INFO L142 QuantifierPusher]: treesize reduction 28, result has 49.1 percent of original size [2021-03-25 09:36:03,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-25 09:36:03,138 INFO L142 QuantifierPusher]: treesize reduction 7, result has 81.6 percent of original size [2021-03-25 09:36:03,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-25 09:36:03,151 INFO L142 QuantifierPusher]: treesize reduction 12, result has 36.8 percent of original size [2021-03-25 09:36:03,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:36:03,154 INFO L142 QuantifierPusher]: treesize reduction 12, result has 36.8 percent of original size [2021-03-25 09:36:03,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:36:03,161 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-03-25 09:36:03,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 09:36:03,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:36:03,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:36:03,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:36:03,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879789507] [2021-03-25 09:36:03,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:36:03,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 09:36:03,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571052408] [2021-03-25 09:36:03,171 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 09:36:03,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:36:03,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 09:36:03,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-03-25 09:36:03,172 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 305 [2021-03-25 09:36:03,172 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 1151 transitions, 29586 flow. Second operand has 9 states, 9 states have (on average 45.111111111111114) internal successors, (406), 9 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:36:03,172 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:36:03,172 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 305 [2021-03-25 09:36:03,173 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:36:09,025 INFO L129 PetriNetUnfolder]: 3223/10499 cut-off events. [2021-03-25 09:36:09,025 INFO L130 PetriNetUnfolder]: For 376049/377112 co-relation queries the response was YES. [2021-03-25 09:36:09,135 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96472 conditions, 10499 events. 3223/10499 cut-off events. For 376049/377112 co-relation queries the response was YES. Maximal size of possible extension queue 720. Compared 124646 event pairs, 877 based on Foata normal form. 391/10496 useless extension candidates. Maximal degree in co-relation 96059. Up to 1875 conditions per place. [2021-03-25 09:36:09,175 INFO L132 encePairwiseOnDemand]: 227/305 looper letters, 714 selfloop transitions, 485 changer transitions 16/1259 dead transitions. [2021-03-25 09:36:09,175 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 1259 transitions, 34389 flow [2021-03-25 09:36:09,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 09:36:09,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 09:36:09,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 582 transitions. [2021-03-25 09:36:09,177 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.23852459016393443 [2021-03-25 09:36:09,177 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 582 transitions. [2021-03-25 09:36:09,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 582 transitions. [2021-03-25 09:36:09,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:36:09,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 582 transitions. [2021-03-25 09:36:09,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 72.75) internal successors, (582), 8 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:36:09,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 305.0) internal successors, (2745), 9 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:36:09,180 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 305.0) internal successors, (2745), 9 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:36:09,180 INFO L185 Difference]: Start difference. First operand has 370 places, 1151 transitions, 29586 flow. Second operand 8 states and 582 transitions. [2021-03-25 09:36:09,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 1259 transitions, 34389 flow [2021-03-25 09:36:11,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 1259 transitions, 33930 flow, removed 198 selfloop flow, removed 4 redundant places. [2021-03-25 09:36:11,424 INFO L241 Difference]: Finished difference. Result has 377 places, 1114 transitions, 30113 flow [2021-03-25 09:36:11,424 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=26617, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1055, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=419, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=30113, PETRI_PLACES=377, PETRI_TRANSITIONS=1114} [2021-03-25 09:36:11,424 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 323 predicate places. [2021-03-25 09:36:11,424 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:36:11,425 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 377 places, 1114 transitions, 30113 flow [2021-03-25 09:36:11,425 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 377 places, 1114 transitions, 30113 flow [2021-03-25 09:36:11,437 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 377 places, 1114 transitions, 30113 flow [2021-03-25 09:36:13,869 INFO L129 PetriNetUnfolder]: 2325/9102 cut-off events. [2021-03-25 09:36:13,869 INFO L130 PetriNetUnfolder]: For 306333/307656 co-relation queries the response was YES. [2021-03-25 09:36:13,999 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78538 conditions, 9102 events. 2325/9102 cut-off events. For 306333/307656 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 114666 event pairs, 811 based on Foata normal form. 334/8973 useless extension candidates. Maximal degree in co-relation 78075. Up to 1177 conditions per place. [2021-03-25 09:36:14,227 INFO L142 LiptonReduction]: Number of co-enabled transitions 5016 [2021-03-25 09:36:34,631 INFO L154 LiptonReduction]: Checked pairs total: 4506 [2021-03-25 09:36:34,631 INFO L156 LiptonReduction]: Total number of compositions: 28 [2021-03-25 09:36:34,632 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 23208 [2021-03-25 09:36:34,632 INFO L480 AbstractCegarLoop]: Abstraction has has 376 places, 1113 transitions, 30164 flow [2021-03-25 09:36:34,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 45.111111111111114) internal successors, (406), 9 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:36:34,632 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:36:34,632 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] [2021-03-25 09:36:34,632 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-25 09:36:34,633 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:36:34,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:36:34,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1194776388, now seen corresponding path program 1 times [2021-03-25 09:36:34,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:36:34,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335803149] [2021-03-25 09:36:34,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:36:34,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:36:34,660 INFO L142 QuantifierPusher]: treesize reduction 22, result has 63.3 percent of original size [2021-03-25 09:36:34,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-03-25 09:36:34,684 INFO L142 QuantifierPusher]: treesize reduction 3, result has 84.2 percent of original size [2021-03-25 09:36:34,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 09:36:34,687 INFO L142 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size [2021-03-25 09:36:34,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 09:36:34,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:36:34,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 09:36:34,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:36:34,706 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 09:36:34,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:36:34,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:36:34,728 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 09:36:34,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:36:34,736 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 09:36:34,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:36:34,745 INFO L142 QuantifierPusher]: treesize reduction 12, result has 36.8 percent of original size [2021-03-25 09:36:34,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:36:34,746 INFO L142 QuantifierPusher]: treesize reduction 12, result has 36.8 percent of original size [2021-03-25 09:36:34,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:36:34,755 INFO L142 QuantifierPusher]: treesize reduction 13, result has 35.0 percent of original size [2021-03-25 09:36:34,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:36:34,764 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-03-25 09:36:34,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:36:34,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:36:34,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:36:34,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:36:34,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335803149] [2021-03-25 09:36:34,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:36:34,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-25 09:36:34,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303188785] [2021-03-25 09:36:34,765 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 09:36:34,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:36:34,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 09:36:34,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-03-25 09:36:34,767 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 333 [2021-03-25 09:36:34,767 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 1113 transitions, 30164 flow. Second operand has 10 states, 10 states have (on average 44.8) internal successors, (448), 10 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:36:34,768 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:36:34,768 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 333 [2021-03-25 09:36:34,768 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:36:41,345 INFO L129 PetriNetUnfolder]: 3211/10678 cut-off events. [2021-03-25 09:36:41,345 INFO L130 PetriNetUnfolder]: For 403555/404358 co-relation queries the response was YES. [2021-03-25 09:36:41,478 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100486 conditions, 10678 events. 3211/10678 cut-off events. For 403555/404358 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 128100 event pairs, 981 based on Foata normal form. 286/10570 useless extension candidates. Maximal degree in co-relation 100030. Up to 1875 conditions per place. [2021-03-25 09:36:41,522 INFO L132 encePairwiseOnDemand]: 265/333 looper letters, 644 selfloop transitions, 532 changer transitions 25/1244 dead transitions. [2021-03-25 09:36:41,522 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 1244 transitions, 35195 flow [2021-03-25 09:36:41,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-25 09:36:41,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-25 09:36:41,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 850 transitions. [2021-03-25 09:36:41,524 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.19635019635019635 [2021-03-25 09:36:41,524 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 850 transitions. [2021-03-25 09:36:41,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 850 transitions. [2021-03-25 09:36:41,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:36:41,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 850 transitions. [2021-03-25 09:36:41,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 65.38461538461539) internal successors, (850), 13 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:36:41,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 333.0) internal successors, (4662), 14 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:36:41,528 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 333.0) internal successors, (4662), 14 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:36:41,528 INFO L185 Difference]: Start difference. First operand has 376 places, 1113 transitions, 30164 flow. Second operand 13 states and 850 transitions. [2021-03-25 09:36:41,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 1244 transitions, 35195 flow [2021-03-25 09:36:44,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 1244 transitions, 35055 flow, removed 57 selfloop flow, removed 3 redundant places. [2021-03-25 09:36:44,115 INFO L241 Difference]: Finished difference. Result has 390 places, 1110 transitions, 31368 flow [2021-03-25 09:36:44,116 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=29357, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1095, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=501, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=578, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=31368, PETRI_PLACES=390, PETRI_TRANSITIONS=1110} [2021-03-25 09:36:44,116 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 336 predicate places. [2021-03-25 09:36:44,116 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:36:44,116 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 390 places, 1110 transitions, 31368 flow [2021-03-25 09:36:44,117 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 390 places, 1110 transitions, 31368 flow [2021-03-25 09:36:44,131 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 389 places, 1110 transitions, 31368 flow [2021-03-25 09:36:47,085 INFO L129 PetriNetUnfolder]: 2339/9280 cut-off events. [2021-03-25 09:36:47,085 INFO L130 PetriNetUnfolder]: For 323253/324536 co-relation queries the response was YES. [2021-03-25 09:36:47,252 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80673 conditions, 9280 events. 2339/9280 cut-off events. For 323253/324536 co-relation queries the response was YES. Maximal size of possible extension queue 678. Compared 117813 event pairs, 815 based on Foata normal form. 286/9077 useless extension candidates. Maximal degree in co-relation 80212. Up to 1215 conditions per place. [2021-03-25 09:36:47,389 INFO L142 LiptonReduction]: Number of co-enabled transitions 5060 [2021-03-25 09:37:00,660 INFO L154 LiptonReduction]: Checked pairs total: 1508 [2021-03-25 09:37:00,660 INFO L156 LiptonReduction]: Total number of compositions: 10 [2021-03-25 09:37:00,660 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 16544 [2021-03-25 09:37:00,661 INFO L480 AbstractCegarLoop]: Abstraction has has 389 places, 1110 transitions, 31386 flow [2021-03-25 09:37:00,661 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 44.8) internal successors, (448), 10 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:37:00,661 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:37:00,661 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] [2021-03-25 09:37:00,661 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-25 09:37:00,661 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:37:00,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:37:00,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1643811828, now seen corresponding path program 1 times [2021-03-25 09:37:00,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:37:00,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334281031] [2021-03-25 09:37:00,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:37:00,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:37:00,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:37:00,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:37:00,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:37:00,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:37:00,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:37:00,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:37:00,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:37:00,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:37:00,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:37:00,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:37:00,716 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 09:37:00,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:37:00,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:37:00,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334281031] [2021-03-25 09:37:00,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:37:00,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 09:37:00,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842772210] [2021-03-25 09:37:00,724 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 09:37:00,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:37:00,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 09:37:00,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-25 09:37:00,725 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 343 [2021-03-25 09:37:00,727 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 1110 transitions, 31386 flow. Second operand has 8 states, 8 states have (on average 324.875) internal successors, (2599), 8 states have internal predecessors, (2599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:37:00,727 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:37:00,727 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 343 [2021-03-25 09:37:00,727 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:37:04,932 INFO L129 PetriNetUnfolder]: 2484/9672 cut-off events. [2021-03-25 09:37:04,932 INFO L130 PetriNetUnfolder]: For 334700/335988 co-relation queries the response was YES. [2021-03-25 09:37:05,050 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84530 conditions, 9672 events. 2484/9672 cut-off events. For 334700/335988 co-relation queries the response was YES. Maximal size of possible extension queue 671. Compared 121790 event pairs, 921 based on Foata normal form. 309/9460 useless extension candidates. Maximal degree in co-relation 84031. Up to 1250 conditions per place. [2021-03-25 09:37:05,081 INFO L132 encePairwiseOnDemand]: 330/343 looper letters, 19 selfloop transitions, 18 changer transitions 209/1117 dead transitions. [2021-03-25 09:37:05,082 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 1117 transitions, 31392 flow [2021-03-25 09:37:05,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-25 09:37:05,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-25 09:37:05,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3273 transitions. [2021-03-25 09:37:05,084 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9542274052478135 [2021-03-25 09:37:05,084 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3273 transitions. [2021-03-25 09:37:05,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3273 transitions. [2021-03-25 09:37:05,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:37:05,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3273 transitions. [2021-03-25 09:37:05,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 327.3) internal successors, (3273), 10 states have internal predecessors, (3273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:37:05,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 343.0) internal successors, (3773), 11 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:37:05,091 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 343.0) internal successors, (3773), 11 states have internal predecessors, (3773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:37:05,091 INFO L185 Difference]: Start difference. First operand has 389 places, 1110 transitions, 31386 flow. Second operand 10 states and 3273 transitions. [2021-03-25 09:37:05,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 1117 transitions, 31392 flow [2021-03-25 09:37:07,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 1117 transitions, 31192 flow, removed 69 selfloop flow, removed 4 redundant places. [2021-03-25 09:37:07,316 INFO L241 Difference]: Finished difference. Result has 398 places, 905 transitions, 24562 flow [2021-03-25 09:37:07,317 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=343, PETRI_DIFFERENCE_MINUEND_FLOW=31055, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1090, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=24562, PETRI_PLACES=398, PETRI_TRANSITIONS=905} [2021-03-25 09:37:07,317 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 344 predicate places. [2021-03-25 09:37:07,317 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:37:07,317 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 398 places, 905 transitions, 24562 flow [2021-03-25 09:37:07,317 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 398 places, 905 transitions, 24562 flow [2021-03-25 09:37:07,326 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 393 places, 905 transitions, 24562 flow [2021-03-25 09:37:09,204 INFO L129 PetriNetUnfolder]: 2008/7878 cut-off events. [2021-03-25 09:37:09,204 INFO L130 PetriNetUnfolder]: For 273100/274238 co-relation queries the response was YES. [2021-03-25 09:37:09,294 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69330 conditions, 7878 events. 2008/7878 cut-off events. For 273100/274238 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 96391 event pairs, 694 based on Foata normal form. 251/7708 useless extension candidates. Maximal degree in co-relation 69122. Up to 1113 conditions per place. [2021-03-25 09:37:09,395 INFO L142 LiptonReduction]: Number of co-enabled transitions 4106 [2021-03-25 09:37:19,076 INFO L154 LiptonReduction]: Checked pairs total: 143 [2021-03-25 09:37:19,077 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 09:37:19,077 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11760 [2021-03-25 09:37:19,077 INFO L480 AbstractCegarLoop]: Abstraction has has 393 places, 905 transitions, 24564 flow [2021-03-25 09:37:19,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 324.875) internal successors, (2599), 8 states have internal predecessors, (2599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:37:19,077 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:37:19,077 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] [2021-03-25 09:37:19,078 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-25 09:37:19,078 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:37:19,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:37:19,078 INFO L82 PathProgramCache]: Analyzing trace with hash 304434154, now seen corresponding path program 1 times [2021-03-25 09:37:19,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:37:19,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690319236] [2021-03-25 09:37:19,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:37:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:37:19,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:37:19,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:37:19,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:37:19,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:37:19,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:37:19,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 09:37:19,111 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 09:37:19,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:37:19,118 INFO L142 QuantifierPusher]: treesize reduction 10, result has 47.4 percent of original size [2021-03-25 09:37:19,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 09:37:19,126 INFO L142 QuantifierPusher]: treesize reduction 19, result has 32.1 percent of original size [2021-03-25 09:37:19,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 09:37:19,139 INFO L142 QuantifierPusher]: treesize reduction 15, result has 46.4 percent of original size [2021-03-25 09:37:19,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 09:37:19,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:37:19,151 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:37:19,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:37:19,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690319236] [2021-03-25 09:37:19,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:37:19,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 09:37:19,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155017969] [2021-03-25 09:37:19,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 09:37:19,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:37:19,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 09:37:19,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-03-25 09:37:19,154 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 344 [2021-03-25 09:37:19,154 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 905 transitions, 24564 flow. Second operand has 9 states, 9 states have (on average 45.111111111111114) internal successors, (406), 9 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:37:19,154 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:37:19,154 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 344 [2021-03-25 09:37:19,154 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:37:23,587 INFO L129 PetriNetUnfolder]: 2924/9812 cut-off events. [2021-03-25 09:37:23,587 INFO L130 PetriNetUnfolder]: For 390699/391634 co-relation queries the response was YES. [2021-03-25 09:37:23,705 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94176 conditions, 9812 events. 2924/9812 cut-off events. For 390699/391634 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 116486 event pairs, 986 based on Foata normal form. 183/9634 useless extension candidates. Maximal degree in co-relation 93967. Up to 2251 conditions per place. [2021-03-25 09:37:23,742 INFO L132 encePairwiseOnDemand]: 277/344 looper letters, 538 selfloop transitions, 422 changer transitions 90/1097 dead transitions. [2021-03-25 09:37:23,742 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 1097 transitions, 31532 flow [2021-03-25 09:37:23,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-25 09:37:23,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-25 09:37:23,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 828 transitions. [2021-03-25 09:37:23,744 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.1851520572450805 [2021-03-25 09:37:23,744 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 828 transitions. [2021-03-25 09:37:23,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 828 transitions. [2021-03-25 09:37:23,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:37:23,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 828 transitions. [2021-03-25 09:37:23,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 63.69230769230769) internal successors, (828), 13 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:37:23,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 344.0) internal successors, (4816), 14 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:37:23,747 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 344.0) internal successors, (4816), 14 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:37:23,747 INFO L185 Difference]: Start difference. First operand has 393 places, 905 transitions, 24564 flow. Second operand 13 states and 828 transitions. [2021-03-25 09:37:23,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 1097 transitions, 31532 flow [2021-03-25 09:37:25,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 1097 transitions, 30776 flow, removed 285 selfloop flow, removed 18 redundant places. [2021-03-25 09:37:25,877 INFO L241 Difference]: Finished difference. Result has 397 places, 881 transitions, 24783 flow [2021-03-25 09:37:25,878 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=23632, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=895, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=386, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=24783, PETRI_PLACES=397, PETRI_TRANSITIONS=881} [2021-03-25 09:37:25,878 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 343 predicate places. [2021-03-25 09:37:25,878 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:37:25,878 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 397 places, 881 transitions, 24783 flow [2021-03-25 09:37:25,878 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 397 places, 881 transitions, 24783 flow [2021-03-25 09:37:25,886 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 392 places, 881 transitions, 24783 flow [2021-03-25 09:37:27,033 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([106] L29-->L30: Formula: (or (= v_n2_2 0) (not (< v_n2_2 v_n1_7))) InVars {n2=v_n2_2, n1=v_n1_7} OutVars{n2=v_n2_2, n1=v_n1_7} AuxVars[] AssignedVars[][85], [Black: 500#(and (<= n1 n3) (<= n2 n1) (<= n3 n1) (<= 0 n2)), Black: 755#(and (<= 1 i) (<= i 1)), Black: 506#(and (<= 1 n1) (<= 0 n3) (<= 1 n2)), Black: 508#(and (<= 0 n1) (<= 0 n3) (<= 1 n2)), Black: 763#(and (<= 1 i2) (<= 2 i) (<= i 2) (<= i2 1)), Black: 510#(and (<= (+ n2 1) n1) (<= 0 n3) (<= 1 n2)), 7#L30true, 776#(and (<= 0 n3) (<= n2 n3)), 527#(and (<= 1 n3) (<= n2 n3) (<= n3 n1) (not (= n3 n1))), Black: 522#(and (<= 1 n3) (<= n3 n1)), Black: 523#(and (<= 1 n3) (<= n3 n1) (not (= n3 n1))), Black: 525#(and (<= 1 n3) (<= n2 n3) (<= n3 n1)), Black: 785#(and (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 258#(and (<= n1 n3) (<= 1 n1) (<= n2 n1)), Black: 787#(and (<= 1 n3) (< n3 (+ n2 1)) (<= n2 n3)), Black: 260#(and (<= 1 n1) (<= 0 n3)), Black: 775#(and (<= n1 n3) (<= 0 n3) (<= n2 n3)), 538#(and (<= 0 n3) (<= 0 n2)), Black: 264#(and (or (<= 1 n3) (<= 1 n2)) (<= 1 n1) (<= 0 n3)), Black: 268#(and (<= 1 n1) (<= 0 n3) (or (and (<= 1 n3) (< n3 n1)) (<= 2 n2))), Black: 777#(<= 0 n3), Black: 270#(and (or (<= 1 n3) (<= 1 n2)) (<= 1 n1) (<= 0 n3) (<= n2 n1)), Black: 778#(and (<= n3 n2) (<= 0 n3)), Black: 272#(and (<= 0 n3) (<= n2 n1) (or (and (<= 1 n3) (< n3 n1)) (and (< n2 n1) (<= 2 n2)))), Black: 779#(and (<= 0 n3) (<= (+ n3 1) n2)), Black: 780#(and (<= 1 n3) (< n3 (+ n2 1))), Black: 781#(and (<= 1 n3) (< n3 (+ n2 1)) (not (= n3 n2))), 32#L77true, Black: 244#(and (<= 0 n1) (<= 0 n3) (<= n2 n1)), Black: 783#(and (<= n1 n3) (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 276#(and (<= 1 n3) (<= n2 n1) (< n3 n1)), Black: 245#(and (<= 0 n1) (<= 0 n3)), 292#true, 38#L64true, Black: 545#(and (<= n1 n3) (<= 0 n3) (<= 1 n2)), Black: 547#(and (<= n1 n3) (<= n2 n3) (<= 1 n2)), 40#thread2EXITtrue, Black: 549#(and (<= n1 n3) (<= 1 n3) (<= 1 n2)), Black: 539#(and (<= 0 n3) (<= 1 n2)), Black: 540#(and (<= 1 n3) (<= 1 n2)), Black: 541#(and (<= n2 n3) (<= 1 n2)), Black: 543#(and (<= n1 n3) (<= 0 n3) (<= 0 n2)), 559#true, Black: 294#(and (<= n1 n3) (<= 0 n3) (<= n2 n1) (<= n3 n1)), Black: 295#(and (<= n1 n3) (<= 0 n3) (<= n3 n1)), Black: 296#(and (<= n1 n3) (<= 0 n1)), Black: 298#(and (<= 0 n1) (or (<= n1 n3) (<= 1 n2))), 67#true, Black: 299#(and (<= 1 n1) (or (<= n1 (+ n3 1)) (<= 1 n2))), Black: 300#(and (<= 1 n1) (or (<= n1 n3) (<= 1 n2))), Black: 305#(and (<= n1 n3) (<= 1 n1)), Black: 307#(and (<= 1 n1) (<= 1 n2)), Black: 309#(and (<= n1 n3) (<= 1 n1) (<= 1 n2)), Black: 315#(and (<= n1 n3) (< n2 n1) (<= 2 n2)), Black: 584#(and (= n3 n1) (<= 1 n1) (<= n2 n1) (<= n1 (+ n2 1))), Black: 561#(and (<= n1 n3) (<= 0 n1) (<= n2 n1) (<= n3 n1)), Black: 564#(and (<= n1 (+ n3 1)) (<= (+ n3 1) n1) (<= 1 n1) (<= n1 (+ n2 1))), Black: 565#(and (= n3 n1) (<= 1 n1) (<= n1 (+ n2 1))), Black: 566#(and (or (<= 1 n3) (<= n2 n3)) (<= 1 n1) (<= n1 (+ n2 1))), Black: 569#(and (<= 1 n3) (<= 1 n2)), Black: 570#(and (<= 1 n3) (< n3 n2)), Black: 574#(and (<= n1 (+ n3 1)) (<= (+ n3 1) n1) (or (<= 1 n3) (<= n2 n3)) (<= 1 n1) (<= n1 (+ n2 1))), 345#(and (<= 1 n1) (<= 0 n3) (<= n2 n1)), Black: 83#(and (<= 1 i2) (<= i3 0) (<= 2 i) (<= i 2) (<= i2 1) (<= 0 i3)), Black: 69#(and (<= i 0) (<= 0 i)), Black: 79#(and (<= i3 0) (<= 1 i) (<= i 1) (<= 0 i3)), 95#true, Black: 98#(and (<= (+ n3 1) n1) (<= 1 n1) (<= (+ n2 1) n1)), Black: 112#e2, Black: 117#e1, 120#true, 639#(and (<= 1 n3) (or (<= n3 n2) (= n2 0)) (<= n2 n3) (<= n2 n1)), Black: 377#(and (or (and (<= 1 n3) (< n3 n1)) (<= n1 n2)) (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 365#(and (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 349#(and (<= n1 n2) (<= 0 n3) (<= n2 n1) (<= 1 n2)), 390#true, Black: 608#(and (<= 1 n3) (<= 0 n1) (or (<= n3 n2) (= n2 0))), Black: 641#(and (<= 1 n3) (or (<= 1 n2) (= n2 0)) (<= n2 n3) (<= n2 n1)), Black: 610#(and (= n3 0) (<= 0 n1) (<= n3 n2)), Black: 643#(and (<= 1 n3) (or (<= 1 n2) (= n2 0)) (<= n2 n1)), Black: 611#(and (= n3 0) (<= 1 n1) (<= n3 n2)), Black: 612#(and (= n3 0) (<= 1 n1) (<= (+ n3 1) n2)), Black: 645#(and (= n3 0) (<= n3 n2) (<= n2 n3) (<= n2 n1)), Black: 621#(and (<= n1 n3) (<= 1 n3) (or (<= n3 n2) (= n2 0)) (<= n2 n1)), Black: 623#(and (= n3 0) (<= n3 n2) (<= n2 n1)), Black: 625#(and (<= n1 n3) (or (<= 1 n2) (= n2 0)) (<= n2 n1)), Black: 627#(and (<= n1 n3) (<= 1 n3) (or (<= 1 n2) (= n2 0)) (<= n2 n1)), Black: 122#(and (<= n1 n3) (<= 0 n1) (<= n2 0)), Black: 124#(and (<= 1 n1) (<= 0 n3) (<= n2 0)), Black: 125#(and (<= 1 n3) (<= 1 n1) (<= n2 0)), Black: 633#(and (<= 1 n3) (<= 0 n1) (or (<= 1 n2) (= n2 0))), Black: 402#(and (<= n1 n3) (<= n1 n2) (<= 1 n1)), Black: 394#(and (<= n1 n3) (<= 0 n1)), Black: 635#(and (or (<= 1 n2) (= n2 0)) (<= n2 n3) (<= n2 n1)), Black: 395#(and (<= n1 (+ n3 1)) (<= 1 n1)), Black: 637#(and (<= 1 n3) (or (<= n3 n2) (= n2 0)) (<= n2 n1)), Black: 396#(and (<= n1 n3) (<= 1 n1)), 665#true, 410#true, Black: 154#e3, 157#true, Black: 416#(and (<= (+ n2 1) n1) (<= 1 n2)), Black: 418#(and (<= n1 n2) (<= n3 n2) (<= n2 n3) (<= n2 n1) (<= 1 n2)), Black: 412#(and (<= n1 n2) (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 413#(and (<= (+ n1 1) n2) (<= 1 n2) (<= (+ n3 1) n2)), Black: 414#(and (<= 1 n2) (<= (+ n3 1) n2) (= n2 n1)), Black: 415#(and (<= n2 n1) (<= 1 n2)), 426#true, Black: 160#(and (<= 0 n1) (<= n2 n1)), Black: 161#(and (<= 1 n1) (<= (+ n2 1) n1)), Black: 162#(and (<= 1 n1) (= n2 n1)), Black: 674#(and (<= 1 n3) (<= n3 n2)), Black: 675#(and (<= n3 (+ n2 1)) (<= 2 n3)), Black: 172#(and (<= n1 n2) (<= 1 n1) (<= 2 n2)), Black: 676#(and (<= n3 n2) (<= 2 n3)), Black: 677#(and (< n2 (+ n3 1)) (<= n3 n2) (<= 2 n2)), Black: 159#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), Black: 679#(and (<= n1 n2) (<= 0 n3) (<= n2 n3) (<= n3 n1)), Black: 668#(and (<= n1 n3) (<= 0 n3) (<= n2 n1)), Black: 669#(and (<= n1 n3) (<= 0 n3) (<= n2 n3)), Black: 685#(and (<= n1 n3) (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 670#(and (< n1 (+ n3 1)) (<= 0 n3) (<= n2 n3) (<= n3 n1)), Black: 687#(and (<= n1 n3) (<= n3 (+ n2 1)) (<= n2 n3) (<= 2 n3)), 704#(and (<= 0 n1) (<= 0 n3) (<= 0 n2)), Black: 192#(and (<= 2 i) (<= i1 1) (<= i 2) (<= 1 i1)), Black: 438#(and (<= 1 i) (<= i1 0) (<= 0 i1) (<= i 1)), Black: 442#(and (<= 2 i) (<= i 2) (<= 1 i3) (<= i3 1) (<= i1 0) (<= 0 i1)), Black: 184#(and (<= 1 i) (<= i 1)), Black: 428#(and (<= i 0) (<= 0 i)), Black: 429#(and (<= i1 0) (<= 0 i1)), 459#true, 203#true, Black: 710#(and (<= n1 n2) (<= 0 n1) (<= 0 n3)), Black: 712#(and (<= n1 n2) (<= 0 n1) (<= 0 n3) (<= 1 n2)), Black: 714#(and (< n1 (+ n2 1)) (<= 1 n1) (<= 0 n3)), Black: 464#(and (< n3 (+ n2 1)) (<= n2 n3) (<= 1 n2)), Black: 716#(and (<= 0 n1) (<= 0 n3) (<= 1 n2)), Black: 718#(and (<= 1 n1) (<= 0 n3) (<= 1 n2)), Black: 466#(and (<= n1 n2) (<= n3 n2) (<= n2 n3) (<= 1 n2)), Black: 463#(and (<= n2 (+ n3 1)) (<= 1 n2) (<= (+ n3 1) n2)), Black: 208#(and (<= 1 n3) (<= n3 (+ n2 1))), Black: 209#(and (<= 1 n3) (<= n3 n2)), Black: 210#(and (<= 1 n3) (<= n3 n2) (not (= n3 n2))), Black: 212#(and (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 214#(and (<= n1 n3) (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 207#(and (<= n3 n2) (<= 0 n3)), 224#true, Black: 482#(and (< n1 (+ n3 1)) (<= 1 n1) (<= n2 n1) (<= n3 n1)), 741#(and (<= 1 n3) (<= 1 n1) (<= 0 n2)), Black: 475#(and (<= 0 n3) (<= n3 n1)), Black: 476#(and (<= 1 n3) (<= n3 (+ n1 1))), Black: 477#(and (<= 1 n3) (<= n3 n1)), Black: 478#(and (< n1 (+ n3 1)) (<= 1 n1) (<= n3 n1)), Black: 730#(and (<= n1 n2) (<= 1 n3) (<= 0 n1)), Black: 227#(and (<= 0 n3) (<= n2 n3) (<= n3 n1)), Black: 228#(and (<= 0 n3) (<= n3 n1)), Black: 731#(and (<= 1 n3) (<= 0 n1) (<= 0 n2)), Black: 732#(and (<= 0 n1) (<= 0 n2)), Black: 229#(and (<= (+ n3 1) n1) (<= 0 n3)), Black: 733#(and (= n3 0) (<= 0 n1) (<= 0 n2)), 752#true, Black: 232#(and (<= (+ n3 1) n1) (<= 0 n3) (<= n2 n3)), 502#(and (<= 0 n1) (<= 0 n3) (<= 0 n2)), 254#(and (<= 1 n1) (<= 0 n3) (<= n2 n1))]) [2021-03-25 09:37:27,033 INFO L384 tUnfolder$Statistics]: this new event has 25 ancestors and is cut-off event [2021-03-25 09:37:27,033 INFO L387 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2021-03-25 09:37:27,033 INFO L387 tUnfolder$Statistics]: existing Event has 25 ancestors and is cut-off event [2021-03-25 09:37:27,033 INFO L387 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2021-03-25 09:37:27,800 INFO L129 PetriNetUnfolder]: 2023/8022 cut-off events. [2021-03-25 09:37:27,800 INFO L130 PetriNetUnfolder]: For 293759/294916 co-relation queries the response was YES. [2021-03-25 09:37:27,892 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71432 conditions, 8022 events. 2023/8022 cut-off events. For 293759/294916 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 98830 event pairs, 720 based on Foata normal form. 251/7845 useless extension candidates. Maximal degree in co-relation 71082. Up to 1158 conditions per place. [2021-03-25 09:37:28,176 INFO L142 LiptonReduction]: Number of co-enabled transitions 4042 [2021-03-25 09:37:32,221 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 09:37:32,221 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 09:37:32,221 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6343 [2021-03-25 09:37:32,222 INFO L480 AbstractCegarLoop]: Abstraction has has 392 places, 881 transitions, 24783 flow [2021-03-25 09:37:32,222 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 45.111111111111114) internal successors, (406), 9 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:37:32,222 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:37:32,222 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] [2021-03-25 09:37:32,222 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-25 09:37:32,222 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:37:32,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:37:32,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1364867408, now seen corresponding path program 1 times [2021-03-25 09:37:32,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:37:32,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301167544] [2021-03-25 09:37:32,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:37:32,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:37:32,238 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:37:32,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 09:37:32,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:37:32,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 09:37:32,255 INFO L142 QuantifierPusher]: treesize reduction 17, result has 60.5 percent of original size [2021-03-25 09:37:32,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 09:37:32,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:37:32,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 09:37:32,266 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-03-25 09:37:32,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 09:37:32,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:37:32,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 09:37:32,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:37:32,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:37:32,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:37:32,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:37:32,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:37:32,311 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:37:32,320 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:37:32,321 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:37:32,332 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-03-25 09:37:32,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 09:37:32,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:37:32,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:37:32,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:37:32,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301167544] [2021-03-25 09:37:32,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:37:32,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-25 09:37:32,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539423841] [2021-03-25 09:37:32,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 09:37:32,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:37:32,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 09:37:32,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-03-25 09:37:32,347 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 344 [2021-03-25 09:37:32,347 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 881 transitions, 24783 flow. Second operand has 11 states, 11 states have (on average 44.72727272727273) internal successors, (492), 11 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:37:32,348 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:37:32,348 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 344 [2021-03-25 09:37:32,348 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:37:36,398 INFO L129 PetriNetUnfolder]: 2739/9198 cut-off events. [2021-03-25 09:37:36,398 INFO L130 PetriNetUnfolder]: For 389714/390728 co-relation queries the response was YES. [2021-03-25 09:37:36,512 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89496 conditions, 9198 events. 2739/9198 cut-off events. For 389714/390728 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 107757 event pairs, 1251 based on Foata normal form. 106/8968 useless extension candidates. Maximal degree in co-relation 89112. Up to 5188 conditions per place. [2021-03-25 09:37:36,550 INFO L132 encePairwiseOnDemand]: 324/344 looper letters, 785 selfloop transitions, 23 changer transitions 58/913 dead transitions. [2021-03-25 09:37:36,550 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 913 transitions, 27313 flow [2021-03-25 09:37:36,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 09:37:36,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 09:37:36,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 629 transitions. [2021-03-25 09:37:36,551 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.1662262156448203 [2021-03-25 09:37:36,551 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 629 transitions. [2021-03-25 09:37:36,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 629 transitions. [2021-03-25 09:37:36,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:37:36,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 629 transitions. [2021-03-25 09:37:36,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 57.18181818181818) internal successors, (629), 11 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:37:36,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 344.0) internal successors, (4128), 12 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:37:36,553 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 344.0) internal successors, (4128), 12 states have internal predecessors, (4128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:37:36,554 INFO L185 Difference]: Start difference. First operand has 392 places, 881 transitions, 24783 flow. Second operand 11 states and 629 transitions. [2021-03-25 09:37:36,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 913 transitions, 27313 flow [2021-03-25 09:37:38,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 913 transitions, 26734 flow, removed 133 selfloop flow, removed 10 redundant places. [2021-03-25 09:37:38,717 INFO L241 Difference]: Finished difference. Result has 395 places, 847 transitions, 23379 flow [2021-03-25 09:37:38,718 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=344, PETRI_DIFFERENCE_MINUEND_FLOW=24165, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=879, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=856, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=23379, PETRI_PLACES=395, PETRI_TRANSITIONS=847} [2021-03-25 09:37:38,718 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 341 predicate places. [2021-03-25 09:37:38,718 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:37:38,718 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 395 places, 847 transitions, 23379 flow [2021-03-25 09:37:38,719 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 395 places, 847 transitions, 23379 flow [2021-03-25 09:37:38,727 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 382 places, 847 transitions, 23379 flow [2021-03-25 09:37:40,552 INFO L129 PetriNetUnfolder]: 1970/7779 cut-off events. [2021-03-25 09:37:40,552 INFO L130 PetriNetUnfolder]: For 280170/281363 co-relation queries the response was YES. [2021-03-25 09:37:40,645 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68856 conditions, 7779 events. 1970/7779 cut-off events. For 280170/281363 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 95177 event pairs, 697 based on Foata normal form. 280/7637 useless extension candidates. Maximal degree in co-relation 68444. Up to 1145 conditions per place. [2021-03-25 09:37:40,752 INFO L142 LiptonReduction]: Number of co-enabled transitions 3866 [2021-03-25 09:37:47,240 INFO L154 LiptonReduction]: Checked pairs total: 462 [2021-03-25 09:37:47,241 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 09:37:47,241 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8523 [2021-03-25 09:37:47,241 INFO L480 AbstractCegarLoop]: Abstraction has has 382 places, 847 transitions, 23383 flow [2021-03-25 09:37:47,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 44.72727272727273) internal successors, (492), 11 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:37:47,241 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:37:47,241 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] [2021-03-25 09:37:47,242 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-25 09:37:47,242 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:37:47,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:37:47,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1944741097, now seen corresponding path program 1 times [2021-03-25 09:37:47,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:37:47,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020393097] [2021-03-25 09:37:47,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:37:47,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:37:47,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:37:47,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:37:47,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:37:47,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:37:47,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:37:47,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:37:47,274 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:37:47,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:37:47,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:37:47,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:37:47,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:37:47,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:37:47,299 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 09:37:47,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:37:47,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:37:47,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020393097] [2021-03-25 09:37:47,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:37:47,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-25 09:37:47,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935805199] [2021-03-25 09:37:47,310 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 09:37:47,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:37:47,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 09:37:47,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-25 09:37:47,312 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 346 [2021-03-25 09:37:47,313 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 847 transitions, 23383 flow. Second operand has 9 states, 9 states have (on average 327.8888888888889) internal successors, (2951), 9 states have internal predecessors, (2951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:37:47,313 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:37:47,313 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 346 [2021-03-25 09:37:47,313 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:37:50,843 INFO L129 PetriNetUnfolder]: 2109/8304 cut-off events. [2021-03-25 09:37:50,843 INFO L130 PetriNetUnfolder]: For 303177/304539 co-relation queries the response was YES. [2021-03-25 09:37:51,044 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74306 conditions, 8304 events. 2109/8304 cut-off events. For 303177/304539 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 101152 event pairs, 687 based on Foata normal form. 309/8211 useless extension candidates. Maximal degree in co-relation 73818. Up to 1259 conditions per place. [2021-03-25 09:37:51,071 INFO L132 encePairwiseOnDemand]: 332/346 looper letters, 23 selfloop transitions, 26 changer transitions 123/865 dead transitions. [2021-03-25 09:37:51,071 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 865 transitions, 23586 flow [2021-03-25 09:37:51,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-25 09:37:51,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-03-25 09:37:51,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 5279 transitions. [2021-03-25 09:37:51,075 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9535765895953757 [2021-03-25 09:37:51,075 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 5279 transitions. [2021-03-25 09:37:51,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 5279 transitions. [2021-03-25 09:37:51,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:37:51,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 5279 transitions. [2021-03-25 09:37:51,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 329.9375) internal successors, (5279), 16 states have internal predecessors, (5279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:37:51,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 346.0) internal successors, (5882), 17 states have internal predecessors, (5882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:37:51,084 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 346.0) internal successors, (5882), 17 states have internal predecessors, (5882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:37:51,084 INFO L185 Difference]: Start difference. First operand has 382 places, 847 transitions, 23383 flow. Second operand 16 states and 5279 transitions. [2021-03-25 09:37:51,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 865 transitions, 23586 flow [2021-03-25 09:37:52,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 865 transitions, 23430 flow, removed 36 selfloop flow, removed 11 redundant places. [2021-03-25 09:37:52,637 INFO L241 Difference]: Finished difference. Result has 389 places, 734 transitions, 19484 flow [2021-03-25 09:37:52,637 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=346, PETRI_DIFFERENCE_MINUEND_FLOW=23227, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=847, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=825, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=19484, PETRI_PLACES=389, PETRI_TRANSITIONS=734} [2021-03-25 09:37:52,638 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 335 predicate places. [2021-03-25 09:37:52,638 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:37:52,638 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 389 places, 734 transitions, 19484 flow [2021-03-25 09:37:52,638 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 389 places, 734 transitions, 19484 flow [2021-03-25 09:37:52,644 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 384 places, 734 transitions, 19484 flow [2021-03-25 09:37:54,234 INFO L129 PetriNetUnfolder]: 1914/7449 cut-off events. [2021-03-25 09:37:54,234 INFO L130 PetriNetUnfolder]: For 261877/262713 co-relation queries the response was YES. [2021-03-25 09:37:54,321 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66252 conditions, 7449 events. 1914/7449 cut-off events. For 261877/262713 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 88901 event pairs, 635 based on Foata normal form. 177/7276 useless extension candidates. Maximal degree in co-relation 66043. Up to 1108 conditions per place. [2021-03-25 09:37:54,592 INFO L142 LiptonReduction]: Number of co-enabled transitions 3512 [2021-03-25 09:38:04,100 INFO L154 LiptonReduction]: Checked pairs total: 408 [2021-03-25 09:38:04,101 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 09:38:04,101 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11463 [2021-03-25 09:38:04,101 INFO L480 AbstractCegarLoop]: Abstraction has has 384 places, 734 transitions, 19507 flow [2021-03-25 09:38:04,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 327.8888888888889) internal successors, (2951), 9 states have internal predecessors, (2951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:38:04,101 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:38:04,101 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] [2021-03-25 09:38:04,102 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-03-25 09:38:04,102 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:38:04,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:38:04,102 INFO L82 PathProgramCache]: Analyzing trace with hash 721391505, now seen corresponding path program 1 times [2021-03-25 09:38:04,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:38:04,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545750650] [2021-03-25 09:38:04,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:38:04,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:38:04,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:38:04,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 09:38:04,135 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:38:04,136 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 09:38:04,138 INFO L142 QuantifierPusher]: treesize reduction 19, result has 57.8 percent of original size [2021-03-25 09:38:04,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 09:38:04,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:38:04,141 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 09:38:04,147 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-03-25 09:38:04,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 09:38:04,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:38:04,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 09:38:04,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:38:04,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:38:04,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:38:04,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:38:04,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:38:04,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:38:04,208 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 09:38:04,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:38:04,209 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 09:38:04,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:38:04,222 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 09:38:04,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:38:04,236 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-03-25 09:38:04,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:38:04,237 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:38:04,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:38:04,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:38:04,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545750650] [2021-03-25 09:38:04,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:38:04,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-25 09:38:04,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258210521] [2021-03-25 09:38:04,238 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 09:38:04,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:38:04,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 09:38:04,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-03-25 09:38:04,240 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 351 [2021-03-25 09:38:04,240 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 734 transitions, 19507 flow. Second operand has 11 states, 11 states have (on average 47.72727272727273) internal successors, (525), 11 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:38:04,240 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:38:04,240 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 351 [2021-03-25 09:38:04,240 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:38:07,983 INFO L129 PetriNetUnfolder]: 2575/8607 cut-off events. [2021-03-25 09:38:07,983 INFO L130 PetriNetUnfolder]: For 353711/354610 co-relation queries the response was YES. [2021-03-25 09:38:08,087 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84289 conditions, 8607 events. 2575/8607 cut-off events. For 353711/354610 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 99294 event pairs, 1010 based on Foata normal form. 170/8505 useless extension candidates. Maximal degree in co-relation 84079. Up to 4223 conditions per place. [2021-03-25 09:38:08,120 INFO L132 encePairwiseOnDemand]: 318/351 looper letters, 622 selfloop transitions, 155 changer transitions 16/847 dead transitions. [2021-03-25 09:38:08,121 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 847 transitions, 23843 flow [2021-03-25 09:38:08,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-25 09:38:08,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-03-25 09:38:08,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 893 transitions. [2021-03-25 09:38:08,128 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.16961063627730294 [2021-03-25 09:38:08,128 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 893 transitions. [2021-03-25 09:38:08,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 893 transitions. [2021-03-25 09:38:08,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:38:08,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 893 transitions. [2021-03-25 09:38:08,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 59.53333333333333) internal successors, (893), 15 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:38:08,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 351.0) internal successors, (5616), 16 states have internal predecessors, (5616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:38:08,132 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 351.0) internal successors, (5616), 16 states have internal predecessors, (5616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:38:08,132 INFO L185 Difference]: Start difference. First operand has 384 places, 734 transitions, 19507 flow. Second operand 15 states and 893 transitions. [2021-03-25 09:38:08,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 847 transitions, 23843 flow [2021-03-25 09:38:09,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 847 transitions, 23454 flow, removed 134 selfloop flow, removed 18 redundant places. [2021-03-25 09:38:09,960 INFO L241 Difference]: Finished difference. Result has 388 places, 776 transitions, 20891 flow [2021-03-25 09:38:09,961 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=351, PETRI_DIFFERENCE_MINUEND_FLOW=18895, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=725, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=586, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=20891, PETRI_PLACES=388, PETRI_TRANSITIONS=776} [2021-03-25 09:38:09,961 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 334 predicate places. [2021-03-25 09:38:09,961 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:38:09,961 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 388 places, 776 transitions, 20891 flow [2021-03-25 09:38:09,961 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 388 places, 776 transitions, 20891 flow [2021-03-25 09:38:09,973 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 387 places, 776 transitions, 20891 flow [2021-03-25 09:38:10,909 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([106] L29-->L30: Formula: (or (= v_n2_2 0) (not (< v_n2_2 v_n1_7))) InVars {n2=v_n2_2, n1=v_n1_7} OutVars{n2=v_n2_2, n1=v_n1_7} AuxVars[] AssignedVars[][61], [Black: 500#(and (<= n1 n3) (<= n2 n1) (<= n3 n1) (<= 0 n2)), Black: 506#(and (<= 1 n1) (<= 0 n3) (<= 1 n2)), Black: 763#(and (<= 1 i2) (<= 2 i) (<= i 2) (<= i2 1)), Black: 510#(and (<= (+ n2 1) n1) (<= 0 n3) (<= 1 n2)), 7#L30true, 776#(and (<= 0 n3) (<= n2 n3)), 527#(and (<= 1 n3) (<= n2 n3) (<= n3 n1) (not (= n3 n1))), Black: 522#(and (<= 1 n3) (<= n3 n1)), Black: 523#(and (<= 1 n3) (<= n3 n1) (not (= n3 n1))), Black: 525#(and (<= 1 n3) (<= n2 n3) (<= n3 n1)), Black: 258#(and (<= n1 n3) (<= 1 n1) (<= n2 n1)), Black: 785#(and (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 260#(and (<= 1 n1) (<= 0 n3)), Black: 775#(and (<= n1 n3) (<= 0 n3) (<= n2 n3)), 538#(and (<= 0 n3) (<= 0 n2)), Black: 264#(and (or (<= 1 n3) (<= 1 n2)) (<= 1 n1) (<= 0 n3)), Black: 268#(and (<= 1 n1) (<= 0 n3) (or (and (<= 1 n3) (< n3 n1)) (<= 2 n2))), Black: 777#(<= 0 n3), Black: 270#(and (or (<= 1 n3) (<= 1 n2)) (<= 1 n1) (<= 0 n3) (<= n2 n1)), Black: 778#(and (<= n3 n2) (<= 0 n3)), Black: 272#(and (<= 0 n3) (<= n2 n1) (or (and (<= 1 n3) (< n3 n1)) (and (< n2 n1) (<= 2 n2)))), Black: 779#(and (<= 0 n3) (<= (+ n3 1) n2)), Black: 780#(and (<= 1 n3) (< n3 (+ n2 1))), Black: 244#(and (<= 0 n1) (<= 0 n3) (<= n2 n1)), 32#L77true, Black: 783#(and (<= n1 n3) (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 276#(and (<= 1 n3) (<= n2 n1) (< n3 n1)), Black: 245#(and (<= 0 n1) (<= 0 n3)), 292#true, 38#L64true, Black: 545#(and (<= n1 n3) (<= 0 n3) (<= 1 n2)), Black: 547#(and (<= n1 n3) (<= n2 n3) (<= 1 n2)), 40#thread2EXITtrue, Black: 549#(and (<= n1 n3) (<= 1 n3) (<= 1 n2)), Black: 539#(and (<= 0 n3) (<= 1 n2)), Black: 540#(and (<= 1 n3) (<= 1 n2)), Black: 541#(and (<= n2 n3) (<= 1 n2)), Black: 543#(and (<= n1 n3) (<= 0 n3) (<= 0 n2)), 559#true, Black: 294#(and (<= n1 n3) (<= 0 n3) (<= n2 n1) (<= n3 n1)), 832#(and (<= i2 0) (<= 1 i) (<= 0 i2) (<= i 1)), Black: 295#(and (<= n1 n3) (<= 0 n3) (<= n3 n1)), Black: 296#(and (<= n1 n3) (<= 0 n1)), Black: 298#(and (<= 0 n1) (or (<= n1 n3) (<= 1 n2))), Black: 299#(and (<= 1 n1) (or (<= n1 (+ n3 1)) (<= 1 n2))), Black: 300#(and (<= 1 n1) (or (<= n1 n3) (<= 1 n2))), Black: 305#(and (<= n1 n3) (<= 1 n1)), Black: 307#(and (<= 1 n1) (<= 1 n2)), Black: 309#(and (<= n1 n3) (<= 1 n1) (<= 1 n2)), Black: 315#(and (<= n1 n3) (< n2 n1) (<= 2 n2)), Black: 836#(and (<= i2 0) (<= 2 i) (<= i1 1) (<= i 2) (<= 0 i2) (<= 1 i1)), Black: 565#(and (= n3 n1) (<= 1 n1) (<= n1 (+ n2 1))), 851#true, Black: 570#(and (<= 1 n3) (< n3 n2)), Black: 574#(and (<= n1 (+ n3 1)) (<= (+ n3 1) n1) (or (<= 1 n3) (<= n2 n3)) (<= 1 n1) (<= n1 (+ n2 1))), 345#(and (<= 1 n1) (<= 0 n3) (<= n2 n1)), Black: 83#(and (<= 1 i2) (<= i3 0) (<= 2 i) (<= i 2) (<= i2 1) (<= 0 i3)), Black: 69#(and (<= i 0) (<= 0 i)), Black: 79#(and (<= i3 0) (<= 1 i) (<= i 1) (<= 0 i3)), 95#true, Black: 865#(and (<= 1 n3) (<= (+ n3 1) n1)), Black: 867#(and (<= 1 n3) (<= (+ n3 1) n1) (= n2 0)), Black: 869#(and (<= (+ n3 1) n1) (<= 2 n3) (= n2 0)), Black: 856#(and (<= (+ n3 1) n1) (<= 1 n1)), Black: 98#(and (<= (+ n3 1) n1) (<= 1 n1) (<= (+ n2 1) n1)), Black: 858#(and (<= 1 n3) (<= 2 n1)), Black: 859#(and (<= 1 n3) (<= 2 n1) (= n2 0)), Black: 860#(and (<= 2 n1) (<= 2 n3) (= n2 0)), Black: 861#(and (<= n1 n3) (<= 2 n1) (= n2 0)), Black: 112#e2, Black: 117#e1, 120#true, 639#(and (<= 1 n3) (or (<= n3 n2) (= n2 0)) (<= n2 n3) (<= n2 n1)), Black: 377#(and (or (and (<= 1 n3) (< n3 n1)) (<= n1 n2)) (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 365#(and (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 349#(and (<= n1 n2) (<= 0 n3) (<= n2 n1) (<= 1 n2)), 390#true, Black: 608#(and (<= 1 n3) (<= 0 n1) (or (<= n3 n2) (= n2 0))), Black: 641#(and (<= 1 n3) (or (<= 1 n2) (= n2 0)) (<= n2 n3) (<= n2 n1)), Black: 610#(and (= n3 0) (<= 0 n1) (<= n3 n2)), Black: 643#(and (<= 1 n3) (or (<= 1 n2) (= n2 0)) (<= n2 n1)), Black: 611#(and (= n3 0) (<= 1 n1) (<= n3 n2)), Black: 612#(and (= n3 0) (<= 1 n1) (<= (+ n3 1) n2)), Black: 645#(and (= n3 0) (<= n3 n2) (<= n2 n3) (<= n2 n1)), Black: 621#(and (<= n1 n3) (<= 1 n3) (or (<= n3 n2) (= n2 0)) (<= n2 n1)), Black: 623#(and (= n3 0) (<= n3 n2) (<= n2 n1)), Black: 625#(and (<= n1 n3) (or (<= 1 n2) (= n2 0)) (<= n2 n1)), Black: 627#(and (<= n1 n3) (<= 1 n3) (or (<= 1 n2) (= n2 0)) (<= n2 n1)), Black: 122#(and (<= n1 n3) (<= 0 n1) (<= n2 0)), Black: 124#(and (<= 1 n1) (<= 0 n3) (<= n2 0)), Black: 402#(and (<= n1 n3) (<= n1 n2) (<= 1 n1)), Black: 633#(and (<= 1 n3) (<= 0 n1) (or (<= 1 n2) (= n2 0))), Black: 125#(and (<= 1 n3) (<= 1 n1) (<= n2 0)), Black: 635#(and (or (<= 1 n2) (= n2 0)) (<= n2 n3) (<= n2 n1)), Black: 394#(and (<= n1 n3) (<= 0 n1)), Black: 637#(and (<= 1 n3) (or (<= n3 n2) (= n2 0)) (<= n2 n1)), Black: 395#(and (<= n1 (+ n3 1)) (<= 1 n1)), Black: 396#(and (<= n1 n3) (<= 1 n1)), 665#true, 410#true, Black: 154#e3, 157#true, Black: 416#(and (<= (+ n2 1) n1) (<= 1 n2)), Black: 418#(and (<= n1 n2) (<= n3 n2) (<= n2 n3) (<= n2 n1) (<= 1 n2)), Black: 412#(and (<= n1 n2) (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 413#(and (<= (+ n1 1) n2) (<= 1 n2) (<= (+ n3 1) n2)), Black: 414#(and (<= 1 n2) (<= (+ n3 1) n2) (= n2 n1)), Black: 415#(and (<= n2 n1) (<= 1 n2)), 426#true, Black: 160#(and (<= 0 n1) (<= n2 n1)), Black: 161#(and (<= 1 n1) (<= (+ n2 1) n1)), Black: 162#(and (<= 1 n1) (= n2 n1)), Black: 676#(and (<= n3 n2) (<= 2 n3)), Black: 677#(and (< n2 (+ n3 1)) (<= n3 n2) (<= 2 n2)), Black: 159#(and (<= 0 n1) (<= n2 n1) (<= n3 n1)), Black: 679#(and (<= n1 n2) (<= 0 n3) (<= n2 n3) (<= n3 n1)), Black: 668#(and (<= n1 n3) (<= 0 n3) (<= n2 n1)), Black: 669#(and (<= n1 n3) (<= 0 n3) (<= n2 n3)), Black: 685#(and (<= n1 n3) (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 670#(and (< n1 (+ n3 1)) (<= 0 n3) (<= n2 n3) (<= n3 n1)), Black: 687#(and (<= n1 n3) (<= n3 (+ n2 1)) (<= n2 n3) (<= 2 n3)), 704#(and (<= 0 n1) (<= 0 n3) (<= 0 n2)), Black: 438#(and (<= 1 i) (<= i1 0) (<= 0 i1) (<= i 1)), Black: 184#(and (<= 1 i) (<= i 1)), Black: 428#(and (<= i 0) (<= 0 i)), Black: 429#(and (<= i1 0) (<= 0 i1)), 459#true, 203#true, Black: 710#(and (<= n1 n2) (<= 0 n1) (<= 0 n3)), Black: 712#(and (<= n1 n2) (<= 0 n1) (<= 0 n3) (<= 1 n2)), Black: 714#(and (< n1 (+ n2 1)) (<= 1 n1) (<= 0 n3)), Black: 464#(and (< n3 (+ n2 1)) (<= n2 n3) (<= 1 n2)), Black: 716#(and (<= 0 n1) (<= 0 n3) (<= 1 n2)), Black: 718#(and (<= 1 n1) (<= 0 n3) (<= 1 n2)), Black: 466#(and (<= n1 n2) (<= n3 n2) (<= n2 n3) (<= 1 n2)), Black: 208#(and (<= 1 n3) (<= n3 (+ n2 1))), Black: 209#(and (<= 1 n3) (<= n3 n2)), Black: 210#(and (<= 1 n3) (<= n3 n2) (not (= n3 n2))), Black: 212#(and (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 214#(and (<= n1 n3) (<= 1 n3) (<= n3 n2) (<= n2 n3)), Black: 207#(and (<= n3 n2) (<= 0 n3)), 224#true, 741#(and (<= 1 n3) (<= 1 n1) (<= 0 n2)), Black: 482#(and (< n1 (+ n3 1)) (<= 1 n1) (<= n2 n1) (<= n3 n1)), Black: 475#(and (<= 0 n3) (<= n3 n1)), Black: 476#(and (<= 1 n3) (<= n3 (+ n1 1))), Black: 477#(and (<= 1 n3) (<= n3 n1)), Black: 478#(and (< n1 (+ n3 1)) (<= 1 n1) (<= n3 n1)), Black: 227#(and (<= 0 n3) (<= n2 n3) (<= n3 n1)), Black: 731#(and (<= 1 n3) (<= 0 n1) (<= 0 n2)), Black: 228#(and (<= 0 n3) (<= n3 n1)), Black: 732#(and (<= 0 n1) (<= 0 n2)), Black: 229#(and (<= (+ n3 1) n1) (<= 0 n3)), Black: 733#(and (= n3 0) (<= 0 n1) (<= 0 n2)), 752#true, Black: 232#(and (<= (+ n3 1) n1) (<= 0 n3) (<= n2 n3)), 502#(and (<= 0 n1) (<= 0 n3) (<= 0 n2)), 254#(and (<= 1 n1) (<= 0 n3) (<= n2 n1))]) [2021-03-25 09:38:10,910 INFO L384 tUnfolder$Statistics]: this new event has 21 ancestors and is not cut-off event [2021-03-25 09:38:10,910 INFO L387 tUnfolder$Statistics]: existing Event has 21 ancestors and is not cut-off event [2021-03-25 09:38:10,910 INFO L387 tUnfolder$Statistics]: existing Event has 23 ancestors and is not cut-off event [2021-03-25 09:38:10,910 INFO L387 tUnfolder$Statistics]: existing Event has 24 ancestors and is not cut-off event [2021-03-25 09:38:11,684 INFO L129 PetriNetUnfolder]: 1953/7704 cut-off events. [2021-03-25 09:38:11,684 INFO L130 PetriNetUnfolder]: For 283124/284160 co-relation queries the response was YES. [2021-03-25 09:38:11,774 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67937 conditions, 7704 events. 1953/7704 cut-off events. For 283124/284160 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 93839 event pairs, 695 based on Foata normal form. 249/7546 useless extension candidates. Maximal degree in co-relation 67495. Up to 1176 conditions per place. [2021-03-25 09:38:11,873 INFO L142 LiptonReduction]: Number of co-enabled transitions 3676 [2021-03-25 09:38:19,150 INFO L154 LiptonReduction]: Checked pairs total: 452 [2021-03-25 09:38:19,150 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 09:38:19,150 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 9189 [2021-03-25 09:38:19,150 INFO L480 AbstractCegarLoop]: Abstraction has has 387 places, 776 transitions, 20895 flow [2021-03-25 09:38:19,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 47.72727272727273) internal successors, (525), 11 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:38:19,150 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:38:19,151 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] [2021-03-25 09:38:19,151 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-25 09:38:19,151 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:38:19,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:38:19,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1018255110, now seen corresponding path program 1 times [2021-03-25 09:38:19,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:38:19,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248949847] [2021-03-25 09:38:19,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:38:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:38:19,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:38:19,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 09:38:19,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:38:19,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 09:38:19,182 INFO L142 QuantifierPusher]: treesize reduction 17, result has 60.5 percent of original size [2021-03-25 09:38:19,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-25 09:38:19,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:38:19,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 09:38:19,198 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-03-25 09:38:19,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 09:38:19,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:38:19,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 09:38:19,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:38:19,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:38:19,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:38:19,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:38:19,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:38:19,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:38:19,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:38:19,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:38:19,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:38:19,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:38:19,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:38:19,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:38:19,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:38:19,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248949847] [2021-03-25 09:38:19,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:38:19,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-25 09:38:19,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066374272] [2021-03-25 09:38:19,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 09:38:19,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:38:19,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 09:38:19,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-03-25 09:38:19,270 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 353 [2021-03-25 09:38:19,271 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 776 transitions, 20895 flow. Second operand has 11 states, 11 states have (on average 47.72727272727273) internal successors, (525), 11 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:38:19,271 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:38:19,271 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 353 [2021-03-25 09:38:19,271 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:38:22,871 INFO L129 PetriNetUnfolder]: 2516/8509 cut-off events. [2021-03-25 09:38:22,871 INFO L130 PetriNetUnfolder]: For 346493/347115 co-relation queries the response was YES. [2021-03-25 09:38:22,968 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81473 conditions, 8509 events. 2516/8509 cut-off events. For 346493/347115 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 98524 event pairs, 1003 based on Foata normal form. 93/8330 useless extension candidates. Maximal degree in co-relation 81060. Up to 4161 conditions per place. [2021-03-25 09:38:22,999 INFO L132 encePairwiseOnDemand]: 320/353 looper letters, 638 selfloop transitions, 125 changer transitions 6/823 dead transitions. [2021-03-25 09:38:23,000 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 823 transitions, 23289 flow [2021-03-25 09:38:23,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-25 09:38:23,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-25 09:38:23,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 788 transitions. [2021-03-25 09:38:23,001 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.1717149705818261 [2021-03-25 09:38:23,001 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 788 transitions. [2021-03-25 09:38:23,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 788 transitions. [2021-03-25 09:38:23,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:38:23,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 788 transitions. [2021-03-25 09:38:23,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 60.61538461538461) internal successors, (788), 13 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:38:23,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 353.0) internal successors, (4942), 14 states have internal predecessors, (4942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:38:23,004 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 353.0) internal successors, (4942), 14 states have internal predecessors, (4942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:38:23,004 INFO L185 Difference]: Start difference. First operand has 387 places, 776 transitions, 20895 flow. Second operand 13 states and 788 transitions. [2021-03-25 09:38:23,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 823 transitions, 23289 flow [2021-03-25 09:38:24,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 823 transitions, 22913 flow, removed 149 selfloop flow, removed 7 redundant places. [2021-03-25 09:38:24,846 INFO L241 Difference]: Finished difference. Result has 394 places, 769 transitions, 20561 flow [2021-03-25 09:38:24,846 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=20105, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=762, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=640, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=20561, PETRI_PLACES=394, PETRI_TRANSITIONS=769} [2021-03-25 09:38:24,847 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 340 predicate places. [2021-03-25 09:38:24,847 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:38:24,847 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 394 places, 769 transitions, 20561 flow [2021-03-25 09:38:24,847 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 394 places, 769 transitions, 20561 flow [2021-03-25 09:38:24,853 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 393 places, 769 transitions, 20561 flow [2021-03-25 09:38:25,700 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([106] L29-->L30: Formula: (or (= v_n2_2 0) (not (< v_n2_2 v_n1_7))) InVars {n2=v_n2_2, n1=v_n1_7} OutVars{n2=v_n2_2, n1=v_n1_7} AuxVars[] AssignedVars[][62], [Black: 500#(and (<= n1 n3) (<= n2 n1) (<= n3 n1) (<= 0 n2)), Black: 506#(and (<= 1 n1) (<= 0 n3) (<= 1 n2)), Black: 763#(and (<= 1 i2) (<= 2 i) (<= i 2) (<= i2 1)), Black: 510#(and (<= (+ n2 1) n1) (<= 0 n3) (<= 1 n2)), 7#L30true, 776#(and (<= 0 n3) (<= n2 n3)), 527#(and (<= 1 n3) (<= n2 n3) (<= n3 n1) (not (= n3 n1))), Black: 522#(and (<= 1 n3) (<= n3 n1)), Black: 523#(and (<= 1 n3) (<= n3 n1) (not (= n3 n1))), Black: 525#(and (<= 1 n3) (<= n2 n3) (<= n3 n1)), Black: 258#(and (<= n1 n3) (<= 1 n1) (<= n2 n1)), Black: 785#(and (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 260#(and (<= 1 n1) (<= 0 n3)), Black: 775#(and (<= n1 n3) (<= 0 n3) (<= n2 n3)), 538#(and (<= 0 n3) (<= 0 n2)), Black: 264#(and (or (<= 1 n3) (<= 1 n2)) (<= 1 n1) (<= 0 n3)), Black: 268#(and (<= 1 n1) (<= 0 n3) (or (and (<= 1 n3) (< n3 n1)) (<= 2 n2))), Black: 777#(<= 0 n3), Black: 270#(and (or (<= 1 n3) (<= 1 n2)) (<= 1 n1) (<= 0 n3) (<= n2 n1)), Black: 778#(and (<= n3 n2) (<= 0 n3)), Black: 779#(and (<= 0 n3) (<= (+ n3 1) n2)), Black: 272#(and (<= 0 n3) (<= n2 n1) (or (and (<= 1 n3) (< n3 n1)) (and (< n2 n1) (<= 2 n2)))), Black: 780#(and (<= 1 n3) (< n3 (+ n2 1))), 32#L77true, Black: 244#(and (<= 0 n1) (<= 0 n3) (<= n2 n1)), Black: 783#(and (<= n1 n3) (<= n3 n2) (<= 0 n3) (<= n2 n3)), Black: 245#(and (<= 0 n1) (<= 0 n3)), 292#true, 38#L64true, Black: 545#(and (<= n1 n3) (<= 0 n3) (<= 1 n2)), Black: 547#(and (<= n1 n3) (<= n2 n3) (<= 1 n2)), 40#thread2EXITtrue, Black: 549#(and (<= n1 n3) (<= 1 n3) (<= 1 n2)), Black: 539#(and (<= 0 n3) (<= 1 n2)), Black: 540#(and (<= 1 n3) (<= 1 n2)), Black: 541#(and (<= n2 n3) (<= 1 n2)), Black: 543#(and (<= n1 n3) (<= 0 n3) (<= 0 n2)), 559#true, Black: 294#(and (<= n1 n3) (<= 0 n3) (<= n2 n1) (<= n3 n1)), Black: 295#(and (<= n1 n3) (<= 0 n3) (<= n3 n1)), 832#(and (<= i2 0) (<= 1 i) (<= 0 i2) (<= i 1)), Black: 296#(and (<= n1 n3) (<= 0 n1)), Black: 298#(and (<= 0 n1) (or (<= n1 n3) (<= 1 n2))), Black: 299#(and (<= 1 n1) (or (<= n1 (+ n3 1)) (<= 1 n2))), Black: 300#(and (<= 1 n1) (or (<= n1 n3) (<= 1 n2))), Black: 307#(and (<= 1 n1) (<= 1 n2)), Black: 309#(and (<= n1 n3) (<= 1 n1) (<= 1 n2)), Black: 315#(and (<= n1 n3) (< n2 n1) (<= 2 n2)), Black: 836#(and (<= i2 0) (<= 2 i) (<= i1 1) (<= i 2) (<= 0 i2) (<= 1 i1)), Black: 565#(and (= n3 n1) (<= 1 n1) (<= n1 (+ n2 1))), 851#true, Black: 570#(and (<= 1 n3) (< n3 n2)), Black: 574#(and (<= n1 (+ n3 1)) (<= (+ n3 1) n1) (or (<= 1 n3) (<= n2 n3)) (<= 1 n1) (<= n1 (+ n2 1))), 345#(and (<= 1 n1) (<= 0 n3) (<= n2 n1)), Black: 83#(and (<= 1 i2) (<= i3 0) (<= 2 i) (<= i 2) (<= i2 1) (<= 0 i3)), Black: 69#(and (<= i 0) (<= 0 i)), Black: 79#(and (<= i3 0) (<= 1 i) (<= i 1) (<= 0 i3)), 95#true, Black: 865#(and (<= 1 n3) (<= (+ n3 1) n1)), Black: 867#(and (<= 1 n3) (<= (+ n3 1) n1) (= n2 0)), Black: 869#(and (<= (+ n3 1) n1) (<= 2 n3) (= n2 0)), Black: 856#(and (<= (+ n3 1) n1) (<= 1 n1)), Black: 98#(and (<= (+ n3 1) n1) (<= 1 n1) (<= (+ n2 1) n1)), Black: 858#(and (<= 1 n3) (<= 2 n1)), Black: 859#(and (<= 1 n3) (<= 2 n1) (= n2 0)), Black: 860#(and (<= 2 n1) (<= 2 n3) (= n2 0)), 879#true, Black: 112#e2, Black: 117#e1, 120#true, 639#(and (<= 1 n3) (or (<= n3 n2) (= n2 0)) (<= n2 n3) (<= n2 n1)), Black: 377#(and (or (and (<= 1 n3) (< n3 n1)) (<= n1 n2)) (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 365#(and (or (and (<= 1 n3) (< n3 n1)) (<= 1 n2)) (<= 0 n3) (<= n2 n1)), Black: 349#(and (<= n1 n2) (<= 0 n3) (<= n2 n1) (<= 1 n2)), 390#true, Black: 893#(and (<= 1 n3) (<= n2 n3) (<= 2 n1)), Black: 608#(and (<= 1 n3) (<= 0 n1) (or (<= n3 n2) (= n2 0))), Black: 641#(and (<= 1 n3) (or (<= 1 n2) (= n2 0)) (<= n2 n3) (<= n2 n1)), Black: 895#(and (<= n2 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n1 (+ n3 1)) (<= 1 n1) (<= n2 n1) (<= n3 n1)), 741#(and (<= 1 n3) (<= 1 n1) (<= 0 n2)), Black: 475#(and (<= 0 n3) (<= n3 n1)), Black: 476#(and (<= 1 n3) (<= n3 (+ n1 1))), Black: 477#(and (<= 1 n3) (<= n3 n1)), Black: 478#(and (< n1 (+ n3 1)) (<= 1 n1) (<= n3 n1)), Black: 227#(and (<= 0 n3) (<= n2 n3) (<= n3 n1)), Black: 228#(and (<= 0 n3) (<= n3 n1)), Black: 731#(and (<= 1 n3) (<= 0 n1) (<= 0 n2)), Black: 732#(and (<= 0 n1) (<= 0 n2)), Black: 229#(and (<= (+ n3 1) n1) (<= 0 n3)), Black: 733#(and (= n3 0) (<= 0 n1) (<= 0 n2)), Black: 232#(and (<= (+ n3 1) n1) (<= 0 n3) (<= n2 n3)), 752#true, 502#(and (<= 0 n1) (<= 0 n3) (<= 0 n2)), 254#(and (<= 1 n1) (<= 0 n3) (<= n2 n1))]) [2021-03-25 09:38:25,700 INFO L384 tUnfolder$Statistics]: this new event has 21 ancestors and is cut-off event [2021-03-25 09:38:25,700 INFO L387 tUnfolder$Statistics]: existing Event has 23 ancestors and is cut-off event [2021-03-25 09:38:25,700 INFO L387 tUnfolder$Statistics]: existing Event has 21 ancestors and is cut-off event [2021-03-25 09:38:25,700 INFO L387 tUnfolder$Statistics]: existing Event has 24 ancestors and is cut-off event [2021-03-25 09:38:26,569 INFO L129 PetriNetUnfolder]: 1881/7552 cut-off events. [2021-03-25 09:38:26,569 INFO L130 PetriNetUnfolder]: For 266154/267123 co-relation queries the response was YES. [2021-03-25 09:38:26,658 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65950 conditions, 7552 events. 1881/7552 cut-off events. For 266154/267123 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 92277 event pairs, 687 based on Foata normal form. 205/7346 useless extension candidates. Maximal degree in co-relation 65520. Up to 1126 conditions per place. [2021-03-25 09:38:26,758 INFO L142 LiptonReduction]: Number of co-enabled transitions 3632 [2021-03-25 09:38:30,431 INFO L154 LiptonReduction]: Checked pairs total: 28 [2021-03-25 09:38:30,431 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 09:38:30,432 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5585 [2021-03-25 09:38:30,432 INFO L480 AbstractCegarLoop]: Abstraction has has 393 places, 769 transitions, 20561 flow [2021-03-25 09:38:30,432 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 47.72727272727273) internal successors, (525), 11 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:38:30,432 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:38:30,432 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] [2021-03-25 09:38:30,432 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-03-25 09:38:30,432 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:38:30,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:38:30,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1558205094, now seen corresponding path program 1 times [2021-03-25 09:38:30,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:38:30,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989394573] [2021-03-25 09:38:30,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:38:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:38:30,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:38:30,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:38:30,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:38:30,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 09:38:30,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:38:30,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 09:38:30,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:38:30,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 09:38:30,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:38:30,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:38:30,495 INFO L142 QuantifierPusher]: treesize reduction 12, result has 45.5 percent of original size [2021-03-25 09:38:30,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:38:30,496 INFO L142 QuantifierPusher]: treesize reduction 12, result has 45.5 percent of original size [2021-03-25 09:38:30,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:38:30,504 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-03-25 09:38:30,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 09:38:30,513 INFO L142 QuantifierPusher]: treesize reduction 17, result has 29.2 percent of original size [2021-03-25 09:38:30,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:38:30,522 INFO L142 QuantifierPusher]: treesize reduction 15, result has 6.3 percent of original size [2021-03-25 09:38:30,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:38:30,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:38:30,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:38:30,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:38:30,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989394573] [2021-03-25 09:38:30,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:38:30,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 09:38:30,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594719584] [2021-03-25 09:38:30,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 09:38:30,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:38:30,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 09:38:30,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-03-25 09:38:30,525 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 353 [2021-03-25 09:38:30,525 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 769 transitions, 20561 flow. Second operand has 9 states, 9 states have (on average 48.111111111111114) internal successors, (433), 9 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:38:30,525 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:38:30,525 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 353 [2021-03-25 09:38:30,525 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:38:34,461 INFO L129 PetriNetUnfolder]: 2569/8732 cut-off events. [2021-03-25 09:38:34,462 INFO L130 PetriNetUnfolder]: For 351311/351987 co-relation queries the response was YES. [2021-03-25 09:38:34,564 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83172 conditions, 8732 events. 2569/8732 cut-off events. For 351311/351987 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 101678 event pairs, 954 based on Foata normal form. 150/8598 useless extension candidates. Maximal degree in co-relation 82744. Up to 4082 conditions per place. [2021-03-25 09:38:34,597 INFO L132 encePairwiseOnDemand]: 287/353 looper letters, 584 selfloop transitions, 227 changer transitions 6/871 dead transitions. [2021-03-25 09:38:34,597 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 871 transitions, 24619 flow [2021-03-25 09:38:34,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-25 09:38:34,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-25 09:38:34,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 795 transitions. [2021-03-25 09:38:34,599 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.17324035737633472 [2021-03-25 09:38:34,599 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 795 transitions. [2021-03-25 09:38:34,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 795 transitions. [2021-03-25 09:38:34,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:38:34,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 795 transitions. [2021-03-25 09:38:34,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 61.15384615384615) internal successors, (795), 13 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:38:34,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 353.0) internal successors, (4942), 14 states have internal predecessors, (4942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:38:34,603 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 353.0) internal successors, (4942), 14 states have internal predecessors, (4942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:38:34,603 INFO L185 Difference]: Start difference. First operand has 393 places, 769 transitions, 20561 flow. Second operand 13 states and 795 transitions. [2021-03-25 09:38:34,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 871 transitions, 24619 flow [2021-03-25 09:38:36,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 871 transitions, 24386 flow, removed 25 selfloop flow, removed 8 redundant places. [2021-03-25 09:38:36,595 INFO L241 Difference]: Finished difference. Result has 404 places, 809 transitions, 22247 flow [2021-03-25 09:38:36,596 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=20327, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=768, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=22247, PETRI_PLACES=404, PETRI_TRANSITIONS=809} [2021-03-25 09:38:36,596 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 350 predicate places. [2021-03-25 09:38:36,596 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:38:36,596 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 404 places, 809 transitions, 22247 flow [2021-03-25 09:38:36,597 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 404 places, 809 transitions, 22247 flow [2021-03-25 09:38:36,606 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 404 places, 809 transitions, 22247 flow [2021-03-25 09:38:38,469 INFO L129 PetriNetUnfolder]: 1918/7655 cut-off events. [2021-03-25 09:38:38,469 INFO L130 PetriNetUnfolder]: For 284085/285016 co-relation queries the response was YES. [2021-03-25 09:38:38,557 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68417 conditions, 7655 events. 1918/7655 cut-off events. For 284085/285016 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 93351 event pairs, 679 based on Foata normal form. 187/7422 useless extension candidates. Maximal degree in co-relation 67962. Up to 1108 conditions per place. [2021-03-25 09:38:38,657 INFO L142 LiptonReduction]: Number of co-enabled transitions 3738 [2021-03-25 09:38:47,670 INFO L154 LiptonReduction]: Checked pairs total: 1263 [2021-03-25 09:38:47,670 INFO L156 LiptonReduction]: Total number of compositions: 12 [2021-03-25 09:38:47,670 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11074 [2021-03-25 09:38:47,671 INFO L480 AbstractCegarLoop]: Abstraction has has 404 places, 809 transitions, 22270 flow [2021-03-25 09:38:47,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 48.111111111111114) internal successors, (433), 9 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:38:47,671 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:38:47,671 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] [2021-03-25 09:38:47,671 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-03-25 09:38:47,671 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:38:47,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:38:47,671 INFO L82 PathProgramCache]: Analyzing trace with hash -719825490, now seen corresponding path program 1 times [2021-03-25 09:38:47,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:38:47,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871989363] [2021-03-25 09:38:47,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:38:47,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:38:47,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:38:47,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 09:38:47,705 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:38:47,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 09:38:47,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:38:47,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 09:38:47,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:38:47,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 09:38:47,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:38:47,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:38:47,743 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:38:47,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:38:47,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:38:47,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 09:38:47,757 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-03-25 09:38:47,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 09:38:47,765 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-03-25 09:38:47,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:38:47,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:38:47,765 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:38:47,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:38:47,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871989363] [2021-03-25 09:38:47,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:38:47,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-25 09:38:47,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401890805] [2021-03-25 09:38:47,766 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-25 09:38:47,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:38:47,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-25 09:38:47,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-03-25 09:38:47,767 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 365 [2021-03-25 09:38:47,767 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 809 transitions, 22270 flow. Second operand has 9 states, 9 states have (on average 48.111111111111114) internal successors, (433), 9 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:38:47,767 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:38:47,767 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 365 [2021-03-25 09:38:47,768 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:38:48,047 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2021-03-25 09:38:52,026 INFO L129 PetriNetUnfolder]: 2534/8858 cut-off events. [2021-03-25 09:38:52,026 INFO L130 PetriNetUnfolder]: For 374287/374961 co-relation queries the response was YES. [2021-03-25 09:38:52,124 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86184 conditions, 8858 events. 2534/8858 cut-off events. For 374287/374961 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 104982 event pairs, 899 based on Foata normal form. 163/8733 useless extension candidates. Maximal degree in co-relation 85738. Up to 4283 conditions per place. [2021-03-25 09:38:52,155 INFO L132 encePairwiseOnDemand]: 318/365 looper letters, 640 selfloop transitions, 155 changer transitions 71/920 dead transitions. [2021-03-25 09:38:52,155 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 920 transitions, 26588 flow [2021-03-25 09:38:52,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-25 09:38:52,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-03-25 09:38:52,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 909 transitions. [2021-03-25 09:38:52,156 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.16602739726027396 [2021-03-25 09:38:52,156 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 909 transitions. [2021-03-25 09:38:52,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 909 transitions. [2021-03-25 09:38:52,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:38:52,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 909 transitions. [2021-03-25 09:38:52,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 60.6) internal successors, (909), 15 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:38:52,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 365.0) internal successors, (5840), 16 states have internal predecessors, (5840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:38:52,161 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 365.0) internal successors, (5840), 16 states have internal predecessors, (5840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:38:52,161 INFO L185 Difference]: Start difference. First operand has 404 places, 809 transitions, 22270 flow. Second operand 15 states and 909 transitions. [2021-03-25 09:38:52,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 920 transitions, 26588 flow [2021-03-25 09:38:54,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 920 transitions, 26310 flow, removed 124 selfloop flow, removed 3 redundant places. [2021-03-25 09:38:54,186 INFO L241 Difference]: Finished difference. Result has 423 places, 811 transitions, 22301 flow [2021-03-25 09:38:54,187 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=21564, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=796, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=656, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=22301, PETRI_PLACES=423, PETRI_TRANSITIONS=811} [2021-03-25 09:38:54,187 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 369 predicate places. [2021-03-25 09:38:54,187 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:38:54,187 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 423 places, 811 transitions, 22301 flow [2021-03-25 09:38:54,187 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 423 places, 811 transitions, 22301 flow [2021-03-25 09:38:54,194 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 422 places, 811 transitions, 22301 flow [2021-03-25 09:38:56,032 INFO L129 PetriNetUnfolder]: 1901/7568 cut-off events. [2021-03-25 09:38:56,032 INFO L130 PetriNetUnfolder]: For 299407/300324 co-relation queries the response was YES. [2021-03-25 09:38:56,123 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69543 conditions, 7568 events. 1901/7568 cut-off events. For 299407/300324 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 92136 event pairs, 633 based on Foata normal form. 194/7367 useless extension candidates. Maximal degree in co-relation 69167. Up to 1107 conditions per place. [2021-03-25 09:38:56,226 INFO L142 LiptonReduction]: Number of co-enabled transitions 3752 [2021-03-25 09:39:10,777 INFO L154 LiptonReduction]: Checked pairs total: 1350 [2021-03-25 09:39:10,778 INFO L156 LiptonReduction]: Total number of compositions: 10 [2021-03-25 09:39:10,778 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 16591 [2021-03-25 09:39:10,778 INFO L480 AbstractCegarLoop]: Abstraction has has 422 places, 811 transitions, 22319 flow [2021-03-25 09:39:10,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 48.111111111111114) internal successors, (433), 9 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:39:10,778 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:39:10,778 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] [2021-03-25 09:39:10,778 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-03-25 09:39:10,778 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:39:10,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:39:10,779 INFO L82 PathProgramCache]: Analyzing trace with hash -273649817, now seen corresponding path program 1 times [2021-03-25 09:39:10,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:39:10,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864547635] [2021-03-25 09:39:10,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:39:10,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:39:10,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:39:10,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 09:39:10,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:39:10,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 09:39:10,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:39:10,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:39:10,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:39:10,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:39:10,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:39:10,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:39:10,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:39:10,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 09:39:10,838 INFO L142 QuantifierPusher]: treesize reduction 7, result has 75.0 percent of original size [2021-03-25 09:39:10,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-25 09:39:10,855 INFO L142 QuantifierPusher]: treesize reduction 8, result has 61.9 percent of original size [2021-03-25 09:39:10,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 09:39:10,866 INFO L142 QuantifierPusher]: treesize reduction 14, result has 58.8 percent of original size [2021-03-25 09:39:10,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-25 09:39:10,880 INFO L142 QuantifierPusher]: treesize reduction 10, result has 47.4 percent of original size [2021-03-25 09:39:10,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 09:39:10,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:39:10,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 09:39:10,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:39:10,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:39:10,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:39:10,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864547635] [2021-03-25 09:39:10,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:39:10,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-25 09:39:10,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758949318] [2021-03-25 09:39:10,892 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 09:39:10,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:39:10,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 09:39:10,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-03-25 09:39:10,893 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 375 [2021-03-25 09:39:10,894 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 811 transitions, 22319 flow. Second operand has 11 states, 11 states have (on average 47.72727272727273) internal successors, (525), 11 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:39:10,894 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:39:10,894 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 375 [2021-03-25 09:39:10,894 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:39:11,243 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 9 [2021-03-25 09:39:15,828 INFO L129 PetriNetUnfolder]: 2603/9140 cut-off events. [2021-03-25 09:39:15,828 INFO L130 PetriNetUnfolder]: For 396166/396809 co-relation queries the response was YES. [2021-03-25 09:39:15,939 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90324 conditions, 9140 events. 2603/9140 cut-off events. For 396166/396809 co-relation queries the response was YES. Maximal size of possible extension queue 762. Compared 109777 event pairs, 747 based on Foata normal form. 104/8956 useless extension candidates. Maximal degree in co-relation 89864. Up to 3504 conditions per place. [2021-03-25 09:39:15,974 INFO L132 encePairwiseOnDemand]: 309/375 looper letters, 644 selfloop transitions, 376 changer transitions 11/1085 dead transitions. [2021-03-25 09:39:15,975 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 1085 transitions, 31216 flow [2021-03-25 09:39:15,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-03-25 09:39:15,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-03-25 09:39:15,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1203 transitions. [2021-03-25 09:39:15,976 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.1604 [2021-03-25 09:39:15,976 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1203 transitions. [2021-03-25 09:39:15,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1203 transitions. [2021-03-25 09:39:15,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:39:15,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1203 transitions. [2021-03-25 09:39:15,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 60.15) internal successors, (1203), 20 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:39:15,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 375.0) internal successors, (7875), 21 states have internal predecessors, (7875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:39:15,982 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 375.0) internal successors, (7875), 21 states have internal predecessors, (7875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:39:15,982 INFO L185 Difference]: Start difference. First operand has 422 places, 811 transitions, 22319 flow. Second operand 20 states and 1203 transitions. [2021-03-25 09:39:15,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 1085 transitions, 31216 flow [2021-03-25 09:39:18,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 1085 transitions, 30709 flow, removed 226 selfloop flow, removed 5 redundant places. [2021-03-25 09:39:18,304 INFO L241 Difference]: Finished difference. Result has 445 places, 952 transitions, 27094 flow [2021-03-25 09:39:18,305 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=21928, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=811, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=263, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=27094, PETRI_PLACES=445, PETRI_TRANSITIONS=952} [2021-03-25 09:39:18,305 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 391 predicate places. [2021-03-25 09:39:18,305 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:39:18,305 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 445 places, 952 transitions, 27094 flow [2021-03-25 09:39:18,305 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 445 places, 952 transitions, 27094 flow [2021-03-25 09:39:18,314 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 445 places, 952 transitions, 27094 flow [2021-03-25 09:39:20,332 INFO L129 PetriNetUnfolder]: 2034/8294 cut-off events. [2021-03-25 09:39:20,332 INFO L130 PetriNetUnfolder]: For 354487/355396 co-relation queries the response was YES. [2021-03-25 09:39:20,455 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78425 conditions, 8294 events. 2034/8294 cut-off events. For 354487/355396 co-relation queries the response was YES. Maximal size of possible extension queue 713. Compared 103827 event pairs, 629 based on Foata normal form. 274/8227 useless extension candidates. Maximal degree in co-relation 77977. Up to 1180 conditions per place. [2021-03-25 09:39:20,750 INFO L142 LiptonReduction]: Number of co-enabled transitions 4324 [2021-03-25 09:39:32,811 INFO L154 LiptonReduction]: Checked pairs total: 2136 [2021-03-25 09:39:32,812 INFO L156 LiptonReduction]: Total number of compositions: 14 [2021-03-25 09:39:32,812 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 14507 [2021-03-25 09:39:32,812 INFO L480 AbstractCegarLoop]: Abstraction has has 445 places, 952 transitions, 27119 flow [2021-03-25 09:39:32,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 47.72727272727273) internal successors, (525), 11 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:39:32,812 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:39:32,812 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] [2021-03-25 09:39:32,812 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-03-25 09:39:32,812 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:39:32,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:39:32,813 INFO L82 PathProgramCache]: Analyzing trace with hash -258483323, now seen corresponding path program 2 times [2021-03-25 09:39:32,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:39:32,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846692531] [2021-03-25 09:39:32,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:39:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:39:32,835 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:39:32,835 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 09:39:32,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:39:32,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 09:39:32,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:39:32,849 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:39:32,855 INFO L142 QuantifierPusher]: treesize reduction 4, result has 81.8 percent of original size [2021-03-25 09:39:32,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 09:39:32,859 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-25 09:39:32,859 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:39:32,867 INFO L142 QuantifierPusher]: treesize reduction 23, result has 23.3 percent of original size [2021-03-25 09:39:32,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:39:32,873 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-03-25 09:39:32,874 INFO L147 QuantifierPusher]: treesize reduction 4, result has 69.2 percent of original size 9 [2021-03-25 09:39:32,886 INFO L142 QuantifierPusher]: treesize reduction 11, result has 52.2 percent of original size [2021-03-25 09:39:32,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 09:39:32,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:39:32,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:39:32,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:39:32,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846692531] [2021-03-25 09:39:32,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:39:32,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 09:39:32,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261577734] [2021-03-25 09:39:32,888 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 09:39:32,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:39:32,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 09:39:32,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-25 09:39:32,890 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 389 [2021-03-25 09:39:32,890 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 952 transitions, 27119 flow. Second operand has 7 states, 7 states have (on average 48.714285714285715) internal successors, (341), 7 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:39:32,890 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:39:32,890 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 389 [2021-03-25 09:39:32,890 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:39:37,586 INFO L129 PetriNetUnfolder]: 2716/9659 cut-off events. [2021-03-25 09:39:37,586 INFO L130 PetriNetUnfolder]: For 448763/449352 co-relation queries the response was YES. [2021-03-25 09:39:37,704 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97572 conditions, 9659 events. 2716/9659 cut-off events. For 448763/449352 co-relation queries the response was YES. Maximal size of possible extension queue 828. Compared 118150 event pairs, 1077 based on Foata normal form. 91/9421 useless extension candidates. Maximal degree in co-relation 97109. Up to 4791 conditions per place. [2021-03-25 09:39:37,742 INFO L132 encePairwiseOnDemand]: 363/389 looper letters, 868 selfloop transitions, 115 changer transitions 16/1053 dead transitions. [2021-03-25 09:39:37,743 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 1053 transitions, 31842 flow [2021-03-25 09:39:37,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 09:39:37,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 09:39:37,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 549 transitions. [2021-03-25 09:39:37,744 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.176413881748072 [2021-03-25 09:39:37,744 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 549 transitions. [2021-03-25 09:39:37,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 549 transitions. [2021-03-25 09:39:37,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:39:37,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 549 transitions. [2021-03-25 09:39:37,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 68.625) internal successors, (549), 8 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:39:37,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 389.0) internal successors, (3501), 9 states have internal predecessors, (3501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:39:37,747 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 389.0) internal successors, (3501), 9 states have internal predecessors, (3501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:39:37,747 INFO L185 Difference]: Start difference. First operand has 445 places, 952 transitions, 27119 flow. Second operand 8 states and 549 transitions. [2021-03-25 09:39:37,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 1053 transitions, 31842 flow [2021-03-25 09:39:40,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 1053 transitions, 31294 flow, removed 201 selfloop flow, removed 4 redundant places. [2021-03-25 09:39:40,573 INFO L241 Difference]: Finished difference. Result has 453 places, 977 transitions, 27750 flow [2021-03-25 09:39:40,573 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=26453, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=946, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=834, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=27750, PETRI_PLACES=453, PETRI_TRANSITIONS=977} [2021-03-25 09:39:40,573 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 399 predicate places. [2021-03-25 09:39:40,573 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:39:40,574 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 453 places, 977 transitions, 27750 flow [2021-03-25 09:39:40,574 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 453 places, 977 transitions, 27750 flow [2021-03-25 09:39:40,582 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 453 places, 977 transitions, 27750 flow [2021-03-25 09:39:42,725 INFO L129 PetriNetUnfolder]: 2117/8652 cut-off events. [2021-03-25 09:39:42,725 INFO L130 PetriNetUnfolder]: For 359727/360739 co-relation queries the response was YES. [2021-03-25 09:39:42,837 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81022 conditions, 8652 events. 2117/8652 cut-off events. For 359727/360739 co-relation queries the response was YES. Maximal size of possible extension queue 762. Compared 109825 event pairs, 720 based on Foata normal form. 289/8577 useless extension candidates. Maximal degree in co-relation 80565. Up to 1287 conditions per place. [2021-03-25 09:39:43,097 INFO L142 LiptonReduction]: Number of co-enabled transitions 4404 [2021-03-25 09:39:49,345 INFO L154 LiptonReduction]: Checked pairs total: 28 [2021-03-25 09:39:49,346 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 09:39:49,346 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8773 [2021-03-25 09:39:49,346 INFO L480 AbstractCegarLoop]: Abstraction has has 453 places, 977 transitions, 27750 flow [2021-03-25 09:39:49,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 48.714285714285715) internal successors, (341), 7 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:39:49,346 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:39:49,346 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] [2021-03-25 09:39:49,346 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-03-25 09:39:49,346 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:39:49,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:39:49,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1033826922, now seen corresponding path program 2 times [2021-03-25 09:39:49,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:39:49,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952055291] [2021-03-25 09:39:49,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:39:49,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:39:49,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:39:49,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 09:39:49,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:39:49,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 09:39:49,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:39:49,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:39:49,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:39:49,399 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:39:49,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:39:49,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:39:49,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:39:49,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 09:39:49,413 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-03-25 09:39:49,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 09:39:49,422 INFO L142 QuantifierPusher]: treesize reduction 24, result has 29.4 percent of original size [2021-03-25 09:39:49,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:39:49,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:39:49,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:39:49,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:39:49,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:39:49,446 INFO L142 QuantifierPusher]: treesize reduction 1, result has 90.0 percent of original size [2021-03-25 09:39:49,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 09:39:49,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:39:49,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:39:49,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:39:49,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952055291] [2021-03-25 09:39:49,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:39:49,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-25 09:39:49,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400058171] [2021-03-25 09:39:49,457 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 09:39:49,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:39:49,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 09:39:49,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-03-25 09:39:49,458 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 389 [2021-03-25 09:39:49,458 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 977 transitions, 27750 flow. Second operand has 11 states, 11 states have (on average 47.72727272727273) internal successors, (525), 11 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:39:49,458 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:39:49,458 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 389 [2021-03-25 09:39:49,459 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:39:54,119 INFO L129 PetriNetUnfolder]: 2896/10177 cut-off events. [2021-03-25 09:39:54,119 INFO L130 PetriNetUnfolder]: For 470349/471049 co-relation queries the response was YES. [2021-03-25 09:39:54,243 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102218 conditions, 10177 events. 2896/10177 cut-off events. For 470349/471049 co-relation queries the response was YES. Maximal size of possible extension queue 862. Compared 125248 event pairs, 1145 based on Foata normal form. 116/9947 useless extension candidates. Maximal degree in co-relation 101774. Up to 5277 conditions per place. [2021-03-25 09:39:54,280 INFO L132 encePairwiseOnDemand]: 357/389 looper letters, 889 selfloop transitions, 105 changer transitions 2/1050 dead transitions. [2021-03-25 09:39:54,280 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 1050 transitions, 31564 flow [2021-03-25 09:39:54,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 09:39:54,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 09:39:54,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 697 transitions. [2021-03-25 09:39:54,281 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.16288852535639167 [2021-03-25 09:39:54,281 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 697 transitions. [2021-03-25 09:39:54,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 697 transitions. [2021-03-25 09:39:54,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:39:54,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 697 transitions. [2021-03-25 09:39:54,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 63.36363636363637) internal successors, (697), 11 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:39:54,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 389.0) internal successors, (4668), 12 states have internal predecessors, (4668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:39:54,284 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 389.0) internal successors, (4668), 12 states have internal predecessors, (4668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:39:54,284 INFO L185 Difference]: Start difference. First operand has 453 places, 977 transitions, 27750 flow. Second operand 11 states and 697 transitions. [2021-03-25 09:39:54,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 1050 transitions, 31564 flow [2021-03-25 09:39:56,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 1050 transitions, 31371 flow, removed 46 selfloop flow, removed 1 redundant places. [2021-03-25 09:39:56,967 INFO L241 Difference]: Finished difference. Result has 466 places, 988 transitions, 28135 flow [2021-03-25 09:39:56,967 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=389, PETRI_DIFFERENCE_MINUEND_FLOW=27520, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=976, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=874, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=28135, PETRI_PLACES=466, PETRI_TRANSITIONS=988} [2021-03-25 09:39:56,967 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 412 predicate places. [2021-03-25 09:39:56,967 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:39:56,967 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 466 places, 988 transitions, 28135 flow [2021-03-25 09:39:56,968 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 466 places, 988 transitions, 28135 flow [2021-03-25 09:39:56,976 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 466 places, 988 transitions, 28135 flow [2021-03-25 09:39:59,359 INFO L129 PetriNetUnfolder]: 2317/9244 cut-off events. [2021-03-25 09:39:59,359 INFO L130 PetriNetUnfolder]: For 403153/404294 co-relation queries the response was YES. [2021-03-25 09:39:59,478 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87520 conditions, 9244 events. 2317/9244 cut-off events. For 403153/404294 co-relation queries the response was YES. Maximal size of possible extension queue 791. Compared 117773 event pairs, 813 based on Foata normal form. 306/9147 useless extension candidates. Maximal degree in co-relation 87046. Up to 1387 conditions per place. [2021-03-25 09:39:59,604 INFO L142 LiptonReduction]: Number of co-enabled transitions 4488 [2021-03-25 09:40:15,852 INFO L154 LiptonReduction]: Checked pairs total: 373 [2021-03-25 09:40:15,852 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 09:40:15,853 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 18886 [2021-03-25 09:40:15,853 INFO L480 AbstractCegarLoop]: Abstraction has has 466 places, 988 transitions, 28139 flow [2021-03-25 09:40:15,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 47.72727272727273) internal successors, (525), 11 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:40:15,853 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:40:15,853 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] [2021-03-25 09:40:15,853 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-03-25 09:40:15,853 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:40:15,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:40:15,854 INFO L82 PathProgramCache]: Analyzing trace with hash -187791028, now seen corresponding path program 3 times [2021-03-25 09:40:15,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:40:15,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574356476] [2021-03-25 09:40:15,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:40:15,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:40:15,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:40:15,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 09:40:15,889 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:40:15,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 09:40:15,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:40:15,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:40:15,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:40:15,904 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:40:15,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:40:15,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:40:15,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:40:15,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-25 09:40:15,913 INFO L142 QuantifierPusher]: treesize reduction 4, result has 75.0 percent of original size [2021-03-25 09:40:15,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 09:40:15,921 INFO L142 QuantifierPusher]: treesize reduction 31, result has 24.4 percent of original size [2021-03-25 09:40:15,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:40:15,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:40:15,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:40:15,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:40:15,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:40:15,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:40:15,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 09:40:15,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:40:15,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:40:15,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:40:15,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574356476] [2021-03-25 09:40:15,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:40:15,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-25 09:40:15,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543934694] [2021-03-25 09:40:15,962 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 09:40:15,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:40:15,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 09:40:15,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-03-25 09:40:15,964 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 392 [2021-03-25 09:40:15,964 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 988 transitions, 28139 flow. Second operand has 11 states, 11 states have (on average 47.72727272727273) internal successors, (525), 11 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:40:15,964 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:40:15,964 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 392 [2021-03-25 09:40:15,964 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:40:20,892 INFO L129 PetriNetUnfolder]: 2832/9915 cut-off events. [2021-03-25 09:40:20,892 INFO L130 PetriNetUnfolder]: For 467021/467714 co-relation queries the response was YES. [2021-03-25 09:40:21,014 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100461 conditions, 9915 events. 2832/9915 cut-off events. For 467021/467714 co-relation queries the response was YES. Maximal size of possible extension queue 851. Compared 121349 event pairs, 1107 based on Foata normal form. 98/9674 useless extension candidates. Maximal degree in co-relation 100024. Up to 5183 conditions per place. [2021-03-25 09:40:21,051 INFO L132 encePairwiseOnDemand]: 359/392 looper letters, 892 selfloop transitions, 101 changer transitions 1/1048 dead transitions. [2021-03-25 09:40:21,051 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 1048 transitions, 31580 flow [2021-03-25 09:40:21,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-25 09:40:21,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-25 09:40:21,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 700 transitions. [2021-03-25 09:40:21,053 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.16233766233766234 [2021-03-25 09:40:21,053 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 700 transitions. [2021-03-25 09:40:21,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 700 transitions. [2021-03-25 09:40:21,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:40:21,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 700 transitions. [2021-03-25 09:40:21,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 63.63636363636363) internal successors, (700), 11 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:40:21,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 392.0) internal successors, (4704), 12 states have internal predecessors, (4704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:40:21,055 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 392.0) internal successors, (4704), 12 states have internal predecessors, (4704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:40:21,055 INFO L185 Difference]: Start difference. First operand has 466 places, 988 transitions, 28139 flow. Second operand 11 states and 700 transitions. [2021-03-25 09:40:21,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 1048 transitions, 31580 flow [2021-03-25 09:40:23,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 1048 transitions, 31368 flow, removed 74 selfloop flow, removed 4 redundant places. [2021-03-25 09:40:23,923 INFO L241 Difference]: Finished difference. Result has 474 places, 984 transitions, 28034 flow [2021-03-25 09:40:23,924 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=392, PETRI_DIFFERENCE_MINUEND_FLOW=27741, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=982, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=881, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=28034, PETRI_PLACES=474, PETRI_TRANSITIONS=984} [2021-03-25 09:40:23,924 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 420 predicate places. [2021-03-25 09:40:23,924 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:40:23,924 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 474 places, 984 transitions, 28034 flow [2021-03-25 09:40:23,924 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 474 places, 984 transitions, 28034 flow [2021-03-25 09:40:23,936 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 474 places, 984 transitions, 28034 flow [2021-03-25 09:40:26,318 INFO L129 PetriNetUnfolder]: 2233/8959 cut-off events. [2021-03-25 09:40:26,318 INFO L130 PetriNetUnfolder]: For 384987/385976 co-relation queries the response was YES. [2021-03-25 09:40:26,435 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85024 conditions, 8959 events. 2233/8959 cut-off events. For 384987/385976 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 113867 event pairs, 747 based on Foata normal form. 276/8843 useless extension candidates. Maximal degree in co-relation 84595. Up to 1285 conditions per place. [2021-03-25 09:40:26,557 INFO L142 LiptonReduction]: Number of co-enabled transitions 4458 [2021-03-25 09:40:35,553 INFO L154 LiptonReduction]: Checked pairs total: 28 [2021-03-25 09:40:35,553 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 09:40:35,554 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 11630 [2021-03-25 09:40:35,554 INFO L480 AbstractCegarLoop]: Abstraction has has 474 places, 984 transitions, 28034 flow [2021-03-25 09:40:35,554 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 47.72727272727273) internal successors, (525), 11 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:40:35,554 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:40:35,554 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] [2021-03-25 09:40:35,554 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-03-25 09:40:35,554 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:40:35,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:40:35,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1948028539, now seen corresponding path program 1 times [2021-03-25 09:40:35,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:40:35,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005619556] [2021-03-25 09:40:35,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:40:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:40:35,571 INFO L142 QuantifierPusher]: treesize reduction 23, result has 42.5 percent of original size [2021-03-25 09:40:35,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 09:40:35,583 INFO L142 QuantifierPusher]: treesize reduction 29, result has 19.4 percent of original size [2021-03-25 09:40:35,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:40:35,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:40:35,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:40:35,592 INFO L142 QuantifierPusher]: treesize reduction 7, result has 68.2 percent of original size [2021-03-25 09:40:35,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 09:40:35,596 INFO L142 QuantifierPusher]: treesize reduction 14, result has 62.2 percent of original size [2021-03-25 09:40:35,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-25 09:40:35,600 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-25 09:40:35,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 09:40:35,611 INFO L142 QuantifierPusher]: treesize reduction 8, result has 46.7 percent of original size [2021-03-25 09:40:35,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:40:35,619 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-25 09:40:35,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:40:35,627 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:40:35,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:40:35,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:40:35,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005619556] [2021-03-25 09:40:35,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:40:35,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 09:40:35,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777479109] [2021-03-25 09:40:35,628 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 09:40:35,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:40:35,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 09:40:35,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-03-25 09:40:35,629 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 392 [2021-03-25 09:40:35,629 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 984 transitions, 28034 flow. Second operand has 7 states, 7 states have (on average 69.42857142857143) internal successors, (486), 7 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:40:35,629 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:40:35,630 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 392 [2021-03-25 09:40:35,630 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:40:40,201 INFO L129 PetriNetUnfolder]: 2662/9695 cut-off events. [2021-03-25 09:40:40,202 INFO L130 PetriNetUnfolder]: For 447068/447781 co-relation queries the response was YES. [2021-03-25 09:40:40,328 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97215 conditions, 9695 events. 2662/9695 cut-off events. For 447068/447781 co-relation queries the response was YES. Maximal size of possible extension queue 850. Compared 120172 event pairs, 816 based on Foata normal form. 154/9505 useless extension candidates. Maximal degree in co-relation 96790. Up to 2638 conditions per place. [2021-03-25 09:40:40,364 INFO L132 encePairwiseOnDemand]: 309/392 looper letters, 488 selfloop transitions, 256 changer transitions 6/1030 dead transitions. [2021-03-25 09:40:40,365 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 1030 transitions, 30627 flow [2021-03-25 09:40:40,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-25 09:40:40,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-25 09:40:40,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 619 transitions. [2021-03-25 09:40:40,366 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.22558309037900875 [2021-03-25 09:40:40,366 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 619 transitions. [2021-03-25 09:40:40,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 619 transitions. [2021-03-25 09:40:40,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:40:40,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 619 transitions. [2021-03-25 09:40:40,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.42857142857143) internal successors, (619), 7 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:40:40,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 392.0) internal successors, (3136), 8 states have internal predecessors, (3136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:40:40,368 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 392.0) internal successors, (3136), 8 states have internal predecessors, (3136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:40:40,368 INFO L185 Difference]: Start difference. First operand has 474 places, 984 transitions, 28034 flow. Second operand 7 states and 619 transitions. [2021-03-25 09:40:40,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 1030 transitions, 30627 flow [2021-03-25 09:40:43,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 1030 transitions, 30473 flow, removed 17 selfloop flow, removed 4 redundant places. [2021-03-25 09:40:43,228 INFO L241 Difference]: Finished difference. Result has 477 places, 980 transitions, 28314 flow [2021-03-25 09:40:43,229 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=392, PETRI_DIFFERENCE_MINUEND_FLOW=27882, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=984, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=256, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=728, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=28314, PETRI_PLACES=477, PETRI_TRANSITIONS=980} [2021-03-25 09:40:43,229 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 423 predicate places. [2021-03-25 09:40:43,229 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:40:43,229 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 477 places, 980 transitions, 28314 flow [2021-03-25 09:40:43,229 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 477 places, 980 transitions, 28314 flow [2021-03-25 09:40:43,241 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 477 places, 980 transitions, 28314 flow [2021-03-25 09:40:45,760 INFO L129 PetriNetUnfolder]: 2193/8960 cut-off events. [2021-03-25 09:40:45,761 INFO L130 PetriNetUnfolder]: For 386958/387954 co-relation queries the response was YES. [2021-03-25 09:40:45,875 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85183 conditions, 8960 events. 2193/8960 cut-off events. For 386958/387954 co-relation queries the response was YES. Maximal size of possible extension queue 803. Compared 114747 event pairs, 713 based on Foata normal form. 286/8879 useless extension candidates. Maximal degree in co-relation 84751. Up to 1324 conditions per place. [2021-03-25 09:40:45,993 INFO L142 LiptonReduction]: Number of co-enabled transitions 4438 [2021-03-25 09:41:03,342 INFO L154 LiptonReduction]: Checked pairs total: 236 [2021-03-25 09:41:03,343 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 09:41:03,343 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 20114 [2021-03-25 09:41:03,343 INFO L480 AbstractCegarLoop]: Abstraction has has 477 places, 980 transitions, 28316 flow [2021-03-25 09:41:03,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 69.42857142857143) internal successors, (486), 7 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:41:03,343 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:41:03,343 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] [2021-03-25 09:41:03,343 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-03-25 09:41:03,343 INFO L428 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:41:03,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:41:03,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1388877333, now seen corresponding path program 2 times [2021-03-25 09:41:03,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:41:03,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813979682] [2021-03-25 09:41:03,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:41:03,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:41:03,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:41:03,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 09:41:03,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:41:03,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 09:41:03,391 INFO L142 QuantifierPusher]: treesize reduction 13, result has 59.4 percent of original size [2021-03-25 09:41:03,391 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 09:41:03,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:41:03,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 09:41:03,400 INFO L142 QuantifierPusher]: treesize reduction 7, result has 58.8 percent of original size [2021-03-25 09:41:03,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:41:03,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:41:03,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 09:41:03,417 INFO L142 QuantifierPusher]: treesize reduction 8, result has 69.2 percent of original size [2021-03-25 09:41:03,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 09:41:03,434 INFO L142 QuantifierPusher]: treesize reduction 26, result has 40.9 percent of original size [2021-03-25 09:41:03,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 09:41:03,455 INFO L142 QuantifierPusher]: treesize reduction 15, result has 59.5 percent of original size [2021-03-25 09:41:03,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-25 09:41:03,478 INFO L142 QuantifierPusher]: treesize reduction 8, result has 69.2 percent of original size [2021-03-25 09:41:03,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-25 09:41:03,492 INFO L142 QuantifierPusher]: treesize reduction 15, result has 51.6 percent of original size [2021-03-25 09:41:03,492 INFO L147 QuantifierPusher]: treesize reduction 5, result has 68.8 percent of original size 11 [2021-03-25 09:41:03,511 INFO L142 QuantifierPusher]: treesize reduction 8, result has 60.0 percent of original size [2021-03-25 09:41:03,511 INFO L147 QuantifierPusher]: treesize reduction 4, result has 66.7 percent of original size 8 [2021-03-25 09:41:03,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:41:03,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:41:03,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:41:03,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813979682] [2021-03-25 09:41:03,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:41:03,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-25 09:41:03,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288629009] [2021-03-25 09:41:03,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-25 09:41:03,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:41:03,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-25 09:41:03,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-03-25 09:41:03,531 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 393 [2021-03-25 09:41:03,531 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 980 transitions, 28316 flow. Second operand has 11 states, 11 states have (on average 47.72727272727273) internal successors, (525), 11 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:41:03,531 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:41:03,531 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 393 [2021-03-25 09:41:03,531 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:41:08,954 INFO L129 PetriNetUnfolder]: 2802/10073 cut-off events. [2021-03-25 09:41:08,954 INFO L130 PetriNetUnfolder]: For 471668/472319 co-relation queries the response was YES. [2021-03-25 09:41:09,242 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102323 conditions, 10073 events. 2802/10073 cut-off events. For 471668/472319 co-relation queries the response was YES. Maximal size of possible extension queue 884. Compared 124869 event pairs, 1160 based on Foata normal form. 90/9813 useless extension candidates. Maximal degree in co-relation 101888. Up to 5354 conditions per place. [2021-03-25 09:41:09,278 INFO L132 encePairwiseOnDemand]: 367/393 looper letters, 896 selfloop transitions, 61 changer transitions 32/1043 dead transitions. [2021-03-25 09:41:09,279 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 1043 transitions, 32032 flow [2021-03-25 09:41:09,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-25 09:41:09,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-03-25 09:41:09,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 835 transitions. [2021-03-25 09:41:09,280 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.15176299527444564 [2021-03-25 09:41:09,280 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 835 transitions. [2021-03-25 09:41:09,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 835 transitions. [2021-03-25 09:41:09,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:41:09,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 835 transitions. [2021-03-25 09:41:09,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 59.642857142857146) internal successors, (835), 14 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:41:09,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 393.0) internal successors, (5895), 15 states have internal predecessors, (5895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:41:09,283 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 393.0) internal successors, (5895), 15 states have internal predecessors, (5895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:41:09,283 INFO L185 Difference]: Start difference. First operand has 477 places, 980 transitions, 28316 flow. Second operand 14 states and 835 transitions. [2021-03-25 09:41:09,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 1043 transitions, 32032 flow [2021-03-25 09:41:12,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 1043 transitions, 31767 flow, removed 20 selfloop flow, removed 4 redundant places. [2021-03-25 09:41:12,259 INFO L241 Difference]: Finished difference. Result has 494 places, 988 transitions, 28480 flow [2021-03-25 09:41:12,259 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=393, PETRI_DIFFERENCE_MINUEND_FLOW=27830, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=972, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=915, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=28480, PETRI_PLACES=494, PETRI_TRANSITIONS=988} [2021-03-25 09:41:12,260 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 440 predicate places. [2021-03-25 09:41:12,260 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:41:12,260 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 494 places, 988 transitions, 28480 flow [2021-03-25 09:41:12,260 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 494 places, 988 transitions, 28480 flow [2021-03-25 09:41:12,272 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 493 places, 988 transitions, 28480 flow [2021-03-25 09:41:14,811 INFO L129 PetriNetUnfolder]: 2154/8815 cut-off events. [2021-03-25 09:41:14,811 INFO L130 PetriNetUnfolder]: For 391230/392224 co-relation queries the response was YES. [2021-03-25 09:41:14,927 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84021 conditions, 8815 events. 2154/8815 cut-off events. For 391230/392224 co-relation queries the response was YES. Maximal size of possible extension queue 788. Compared 112619 event pairs, 737 based on Foata normal form. 250/8688 useless extension candidates. Maximal degree in co-relation 83588. Up to 1259 conditions per place. [2021-03-25 09:41:15,046 INFO L142 LiptonReduction]: Number of co-enabled transitions 4458 [2021-03-25 09:41:31,218 INFO L154 LiptonReduction]: Checked pairs total: 532 [2021-03-25 09:41:31,218 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-25 09:41:31,218 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 18958 [2021-03-25 09:41:31,218 INFO L480 AbstractCegarLoop]: Abstraction has has 493 places, 988 transitions, 28487 flow [2021-03-25 09:41:31,219 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 47.72727272727273) internal successors, (525), 11 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:41:31,219 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:41:31,219 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] [2021-03-25 09:41:31,219 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-03-25 09:41:31,219 INFO L428 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:41:31,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:41:31,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1001384365, now seen corresponding path program 1 times [2021-03-25 09:41:31,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:41:31,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14792822] [2021-03-25 09:41:31,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:41:31,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:41:31,235 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:41:31,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 09:41:31,248 INFO L142 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-03-25 09:41:31,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 09:41:31,251 INFO L142 QuantifierPusher]: treesize reduction 6, result has 68.4 percent of original size [2021-03-25 09:41:31,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-25 09:41:31,254 INFO L142 QuantifierPusher]: treesize reduction 61, result has 16.4 percent of original size [2021-03-25 09:41:31,254 INFO L147 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size 7 [2021-03-25 09:41:31,263 INFO L142 QuantifierPusher]: treesize reduction 103, result has 18.9 percent of original size [2021-03-25 09:41:31,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-25 09:41:31,267 INFO L142 QuantifierPusher]: treesize reduction 46, result has 27.0 percent of original size [2021-03-25 09:41:31,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 09:41:31,278 INFO L142 QuantifierPusher]: treesize reduction 6, result has 60.0 percent of original size [2021-03-25 09:41:31,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 09:41:31,288 INFO L142 QuantifierPusher]: treesize reduction 10, result has 47.4 percent of original size [2021-03-25 09:41:31,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 09:41:31,296 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-03-25 09:41:31,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:41:31,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:41:31,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:41:31,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:41:31,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14792822] [2021-03-25 09:41:31,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:41:31,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 09:41:31,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833861540] [2021-03-25 09:41:31,298 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-25 09:41:31,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:41:31,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-25 09:41:31,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-03-25 09:41:31,299 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 397 [2021-03-25 09:41:31,300 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 988 transitions, 28487 flow. Second operand has 7 states, 7 states have (on average 48.714285714285715) internal successors, (341), 7 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:41:31,300 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:41:31,300 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 397 [2021-03-25 09:41:31,300 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:41:36,117 INFO L129 PetriNetUnfolder]: 2660/9545 cut-off events. [2021-03-25 09:41:36,117 INFO L130 PetriNetUnfolder]: For 467743/468360 co-relation queries the response was YES. [2021-03-25 09:41:36,258 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98134 conditions, 9545 events. 2660/9545 cut-off events. For 467743/468360 co-relation queries the response was YES. Maximal size of possible extension queue 820. Compared 116920 event pairs, 1056 based on Foata normal form. 93/9324 useless extension candidates. Maximal degree in co-relation 97700. Up to 5196 conditions per place. [2021-03-25 09:41:36,295 INFO L132 encePairwiseOnDemand]: 377/397 looper letters, 870 selfloop transitions, 66 changer transitions 24/1014 dead transitions. [2021-03-25 09:41:36,296 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 1014 transitions, 30958 flow [2021-03-25 09:41:36,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 09:41:36,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 09:41:36,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 537 transitions. [2021-03-25 09:41:36,297 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.16908060453400503 [2021-03-25 09:41:36,297 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 537 transitions. [2021-03-25 09:41:36,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 537 transitions. [2021-03-25 09:41:36,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:41:36,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 537 transitions. [2021-03-25 09:41:36,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 67.125) internal successors, (537), 8 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:41:36,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 397.0) internal successors, (3573), 9 states have internal predecessors, (3573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:41:36,299 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 397.0) internal successors, (3573), 9 states have internal predecessors, (3573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:41:36,300 INFO L185 Difference]: Start difference. First operand has 493 places, 988 transitions, 28487 flow. Second operand 8 states and 537 transitions. [2021-03-25 09:41:36,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 1014 transitions, 30958 flow [2021-03-25 09:41:39,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 1014 transitions, 30757 flow, removed 78 selfloop flow, removed 3 redundant places. [2021-03-25 09:41:39,325 INFO L241 Difference]: Finished difference. Result has 500 places, 973 transitions, 27930 flow [2021-03-25 09:41:39,325 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=28124, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=982, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=918, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=27930, PETRI_PLACES=500, PETRI_TRANSITIONS=973} [2021-03-25 09:41:39,325 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 446 predicate places. [2021-03-25 09:41:39,325 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:41:39,325 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 500 places, 973 transitions, 27930 flow [2021-03-25 09:41:39,326 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 500 places, 973 transitions, 27930 flow [2021-03-25 09:41:39,334 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 498 places, 973 transitions, 27930 flow [2021-03-25 09:41:41,714 INFO L129 PetriNetUnfolder]: 2101/8498 cut-off events. [2021-03-25 09:41:41,714 INFO L130 PetriNetUnfolder]: For 375347/376329 co-relation queries the response was YES. [2021-03-25 09:41:41,846 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81550 conditions, 8498 events. 2101/8498 cut-off events. For 375347/376329 co-relation queries the response was YES. Maximal size of possible extension queue 754. Compared 107271 event pairs, 683 based on Foata normal form. 247/8381 useless extension candidates. Maximal degree in co-relation 81146. Up to 1236 conditions per place. [2021-03-25 09:41:42,129 INFO L142 LiptonReduction]: Number of co-enabled transitions 4370 [2021-03-25 09:41:55,682 INFO L154 LiptonReduction]: Checked pairs total: 591 [2021-03-25 09:41:55,682 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-25 09:41:55,683 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 16358 [2021-03-25 09:41:55,683 INFO L480 AbstractCegarLoop]: Abstraction has has 498 places, 973 transitions, 27940 flow [2021-03-25 09:41:55,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 48.714285714285715) internal successors, (341), 7 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:41:55,683 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:41:55,683 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] [2021-03-25 09:41:55,683 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-03-25 09:41:55,683 INFO L428 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:41:55,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:41:55,683 INFO L82 PathProgramCache]: Analyzing trace with hash -918391811, now seen corresponding path program 3 times [2021-03-25 09:41:55,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:41:55,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107071287] [2021-03-25 09:41:55,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:41:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:41:55,708 INFO L142 QuantifierPusher]: treesize reduction 22, result has 56.9 percent of original size [2021-03-25 09:41:55,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-25 09:41:55,732 INFO L142 QuantifierPusher]: treesize reduction 30, result has 38.8 percent of original size [2021-03-25 09:41:55,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-25 09:41:55,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:41:55,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 09:41:55,748 INFO L142 QuantifierPusher]: treesize reduction 20, result has 60.0 percent of original size [2021-03-25 09:41:55,749 INFO L147 QuantifierPusher]: treesize reduction 7, result has 76.7 percent of original size 23 [2021-03-25 09:41:55,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:41:55,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-25 09:41:55,764 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:41:55,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-25 09:41:55,771 INFO L142 QuantifierPusher]: treesize reduction 7, result has 58.8 percent of original size [2021-03-25 09:41:55,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-25 09:41:55,779 INFO L142 QuantifierPusher]: treesize reduction 26, result has 38.1 percent of original size [2021-03-25 09:41:55,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-25 09:41:55,785 INFO L142 QuantifierPusher]: treesize reduction 15, result has 53.1 percent of original size [2021-03-25 09:41:55,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-25 09:41:55,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:41:55,797 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:41:55,805 INFO L142 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-03-25 09:41:55,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:41:55,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:41:55,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 09:41:55,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:41:55,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107071287] [2021-03-25 09:41:55,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:41:55,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-25 09:41:55,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622734963] [2021-03-25 09:41:55,815 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-25 09:41:55,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:41:55,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-25 09:41:55,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-03-25 09:41:55,816 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 402 [2021-03-25 09:41:55,816 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 973 transitions, 27940 flow. Second operand has 10 states, 10 states have (on average 47.9) internal successors, (479), 10 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:41:55,816 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:41:55,816 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 402 [2021-03-25 09:41:55,816 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:42:01,036 INFO L129 PetriNetUnfolder]: 2646/9444 cut-off events. [2021-03-25 09:42:01,036 INFO L130 PetriNetUnfolder]: For 457636/458285 co-relation queries the response was YES. [2021-03-25 09:42:01,183 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97491 conditions, 9444 events. 2646/9444 cut-off events. For 457636/458285 co-relation queries the response was YES. Maximal size of possible extension queue 798. Compared 115300 event pairs, 1108 based on Foata normal form. 69/9207 useless extension candidates. Maximal degree in co-relation 97048. Up to 5007 conditions per place. [2021-03-25 09:42:01,220 INFO L132 encePairwiseOnDemand]: 376/402 looper letters, 895 selfloop transitions, 49 changer transitions 26/1024 dead transitions. [2021-03-25 09:42:01,220 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 1024 transitions, 31244 flow [2021-03-25 09:42:01,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 09:42:01,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 09:42:01,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 542 transitions. [2021-03-25 09:42:01,221 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.1685323383084577 [2021-03-25 09:42:01,222 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 542 transitions. [2021-03-25 09:42:01,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 542 transitions. [2021-03-25 09:42:01,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:42:01,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 542 transitions. [2021-03-25 09:42:01,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 67.75) internal successors, (542), 8 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:42:01,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 402.0) internal successors, (3618), 9 states have internal predecessors, (3618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:42:01,223 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 402.0) internal successors, (3618), 9 states have internal predecessors, (3618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:42:01,224 INFO L185 Difference]: Start difference. First operand has 498 places, 973 transitions, 27940 flow. Second operand 8 states and 542 transitions. [2021-03-25 09:42:01,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 1024 transitions, 31244 flow [2021-03-25 09:42:04,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 1024 transitions, 30848 flow, removed 39 selfloop flow, removed 7 redundant places. [2021-03-25 09:42:04,211 INFO L241 Difference]: Finished difference. Result has 502 places, 964 transitions, 27400 flow [2021-03-25 09:42:04,211 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=402, PETRI_DIFFERENCE_MINUEND_FLOW=27560, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=973, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=924, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=27400, PETRI_PLACES=502, PETRI_TRANSITIONS=964} [2021-03-25 09:42:04,212 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 448 predicate places. [2021-03-25 09:42:04,212 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:42:04,212 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 502 places, 964 transitions, 27400 flow [2021-03-25 09:42:04,212 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 502 places, 964 transitions, 27400 flow [2021-03-25 09:42:04,220 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 502 places, 964 transitions, 27400 flow [2021-03-25 09:42:06,502 INFO L129 PetriNetUnfolder]: 2042/8361 cut-off events. [2021-03-25 09:42:06,502 INFO L130 PetriNetUnfolder]: For 367042/368067 co-relation queries the response was YES. [2021-03-25 09:42:06,625 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79974 conditions, 8361 events. 2042/8361 cut-off events. For 367042/368067 co-relation queries the response was YES. Maximal size of possible extension queue 727. Compared 105325 event pairs, 654 based on Foata normal form. 253/8277 useless extension candidates. Maximal degree in co-relation 79584. Up to 1206 conditions per place. [2021-03-25 09:42:06,918 INFO L142 LiptonReduction]: Number of co-enabled transitions 4328 [2021-03-25 09:42:19,796 INFO L154 LiptonReduction]: Checked pairs total: 266 [2021-03-25 09:42:19,796 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 09:42:19,796 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 15584 [2021-03-25 09:42:19,796 INFO L480 AbstractCegarLoop]: Abstraction has has 502 places, 964 transitions, 27402 flow [2021-03-25 09:42:19,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 47.9) internal successors, (479), 10 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:42:19,797 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 09:42:19,797 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] [2021-03-25 09:42:19,797 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-03-25 09:42:19,797 INFO L428 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 09:42:19,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 09:42:19,797 INFO L82 PathProgramCache]: Analyzing trace with hash 10432270, now seen corresponding path program 1 times [2021-03-25 09:42:19,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 09:42:19,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545974815] [2021-03-25 09:42:19,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 09:42:19,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 09:42:19,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:42:19,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:42:19,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:42:19,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:42:19,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:42:19,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:42:19,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:42:19,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:42:19,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 09:42:19,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:42:19,846 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-25 09:42:19,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 09:42:19,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 09:42:19,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545974815] [2021-03-25 09:42:19,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 09:42:19,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 09:42:19,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418055345] [2021-03-25 09:42:19,864 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 09:42:19,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 09:42:19,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 09:42:19,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-25 09:42:19,866 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 381 out of 403 [2021-03-25 09:42:19,867 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 964 transitions, 27402 flow. Second operand has 8 states, 8 states have (on average 381.875) internal successors, (3055), 8 states have internal predecessors, (3055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:42:19,867 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 09:42:19,867 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 381 of 403 [2021-03-25 09:42:19,868 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 09:42:23,821 INFO L129 PetriNetUnfolder]: 2115/8490 cut-off events. [2021-03-25 09:42:23,821 INFO L130 PetriNetUnfolder]: For 362516/363367 co-relation queries the response was YES. [2021-03-25 09:42:23,945 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81763 conditions, 8490 events. 2115/8490 cut-off events. For 362516/363367 co-relation queries the response was YES. Maximal size of possible extension queue 716. Compared 106146 event pairs, 724 based on Foata normal form. 231/8368 useless extension candidates. Maximal degree in co-relation 81296. Up to 1186 conditions per place. [2021-03-25 09:42:23,966 INFO L132 encePairwiseOnDemand]: 387/403 looper letters, 17 selfloop transitions, 31 changer transitions 447/972 dead transitions. [2021-03-25 09:42:23,966 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 972 transitions, 27520 flow [2021-03-25 09:42:23,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-25 09:42:23,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-25 09:42:23,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3849 transitions. [2021-03-25 09:42:23,968 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9550868486352357 [2021-03-25 09:42:23,969 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3849 transitions. [2021-03-25 09:42:23,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3849 transitions. [2021-03-25 09:42:23,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 09:42:23,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3849 transitions. [2021-03-25 09:42:23,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 384.9) internal successors, (3849), 10 states have internal predecessors, (3849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:42:23,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 403.0) internal successors, (4433), 11 states have internal predecessors, (4433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:42:23,973 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 403.0) internal successors, (4433), 11 states have internal predecessors, (4433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-25 09:42:23,973 INFO L185 Difference]: Start difference. First operand has 502 places, 964 transitions, 27402 flow. Second operand 10 states and 3849 transitions. [2021-03-25 09:42:23,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 972 transitions, 27520 flow [2021-03-25 09:42:26,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 972 transitions, 27399 flow, removed 27 selfloop flow, removed 7 redundant places. [2021-03-25 09:42:26,506 INFO L241 Difference]: Finished difference. Result has 507 places, 521 transitions, 13817 flow [2021-03-25 09:42:26,507 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=403, PETRI_DIFFERENCE_MINUEND_FLOW=27247, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=963, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=934, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13817, PETRI_PLACES=507, PETRI_TRANSITIONS=521} [2021-03-25 09:42:26,507 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 453 predicate places. [2021-03-25 09:42:26,507 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 09:42:26,507 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 507 places, 521 transitions, 13817 flow [2021-03-25 09:42:26,507 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 507 places, 521 transitions, 13817 flow [2021-03-25 09:42:26,511 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 476 places, 521 transitions, 13817 flow Received shutdown request... [2021-03-25 09:42:26,703 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-03-25 09:42:26,703 WARN L545 AbstractCegarLoop]: Verification canceled [2021-03-25 09:42:26,705 WARN L224 ceAbstractionStarter]: Timeout [2021-03-25 09:42:26,706 INFO L202 PluginConnector]: Adding new model bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 09:42:26 BasicIcfg [2021-03-25 09:42:26,706 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 09:42:26,706 INFO L168 Benchmark]: Toolchain (without parser) took 822095.05 ms. Allocated memory was 255.9 MB in the beginning and 8.8 GB in the end (delta: 8.5 GB). Free memory was 236.7 MB in the beginning and 2.3 GB in the end (delta: -2.1 GB). Peak memory consumption was 6.5 GB. Max. memory is 16.0 GB. [2021-03-25 09:42:26,706 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.16 ms. Allocated memory is still 255.9 MB. Free memory was 238.0 MB in the beginning and 237.8 MB in the end (delta: 176.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 09:42:26,706 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.76 ms. Allocated memory is still 255.9 MB. Free memory was 236.7 MB in the beginning and 235.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 09:42:26,706 INFO L168 Benchmark]: Boogie Preprocessor took 13.19 ms. Allocated memory is still 255.9 MB. Free memory was 235.2 MB in the beginning and 234.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 09:42:26,707 INFO L168 Benchmark]: RCFGBuilder took 222.14 ms. Allocated memory is still 255.9 MB. Free memory was 234.1 MB in the beginning and 236.2 MB in the end (delta: -2.1 MB). Peak memory consumption was 20.4 MB. Max. memory is 16.0 GB. [2021-03-25 09:42:26,707 INFO L168 Benchmark]: TraceAbstraction took 821832.38 ms. Allocated memory was 255.9 MB in the beginning and 8.8 GB in the end (delta: 8.5 GB). Free memory was 236.2 MB in the beginning and 2.3 GB in the end (delta: -2.1 GB). Peak memory consumption was 6.5 GB. Max. memory is 16.0 GB. [2021-03-25 09:42:26,707 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 0.16 ms. Allocated memory is still 255.9 MB. Free memory was 238.0 MB in the beginning and 237.8 MB in the end (delta: 176.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.76 ms. Allocated memory is still 255.9 MB. Free memory was 236.7 MB in the beginning and 235.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.19 ms. Allocated memory is still 255.9 MB. Free memory was 235.2 MB in the beginning and 234.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 222.14 ms. Allocated memory is still 255.9 MB. Free memory was 234.1 MB in the beginning and 236.2 MB in the end (delta: -2.1 MB). Peak memory consumption was 20.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 821832.38 ms. Allocated memory was 255.9 MB in the beginning and 8.8 GB in the end (delta: 8.5 GB). Free memory was 236.2 MB in the beginning and 2.3 GB in the end (delta: -2.1 GB). Peak memory consumption was 6.5 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 186.2ms, 58 PlacesBefore, 54 PlacesAfterwards, 48 TransitionsBefore, 44 TransitionsAfterwards, 1170 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 3620 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 981, positive: 850, positive conditional: 0, positive unconditional: 850, negative: 131, negative conditional: 0, negative unconditional: 131, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 280, positive: 247, positive conditional: 0, positive unconditional: 247, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 280, positive: 247, positive conditional: 0, positive unconditional: 247, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 981, positive: 603, positive conditional: 0, positive unconditional: 603, negative: 98, negative conditional: 0, negative unconditional: 98, unknown: 280, unknown conditional: 0, unknown unconditional: 280] , Statistics on independence cache: Total cache size (in pairs): 183, Positive cache size: 153, Positive conditional cache size: 0, Positive unconditional cache size: 153, Negative cache size: 30, Negative conditional cache size: 0, Negative unconditional cache size: 30 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 79.7ms, 62 PlacesBefore, 60 PlacesAfterwards, 60 TransitionsBefore, 60 TransitionsAfterwards, 1326 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 4265 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1236, positive: 1097, positive conditional: 0, positive unconditional: 1097, negative: 139, negative conditional: 0, negative unconditional: 139, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 106, positive: 103, positive conditional: 0, positive unconditional: 103, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 106, positive: 103, positive conditional: 0, positive unconditional: 103, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1236, positive: 994, positive conditional: 0, positive unconditional: 994, negative: 136, negative conditional: 0, negative unconditional: 136, unknown: 106, unknown conditional: 0, unknown unconditional: 106] , Statistics on independence cache: Total cache size (in pairs): 274, Positive cache size: 245, Positive conditional cache size: 0, Positive unconditional cache size: 245, Negative cache size: 29, Negative conditional cache size: 0, Negative unconditional cache size: 29 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 84.5ms, 71 PlacesBefore, 71 PlacesAfterwards, 82 TransitionsBefore, 82 TransitionsAfterwards, 1832 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 2051 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 525, positive: 472, positive conditional: 0, positive unconditional: 472, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 36, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 36, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 525, positive: 442, positive conditional: 0, positive unconditional: 442, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 36, unknown conditional: 0, unknown unconditional: 36] , Statistics on independence cache: Total cache size (in pairs): 310, Positive cache size: 275, Positive conditional cache size: 0, Positive unconditional cache size: 275, Negative cache size: 35, Negative conditional cache size: 0, Negative unconditional cache size: 35 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 200.8ms, 74 PlacesBefore, 74 PlacesAfterwards, 82 TransitionsBefore, 82 TransitionsAfterwards, 1708 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 3112 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 780, positive: 698, positive conditional: 0, positive unconditional: 698, negative: 82, negative conditional: 0, negative unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 34, positive: 34, positive conditional: 0, positive unconditional: 34, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 34, positive: 34, positive conditional: 0, positive unconditional: 34, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 780, positive: 664, positive conditional: 0, positive unconditional: 664, negative: 82, negative conditional: 0, negative unconditional: 82, unknown: 34, unknown conditional: 0, unknown unconditional: 34] , Statistics on independence cache: Total cache size (in pairs): 341, Positive cache size: 307, Positive conditional cache size: 0, Positive unconditional cache size: 307, Negative cache size: 34, Negative conditional cache size: 0, Negative unconditional cache size: 34 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 209.0ms, 75 PlacesBefore, 74 PlacesAfterwards, 82 TransitionsBefore, 81 TransitionsAfterwards, 1684 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 2552 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 558, positive: 492, positive conditional: 0, positive unconditional: 492, negative: 66, negative conditional: 0, negative unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 47, positive: 46, positive conditional: 0, positive unconditional: 46, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 47, positive: 46, positive conditional: 0, positive unconditional: 46, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 558, positive: 446, positive conditional: 0, positive unconditional: 446, negative: 65, negative conditional: 0, negative unconditional: 65, unknown: 47, unknown conditional: 0, unknown unconditional: 47] , Statistics on independence cache: Total cache size (in pairs): 332, Positive cache size: 303, Positive conditional cache size: 0, Positive unconditional cache size: 303, Negative cache size: 29, Negative conditional cache size: 0, Negative unconditional cache size: 29 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 488.6ms, 90 PlacesBefore, 90 PlacesAfterwards, 116 TransitionsBefore, 116 TransitionsAfterwards, 1952 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 3564 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 572, positive: 492, positive conditional: 0, positive unconditional: 492, negative: 80, negative conditional: 0, negative unconditional: 80, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 12, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 12, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 572, positive: 484, positive conditional: 0, positive unconditional: 484, negative: 76, negative conditional: 0, negative unconditional: 76, unknown: 12, unknown conditional: 0, unknown unconditional: 12] , Statistics on independence cache: Total cache size (in pairs): 343, Positive cache size: 312, Positive conditional cache size: 0, Positive unconditional cache size: 312, Negative cache size: 31, Negative conditional cache size: 0, Negative unconditional cache size: 31 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 588.0ms, 93 PlacesBefore, 93 PlacesAfterwards, 114 TransitionsBefore, 114 TransitionsAfterwards, 1840 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 5 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 9 TotalNumberOfCompositions, 3304 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 551, positive: 477, positive conditional: 0, positive unconditional: 477, negative: 74, negative conditional: 0, negative unconditional: 74, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 48, positive: 43, positive conditional: 0, positive unconditional: 43, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 48, positive: 43, positive conditional: 0, positive unconditional: 43, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 551, positive: 434, positive conditional: 0, positive unconditional: 434, negative: 69, negative conditional: 0, negative unconditional: 69, unknown: 48, unknown conditional: 0, unknown unconditional: 48] , Statistics on independence cache: Total cache size (in pairs): 379, Positive cache size: 354, Positive conditional cache size: 0, Positive unconditional cache size: 354, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2209.0ms, 108 PlacesBefore, 107 PlacesAfterwards, 186 TransitionsBefore, 185 TransitionsAfterwards, 2576 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 6 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 26 ConcurrentYvCompositions, 0 ChoiceCompositions, 32 TotalNumberOfCompositions, 3021 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1484, positive: 1452, positive conditional: 0, positive unconditional: 1452, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 36, positive: 32, positive conditional: 0, positive unconditional: 32, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 36, positive: 32, positive conditional: 0, positive unconditional: 32, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1484, positive: 1420, positive conditional: 0, positive unconditional: 1420, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 36, unknown conditional: 0, unknown unconditional: 36] , Statistics on independence cache: Total cache size (in pairs): 392, Positive cache size: 371, Positive conditional cache size: 0, Positive unconditional cache size: 371, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1747.5ms, 119 PlacesBefore, 117 PlacesAfterwards, 198 TransitionsBefore, 196 TransitionsAfterwards, 2638 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 7 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 13 TotalNumberOfCompositions, 2931 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 855, positive: 788, positive conditional: 0, positive unconditional: 788, negative: 67, negative conditional: 0, negative unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 73, positive: 70, positive conditional: 0, positive unconditional: 70, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 73, positive: 70, positive conditional: 0, positive unconditional: 70, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 855, positive: 718, positive conditional: 0, positive unconditional: 718, negative: 64, negative conditional: 0, negative unconditional: 64, unknown: 73, unknown conditional: 0, unknown unconditional: 73] , Statistics on independence cache: Total cache size (in pairs): 388, Positive cache size: 369, Positive conditional cache size: 0, Positive unconditional cache size: 369, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4218.4ms, 133 PlacesBefore, 133 PlacesAfterwards, 258 TransitionsBefore, 258 TransitionsAfterwards, 3474 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 16 ConcurrentYvCompositions, 0 ChoiceCompositions, 21 TotalNumberOfCompositions, 1739 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1128, positive: 1114, positive conditional: 0, positive unconditional: 1114, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 22, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 22, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1128, positive: 1095, positive conditional: 0, positive unconditional: 1095, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 22, unknown conditional: 0, unknown unconditional: 22] , Statistics on independence cache: Total cache size (in pairs): 422, Positive cache size: 402, Positive conditional cache size: 0, Positive unconditional cache size: 402, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5721.5ms, 146 PlacesBefore, 142 PlacesAfterwards, 299 TransitionsBefore, 299 TransitionsAfterwards, 3834 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 0 ChoiceCompositions, 11 TotalNumberOfCompositions, 1862 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 725, positive: 707, positive conditional: 0, positive unconditional: 707, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 14, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 14, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 725, positive: 693, positive conditional: 0, positive unconditional: 693, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 14, unknown conditional: 0, unknown unconditional: 14] , Statistics on independence cache: Total cache size (in pairs): 437, Positive cache size: 417, Positive conditional cache size: 0, Positive unconditional cache size: 417, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 15822.8ms, 171 PlacesBefore, 170 PlacesAfterwards, 515 TransitionsBefore, 514 TransitionsAfterwards, 5616 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 13 ConcurrentYvCompositions, 0 ChoiceCompositions, 19 TotalNumberOfCompositions, 1588 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1588, positive: 1588, positive conditional: 0, positive unconditional: 1588, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 19, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 19, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1588, positive: 1569, positive conditional: 0, positive unconditional: 1569, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 19, unknown conditional: 0, unknown unconditional: 19] , Statistics on independence cache: Total cache size (in pairs): 434, Positive cache size: 416, Positive conditional cache size: 0, Positive unconditional cache size: 416, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 21336.1ms, 194 PlacesBefore, 194 PlacesAfterwards, 616 TransitionsBefore, 616 TransitionsAfterwards, 5970 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 14 TrivialYvCompositions, 11 ConcurrentYvCompositions, 0 ChoiceCompositions, 26 TotalNumberOfCompositions, 2896 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2896, positive: 2896, positive conditional: 0, positive unconditional: 2896, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 19, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 19, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2896, positive: 2877, positive conditional: 0, positive unconditional: 2877, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 19, unknown conditional: 0, unknown unconditional: 19] , Statistics on independence cache: Total cache size (in pairs): 444, Positive cache size: 426, Positive conditional cache size: 0, Positive unconditional cache size: 426, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 27834.7ms, 224 PlacesBefore, 224 PlacesAfterwards, 718 TransitionsBefore, 718 TransitionsAfterwards, 7492 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 8 TotalNumberOfCompositions, 877 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 877, positive: 877, positive conditional: 0, positive unconditional: 877, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 44, positive: 44, positive conditional: 0, positive unconditional: 44, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 44, positive: 44, positive conditional: 0, positive unconditional: 44, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 877, positive: 833, positive conditional: 0, positive unconditional: 833, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 44, unknown conditional: 0, unknown unconditional: 44] , Statistics on independence cache: Total cache size (in pairs): 470, Positive cache size: 455, Positive conditional cache size: 0, Positive unconditional cache size: 455, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 21660.4ms, 228 PlacesBefore, 226 PlacesAfterwards, 645 TransitionsBefore, 643 TransitionsAfterwards, 6630 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 465 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 465, positive: 465, positive conditional: 0, positive unconditional: 465, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 465, positive: 457, positive conditional: 0, positive unconditional: 457, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 8, unknown conditional: 0, unknown unconditional: 8] , Statistics on independence cache: Total cache size (in pairs): 427, Positive cache size: 418, Positive conditional cache size: 0, Positive unconditional cache size: 418, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 16770.0ms, 237 PlacesBefore, 237 PlacesAfterwards, 672 TransitionsBefore, 672 TransitionsAfterwards, 6374 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 6 TotalNumberOfCompositions, 687 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 687, positive: 687, positive conditional: 0, positive unconditional: 687, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 11, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 11, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 687, positive: 676, positive conditional: 0, positive unconditional: 676, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 11, unknown conditional: 0, unknown unconditional: 11] , Statistics on independence cache: Total cache size (in pairs): 434, Positive cache size: 425, Positive conditional cache size: 0, Positive unconditional cache size: 425, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 31597.9ms, 256 PlacesBefore, 253 PlacesAfterwards, 659 TransitionsBefore, 658 TransitionsAfterwards, 6952 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 407 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 407, positive: 407, positive conditional: 0, positive unconditional: 407, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 35, positive: 35, positive conditional: 0, positive unconditional: 35, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 35, positive: 35, positive conditional: 0, positive unconditional: 35, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 407, positive: 372, positive conditional: 0, positive unconditional: 372, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 35, unknown conditional: 0, unknown unconditional: 35] , Statistics on independence cache: Total cache size (in pairs): 459, Positive cache size: 450, Positive conditional cache size: 0, Positive unconditional cache size: 450, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 16785.0ms, 259 PlacesBefore, 259 PlacesAfterwards, 677 TransitionsBefore, 677 TransitionsAfterwards, 6972 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 206 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 206, positive: 206, positive conditional: 0, positive unconditional: 206, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 12, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 12, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 206, positive: 194, positive conditional: 0, positive unconditional: 194, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 12, unknown conditional: 0, unknown unconditional: 12] , Statistics on independence cache: Total cache size (in pairs): 463, Positive cache size: 455, Positive conditional cache size: 0, Positive unconditional cache size: 455, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 21036.3ms, 270 PlacesBefore, 270 PlacesAfterwards, 769 TransitionsBefore, 769 TransitionsAfterwards, 7354 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 611 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 611, positive: 611, positive conditional: 0, positive unconditional: 611, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 20, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 20, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 611, positive: 591, positive conditional: 0, positive unconditional: 591, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 20, unknown conditional: 0, unknown unconditional: 20] , Statistics on independence cache: Total cache size (in pairs): 474, Positive cache size: 466, Positive conditional cache size: 0, Positive unconditional cache size: 466, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 34209.8ms, 278 PlacesBefore, 278 PlacesAfterwards, 854 TransitionsBefore, 854 TransitionsAfterwards, 8432 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 7 ConcurrentYvCompositions, 0 ChoiceCompositions, 8 TotalNumberOfCompositions, 1085 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1085, positive: 1085, positive conditional: 0, positive unconditional: 1085, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1085, positive: 1085, positive conditional: 0, positive unconditional: 1085, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 465, Positive cache size: 457, Positive conditional cache size: 0, Positive unconditional cache size: 457, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 28609.0ms, 287 PlacesBefore, 280 PlacesAfterwards, 778 TransitionsBefore, 778 TransitionsAfterwards, 7106 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 564 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 564, positive: 564, positive conditional: 0, positive unconditional: 564, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 10, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 10, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 564, positive: 554, positive conditional: 0, positive unconditional: 554, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 10, unknown conditional: 0, unknown unconditional: 10] , Statistics on independence cache: Total cache size (in pairs): 471, Positive cache size: 463, Positive conditional cache size: 0, Positive unconditional cache size: 463, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 16735.2ms, 283 PlacesBefore, 280 PlacesAfterwards, 828 TransitionsBefore, 828 TransitionsAfterwards, 4966 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 10 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 14 TotalNumberOfCompositions, 1834 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1834, positive: 1834, positive conditional: 0, positive unconditional: 1834, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1834, positive: 1830, positive conditional: 0, positive unconditional: 1830, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 471, Positive cache size: 463, Positive conditional cache size: 0, Positive unconditional cache size: 463, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 16324.5ms, 306 PlacesBefore, 306 PlacesAfterwards, 857 TransitionsBefore, 857 TransitionsAfterwards, 4818 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 335 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 335, positive: 335, positive conditional: 0, positive unconditional: 335, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 25, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 25, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 335, positive: 310, positive conditional: 0, positive unconditional: 310, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 25, unknown conditional: 0, unknown unconditional: 25] , Statistics on independence cache: Total cache size (in pairs): 495, Positive cache size: 488, Positive conditional cache size: 0, Positive unconditional cache size: 488, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 17485.2ms, 345 PlacesBefore, 345 PlacesAfterwards, 1102 TransitionsBefore, 1102 TransitionsAfterwards, 5724 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 9 ConcurrentYvCompositions, 0 ChoiceCompositions, 16 TotalNumberOfCompositions, 2390 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2390, positive: 2390, positive conditional: 0, positive unconditional: 2390, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 24, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 24, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2390, positive: 2366, positive conditional: 0, positive unconditional: 2366, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 24, unknown conditional: 0, unknown unconditional: 24] , Statistics on independence cache: Total cache size (in pairs): 502, Positive cache size: 495, Positive conditional cache size: 0, Positive unconditional cache size: 495, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 38074.2ms, 371 PlacesBefore, 370 PlacesAfterwards, 1152 TransitionsBefore, 1151 TransitionsAfterwards, 5910 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 8 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 13 ConcurrentYvCompositions, 0 ChoiceCompositions, 28 TotalNumberOfCompositions, 3880 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3880, positive: 3880, positive conditional: 0, positive unconditional: 3880, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 27, positive: 27, positive conditional: 0, positive unconditional: 27, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 27, positive: 27, positive conditional: 0, positive unconditional: 27, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3880, positive: 3853, positive conditional: 0, positive unconditional: 3853, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 27, unknown conditional: 0, unknown unconditional: 27] , Statistics on independence cache: Total cache size (in pairs): 527, Positive cache size: 520, Positive conditional cache size: 0, Positive unconditional cache size: 520, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 23206.7ms, 377 PlacesBefore, 376 PlacesAfterwards, 1114 TransitionsBefore, 1113 TransitionsAfterwards, 5016 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 18 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 28 TotalNumberOfCompositions, 4506 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4506, positive: 4506, positive conditional: 0, positive unconditional: 4506, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 9, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 9, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4506, positive: 4497, positive conditional: 0, positive unconditional: 4497, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 9, unknown conditional: 0, unknown unconditional: 9] , Statistics on independence cache: Total cache size (in pairs): 485, Positive cache size: 479, Positive conditional cache size: 0, Positive unconditional cache size: 479, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 16543.5ms, 390 PlacesBefore, 389 PlacesAfterwards, 1110 TransitionsBefore, 1110 TransitionsAfterwards, 5060 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 10 TotalNumberOfCompositions, 1508 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1508, positive: 1508, positive conditional: 0, positive unconditional: 1508, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 9, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 9, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1508, positive: 1499, positive conditional: 0, positive unconditional: 1499, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 9, unknown conditional: 0, unknown unconditional: 9] , Statistics on independence cache: Total cache size (in pairs): 493, Positive cache size: 487, Positive conditional cache size: 0, Positive unconditional cache size: 487, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11759.3ms, 398 PlacesBefore, 393 PlacesAfterwards, 905 TransitionsBefore, 905 TransitionsAfterwards, 4106 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 143 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 143, positive: 143, positive conditional: 0, positive unconditional: 143, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 143, positive: 143, positive conditional: 0, positive unconditional: 143, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 493, Positive cache size: 487, Positive conditional cache size: 0, Positive unconditional cache size: 487, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6343.0ms, 397 PlacesBefore, 392 PlacesAfterwards, 881 TransitionsBefore, 881 TransitionsAfterwards, 4042 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 493, Positive cache size: 487, Positive conditional cache size: 0, Positive unconditional cache size: 487, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8521.9ms, 395 PlacesBefore, 382 PlacesAfterwards, 847 TransitionsBefore, 847 TransitionsAfterwards, 3866 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 462 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 454, positive: 446, positive conditional: 0, positive unconditional: 446, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 9, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 9, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 454, positive: 440, positive conditional: 0, positive unconditional: 440, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 9, unknown conditional: 0, unknown unconditional: 9] , Statistics on independence cache: Total cache size (in pairs): 500, Positive cache size: 491, Positive conditional cache size: 0, Positive unconditional cache size: 491, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11462.6ms, 389 PlacesBefore, 384 PlacesAfterwards, 734 TransitionsBefore, 734 TransitionsAfterwards, 3512 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 408 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 400, positive: 392, positive conditional: 0, positive unconditional: 392, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 33, positive: 33, positive conditional: 0, positive unconditional: 33, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 33, positive: 33, positive conditional: 0, positive unconditional: 33, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 400, positive: 359, positive conditional: 0, positive unconditional: 359, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 33, unknown conditional: 0, unknown unconditional: 33] , Statistics on independence cache: Total cache size (in pairs): 534, Positive cache size: 525, Positive conditional cache size: 0, Positive unconditional cache size: 525, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9188.6ms, 388 PlacesBefore, 387 PlacesAfterwards, 776 TransitionsBefore, 776 TransitionsAfterwards, 3676 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 452 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 452, positive: 444, positive conditional: 0, positive unconditional: 444, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 452, positive: 436, positive conditional: 0, positive unconditional: 436, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 8, unknown conditional: 0, unknown unconditional: 8] , Statistics on independence cache: Total cache size (in pairs): 543, Positive cache size: 534, Positive conditional cache size: 0, Positive unconditional cache size: 534, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5584.7ms, 394 PlacesBefore, 393 PlacesAfterwards, 769 TransitionsBefore, 769 TransitionsAfterwards, 3632 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 28 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 28, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 28, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 543, Positive cache size: 534, Positive conditional cache size: 0, Positive unconditional cache size: 534, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11073.6ms, 404 PlacesBefore, 404 PlacesAfterwards, 809 TransitionsBefore, 809 TransitionsAfterwards, 3738 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 12 TotalNumberOfCompositions, 1263 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1263, positive: 1255, positive conditional: 0, positive unconditional: 1255, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 29, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 29, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1263, positive: 1226, positive conditional: 0, positive unconditional: 1226, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 29, unknown conditional: 0, unknown unconditional: 29] , Statistics on independence cache: Total cache size (in pairs): 558, Positive cache size: 549, Positive conditional cache size: 0, Positive unconditional cache size: 549, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 16590.2ms, 423 PlacesBefore, 422 PlacesAfterwards, 811 TransitionsBefore, 811 TransitionsAfterwards, 3752 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 8 ConcurrentYvCompositions, 0 ChoiceCompositions, 10 TotalNumberOfCompositions, 1350 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1350, positive: 1338, positive conditional: 0, positive unconditional: 1338, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1350, positive: 1334, positive conditional: 0, positive unconditional: 1334, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 567, Positive cache size: 558, Positive conditional cache size: 0, Positive unconditional cache size: 558, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 14506.3ms, 445 PlacesBefore, 445 PlacesAfterwards, 952 TransitionsBefore, 952 TransitionsAfterwards, 4324 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 8 ConcurrentYvCompositions, 0 ChoiceCompositions, 14 TotalNumberOfCompositions, 2136 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2136, positive: 2128, positive conditional: 0, positive unconditional: 2128, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 25, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 25, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2136, positive: 2103, positive conditional: 0, positive unconditional: 2103, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 25, unknown conditional: 0, unknown unconditional: 25] , Statistics on independence cache: Total cache size (in pairs): 585, Positive cache size: 576, Positive conditional cache size: 0, Positive unconditional cache size: 576, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8772.0ms, 453 PlacesBefore, 453 PlacesAfterwards, 977 TransitionsBefore, 977 TransitionsAfterwards, 4404 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 28 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 28, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 28, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 585, Positive cache size: 576, Positive conditional cache size: 0, Positive unconditional cache size: 576, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 18884.8ms, 466 PlacesBefore, 466 PlacesAfterwards, 988 TransitionsBefore, 988 TransitionsAfterwards, 4488 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 373 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 373, positive: 365, positive conditional: 0, positive unconditional: 365, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 373, positive: 357, positive conditional: 0, positive unconditional: 357, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 8, unknown conditional: 0, unknown unconditional: 8] , Statistics on independence cache: Total cache size (in pairs): 592, Positive cache size: 583, Positive conditional cache size: 0, Positive unconditional cache size: 583, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11629.3ms, 474 PlacesBefore, 474 PlacesAfterwards, 984 TransitionsBefore, 984 TransitionsAfterwards, 4458 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 28 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 28, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 28, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 592, Positive cache size: 583, Positive conditional cache size: 0, Positive unconditional cache size: 583, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 20113.2ms, 477 PlacesBefore, 477 PlacesAfterwards, 980 TransitionsBefore, 980 TransitionsAfterwards, 4438 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 236 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 236, positive: 228, positive conditional: 0, positive unconditional: 228, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 236, positive: 224, positive conditional: 0, positive unconditional: 224, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 594, Positive cache size: 585, Positive conditional cache size: 0, Positive unconditional cache size: 585, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 18958.0ms, 494 PlacesBefore, 493 PlacesAfterwards, 988 TransitionsBefore, 988 TransitionsAfterwards, 4458 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 4 TotalNumberOfCompositions, 532 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 532, positive: 524, positive conditional: 0, positive unconditional: 524, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 7, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 7, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 532, positive: 517, positive conditional: 0, positive unconditional: 517, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 7, unknown conditional: 0, unknown unconditional: 7] , Statistics on independence cache: Total cache size (in pairs): 598, Positive cache size: 589, Positive conditional cache size: 0, Positive unconditional cache size: 589, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 16356.8ms, 500 PlacesBefore, 498 PlacesAfterwards, 973 TransitionsBefore, 973 TransitionsAfterwards, 4370 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 591 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 587, positive: 577, positive conditional: 0, positive unconditional: 577, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 587, positive: 574, positive conditional: 0, positive unconditional: 574, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 601, Positive cache size: 591, Positive conditional cache size: 0, Positive unconditional cache size: 591, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 15584.2ms, 502 PlacesBefore, 502 PlacesAfterwards, 964 TransitionsBefore, 964 TransitionsAfterwards, 4328 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 266 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 266, positive: 258, positive conditional: 0, positive unconditional: 258, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 7, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 7, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 266, positive: 251, positive conditional: 0, positive unconditional: 251, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 7, unknown conditional: 0, unknown unconditional: 7] , Statistics on independence cache: Total cache size (in pairs): 608, Positive cache size: 598, Positive conditional cache size: 0, Positive unconditional cache size: 598, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 82). Cancelled while PetriNetLargeBlockEncoding was applying PetriNetLargeBlockEncoding to Petri net that has 507 places, 521 transitions, 13817 flow,while LiptonReduction was applying LiptonReduction to Petri net that has 507 places, 521 transitions, 13817 flow,while PetriNetUnfolder was constructing finite prefix that currently has 10118 conditions, 851 events (160/850 cut-off events. For 58096/58221 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 9747 event pairs, 95 based on Foata normal form. 39/1114 useless extension candidates. Maximal degree in co-relation 9923. Up to 196 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 26.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: TIMEOUT, OverallTime: 821755.4ms, OverallIterations: 43, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 230922.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 299.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2010 SDtfs, 2656 SDslu, 1309 SDs, 0 SdLazy, 25514 SolverSat, 5264 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12097.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 614 GetRequests, 75 SyntacticMatches, 42 SemanticMatches, 497 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1237 ImplicationChecksByTransitivity, 6345.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=31386occurred in iteration=26, InterpolantAutomatonStates: 498, 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: 48.7ms SsaConstructionTime, 317.3ms SatisfiabilityAnalysisTime, 4738.7ms InterpolantComputationTime, 1529 NumberOfCodeBlocks, 1529 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 1486 ConstructedInterpolants, 0 QuantifiedInterpolants, 9293 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 43 InterpolantComputations, 43 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