/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-VariableLbe.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 [2021-03-24 15:05:49,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 15:05:49,378 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 15:05:49,416 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 15:05:49,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 15:05:49,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 15:05:49,421 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 15:05:49,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 15:05:49,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 15:05:49,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 15:05:49,433 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 15:05:49,434 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 15:05:49,435 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 15:05:49,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 15:05:49,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 15:05:49,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 15:05:49,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 15:05:49,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 15:05:49,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 15:05:49,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 15:05:49,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 15:05:49,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 15:05:49,454 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 15:05:49,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 15:05:49,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 15:05:49,469 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 15:05:49,470 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 15:05:49,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 15:05:49,471 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-VariableLbe.epf [2021-03-24 15:05:49,505 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 15:05:49,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 15:05:49,508 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 15:05:49,508 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 15:05:49,508 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 15:05:49,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 15:05:49,509 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 15:05:49,509 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 15:05:49,509 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 15:05:49,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 15:05:49,510 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 15:05:49,510 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 15:05:49,510 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 15:05:49,510 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 15:05:49,510 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 15:05:49,511 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 15:05:49,511 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 15:05:49,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 15:05:49,511 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 15:05:49,511 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 15:05:49,511 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 15:05:49,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 15:05:49,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 15:05:49,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 15:05:49,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 15:05:49,512 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 15:05:49,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 15:05:49,512 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 15:05:49,512 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 15:05:49,512 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 15:05:49,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 15:05:49,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 15:05:49,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 15:05:49,819 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-24 15:05:49,824 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-24 15:05:49,825 INFO L432 ainManager$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 [2021-03-24 15:05:49,837 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-3.wvr.bpl' [2021-03-24 15:05:49,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 15:05:49,875 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-24 15:05:49,877 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 15:05:49,877 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 15:05:49,877 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 15:05:49,888 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 24.03 03:05:49" (1/1) ... [2021-03-24 15:05:49,895 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 24.03 03:05:49" (1/1) ... [2021-03-24 15:05:49,902 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 15:05:49,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 15:05:49,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 15:05:49,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 15:05:49,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:05:49" (1/1) ... [2021-03-24 15:05:49,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:05:49" (1/1) ... [2021-03-24 15:05:49,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:05:49" (1/1) ... [2021-03-24 15:05:49,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:05:49" (1/1) ... [2021-03-24 15:05:49,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:05:49" (1/1) ... [2021-03-24 15:05:49,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:05:49" (1/1) ... [2021-03-24 15:05:49,927 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:05:49" (1/1) ... [2021-03-24 15:05:49,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 15:05:49,929 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 15:05:49,929 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 15:05:49,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 15:05:49,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:05:49" (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 [2021-03-24 15:05:49,984 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-24 15:05:49,985 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-24 15:05:49,985 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-24 15:05:49,985 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-24 15:05:49,985 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-24 15:05:49,985 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-24 15:05:49,985 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-24 15:05:49,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 15:05:49,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 15:05:49,986 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-03-24 15:05:49,986 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-24 15:05:49,986 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-24 15:05:49,987 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 15:05:50,182 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 15:05:50,182 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-24 15:05:50,183 INFO L202 PluginConnector]: Adding new model bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 03:05:50 BoogieIcfgContainer [2021-03-24 15:05:50,184 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 15:05:50,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 15:05:50,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 15:05:50,187 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 15:05:50,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.03 03:05:49" (1/2) ... [2021-03-24 15:05:50,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54178300 and model type bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 03:05:50, skipping insertion in model container [2021-03-24 15:05:50,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 03:05:50" (2/2) ... [2021-03-24 15:05:50,189 INFO L111 eAbstractionObserver]: Analyzing ICFG bakery-3.wvr.bpl [2021-03-24 15:05:50,194 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 15:05:50,197 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 15:05:50,198 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 15:05:50,233 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-03-24 15:05:50,277 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-24 15:05:50,309 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 15:05:50,309 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 15:05:50,309 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 15:05:50,309 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 15:05:50,309 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 15:05:50,309 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 15:05:50,310 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 15:05:50,310 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 15:05:50,319 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 63 places, 53 transitions, 130 flow [2021-03-24 15:05:50,399 INFO L129 PetriNetUnfolder]: 0/50 cut-off events. [2021-03-24 15:05:50,399 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-24 15:05:50,409 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. [2021-03-24 15:05:50,409 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 53 transitions, 130 flow [2021-03-24 15:05:50,416 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 48 transitions, 114 flow [2021-03-24 15:05:50,417 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 15:05:50,426 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 58 places, 48 transitions, 114 flow [2021-03-24 15:05:50,436 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 58 places, 48 transitions, 114 flow [2021-03-24 15:05:50,441 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 58 places, 48 transitions, 114 flow [2021-03-24 15:05:50,474 INFO L129 PetriNetUnfolder]: 0/48 cut-off events. [2021-03-24 15:05:50,475 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-24 15:05:50,475 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. [2021-03-24 15:05:50,477 INFO L142 LiptonReduction]: Number of co-enabled transitions 1170 [2021-03-24 15:05:50,575 INFO L154 LiptonReduction]: Checked pairs total: 3620 [2021-03-24 15:05:50,575 INFO L156 LiptonReduction]: Total number of compositions: 4 [2021-03-24 15:05:50,578 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 162 [2021-03-24 15:05:50,612 INFO L129 PetriNetUnfolder]: 0/43 cut-off events. [2021-03-24 15:05:50,612 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-24 15:05:50,613 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:05:50,613 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] [2021-03-24 15:05:50,614 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:05:50,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:05:50,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1193492651, now seen corresponding path program 1 times [2021-03-24 15:05:50,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:05:50,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911121418] [2021-03-24 15:05:50,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:05:50,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:05:50,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:50,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:05:50,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:50,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:05:50,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:50,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:05:50,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:50,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:05:50,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:50,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:05:50,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:50,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:05:50,958 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-24 15:05:50,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:05:50,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:05:50,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911121418] [2021-03-24 15:05:50,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:05:50,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 15:05:50,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284562591] [2021-03-24 15:05:50,989 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 15:05:50,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:05:51,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 15:05:51,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 15:05:51,009 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 57 [2021-03-24 15:05:51,013 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) [2021-03-24 15:05:51,014 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:05:51,014 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 57 [2021-03-24 15:05:51,015 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:05:51,296 INFO L129 PetriNetUnfolder]: 29/174 cut-off events. [2021-03-24 15:05:51,296 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2021-03-24 15:05:51,299 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. [2021-03-24 15:05:51,302 INFO L132 encePairwiseOnDemand]: 49/57 looper letters, 21 selfloop transitions, 15 changer transitions 2/74 dead transitions. [2021-03-24 15:05:51,302 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 74 transitions, 242 flow [2021-03-24 15:05:51,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-24 15:05:51,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-24 15:05:51,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 556 transitions. [2021-03-24 15:05:51,321 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.886762360446571 [2021-03-24 15:05:51,321 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 556 transitions. [2021-03-24 15:05:51,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 556 transitions. [2021-03-24 15:05:51,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:05:51,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 556 transitions. [2021-03-24 15:05:51,330 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) [2021-03-24 15:05:51,336 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) [2021-03-24 15:05:51,336 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) [2021-03-24 15:05:51,338 INFO L185 Difference]: Start difference. First operand has 54 places, 44 transitions, 106 flow. Second operand 11 states and 556 transitions. [2021-03-24 15:05:51,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 74 transitions, 242 flow [2021-03-24 15:05:51,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 74 transitions, 230 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-03-24 15:05:51,344 INFO L241 Difference]: Finished difference. Result has 62 places, 60 transitions, 186 flow [2021-03-24 15:05:51,345 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} [2021-03-24 15:05:51,346 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 8 predicate places. [2021-03-24 15:05:51,346 INFO L480 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 186 flow [2021-03-24 15:05:51,347 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) [2021-03-24 15:05:51,347 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:05:51,347 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] [2021-03-24 15:05:51,347 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 15:05:51,348 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:05:51,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:05:51,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1428181141, now seen corresponding path program 2 times [2021-03-24 15:05:51,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:05:51,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857195685] [2021-03-24 15:05:51,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:05:51,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:05:51,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:51,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:05:51,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:51,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:05:51,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:51,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:05:51,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:51,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 15:05:51,433 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-03-24 15:05:51,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 15:05:51,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:51,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:05:51,458 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:51,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 15:05:51,469 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:51,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:05:51,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:05:51,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857195685] [2021-03-24 15:05:51,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:05:51,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 15:05:51,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574131988] [2021-03-24 15:05:51,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:05:51,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:05:51,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:05:51,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:05:51,480 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2021-03-24 15:05:51,481 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 186 flow. Second operand has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:51,481 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:05:51,486 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2021-03-24 15:05:51,486 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:05:51,871 INFO L129 PetriNetUnfolder]: 1062/2494 cut-off events. [2021-03-24 15:05:51,871 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2021-03-24 15:05:51,880 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4711 conditions, 2494 events. 1062/2494 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 18779 event pairs, 264 based on Foata normal form. 20/2424 useless extension candidates. Maximal degree in co-relation 4694. Up to 1140 conditions per place. [2021-03-24 15:05:51,893 INFO L132 encePairwiseOnDemand]: 47/57 looper letters, 59 selfloop transitions, 22 changer transitions 0/122 dead transitions. [2021-03-24 15:05:51,894 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 122 transitions, 472 flow [2021-03-24 15:05:51,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 15:05:51,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 15:05:51,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 354 transitions. [2021-03-24 15:05:51,896 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7763157894736842 [2021-03-24 15:05:51,896 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 354 transitions. [2021-03-24 15:05:51,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 354 transitions. [2021-03-24 15:05:51,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:05:51,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 354 transitions. [2021-03-24 15:05:51,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 44.25) internal successors, (354), 8 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:51,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:51,901 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:51,901 INFO L185 Difference]: Start difference. First operand has 62 places, 60 transitions, 186 flow. Second operand 8 states and 354 transitions. [2021-03-24 15:05:51,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 122 transitions, 472 flow [2021-03-24 15:05:51,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 122 transitions, 470 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-24 15:05:51,911 INFO L241 Difference]: Finished difference. Result has 71 places, 82 transitions, 326 flow [2021-03-24 15:05:51,911 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=184, 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=326, PETRI_PLACES=71, PETRI_TRANSITIONS=82} [2021-03-24 15:05:51,912 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 17 predicate places. [2021-03-24 15:05:51,912 INFO L480 AbstractCegarLoop]: Abstraction has has 71 places, 82 transitions, 326 flow [2021-03-24 15:05:51,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:51,912 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:05:51,913 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] [2021-03-24 15:05:51,913 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 15:05:51,913 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:05:51,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:05:51,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1385547955, now seen corresponding path program 3 times [2021-03-24 15:05:51,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:05:51,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123833608] [2021-03-24 15:05:51,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:05:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:05:51,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:51,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:05:51,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:51,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:05:51,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:51,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:05:51,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:05:51,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123833608] [2021-03-24 15:05:51,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:05:51,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 15:05:51,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096265328] [2021-03-24 15:05:51,960 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 15:05:51,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:05:51,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 15:05:51,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 15:05:51,961 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 57 [2021-03-24 15:05:51,961 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 82 transitions, 326 flow. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:51,962 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:05:51,962 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 57 [2021-03-24 15:05:51,962 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:05:52,026 INFO L129 PetriNetUnfolder]: 85/523 cut-off events. [2021-03-24 15:05:52,026 INFO L130 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2021-03-24 15:05:52,029 INFO L84 FinitePrefix]: Finished finitePrefix Result has 977 conditions, 523 events. 85/523 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3715 event pairs, 21 based on Foata normal form. 19/530 useless extension candidates. Maximal degree in co-relation 916. Up to 70 conditions per place. [2021-03-24 15:05:52,030 INFO L132 encePairwiseOnDemand]: 53/57 looper letters, 3 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2021-03-24 15:05:52,030 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 82 transitions, 336 flow [2021-03-24 15:05:52,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 15:05:52,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 15:05:52,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 160 transitions. [2021-03-24 15:05:52,032 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.935672514619883 [2021-03-24 15:05:52,033 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 160 transitions. [2021-03-24 15:05:52,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 160 transitions. [2021-03-24 15:05:52,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:05:52,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 160 transitions. [2021-03-24 15:05:52,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:52,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:52,035 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:52,035 INFO L185 Difference]: Start difference. First operand has 71 places, 82 transitions, 326 flow. Second operand 3 states and 160 transitions. [2021-03-24 15:05:52,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 82 transitions, 336 flow [2021-03-24 15:05:52,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 82 transitions, 336 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-03-24 15:05:52,041 INFO L241 Difference]: Finished difference. Result has 74 places, 82 transitions, 336 flow [2021-03-24 15:05:52,041 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=326, 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=336, PETRI_PLACES=74, PETRI_TRANSITIONS=82} [2021-03-24 15:05:52,041 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 20 predicate places. [2021-03-24 15:05:52,041 INFO L480 AbstractCegarLoop]: Abstraction has has 74 places, 82 transitions, 336 flow [2021-03-24 15:05:52,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:52,041 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:05:52,041 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] [2021-03-24 15:05:52,042 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 15:05:52,042 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:05:52,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:05:52,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1117699045, now seen corresponding path program 4 times [2021-03-24 15:05:52,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:05:52,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374932463] [2021-03-24 15:05:52,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:05:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:05:52,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:52,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-24 15:05:52,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:52,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:05:52,200 INFO L142 QuantifierPusher]: treesize reduction 32, result has 31.9 percent of original size [2021-03-24 15:05:52,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 15:05:52,207 INFO L142 QuantifierPusher]: treesize reduction 10, result has 50.0 percent of original size [2021-03-24 15:05:52,208 INFO L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-03-24 15:05:52,227 INFO L142 QuantifierPusher]: treesize reduction 9, result has 73.5 percent of original size [2021-03-24 15:05:52,236 INFO L147 QuantifierPusher]: treesize reduction 3, result has 88.0 percent of original size 22 [2021-03-24 15:05:52,245 INFO L142 QuantifierPusher]: treesize reduction 15, result has 54.5 percent of original size [2021-03-24 15:05:52,246 INFO L147 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size 15 [2021-03-24 15:05:52,253 INFO L142 QuantifierPusher]: treesize reduction 8, result has 57.9 percent of original size [2021-03-24 15:05:52,254 INFO L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-03-24 15:05:52,268 INFO L142 QuantifierPusher]: treesize reduction 18, result has 56.1 percent of original size [2021-03-24 15:05:52,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 15:05:52,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:52,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:05:52,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:05:52,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374932463] [2021-03-24 15:05:52,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:05:52,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 15:05:52,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162010591] [2021-03-24 15:05:52,291 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:05:52,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:05:52,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:05:52,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:05:52,292 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2021-03-24 15:05:52,292 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 82 transitions, 336 flow. Second operand has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:52,292 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:05:52,292 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2021-03-24 15:05:52,292 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:05:52,670 INFO L129 PetriNetUnfolder]: 1555/3655 cut-off events. [2021-03-24 15:05:52,670 INFO L130 PetriNetUnfolder]: For 1126/1154 co-relation queries the response was YES. [2021-03-24 15:05:52,684 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8597 conditions, 3655 events. 1555/3655 cut-off events. For 1126/1154 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 29713 event pairs, 486 based on Foata normal form. 23/3527 useless extension candidates. Maximal degree in co-relation 8472. Up to 1668 conditions per place. [2021-03-24 15:05:52,702 INFO L132 encePairwiseOnDemand]: 45/57 looper letters, 73 selfloop transitions, 19 changer transitions 0/133 dead transitions. [2021-03-24 15:05:52,702 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 133 transitions, 680 flow [2021-03-24 15:05:52,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 15:05:52,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 15:05:52,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 309 transitions. [2021-03-24 15:05:52,704 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7744360902255639 [2021-03-24 15:05:52,704 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 309 transitions. [2021-03-24 15:05:52,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 309 transitions. [2021-03-24 15:05:52,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:05:52,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 309 transitions. [2021-03-24 15:05:52,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 44.142857142857146) internal successors, (309), 7 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:52,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 57.0) internal successors, (456), 8 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:52,706 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 57.0) internal successors, (456), 8 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:52,706 INFO L185 Difference]: Start difference. First operand has 74 places, 82 transitions, 336 flow. Second operand 7 states and 309 transitions. [2021-03-24 15:05:52,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 133 transitions, 680 flow [2021-03-24 15:05:52,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 133 transitions, 676 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 15:05:52,718 INFO L241 Difference]: Finished difference. Result has 82 places, 94 transitions, 454 flow [2021-03-24 15:05:52,718 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=454, PETRI_PLACES=82, PETRI_TRANSITIONS=94} [2021-03-24 15:05:52,719 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 28 predicate places. [2021-03-24 15:05:52,719 INFO L480 AbstractCegarLoop]: Abstraction has has 82 places, 94 transitions, 454 flow [2021-03-24 15:05:52,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:52,719 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:05:52,719 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] [2021-03-24 15:05:52,719 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 15:05:52,719 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:05:52,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:05:52,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1689744303, now seen corresponding path program 5 times [2021-03-24 15:05:52,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:05:52,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51088294] [2021-03-24 15:05:52,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:05:52,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:05:52,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:52,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:05:52,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:52,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:05:52,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:52,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:05:52,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:05:52,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51088294] [2021-03-24 15:05:52,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:05:52,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 15:05:52,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107042142] [2021-03-24 15:05:52,736 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 15:05:52,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:05:52,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 15:05:52,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 15:05:52,736 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 57 [2021-03-24 15:05:52,737 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 94 transitions, 454 flow. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:52,737 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:05:52,737 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 57 [2021-03-24 15:05:52,737 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:05:52,816 INFO L129 PetriNetUnfolder]: 204/1052 cut-off events. [2021-03-24 15:05:52,816 INFO L130 PetriNetUnfolder]: For 238/265 co-relation queries the response was YES. [2021-03-24 15:05:52,821 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2378 conditions, 1052 events. 204/1052 cut-off events. For 238/265 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 8716 event pairs, 52 based on Foata normal form. 26/1049 useless extension candidates. Maximal degree in co-relation 2290. Up to 126 conditions per place. [2021-03-24 15:05:52,825 INFO L132 encePairwiseOnDemand]: 53/57 looper letters, 3 selfloop transitions, 2 changer transitions 0/94 dead transitions. [2021-03-24 15:05:52,825 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 94 transitions, 464 flow [2021-03-24 15:05:52,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 15:05:52,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 15:05:52,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 160 transitions. [2021-03-24 15:05:52,826 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.935672514619883 [2021-03-24 15:05:52,826 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 160 transitions. [2021-03-24 15:05:52,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 160 transitions. [2021-03-24 15:05:52,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:05:52,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 160 transitions. [2021-03-24 15:05:52,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:52,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:52,828 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:52,828 INFO L185 Difference]: Start difference. First operand has 82 places, 94 transitions, 454 flow. Second operand 3 states and 160 transitions. [2021-03-24 15:05:52,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 94 transitions, 464 flow [2021-03-24 15:05:52,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 94 transitions, 458 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 15:05:52,833 INFO L241 Difference]: Finished difference. Result has 84 places, 94 transitions, 458 flow [2021-03-24 15:05:52,833 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=458, PETRI_PLACES=84, PETRI_TRANSITIONS=94} [2021-03-24 15:05:52,833 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 30 predicate places. [2021-03-24 15:05:52,833 INFO L480 AbstractCegarLoop]: Abstraction has has 84 places, 94 transitions, 458 flow [2021-03-24 15:05:52,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:52,833 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:05:52,833 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] [2021-03-24 15:05:52,834 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 15:05:52,834 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:05:52,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:05:52,834 INFO L82 PathProgramCache]: Analyzing trace with hash -46546685, now seen corresponding path program 6 times [2021-03-24 15:05:52,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:05:52,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844965278] [2021-03-24 15:05:52,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:05:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:05:52,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:52,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:05:52,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:52,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:05:52,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:52,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:05:52,902 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:52,903 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:05:52,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:52,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:05:52,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:52,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:05:52,927 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-24 15:05:52,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:05:52,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:05:52,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844965278] [2021-03-24 15:05:52,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:05:52,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 15:05:52,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492067675] [2021-03-24 15:05:52,937 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 15:05:52,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:05:52,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 15:05:52,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 15:05:52,939 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 57 [2021-03-24 15:05:52,939 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 94 transitions, 458 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) [2021-03-24 15:05:52,939 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:05:52,939 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 57 [2021-03-24 15:05:52,939 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:05:53,269 INFO L129 PetriNetUnfolder]: 312/1563 cut-off events. [2021-03-24 15:05:53,269 INFO L130 PetriNetUnfolder]: For 496/547 co-relation queries the response was YES. [2021-03-24 15:05:53,278 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3939 conditions, 1563 events. 312/1563 cut-off events. For 496/547 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 14191 event pairs, 78 based on Foata normal form. 25/1546 useless extension candidates. Maximal degree in co-relation 3735. Up to 205 conditions per place. [2021-03-24 15:05:53,285 INFO L132 encePairwiseOnDemand]: 49/57 looper letters, 32 selfloop transitions, 27 changer transitions 0/129 dead transitions. [2021-03-24 15:05:53,285 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 129 transitions, 719 flow [2021-03-24 15:05:53,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-24 15:05:53,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-24 15:05:53,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 556 transitions. [2021-03-24 15:05:53,287 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.886762360446571 [2021-03-24 15:05:53,287 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 556 transitions. [2021-03-24 15:05:53,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 556 transitions. [2021-03-24 15:05:53,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:05:53,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 556 transitions. [2021-03-24 15:05:53,289 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) [2021-03-24 15:05:53,290 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) [2021-03-24 15:05:53,290 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) [2021-03-24 15:05:53,290 INFO L185 Difference]: Start difference. First operand has 84 places, 94 transitions, 458 flow. Second operand 11 states and 556 transitions. [2021-03-24 15:05:53,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 129 transitions, 719 flow [2021-03-24 15:05:53,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 129 transitions, 715 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 15:05:53,298 INFO L241 Difference]: Finished difference. Result has 97 places, 115 transitions, 662 flow [2021-03-24 15:05:53,298 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=662, PETRI_PLACES=97, PETRI_TRANSITIONS=115} [2021-03-24 15:05:53,298 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 43 predicate places. [2021-03-24 15:05:53,298 INFO L480 AbstractCegarLoop]: Abstraction has has 97 places, 115 transitions, 662 flow [2021-03-24 15:05:53,298 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) [2021-03-24 15:05:53,299 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:05:53,299 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] [2021-03-24 15:05:53,299 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 15:05:53,299 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:05:53,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:05:53,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1762549497, now seen corresponding path program 7 times [2021-03-24 15:05:53,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:05:53,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663203467] [2021-03-24 15:05:53,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:05:53,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:05:53,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:53,333 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:05:53,337 INFO L142 QuantifierPusher]: treesize reduction 13, result has 53.6 percent of original size [2021-03-24 15:05:53,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 15:05:53,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:53,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:05:53,352 INFO L142 QuantifierPusher]: treesize reduction 13, result has 35.0 percent of original size [2021-03-24 15:05:53,352 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:05:53,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:53,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 15:05:53,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:53,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:05:53,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:05:53,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663203467] [2021-03-24 15:05:53,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:05:53,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 15:05:53,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723973007] [2021-03-24 15:05:53,369 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:05:53,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:05:53,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:05:53,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:05:53,371 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 57 [2021-03-24 15:05:53,371 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 115 transitions, 662 flow. Second operand has 7 states, 7 states have (on average 39.42857142857143) internal successors, (276), 7 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:53,371 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:05:53,371 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 57 [2021-03-24 15:05:53,371 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:05:53,912 INFO L129 PetriNetUnfolder]: 1631/4578 cut-off events. [2021-03-24 15:05:53,912 INFO L130 PetriNetUnfolder]: For 3800/3896 co-relation queries the response was YES. [2021-03-24 15:05:53,934 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13217 conditions, 4578 events. 1631/4578 cut-off events. For 3800/3896 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 42323 event pairs, 603 based on Foata normal form. 72/4492 useless extension candidates. Maximal degree in co-relation 13108. Up to 1302 conditions per place. [2021-03-24 15:05:53,958 INFO L132 encePairwiseOnDemand]: 51/57 looper letters, 55 selfloop transitions, 19 changer transitions 0/145 dead transitions. [2021-03-24 15:05:53,958 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 145 transitions, 919 flow [2021-03-24 15:05:53,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-24 15:05:53,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-24 15:05:53,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 266 transitions. [2021-03-24 15:05:53,960 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2021-03-24 15:05:53,960 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 266 transitions. [2021-03-24 15:05:53,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 266 transitions. [2021-03-24 15:05:53,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:05:53,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 266 transitions. [2021-03-24 15:05:53,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 44.333333333333336) internal successors, (266), 6 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:53,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 57.0) internal successors, (399), 7 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:53,963 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 57.0) internal successors, (399), 7 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:53,963 INFO L185 Difference]: Start difference. First operand has 97 places, 115 transitions, 662 flow. Second operand 6 states and 266 transitions. [2021-03-24 15:05:53,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 145 transitions, 919 flow [2021-03-24 15:05:53,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 145 transitions, 903 flow, removed 8 selfloop flow, removed 0 redundant places. [2021-03-24 15:05:53,997 INFO L241 Difference]: Finished difference. Result has 105 places, 121 transitions, 745 flow [2021-03-24 15:05:53,997 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=745, PETRI_PLACES=105, PETRI_TRANSITIONS=121} [2021-03-24 15:05:53,997 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 51 predicate places. [2021-03-24 15:05:53,997 INFO L480 AbstractCegarLoop]: Abstraction has has 105 places, 121 transitions, 745 flow [2021-03-24 15:05:53,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 39.42857142857143) internal successors, (276), 7 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:53,998 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:05:53,998 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] [2021-03-24 15:05:53,998 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 15:05:53,998 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:05:53,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:05:53,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1096519139, now seen corresponding path program 8 times [2021-03-24 15:05:53,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:05:54,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231300914] [2021-03-24 15:05:54,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:05:54,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:05:54,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:54,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:05:54,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:54,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:05:54,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:54,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:05:54,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:05:54,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231300914] [2021-03-24 15:05:54,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:05:54,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 15:05:54,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598071583] [2021-03-24 15:05:54,030 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 15:05:54,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:05:54,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 15:05:54,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 15:05:54,031 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 57 [2021-03-24 15:05:54,031 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 121 transitions, 745 flow. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:54,031 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:05:54,031 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 57 [2021-03-24 15:05:54,031 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:05:54,192 INFO L129 PetriNetUnfolder]: 367/1932 cut-off events. [2021-03-24 15:05:54,192 INFO L130 PetriNetUnfolder]: For 1613/1663 co-relation queries the response was YES. [2021-03-24 15:05:54,205 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5220 conditions, 1932 events. 367/1932 cut-off events. For 1613/1663 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 18870 event pairs, 91 based on Foata normal form. 43/1908 useless extension candidates. Maximal degree in co-relation 5129. Up to 237 conditions per place. [2021-03-24 15:05:54,212 INFO L132 encePairwiseOnDemand]: 53/57 looper letters, 3 selfloop transitions, 2 changer transitions 2/121 dead transitions. [2021-03-24 15:05:54,212 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 121 transitions, 755 flow [2021-03-24 15:05:54,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 15:05:54,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 15:05:54,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 160 transitions. [2021-03-24 15:05:54,214 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.935672514619883 [2021-03-24 15:05:54,214 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 160 transitions. [2021-03-24 15:05:54,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 160 transitions. [2021-03-24 15:05:54,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:05:54,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 160 transitions. [2021-03-24 15:05:54,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:54,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:54,216 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:54,216 INFO L185 Difference]: Start difference. First operand has 105 places, 121 transitions, 745 flow. Second operand 3 states and 160 transitions. [2021-03-24 15:05:54,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 121 transitions, 755 flow [2021-03-24 15:05:54,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 121 transitions, 731 flow, removed 4 selfloop flow, removed 2 redundant places. [2021-03-24 15:05:54,235 INFO L241 Difference]: Finished difference. Result has 106 places, 119 transitions, 721 flow [2021-03-24 15:05:54,235 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=721, PETRI_PLACES=106, PETRI_TRANSITIONS=119} [2021-03-24 15:05:54,235 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 52 predicate places. [2021-03-24 15:05:54,235 INFO L480 AbstractCegarLoop]: Abstraction has has 106 places, 119 transitions, 721 flow [2021-03-24 15:05:54,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:54,235 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:05:54,236 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:05:54,236 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 15:05:54,236 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:05:54,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:05:54,236 INFO L82 PathProgramCache]: Analyzing trace with hash -399044495, now seen corresponding path program 9 times [2021-03-24 15:05:54,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:05:54,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376975824] [2021-03-24 15:05:54,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:05:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:05:54,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:54,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-24 15:05:54,312 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-03-24 15:05:54,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:05:54,316 INFO L142 QuantifierPusher]: treesize reduction 7, result has 58.8 percent of original size [2021-03-24 15:05:54,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:05:54,319 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-03-24 15:05:54,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:05:54,326 INFO L142 QuantifierPusher]: treesize reduction 24, result has 22.6 percent of original size [2021-03-24 15:05:54,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:05:54,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:54,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 15:05:54,337 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-24 15:05:54,337 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:05:54,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:54,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:05:54,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:54,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:05:54,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:05:54,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376975824] [2021-03-24 15:05:54,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:05:54,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 15:05:54,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526178088] [2021-03-24 15:05:54,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 15:05:54,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:05:54,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 15:05:54,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-24 15:05:54,346 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2021-03-24 15:05:54,347 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 119 transitions, 721 flow. Second operand has 6 states, 6 states have (on average 37.166666666666664) internal successors, (223), 6 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:54,347 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:05:54,347 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2021-03-24 15:05:54,347 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:05:54,981 INFO L129 PetriNetUnfolder]: 2389/5946 cut-off events. [2021-03-24 15:05:54,981 INFO L130 PetriNetUnfolder]: For 7126/7386 co-relation queries the response was YES. [2021-03-24 15:05:55,019 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18681 conditions, 5946 events. 2389/5946 cut-off events. For 7126/7386 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 54329 event pairs, 1013 based on Foata normal form. 87/5700 useless extension candidates. Maximal degree in co-relation 18623. Up to 3013 conditions per place. [2021-03-24 15:05:55,046 INFO L132 encePairwiseOnDemand]: 47/57 looper letters, 79 selfloop transitions, 18 changer transitions 0/157 dead transitions. [2021-03-24 15:05:55,046 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 157 transitions, 1074 flow [2021-03-24 15:05:55,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-24 15:05:55,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-24 15:05:55,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 265 transitions. [2021-03-24 15:05:55,047 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7748538011695907 [2021-03-24 15:05:55,047 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 265 transitions. [2021-03-24 15:05:55,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 265 transitions. [2021-03-24 15:05:55,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:05:55,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 265 transitions. [2021-03-24 15:05:55,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 44.166666666666664) internal successors, (265), 6 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:55,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 57.0) internal successors, (399), 7 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:55,049 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 57.0) internal successors, (399), 7 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:55,049 INFO L185 Difference]: Start difference. First operand has 106 places, 119 transitions, 721 flow. Second operand 6 states and 265 transitions. [2021-03-24 15:05:55,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 157 transitions, 1074 flow [2021-03-24 15:05:55,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 157 transitions, 1068 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-03-24 15:05:55,106 INFO L241 Difference]: Finished difference. Result has 108 places, 126 transitions, 823 flow [2021-03-24 15:05:55,107 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=715, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=823, PETRI_PLACES=108, PETRI_TRANSITIONS=126} [2021-03-24 15:05:55,107 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 54 predicate places. [2021-03-24 15:05:55,107 INFO L480 AbstractCegarLoop]: Abstraction has has 108 places, 126 transitions, 823 flow [2021-03-24 15:05:55,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 37.166666666666664) internal successors, (223), 6 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:55,107 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:05:55,107 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] [2021-03-24 15:05:55,107 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-24 15:05:55,107 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:05:55,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:05:55,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1978821047, now seen corresponding path program 10 times [2021-03-24 15:05:55,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:05:55,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578764542] [2021-03-24 15:05:55,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:05:55,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:05:55,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:55,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:05:55,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:55,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:05:55,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:55,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:05:55,149 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:55,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:05:55,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:55,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:05:55,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:55,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:05:55,177 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-24 15:05:55,179 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:05:55,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:05:55,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578764542] [2021-03-24 15:05:55,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:05:55,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 15:05:55,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918040926] [2021-03-24 15:05:55,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 15:05:55,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:05:55,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 15:05:55,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 15:05:55,195 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 57 [2021-03-24 15:05:55,195 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 126 transitions, 823 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) [2021-03-24 15:05:55,196 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:05:55,196 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 57 [2021-03-24 15:05:55,196 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:05:55,609 INFO L129 PetriNetUnfolder]: 509/2449 cut-off events. [2021-03-24 15:05:55,609 INFO L130 PetriNetUnfolder]: For 2588/2784 co-relation queries the response was YES. [2021-03-24 15:05:55,626 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7455 conditions, 2449 events. 509/2449 cut-off events. For 2588/2784 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 24566 event pairs, 128 based on Foata normal form. 73/2435 useless extension candidates. Maximal degree in co-relation 7175. Up to 278 conditions per place. [2021-03-24 15:05:55,633 INFO L132 encePairwiseOnDemand]: 49/57 looper letters, 34 selfloop transitions, 32 changer transitions 3/151 dead transitions. [2021-03-24 15:05:55,633 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 151 transitions, 1091 flow [2021-03-24 15:05:55,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-24 15:05:55,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-24 15:05:55,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 556 transitions. [2021-03-24 15:05:55,636 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.886762360446571 [2021-03-24 15:05:55,636 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 556 transitions. [2021-03-24 15:05:55,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 556 transitions. [2021-03-24 15:05:55,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:05:55,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 556 transitions. [2021-03-24 15:05:55,637 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) [2021-03-24 15:05:55,640 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) [2021-03-24 15:05:55,640 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) [2021-03-24 15:05:55,641 INFO L185 Difference]: Start difference. First operand has 108 places, 126 transitions, 823 flow. Second operand 11 states and 556 transitions. [2021-03-24 15:05:55,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 151 transitions, 1091 flow [2021-03-24 15:05:55,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 151 transitions, 1066 flow, removed 6 selfloop flow, removed 2 redundant places. [2021-03-24 15:05:55,662 INFO L241 Difference]: Finished difference. Result has 121 places, 135 transitions, 962 flow [2021-03-24 15:05:55,663 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=962, PETRI_PLACES=121, PETRI_TRANSITIONS=135} [2021-03-24 15:05:55,663 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 67 predicate places. [2021-03-24 15:05:55,663 INFO L480 AbstractCegarLoop]: Abstraction has has 121 places, 135 transitions, 962 flow [2021-03-24 15:05:55,663 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) [2021-03-24 15:05:55,664 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:05:55,664 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] [2021-03-24 15:05:55,664 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-24 15:05:55,664 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:05:55,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:05:55,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1540876563, now seen corresponding path program 11 times [2021-03-24 15:05:55,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:05:55,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067173885] [2021-03-24 15:05:55,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:05:55,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:05:55,727 INFO L142 QuantifierPusher]: treesize reduction 38, result has 29.6 percent of original size [2021-03-24 15:05:55,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-24 15:05:55,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:55,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:05:55,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:55,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-24 15:05:55,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:55,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-24 15:05:55,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:55,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-24 15:05:55,800 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:55,800 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 15:05:55,811 INFO L142 QuantifierPusher]: treesize reduction 6, result has 76.9 percent of original size [2021-03-24 15:05:55,812 INFO L147 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size 9 [2021-03-24 15:05:55,828 INFO L142 QuantifierPusher]: treesize reduction 12, result has 65.7 percent of original size [2021-03-24 15:05:55,829 INFO L147 QuantifierPusher]: treesize reduction 11, result has 52.2 percent of original size 12 [2021-03-24 15:05:55,845 INFO L142 QuantifierPusher]: treesize reduction 13, result has 7.1 percent of original size [2021-03-24 15:05:55,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:05:55,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:55,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:05:55,847 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:55,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:05:55,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:05:55,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067173885] [2021-03-24 15:05:55,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:05:55,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 15:05:55,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718039248] [2021-03-24 15:05:55,849 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 15:05:55,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:05:55,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 15:05:55,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-03-24 15:05:55,851 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2021-03-24 15:05:55,851 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 135 transitions, 962 flow. Second operand has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:55,851 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:05:55,851 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2021-03-24 15:05:55,851 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:05:56,868 INFO L129 PetriNetUnfolder]: 3101/7727 cut-off events. [2021-03-24 15:05:56,868 INFO L130 PetriNetUnfolder]: For 13773/13983 co-relation queries the response was YES. [2021-03-24 15:05:56,932 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26720 conditions, 7727 events. 3101/7727 cut-off events. For 13773/13983 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 73880 event pairs, 1011 based on Foata normal form. 97/7378 useless extension candidates. Maximal degree in co-relation 26647. Up to 4037 conditions per place. [2021-03-24 15:05:56,974 INFO L132 encePairwiseOnDemand]: 43/57 looper letters, 112 selfloop transitions, 63 changer transitions 0/245 dead transitions. [2021-03-24 15:05:56,975 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 245 transitions, 1959 flow [2021-03-24 15:05:56,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 15:05:56,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 15:05:56,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 430 transitions. [2021-03-24 15:05:56,976 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7543859649122807 [2021-03-24 15:05:56,977 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 430 transitions. [2021-03-24 15:05:56,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 430 transitions. [2021-03-24 15:05:56,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:05:56,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 430 transitions. [2021-03-24 15:05:56,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 43.0) internal successors, (430), 10 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:56,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 57.0) internal successors, (627), 11 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:56,980 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 57.0) internal successors, (627), 11 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:56,980 INFO L185 Difference]: Start difference. First operand has 121 places, 135 transitions, 962 flow. Second operand 10 states and 430 transitions. [2021-03-24 15:05:56,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 245 transitions, 1959 flow [2021-03-24 15:05:57,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 245 transitions, 1934 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-03-24 15:05:57,115 INFO L241 Difference]: Finished difference. Result has 130 places, 191 transitions, 1547 flow [2021-03-24 15:05:57,115 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=937, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1547, PETRI_PLACES=130, PETRI_TRANSITIONS=191} [2021-03-24 15:05:57,115 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 76 predicate places. [2021-03-24 15:05:57,115 INFO L480 AbstractCegarLoop]: Abstraction has has 130 places, 191 transitions, 1547 flow [2021-03-24 15:05:57,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:57,116 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:05:57,116 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:05:57,116 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-24 15:05:57,116 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:05:57,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:05:57,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1679448005, now seen corresponding path program 12 times [2021-03-24 15:05:57,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:05:57,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493417118] [2021-03-24 15:05:57,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:05:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:05:57,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:57,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:05:57,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:57,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:05:57,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:57,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:05:57,163 INFO L142 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size [2021-03-24 15:05:57,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 15:05:57,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:57,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:05:57,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:57,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 15:05:57,193 INFO L142 QuantifierPusher]: treesize reduction 10, result has 47.4 percent of original size [2021-03-24 15:05:57,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 15:05:57,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:57,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:05:57,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:05:57,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493417118] [2021-03-24 15:05:57,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:05:57,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 15:05:57,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611315998] [2021-03-24 15:05:57,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 15:05:57,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:05:57,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 15:05:57,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-03-24 15:05:57,209 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2021-03-24 15:05:57,209 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 191 transitions, 1547 flow. Second operand has 8 states, 8 states have (on average 36.375) internal successors, (291), 8 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) [2021-03-24 15:05:57,209 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:05:57,209 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2021-03-24 15:05:57,209 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:05:58,299 INFO L129 PetriNetUnfolder]: 4023/10247 cut-off events. [2021-03-24 15:05:58,300 INFO L130 PetriNetUnfolder]: For 29616/30169 co-relation queries the response was YES. [2021-03-24 15:05:58,379 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40365 conditions, 10247 events. 4023/10247 cut-off events. For 29616/30169 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 103830 event pairs, 587 based on Foata normal form. 203/9967 useless extension candidates. Maximal degree in co-relation 39817. Up to 2072 conditions per place. [2021-03-24 15:05:58,430 INFO L132 encePairwiseOnDemand]: 44/57 looper letters, 187 selfloop transitions, 100 changer transitions 3/360 dead transitions. [2021-03-24 15:05:58,430 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 360 transitions, 3338 flow [2021-03-24 15:05:58,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 15:05:58,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 15:05:58,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 440 transitions. [2021-03-24 15:05:58,432 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7719298245614035 [2021-03-24 15:05:58,432 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 440 transitions. [2021-03-24 15:05:58,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 440 transitions. [2021-03-24 15:05:58,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:05:58,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 440 transitions. [2021-03-24 15:05:58,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 44.0) internal successors, (440), 10 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:58,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 57.0) internal successors, (627), 11 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:58,435 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 57.0) internal successors, (627), 11 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:05:58,435 INFO L185 Difference]: Start difference. First operand has 130 places, 191 transitions, 1547 flow. Second operand 10 states and 440 transitions. [2021-03-24 15:05:58,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 360 transitions, 3338 flow [2021-03-24 15:05:58,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 360 transitions, 3278 flow, removed 30 selfloop flow, removed 0 redundant places. [2021-03-24 15:05:58,947 INFO L241 Difference]: Finished difference. Result has 147 places, 250 transitions, 2404 flow [2021-03-24 15:05:58,947 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1501, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2404, PETRI_PLACES=147, PETRI_TRANSITIONS=250} [2021-03-24 15:05:58,947 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 93 predicate places. [2021-03-24 15:05:58,948 INFO L480 AbstractCegarLoop]: Abstraction has has 147 places, 250 transitions, 2404 flow [2021-03-24 15:05:58,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 36.375) internal successors, (291), 8 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) [2021-03-24 15:05:58,948 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:05:58,948 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] [2021-03-24 15:05:58,948 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-24 15:05:58,948 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:05:58,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:05:58,949 INFO L82 PathProgramCache]: Analyzing trace with hash -30093125, now seen corresponding path program 13 times [2021-03-24 15:05:58,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:05:58,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92274616] [2021-03-24 15:05:58,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:05:58,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:05:58,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:58,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:05:58,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:58,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:05:58,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:58,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:05:59,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:59,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:05:59,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:59,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:05:59,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:05:59,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:05:59,040 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-24 15:05:59,041 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:05:59,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:05:59,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92274616] [2021-03-24 15:05:59,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:05:59,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 15:05:59,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692109510] [2021-03-24 15:05:59,053 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 15:05:59,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:05:59,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 15:05:59,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 15:05:59,054 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 57 [2021-03-24 15:05:59,055 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 250 transitions, 2404 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) [2021-03-24 15:05:59,055 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:05:59,055 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 57 [2021-03-24 15:05:59,055 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:06:00,106 INFO L129 PetriNetUnfolder]: 2165/6921 cut-off events. [2021-03-24 15:06:00,106 INFO L130 PetriNetUnfolder]: For 28470/29406 co-relation queries the response was YES. [2021-03-24 15:06:00,241 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30863 conditions, 6921 events. 2165/6921 cut-off events. For 28470/29406 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 73535 event pairs, 312 based on Foata normal form. 274/6771 useless extension candidates. Maximal degree in co-relation 30240. Up to 1683 conditions per place. [2021-03-24 15:06:00,269 INFO L132 encePairwiseOnDemand]: 49/57 looper letters, 46 selfloop transitions, 37 changer transitions 0/280 dead transitions. [2021-03-24 15:06:00,270 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 280 transitions, 2775 flow [2021-03-24 15:06:00,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-24 15:06:00,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-24 15:06:00,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 556 transitions. [2021-03-24 15:06:00,275 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.886762360446571 [2021-03-24 15:06:00,276 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 556 transitions. [2021-03-24 15:06:00,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 556 transitions. [2021-03-24 15:06:00,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:06:00,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 556 transitions. [2021-03-24 15:06:00,278 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) [2021-03-24 15:06:00,279 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) [2021-03-24 15:06:00,280 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) [2021-03-24 15:06:00,280 INFO L185 Difference]: Start difference. First operand has 147 places, 250 transitions, 2404 flow. Second operand 11 states and 556 transitions. [2021-03-24 15:06:00,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 280 transitions, 2775 flow [2021-03-24 15:06:00,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 280 transitions, 2732 flow, removed 21 selfloop flow, removed 1 redundant places. [2021-03-24 15:06:00,481 INFO L241 Difference]: Finished difference. Result has 161 places, 266 transitions, 2621 flow [2021-03-24 15:06:00,481 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=2361, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2621, PETRI_PLACES=161, PETRI_TRANSITIONS=266} [2021-03-24 15:06:00,482 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 107 predicate places. [2021-03-24 15:06:00,482 INFO L480 AbstractCegarLoop]: Abstraction has has 161 places, 266 transitions, 2621 flow [2021-03-24 15:06:00,482 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) [2021-03-24 15:06:00,482 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:06:00,482 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] [2021-03-24 15:06:00,482 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-24 15:06:00,482 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:06:00,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:06:00,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1729582821, now seen corresponding path program 14 times [2021-03-24 15:06:00,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:06:00,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553760435] [2021-03-24 15:06:00,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:06:00,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:06:00,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:00,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:06:00,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:00,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:06:00,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:00,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:06:00,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:00,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:06:00,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:00,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:06:00,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:00,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:06:00,563 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-24 15:06:00,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:06:00,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:06:00,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553760435] [2021-03-24 15:06:00,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:06:00,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 15:06:00,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363740918] [2021-03-24 15:06:00,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 15:06:00,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:06:00,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 15:06:00,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 15:06:00,581 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 57 [2021-03-24 15:06:00,581 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 266 transitions, 2621 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) [2021-03-24 15:06:00,582 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:06:00,582 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 57 [2021-03-24 15:06:00,582 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:06:01,635 INFO L129 PetriNetUnfolder]: 2177/6980 cut-off events. [2021-03-24 15:06:01,635 INFO L130 PetriNetUnfolder]: For 30022/31110 co-relation queries the response was YES. [2021-03-24 15:06:01,671 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32436 conditions, 6980 events. 2177/6980 cut-off events. For 30022/31110 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 74409 event pairs, 314 based on Foata normal form. 323/6884 useless extension candidates. Maximal degree in co-relation 32057. Up to 1707 conditions per place. [2021-03-24 15:06:01,695 INFO L132 encePairwiseOnDemand]: 49/57 looper letters, 47 selfloop transitions, 40 changer transitions 0/284 dead transitions. [2021-03-24 15:06:01,695 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 284 transitions, 2931 flow [2021-03-24 15:06:01,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-24 15:06:01,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-24 15:06:01,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 556 transitions. [2021-03-24 15:06:01,697 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.886762360446571 [2021-03-24 15:06:01,697 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 556 transitions. [2021-03-24 15:06:01,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 556 transitions. [2021-03-24 15:06:01,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:06:01,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 556 transitions. [2021-03-24 15:06:01,699 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) [2021-03-24 15:06:01,700 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) [2021-03-24 15:06:01,700 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) [2021-03-24 15:06:01,700 INFO L185 Difference]: Start difference. First operand has 161 places, 266 transitions, 2621 flow. Second operand 11 states and 556 transitions. [2021-03-24 15:06:01,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 284 transitions, 2931 flow [2021-03-24 15:06:01,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 284 transitions, 2862 flow, removed 29 selfloop flow, removed 2 redundant places. [2021-03-24 15:06:01,930 INFO L241 Difference]: Finished difference. Result has 172 places, 271 transitions, 2717 flow [2021-03-24 15:06:01,930 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=2564, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2717, PETRI_PLACES=172, PETRI_TRANSITIONS=271} [2021-03-24 15:06:01,930 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 118 predicate places. [2021-03-24 15:06:01,930 INFO L480 AbstractCegarLoop]: Abstraction has has 172 places, 271 transitions, 2717 flow [2021-03-24 15:06:01,931 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) [2021-03-24 15:06:01,931 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:06:01,931 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] [2021-03-24 15:06:01,932 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-24 15:06:01,932 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:06:01,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:06:01,932 INFO L82 PathProgramCache]: Analyzing trace with hash 761940815, now seen corresponding path program 15 times [2021-03-24 15:06:01,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:06:01,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663424119] [2021-03-24 15:06:01,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:06:01,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:06:01,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:01,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:06:01,957 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:01,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:06:01,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:01,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:06:01,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:01,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 15:06:01,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:01,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 15:06:01,983 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-03-24 15:06:01,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 15:06:01,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:01,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:06:02,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:02,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:06:02,008 INFO L142 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-03-24 15:06:02,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:06:02,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:02,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:06:02,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:06:02,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663424119] [2021-03-24 15:06:02,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:06:02,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-24 15:06:02,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709685705] [2021-03-24 15:06:02,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 15:06:02,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:06:02,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 15:06:02,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-03-24 15:06:02,018 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2021-03-24 15:06:02,019 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 271 transitions, 2717 flow. Second operand has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:06:02,019 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:06:02,019 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2021-03-24 15:06:02,019 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:06:04,160 INFO L129 PetriNetUnfolder]: 5724/14559 cut-off events. [2021-03-24 15:06:04,161 INFO L130 PetriNetUnfolder]: For 84650/86288 co-relation queries the response was YES. [2021-03-24 15:06:04,247 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71489 conditions, 14559 events. 5724/14559 cut-off events. For 84650/86288 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 156865 event pairs, 1082 based on Foata normal form. 668/14595 useless extension candidates. Maximal degree in co-relation 71005. Up to 4311 conditions per place. [2021-03-24 15:06:04,302 INFO L132 encePairwiseOnDemand]: 41/57 looper letters, 269 selfloop transitions, 174 changer transitions 5/539 dead transitions. [2021-03-24 15:06:04,302 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 539 transitions, 6154 flow [2021-03-24 15:06:04,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-24 15:06:04,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-03-24 15:06:04,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 619 transitions. [2021-03-24 15:06:04,303 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7756892230576441 [2021-03-24 15:06:04,303 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 619 transitions. [2021-03-24 15:06:04,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 619 transitions. [2021-03-24 15:06:04,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:06:04,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 619 transitions. [2021-03-24 15:06:04,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 44.214285714285715) internal successors, (619), 14 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) [2021-03-24 15:06:04,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 57.0) internal successors, (855), 15 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:06:04,307 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 57.0) internal successors, (855), 15 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:06:04,307 INFO L185 Difference]: Start difference. First operand has 172 places, 271 transitions, 2717 flow. Second operand 14 states and 619 transitions. [2021-03-24 15:06:04,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 539 transitions, 6154 flow [2021-03-24 15:06:05,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 539 transitions, 6054 flow, removed 24 selfloop flow, removed 6 redundant places. [2021-03-24 15:06:05,285 INFO L241 Difference]: Finished difference. Result has 187 places, 384 transitions, 4436 flow [2021-03-24 15:06:05,285 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=2597, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4436, PETRI_PLACES=187, PETRI_TRANSITIONS=384} [2021-03-24 15:06:05,285 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 133 predicate places. [2021-03-24 15:06:05,285 INFO L480 AbstractCegarLoop]: Abstraction has has 187 places, 384 transitions, 4436 flow [2021-03-24 15:06:05,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:06:05,286 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:06:05,286 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] [2021-03-24 15:06:05,286 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-24 15:06:05,286 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:06:05,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:06:05,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1175157163, now seen corresponding path program 16 times [2021-03-24 15:06:05,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:06:05,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522561808] [2021-03-24 15:06:05,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:06:05,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:06:05,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:05,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:06:05,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:05,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:06:05,325 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:05,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:06:05,334 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:05,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:06:05,343 INFO L142 QuantifierPusher]: treesize reduction 13, result has 58.1 percent of original size [2021-03-24 15:06:05,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-24 15:06:05,364 INFO L142 QuantifierPusher]: treesize reduction 13, result has 58.1 percent of original size [2021-03-24 15:06:05,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-24 15:06:05,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:05,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:06:05,387 INFO L142 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-03-24 15:06:05,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:06:05,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:05,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:06:05,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:06:05,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522561808] [2021-03-24 15:06:05,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:06:05,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-24 15:06:05,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738061878] [2021-03-24 15:06:05,398 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 15:06:05,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:06:05,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 15:06:05,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-03-24 15:06:05,402 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2021-03-24 15:06:05,402 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 384 transitions, 4436 flow. Second operand has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:06:05,402 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:06:05,402 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2021-03-24 15:06:05,402 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:06:08,062 INFO L129 PetriNetUnfolder]: 6524/16896 cut-off events. [2021-03-24 15:06:08,062 INFO L130 PetriNetUnfolder]: For 141783/144220 co-relation queries the response was YES. [2021-03-24 15:06:08,176 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91483 conditions, 16896 events. 6524/16896 cut-off events. For 141783/144220 co-relation queries the response was YES. Maximal size of possible extension queue 814. Compared 188810 event pairs, 771 based on Foata normal form. 1408/17688 useless extension candidates. Maximal degree in co-relation 90774. Up to 3986 conditions per place. [2021-03-24 15:06:08,253 INFO L132 encePairwiseOnDemand]: 42/57 looper letters, 300 selfloop transitions, 274 changer transitions 5/670 dead transitions. [2021-03-24 15:06:08,253 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 670 transitions, 8853 flow [2021-03-24 15:06:08,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-24 15:06:08,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-24 15:06:08,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 575 transitions. [2021-03-24 15:06:08,254 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7759784075573549 [2021-03-24 15:06:08,255 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 575 transitions. [2021-03-24 15:06:08,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 575 transitions. [2021-03-24 15:06:08,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:06:08,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 575 transitions. [2021-03-24 15:06:08,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 44.23076923076923) internal successors, (575), 13 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:06:08,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 57.0) internal successors, (798), 14 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:06:08,257 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 57.0) internal successors, (798), 14 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:06:08,257 INFO L185 Difference]: Start difference. First operand has 187 places, 384 transitions, 4436 flow. Second operand 13 states and 575 transitions. [2021-03-24 15:06:08,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 670 transitions, 8853 flow [2021-03-24 15:06:09,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 670 transitions, 8660 flow, removed 91 selfloop flow, removed 1 redundant places. [2021-03-24 15:06:09,414 INFO L241 Difference]: Finished difference. Result has 209 places, 493 transitions, 6792 flow [2021-03-24 15:06:09,414 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=4237, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6792, PETRI_PLACES=209, PETRI_TRANSITIONS=493} [2021-03-24 15:06:09,414 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 155 predicate places. [2021-03-24 15:06:09,414 INFO L480 AbstractCegarLoop]: Abstraction has has 209 places, 493 transitions, 6792 flow [2021-03-24 15:06:09,415 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:06:09,415 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:06:09,415 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] [2021-03-24 15:06:09,415 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-24 15:06:09,415 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:06:09,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:06:09,415 INFO L82 PathProgramCache]: Analyzing trace with hash 2013620209, now seen corresponding path program 17 times [2021-03-24 15:06:09,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:06:09,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715921143] [2021-03-24 15:06:09,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:06:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:06:09,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:09,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:06:09,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:09,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:06:09,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:09,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:06:09,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:09,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:06:09,471 INFO L142 QuantifierPusher]: treesize reduction 12, result has 55.6 percent of original size [2021-03-24 15:06:09,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 15:06:09,484 INFO L142 QuantifierPusher]: treesize reduction 12, result has 55.6 percent of original size [2021-03-24 15:06:09,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 15:06:09,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:09,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:06:09,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:09,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:06:09,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:09,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:06:09,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:06:09,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715921143] [2021-03-24 15:06:09,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:06:09,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-24 15:06:09,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067716581] [2021-03-24 15:06:09,521 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 15:06:09,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:06:09,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 15:06:09,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-03-24 15:06:09,522 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2021-03-24 15:06:09,523 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 493 transitions, 6792 flow. Second operand has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:06:09,523 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:06:09,523 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2021-03-24 15:06:09,523 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:06:11,508 INFO L129 PetriNetUnfolder]: 3763/10610 cut-off events. [2021-03-24 15:06:11,509 INFO L130 PetriNetUnfolder]: For 123059/124242 co-relation queries the response was YES. [2021-03-24 15:06:11,591 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61625 conditions, 10610 events. 3763/10610 cut-off events. For 123059/124242 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 114268 event pairs, 660 based on Foata normal form. 653/10853 useless extension candidates. Maximal degree in co-relation 61142. Up to 2075 conditions per place. [2021-03-24 15:06:11,788 INFO L132 encePairwiseOnDemand]: 42/57 looper letters, 279 selfloop transitions, 201 changer transitions 10/581 dead transitions. [2021-03-24 15:06:11,788 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 581 transitions, 8631 flow [2021-03-24 15:06:11,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-03-24 15:06:11,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-03-24 15:06:11,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 614 transitions. [2021-03-24 15:06:11,790 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7694235588972431 [2021-03-24 15:06:11,790 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 614 transitions. [2021-03-24 15:06:11,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 614 transitions. [2021-03-24 15:06:11,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:06:11,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 614 transitions. [2021-03-24 15:06:11,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 43.857142857142854) internal successors, (614), 14 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:06:11,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 57.0) internal successors, (855), 15 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:06:11,792 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 57.0) internal successors, (855), 15 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:06:11,792 INFO L185 Difference]: Start difference. First operand has 209 places, 493 transitions, 6792 flow. Second operand 14 states and 614 transitions. [2021-03-24 15:06:11,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 581 transitions, 8631 flow [2021-03-24 15:06:12,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 581 transitions, 8495 flow, removed 65 selfloop flow, removed 3 redundant places. [2021-03-24 15:06:12,405 INFO L241 Difference]: Finished difference. Result has 218 places, 409 transitions, 5792 flow [2021-03-24 15:06:12,405 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=5443, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5792, PETRI_PLACES=218, PETRI_TRANSITIONS=409} [2021-03-24 15:06:12,405 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 164 predicate places. [2021-03-24 15:06:12,405 INFO L480 AbstractCegarLoop]: Abstraction has has 218 places, 409 transitions, 5792 flow [2021-03-24 15:06:12,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:06:12,405 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:06:12,405 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] [2021-03-24 15:06:12,406 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-24 15:06:12,406 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:06:12,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:06:12,406 INFO L82 PathProgramCache]: Analyzing trace with hash -26779319, now seen corresponding path program 18 times [2021-03-24 15:06:12,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:06:12,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786161060] [2021-03-24 15:06:12,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:06:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:06:12,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:12,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:06:12,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:12,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:06:12,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:12,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 15:06:12,461 INFO L142 QuantifierPusher]: treesize reduction 8, result has 75.0 percent of original size [2021-03-24 15:06:12,462 INFO L147 QuantifierPusher]: treesize reduction 3, result has 87.5 percent of original size 21 [2021-03-24 15:06:12,485 INFO L142 QuantifierPusher]: treesize reduction 21, result has 54.3 percent of original size [2021-03-24 15:06:12,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-24 15:06:12,510 INFO L142 QuantifierPusher]: treesize reduction 20, result has 63.6 percent of original size [2021-03-24 15:06:12,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-24 15:06:12,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:12,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 15:06:12,544 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:12,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 15:06:12,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:12,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 15:06:12,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:12,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 15:06:12,578 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:12,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:06:12,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:06:12,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786161060] [2021-03-24 15:06:12,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:06:12,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-24 15:06:12,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733627255] [2021-03-24 15:06:12,579 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-24 15:06:12,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:06:12,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-24 15:06:12,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-03-24 15:06:12,579 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2021-03-24 15:06:12,580 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 409 transitions, 5792 flow. Second operand has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:06:12,580 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:06:12,580 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2021-03-24 15:06:12,580 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:06:15,279 INFO L129 PetriNetUnfolder]: 4751/13376 cut-off events. [2021-03-24 15:06:15,280 INFO L130 PetriNetUnfolder]: For 168315/169999 co-relation queries the response was YES. [2021-03-24 15:06:15,383 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81131 conditions, 13376 events. 4751/13376 cut-off events. For 168315/169999 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 149223 event pairs, 839 based on Foata normal form. 712/13616 useless extension candidates. Maximal degree in co-relation 80530. Up to 2683 conditions per place. [2021-03-24 15:06:15,424 INFO L132 encePairwiseOnDemand]: 41/57 looper letters, 332 selfloop transitions, 362 changer transitions 24/809 dead transitions. [2021-03-24 15:06:15,424 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 809 transitions, 12931 flow [2021-03-24 15:06:15,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-24 15:06:15,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-03-24 15:06:15,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 675 transitions. [2021-03-24 15:06:15,425 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7894736842105263 [2021-03-24 15:06:15,425 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 675 transitions. [2021-03-24 15:06:15,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 675 transitions. [2021-03-24 15:06:15,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:06:15,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 675 transitions. [2021-03-24 15:06:15,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 45.0) internal successors, (675), 15 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:06:15,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 57.0) internal successors, (912), 16 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) [2021-03-24 15:06:15,428 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 57.0) internal successors, (912), 16 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) [2021-03-24 15:06:15,428 INFO L185 Difference]: Start difference. First operand has 218 places, 409 transitions, 5792 flow. Second operand 15 states and 675 transitions. [2021-03-24 15:06:15,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 809 transitions, 12931 flow [2021-03-24 15:06:16,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 809 transitions, 12126 flow, removed 40 selfloop flow, removed 12 redundant places. [2021-03-24 15:06:16,415 INFO L241 Difference]: Finished difference. Result has 232 places, 611 transitions, 9643 flow [2021-03-24 15:06:16,416 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=5389, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=9643, PETRI_PLACES=232, PETRI_TRANSITIONS=611} [2021-03-24 15:06:16,416 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 178 predicate places. [2021-03-24 15:06:16,416 INFO L480 AbstractCegarLoop]: Abstraction has has 232 places, 611 transitions, 9643 flow [2021-03-24 15:06:16,416 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:06:16,416 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:06:16,416 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] [2021-03-24 15:06:16,416 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-24 15:06:16,416 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:06:16,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:06:16,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1108495367, now seen corresponding path program 19 times [2021-03-24 15:06:16,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:06:16,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330743732] [2021-03-24 15:06:16,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:06:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:06:16,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:16,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-24 15:06:16,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:16,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-24 15:06:16,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:16,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:06:16,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:16,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:06:16,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:16,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:06:16,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:16,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 15:06:16,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:16,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:06:16,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:16,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:06:16,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:16,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:06:16,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:06:16,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330743732] [2021-03-24 15:06:16,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:06:16,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 15:06:16,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846006562] [2021-03-24 15:06:16,478 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:06:16,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:06:16,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:06:16,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:06:16,479 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2021-03-24 15:06:16,479 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 611 transitions, 9643 flow. Second operand has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:06:16,479 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:06:16,479 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2021-03-24 15:06:16,480 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:06:19,190 INFO L129 PetriNetUnfolder]: 4605/13626 cut-off events. [2021-03-24 15:06:19,191 INFO L130 PetriNetUnfolder]: For 223020/225959 co-relation queries the response was YES. [2021-03-24 15:06:19,307 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89662 conditions, 13626 events. 4605/13626 cut-off events. For 223020/225959 co-relation queries the response was YES. Maximal size of possible extension queue 670. Compared 156396 event pairs, 1044 based on Foata normal form. 760/13952 useless extension candidates. Maximal degree in co-relation 89047. Up to 4250 conditions per place. [2021-03-24 15:06:19,354 INFO L132 encePairwiseOnDemand]: 44/57 looper letters, 405 selfloop transitions, 247 changer transitions 23/766 dead transitions. [2021-03-24 15:06:19,354 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 766 transitions, 13311 flow [2021-03-24 15:06:19,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 15:06:19,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 15:06:19,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 365 transitions. [2021-03-24 15:06:19,356 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8004385964912281 [2021-03-24 15:06:19,357 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 365 transitions. [2021-03-24 15:06:19,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 365 transitions. [2021-03-24 15:06:19,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:06:19,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 365 transitions. [2021-03-24 15:06:19,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 45.625) internal successors, (365), 8 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:06:19,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:06:19,358 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:06:19,358 INFO L185 Difference]: Start difference. First operand has 232 places, 611 transitions, 9643 flow. Second operand 8 states and 365 transitions. [2021-03-24 15:06:19,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 766 transitions, 13311 flow [2021-03-24 15:06:20,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 766 transitions, 12698 flow, removed 306 selfloop flow, removed 1 redundant places. [2021-03-24 15:06:20,639 INFO L241 Difference]: Finished difference. Result has 244 places, 637 transitions, 10733 flow [2021-03-24 15:06:20,640 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=8282, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10733, PETRI_PLACES=244, PETRI_TRANSITIONS=637} [2021-03-24 15:06:20,640 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 190 predicate places. [2021-03-24 15:06:20,640 INFO L480 AbstractCegarLoop]: Abstraction has has 244 places, 637 transitions, 10733 flow [2021-03-24 15:06:20,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:06:20,640 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:06:20,640 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] [2021-03-24 15:06:20,640 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-03-24 15:06:20,640 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:06:20,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:06:20,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1867951567, now seen corresponding path program 20 times [2021-03-24 15:06:20,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:06:20,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759963819] [2021-03-24 15:06:20,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:06:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:06:20,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:20,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:06:20,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:20,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:06:20,718 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 15:06:20,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 15:06:20,722 INFO L142 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-03-24 15:06:20,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 15:06:20,740 INFO L142 QuantifierPusher]: treesize reduction 34, result has 46.0 percent of original size [2021-03-24 15:06:20,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 15:06:20,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:20,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 15:06:20,774 INFO L142 QuantifierPusher]: treesize reduction 11, result has 71.1 percent of original size [2021-03-24 15:06:20,778 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 15:06:20,795 INFO L142 QuantifierPusher]: treesize reduction 20, result has 55.6 percent of original size [2021-03-24 15:06:20,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-24 15:06:20,823 INFO L142 QuantifierPusher]: treesize reduction 30, result has 28.6 percent of original size [2021-03-24 15:06:20,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 15:06:20,833 INFO L142 QuantifierPusher]: treesize reduction 11, result has 52.2 percent of original size [2021-03-24 15:06:20,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 15:06:20,834 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:20,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:06:20,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:06:20,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759963819] [2021-03-24 15:06:20,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:06:20,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-24 15:06:20,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145572374] [2021-03-24 15:06:20,835 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 15:06:20,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:06:20,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 15:06:20,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-03-24 15:06:20,836 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2021-03-24 15:06:20,836 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 637 transitions, 10733 flow. Second operand has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:06:20,836 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:06:20,836 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2021-03-24 15:06:20,836 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:06:24,990 INFO L129 PetriNetUnfolder]: 5838/17617 cut-off events. [2021-03-24 15:06:24,990 INFO L130 PetriNetUnfolder]: For 296461/299921 co-relation queries the response was YES. [2021-03-24 15:06:25,184 INFO L84 FinitePrefix]: Finished finitePrefix Result has 117623 conditions, 17617 events. 5838/17617 cut-off events. For 296461/299921 co-relation queries the response was YES. Maximal size of possible extension queue 918. Compared 214455 event pairs, 1468 based on Foata normal form. 846/17839 useless extension candidates. Maximal degree in co-relation 116993. Up to 7120 conditions per place. [2021-03-24 15:06:25,252 INFO L132 encePairwiseOnDemand]: 40/57 looper letters, 588 selfloop transitions, 397 changer transitions 8/1084 dead transitions. [2021-03-24 15:06:25,252 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 1084 transitions, 20405 flow [2021-03-24 15:06:25,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-24 15:06:25,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-03-24 15:06:25,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 788 transitions. [2021-03-24 15:06:25,254 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7680311890838206 [2021-03-24 15:06:25,254 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 788 transitions. [2021-03-24 15:06:25,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 788 transitions. [2021-03-24 15:06:25,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:06:25,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 788 transitions. [2021-03-24 15:06:25,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 43.77777777777778) internal successors, (788), 18 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) [2021-03-24 15:06:25,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 57.0) internal successors, (1083), 19 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:06:25,257 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 57.0) internal successors, (1083), 19 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:06:25,257 INFO L185 Difference]: Start difference. First operand has 244 places, 637 transitions, 10733 flow. Second operand 18 states and 788 transitions. [2021-03-24 15:06:25,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 1084 transitions, 20405 flow [2021-03-24 15:06:27,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 1084 transitions, 20197 flow, removed 79 selfloop flow, removed 1 redundant places. [2021-03-24 15:06:27,272 INFO L241 Difference]: Finished difference. Result has 274 places, 904 transitions, 17388 flow [2021-03-24 15:06:27,273 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=10610, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=17388, PETRI_PLACES=274, PETRI_TRANSITIONS=904} [2021-03-24 15:06:27,273 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 220 predicate places. [2021-03-24 15:06:27,273 INFO L480 AbstractCegarLoop]: Abstraction has has 274 places, 904 transitions, 17388 flow [2021-03-24 15:06:27,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:06:27,273 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:06:27,274 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] [2021-03-24 15:06:27,274 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-03-24 15:06:27,274 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:06:27,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:06:27,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1209441581, now seen corresponding path program 21 times [2021-03-24 15:06:27,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:06:27,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500969045] [2021-03-24 15:06:27,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:06:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:06:27,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:27,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-24 15:06:27,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:27,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:06:27,319 INFO L142 QuantifierPusher]: treesize reduction 7, result has 75.0 percent of original size [2021-03-24 15:06:27,319 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:06:27,341 INFO L142 QuantifierPusher]: treesize reduction 7, result has 72.0 percent of original size [2021-03-24 15:06:27,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-24 15:06:27,356 INFO L142 QuantifierPusher]: treesize reduction 7, result has 75.9 percent of original size [2021-03-24 15:06:27,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-24 15:06:27,372 INFO L142 QuantifierPusher]: treesize reduction 28, result has 49.1 percent of original size [2021-03-24 15:06:27,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 15:06:27,379 INFO L142 QuantifierPusher]: treesize reduction 12, result has 36.8 percent of original size [2021-03-24 15:06:27,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:06:27,381 INFO L142 QuantifierPusher]: treesize reduction 12, result has 36.8 percent of original size [2021-03-24 15:06:27,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:06:27,387 INFO L142 QuantifierPusher]: treesize reduction 12, result has 36.8 percent of original size [2021-03-24 15:06:27,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:06:27,397 INFO L142 QuantifierPusher]: treesize reduction 6, result has 78.6 percent of original size [2021-03-24 15:06:27,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-24 15:06:27,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:27,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:06:27,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:06:27,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500969045] [2021-03-24 15:06:27,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:06:27,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-24 15:06:27,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757919675] [2021-03-24 15:06:27,413 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 15:06:27,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:06:27,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 15:06:27,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-03-24 15:06:27,414 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2021-03-24 15:06:27,414 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 904 transitions, 17388 flow. Second operand has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:06:27,414 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:06:27,415 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2021-03-24 15:06:27,415 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:06:31,925 INFO L129 PetriNetUnfolder]: 4694/15053 cut-off events. [2021-03-24 15:06:31,925 INFO L130 PetriNetUnfolder]: For 306057/308885 co-relation queries the response was YES. [2021-03-24 15:06:32,053 INFO L84 FinitePrefix]: Finished finitePrefix Result has 108395 conditions, 15053 events. 4694/15053 cut-off events. For 306057/308885 co-relation queries the response was YES. Maximal size of possible extension queue 849. Compared 182663 event pairs, 830 based on Foata normal form. 1189/15752 useless extension candidates. Maximal degree in co-relation 107769. Up to 2335 conditions per place. [2021-03-24 15:06:32,101 INFO L132 encePairwiseOnDemand]: 42/57 looper letters, 381 selfloop transitions, 562 changer transitions 109/1143 dead transitions. [2021-03-24 15:06:32,101 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 1143 transitions, 23750 flow [2021-03-24 15:06:32,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-03-24 15:06:32,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-03-24 15:06:32,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 820 transitions. [2021-03-24 15:06:32,102 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7571560480147738 [2021-03-24 15:06:32,102 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 820 transitions. [2021-03-24 15:06:32,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 820 transitions. [2021-03-24 15:06:32,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:06:32,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 820 transitions. [2021-03-24 15:06:32,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 43.1578947368421) internal successors, (820), 19 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:06:32,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 57.0) internal successors, (1140), 20 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:06:32,105 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 57.0) internal successors, (1140), 20 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:06:32,105 INFO L185 Difference]: Start difference. First operand has 274 places, 904 transitions, 17388 flow. Second operand 19 states and 820 transitions. [2021-03-24 15:06:32,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 1143 transitions, 23750 flow [2021-03-24 15:06:34,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 1143 transitions, 23438 flow, removed 156 selfloop flow, removed 0 redundant places. [2021-03-24 15:06:34,108 INFO L241 Difference]: Finished difference. Result has 306 places, 923 transitions, 19409 flow [2021-03-24 15:06:34,109 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=15913, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=850, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=429, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=19409, PETRI_PLACES=306, PETRI_TRANSITIONS=923} [2021-03-24 15:06:34,109 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 252 predicate places. [2021-03-24 15:06:34,109 INFO L480 AbstractCegarLoop]: Abstraction has has 306 places, 923 transitions, 19409 flow [2021-03-24 15:06:34,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:06:34,109 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:06:34,109 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] [2021-03-24 15:06:34,109 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-03-24 15:06:34,109 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:06:34,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:06:34,110 INFO L82 PathProgramCache]: Analyzing trace with hash 521474239, now seen corresponding path program 22 times [2021-03-24 15:06:34,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:06:34,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630167882] [2021-03-24 15:06:34,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:06:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:06:34,129 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:34,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:06:34,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:34,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:06:34,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:34,145 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:06:34,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:34,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:06:34,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:34,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 15:06:34,166 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-03-24 15:06:34,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 15:06:34,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:34,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:06:34,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:06:34,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630167882] [2021-03-24 15:06:34,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:06:34,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 15:06:34,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122434696] [2021-03-24 15:06:34,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 15:06:34,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:06:34,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 15:06:34,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-03-24 15:06:34,180 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2021-03-24 15:06:34,180 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 923 transitions, 19409 flow. Second operand has 8 states, 8 states have (on average 36.375) internal successors, (291), 8 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) [2021-03-24 15:06:34,181 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:06:34,181 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2021-03-24 15:06:34,181 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:06:39,401 INFO L129 PetriNetUnfolder]: 4940/16687 cut-off events. [2021-03-24 15:06:39,401 INFO L130 PetriNetUnfolder]: For 402520/405992 co-relation queries the response was YES. [2021-03-24 15:06:39,612 INFO L84 FinitePrefix]: Finished finitePrefix Result has 127349 conditions, 16687 events. 4940/16687 cut-off events. For 402520/405992 co-relation queries the response was YES. Maximal size of possible extension queue 919. Compared 210513 event pairs, 1193 based on Foata normal form. 1085/17253 useless extension candidates. Maximal degree in co-relation 126511. Up to 2926 conditions per place. [2021-03-24 15:06:39,669 INFO L132 encePairwiseOnDemand]: 43/57 looper letters, 566 selfloop transitions, 475 changer transitions 74/1206 dead transitions. [2021-03-24 15:06:39,669 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 1206 transitions, 27047 flow [2021-03-24 15:06:39,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-24 15:06:39,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-24 15:06:39,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 540 transitions. [2021-03-24 15:06:39,670 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7894736842105263 [2021-03-24 15:06:39,670 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 540 transitions. [2021-03-24 15:06:39,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 540 transitions. [2021-03-24 15:06:39,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:06:39,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 540 transitions. [2021-03-24 15:06:39,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 45.0) internal successors, (540), 12 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:06:39,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 57.0) internal successors, (741), 13 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:06:39,671 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 57.0) internal successors, (741), 13 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:06:39,672 INFO L185 Difference]: Start difference. First operand has 306 places, 923 transitions, 19409 flow. Second operand 12 states and 540 transitions. [2021-03-24 15:06:39,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 1206 transitions, 27047 flow [2021-03-24 15:06:42,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 1206 transitions, 26328 flow, removed 321 selfloop flow, removed 6 redundant places. [2021-03-24 15:06:42,830 INFO L241 Difference]: Finished difference. Result has 317 places, 962 transitions, 21417 flow [2021-03-24 15:06:42,831 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=18619, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=915, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=394, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=21417, PETRI_PLACES=317, PETRI_TRANSITIONS=962} [2021-03-24 15:06:42,831 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 263 predicate places. [2021-03-24 15:06:42,831 INFO L480 AbstractCegarLoop]: Abstraction has has 317 places, 962 transitions, 21417 flow [2021-03-24 15:06:42,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 36.375) internal successors, (291), 8 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) [2021-03-24 15:06:42,831 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:06:42,832 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] [2021-03-24 15:06:42,832 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-03-24 15:06:42,832 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:06:42,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:06:42,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1667129191, now seen corresponding path program 23 times [2021-03-24 15:06:42,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:06:42,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68681837] [2021-03-24 15:06:42,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:06:42,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:06:42,856 INFO L142 QuantifierPusher]: treesize reduction 29, result has 44.2 percent of original size [2021-03-24 15:06:42,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 15:06:42,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:42,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:06:42,879 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:42,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:06:42,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:42,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:06:42,888 INFO L142 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-03-24 15:06:42,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 15:06:42,900 INFO L142 QuantifierPusher]: treesize reduction 21, result has 55.3 percent of original size [2021-03-24 15:06:42,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-03-24 15:06:42,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:42,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-24 15:06:42,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:42,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-24 15:06:42,966 INFO L142 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-03-24 15:06:42,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-24 15:06:42,986 INFO L142 QuantifierPusher]: treesize reduction 17, result has 32.0 percent of original size [2021-03-24 15:06:42,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-24 15:06:42,996 INFO L142 QuantifierPusher]: treesize reduction 8, result has 50.0 percent of original size [2021-03-24 15:06:42,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-24 15:06:42,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:42,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 15:06:43,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:43,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:06:43,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:06:43,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68681837] [2021-03-24 15:06:43,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:06:43,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-03-24 15:06:43,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736421476] [2021-03-24 15:06:43,012 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-24 15:06:43,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:06:43,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-24 15:06:43,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-03-24 15:06:43,014 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2021-03-24 15:06:43,014 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 962 transitions, 21417 flow. Second operand has 12 states, 12 states have (on average 35.583333333333336) internal successors, (427), 12 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:06:43,015 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:06:43,015 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2021-03-24 15:06:43,015 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:06:51,967 INFO L129 PetriNetUnfolder]: 6762/23394 cut-off events. [2021-03-24 15:06:51,967 INFO L130 PetriNetUnfolder]: For 631447/636566 co-relation queries the response was YES. [2021-03-24 15:06:52,357 INFO L84 FinitePrefix]: Finished finitePrefix Result has 183631 conditions, 23394 events. 6762/23394 cut-off events. For 631447/636566 co-relation queries the response was YES. Maximal size of possible extension queue 1296. Compared 314992 event pairs, 957 based on Foata normal form. 2001/24834 useless extension candidates. Maximal degree in co-relation 182445. Up to 4250 conditions per place. [2021-03-24 15:06:52,445 INFO L132 encePairwiseOnDemand]: 38/57 looper letters, 691 selfloop transitions, 840 changer transitions 71/1693 dead transitions. [2021-03-24 15:06:52,445 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 1693 transitions, 39933 flow [2021-03-24 15:06:52,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-03-24 15:06:52,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-03-24 15:06:52,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1658 transitions. [2021-03-24 15:06:52,448 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.765466297322253 [2021-03-24 15:06:52,448 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 1658 transitions. [2021-03-24 15:06:52,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 1658 transitions. [2021-03-24 15:06:52,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:06:52,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 1658 transitions. [2021-03-24 15:06:52,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 43.63157894736842) internal successors, (1658), 38 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:06:52,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 57.0) internal successors, (2223), 39 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:06:52,452 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 57.0) internal successors, (2223), 39 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:06:52,453 INFO L185 Difference]: Start difference. First operand has 317 places, 962 transitions, 21417 flow. Second operand 38 states and 1658 transitions. [2021-03-24 15:06:52,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 1693 transitions, 39933 flow [2021-03-24 15:06:57,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 1693 transitions, 39461 flow, removed 221 selfloop flow, removed 3 redundant places. [2021-03-24 15:06:57,978 INFO L241 Difference]: Finished difference. Result has 385 places, 1331 transitions, 33050 flow [2021-03-24 15:06:57,979 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=20726, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=946, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=502, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=33050, PETRI_PLACES=385, PETRI_TRANSITIONS=1331} [2021-03-24 15:06:57,979 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 331 predicate places. [2021-03-24 15:06:57,979 INFO L480 AbstractCegarLoop]: Abstraction has has 385 places, 1331 transitions, 33050 flow [2021-03-24 15:06:57,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 35.583333333333336) internal successors, (427), 12 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:06:57,979 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:06:57,979 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] [2021-03-24 15:06:57,979 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-03-24 15:06:57,979 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:06:57,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:06:57,980 INFO L82 PathProgramCache]: Analyzing trace with hash -332008891, now seen corresponding path program 24 times [2021-03-24 15:06:57,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:06:57,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654168730] [2021-03-24 15:06:57,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:06:57,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:06:57,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:57,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-24 15:06:58,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:58,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-24 15:06:58,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:58,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:06:58,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:58,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:06:58,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:58,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:06:58,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:58,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 15:06:58,055 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-03-24 15:06:58,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 15:06:58,066 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-03-24 15:06:58,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:06:58,067 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:06:58,067 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:06:58,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:06:58,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654168730] [2021-03-24 15:06:58,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:06:58,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 15:06:58,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261114035] [2021-03-24 15:06:58,068 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 15:06:58,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:06:58,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 15:06:58,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-03-24 15:06:58,069 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2021-03-24 15:06:58,070 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 1331 transitions, 33050 flow. Second operand has 8 states, 8 states have (on average 36.375) internal successors, (291), 8 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) [2021-03-24 15:06:58,070 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:06:58,070 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2021-03-24 15:06:58,070 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:07:07,954 INFO L129 PetriNetUnfolder]: 6711/24024 cut-off events. [2021-03-24 15:07:07,954 INFO L130 PetriNetUnfolder]: For 871634/877501 co-relation queries the response was YES. [2021-03-24 15:07:08,517 INFO L84 FinitePrefix]: Finished finitePrefix Result has 211202 conditions, 24024 events. 6711/24024 cut-off events. For 871634/877501 co-relation queries the response was YES. Maximal size of possible extension queue 1333. Compared 328964 event pairs, 1762 based on Foata normal form. 955/24305 useless extension candidates. Maximal degree in co-relation 209939. Up to 11598 conditions per place. [2021-03-24 15:07:08,810 INFO L132 encePairwiseOnDemand]: 44/57 looper letters, 1045 selfloop transitions, 300 changer transitions 42/1478 dead transitions. [2021-03-24 15:07:08,810 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 1478 transitions, 39429 flow [2021-03-24 15:07:08,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-24 15:07:08,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-24 15:07:08,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 556 transitions. [2021-03-24 15:07:08,812 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7503373819163293 [2021-03-24 15:07:08,812 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 556 transitions. [2021-03-24 15:07:08,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 556 transitions. [2021-03-24 15:07:08,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:07:08,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 556 transitions. [2021-03-24 15:07:08,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 42.76923076923077) internal successors, (556), 13 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) [2021-03-24 15:07:08,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 57.0) internal successors, (798), 14 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:07:08,814 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 57.0) internal successors, (798), 14 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:07:08,814 INFO L185 Difference]: Start difference. First operand has 385 places, 1331 transitions, 33050 flow. Second operand 13 states and 556 transitions. [2021-03-24 15:07:08,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 1478 transitions, 39429 flow [2021-03-24 15:07:18,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 1478 transitions, 38187 flow, removed 621 selfloop flow, removed 0 redundant places. [2021-03-24 15:07:18,165 INFO L241 Difference]: Finished difference. Result has 407 places, 1386 transitions, 34744 flow [2021-03-24 15:07:18,166 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=31400, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1030, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=34744, PETRI_PLACES=407, PETRI_TRANSITIONS=1386} [2021-03-24 15:07:18,166 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 353 predicate places. [2021-03-24 15:07:18,166 INFO L480 AbstractCegarLoop]: Abstraction has has 407 places, 1386 transitions, 34744 flow [2021-03-24 15:07:18,167 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 36.375) internal successors, (291), 8 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) [2021-03-24 15:07:18,167 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:07:18,167 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] [2021-03-24 15:07:18,167 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-03-24 15:07:18,167 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:07:18,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:07:18,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1128110205, now seen corresponding path program 25 times [2021-03-24 15:07:18,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:07:18,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174053904] [2021-03-24 15:07:18,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:07:18,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:07:18,193 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:07:18,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-24 15:07:18,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:07:18,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:07:18,219 INFO L142 QuantifierPusher]: treesize reduction 45, result has 22.4 percent of original size [2021-03-24 15:07:18,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:07:18,232 INFO L142 QuantifierPusher]: treesize reduction 10, result has 67.7 percent of original size [2021-03-24 15:07:18,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:07:18,247 INFO L142 QuantifierPusher]: treesize reduction 17, result has 50.0 percent of original size [2021-03-24 15:07:18,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:07:18,266 INFO L142 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-03-24 15:07:18,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:07:18,281 INFO L142 QuantifierPusher]: treesize reduction 4, result has 87.1 percent of original size [2021-03-24 15:07:18,281 INFO L147 QuantifierPusher]: treesize reduction 5, result has 81.5 percent of original size 22 [2021-03-24 15:07:18,307 INFO L142 QuantifierPusher]: treesize reduction 9, result has 69.0 percent of original size [2021-03-24 15:07:18,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-24 15:07:18,334 INFO L142 QuantifierPusher]: treesize reduction 7, result has 74.1 percent of original size [2021-03-24 15:07:18,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-24 15:07:18,362 INFO L142 QuantifierPusher]: treesize reduction 15, result has 59.5 percent of original size [2021-03-24 15:07:18,365 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-24 15:07:18,387 INFO L142 QuantifierPusher]: treesize reduction 15, result has 46.4 percent of original size [2021-03-24 15:07:18,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:07:18,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:07:18,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:07:18,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:07:18,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174053904] [2021-03-24 15:07:18,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:07:18,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-03-24 15:07:18,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339656903] [2021-03-24 15:07:18,401 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-24 15:07:18,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:07:18,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-24 15:07:18,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-03-24 15:07:18,402 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2021-03-24 15:07:18,402 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 1386 transitions, 34744 flow. Second operand has 13 states, 13 states have (on average 35.46153846153846) internal successors, (461), 13 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:07:18,402 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:07:18,402 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2021-03-24 15:07:18,402 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:07:24,611 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[][335], [Black: 243#(and (<= 1 n3) (<= 0 n2)), Black: 244#(and (<= 1 n3) (<= 1 n2)), Black: 486#(and (<= n1 n2) (<= n3 n2) (<= 0 n3)), Black: 245#(and (<= 1 n3) (<= (+ n3 1) n2)), Black: 487#(and (<= n3 n2) (<= 0 n3)), Black: 247#(and (<= n1 n3) (<= 0 n3) (<= 0 n2)), Black: 490#(or (and (<= n3 (+ n1 1)) (<= 1 n1) (<= (+ n1 1) n3)) (and (<= n3 (+ n2 1)) (<= 0 n2) (<= (+ n2 1) n3))), Black: 249#(and (<= n1 n3) (<= 1 n3) (<= 0 n2)), Black: 491#(or (and (<= n3 (+ n1 1)) (<= 1 n1) (<= (+ n1 1) n3)) (and (< n2 (+ n3 1)) (<= n3 n2) (<= 1 n2))), Black: 251#(and (<= n1 n3) (<= 1 n3) (<= 1 n2)), Black: 492#(or (and (< n2 (+ n3 1)) (<= n3 n2) (<= 1 n2)) (and (< n1 (+ n3 1)) (<= n3 n1) (<= 2 n1))), Black: 253#(and (<= n1 n3) (<= 1 n3) (<= (+ n3 1) n2)), Black: 493#(and (< n2 (+ n3 1)) (<= n3 n2) (<= 1 n2)), 7#L30true, Black: 495#(and (<= n1 n2) (or (= n3 n2) (and (= n3 n1) (<= 1 n1))) (<= 0 n3)), Black: 499#(and (or (= n3 n2) (and (= n3 n1) (<= 1 n1))) (<= 0 n2)), Black: 501#(and (or (and (<= n3 (+ n1 1)) (<= 1 n1) (<= (+ n1 1) n3)) (and (< n2 (+ n3 1)) (<= 1 n2))) (<= n3 n2)), Black: 503#(and (or (and (< n2 (+ n3 1)) (<= 1 n2)) (and (< n1 (+ n3 1)) (<= n3 n1) (<= 2 n1))) (<= n3 n2)), Black: 505#(and (<= n1 n2) (or (and (<= n3 (+ n1 1)) (<= 1 n1) (<= (+ n1 1) n3)) (and (< n2 (+ n3 1)) (<= 1 n2))) (<= n3 n2)), Black: 509#(and (<= n1 n2) (< n2 (+ n3 1)) (<= n3 n2) (<= 1 n2)), Black: 279#(and (<= i2 0) (<= 2 i) (<= i 2) (<= 1 i3) (<= i3 1) (<= 0 i2)), 544#(and (< n1 (+ n2 1)) (<= 1 n1) (<= 0 n3) (<= n3 n1)), 32#L77true, Black: 265#(and (<= i 0) (<= 0 i)), Black: 266#(and (<= i2 0) (<= 0 i2)), Black: 285#(and (<= i2 0) (<= 2 i1) (< 2 i) (<= i 3) (<= 1 i3) (<= i3 1) (<= 0 i2) (<= i1 2)), 48#L45true, Black: 546#(and (<= n3 n2) (<= 0 n3) (<= n3 n1) (<= 1 n2)), 50#thread3EXITtrue, Black: 548#(and (<= 1 n1) (<= n3 n2) (<= 0 n3) (<= n3 n1) (<= 1 n2)), Black: 550#(and (<= 0 n1) (or (and (<= n3 n2) (<= 0 n3) (<= n3 n1)) (= n3 n2)) (<= 1 n2)), Black: 556#(and (< n1 (+ n2 1)) (<= 1 n1) (or (and (<= 0 n3) (<= n3 n1)) (= n3 n2))), Black: 558#(and (<= 1 n1) (or (and (<= n3 n2) (<= 0 n3) (<= n3 n1)) (= n3 n2)) (<= 1 n2)), Black: 529#(and (<= n1 n2) (<= 0 n3) (<= n3 n1)), Black: 530#(and (<= n3 n2) (<= 0 n3) (<= n3 n1)), Black: 535#(and (<= 1 n1) (<= 1 n2)), Black: 536#(and (< n1 (+ n2 1)) (<= 1 n1)), Black: 538#(and (<= 0 n1) (or (and (<= n3 n2) (<= 0 n3) (<= n3 n1)) (= n3 n2)) (<= 0 n2)), Black: 304#(and (<= i2 0) (<= 1 i) (<= 0 i2) (<= i 1)), Black: 540#(and (<= n1 n2) (<= 0 n3) (<= n3 n1) (<= 1 n2)), Black: 312#(and (<= i2 0) (<= i1 1) (<= 0 i2) (<= 1 i1)), Black: 542#(and (<= 0 n1) (<= 0 n2) (or (and (<= 0 n3) (<= n3 n1)) (= n3 n2))), Black: 314#(and (<= i2 0) (<= i1 1) (< 2 i) (<= i 3) (<= i3 2) (<= 2 i3) (<= 0 i2) (<= 1 i1)), 319#true, 577#(and (<= n3 n2) (<= 0 n2)), 79#(and (<= i3 0) (<= 1 i) (<= i 1) (<= 0 i3)), Black: 576#(and (<= n1 n2) (<= n3 n2) (<= 0 n2)), Black: 578#(<= 0 n2), Black: 579#(and (<= n2 n3) (<= 0 n2)), Black: 322#(and (<= 0 n1) (<= n3 n1)), Black: 580#(and (<= 0 n2) (<= (+ n2 1) n3)), Black: 323#(and (<= (+ n3 1) n1) (<= 1 n1)), Black: 581#(and (< n2 (+ n3 1)) (<= 1 n2)), Black: 583#(and (<= n1 n2) (<= n3 n2) (<= n2 n3) (<= 0 n2)), Black: 587#(and (< n2 (+ n3 1)) (<= n3 n2) (<= 1 n2)), Black: 328#(and (<= 2 n3) (< n3 n1)), Black: 589#(and (<= n1 n2) (< n2 (+ n3 1)) (<= n3 n2) (<= 1 n2)), Black: 330#(and (<= (+ n3 1) n1) (<= 1 n1) (<= n2 n1)), Black: 83#(and (<= 1 i2) (<= i3 0) (<= 2 i) (<= i 2) (<= i2 1) (<= 0 i3)), 95#true, 615#(and (<= 0 n1) (<= n3 n2) (<= 0 n3) (or (<= n1 n2) (= n3 n2))), 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)), 365#(and (<= 1 n1) (<= 0 n3) (<= n3 n1) (<= 0 n2)), Black: 112#e2, 115#true, Black: 352#(and (<= 0 n1) (<= 0 n3) (<= 0 n2)), Black: 369#(and (<= 1 n3) (<= n3 n1) (<= 0 n2)), Black: 353#(and (<= 1 n1) (<= 0 n3) (<= 0 n2)), Black: 371#(and (<= 1 n3) (<= 0 n2) (< n3 n1)), Black: 117#(and (<= n1 n3) (<= n3 n2) (<= n2 n3) (<= 0 n2)), Black: 357#(and (<= 0 n3) (<= n2 n1) (<= n3 n1) (<= 0 n2)), Black: 373#(and (<= 1 n3) (<= n2 n1) (<= 0 n2) (< n3 n1)), Black: 119#(and (< 0 n3) (<= 0 n2)), Black: 120#(and (< 0 n3) (<= 1 n2)), Black: 359#(and (<= 1 n1) (<= 0 n3) (<= n2 n1) (<= n3 n1) (<= 0 n2)), Black: 361#(and (<= 0 n3) (<= n3 n1) (<= 0 n2)), Black: 121#(and (< n2 (+ n3 1)) (<= 1 n2)), Black: 367#(and (<= 1 n3) (<= 1 n1) (<= 0 n2)), Black: 129#e3, 132#true, Black: 144#(and (<= 1 i) (<= i1 0) (<= 0 i1) (<= i 1)), Black: 148#(and (<= 2 i) (<= i 2) (<= 1 i3) (<= i3 1) (<= i1 0) (<= 0 i1)), Black: 134#(and (<= i 0) (<= 0 i)), Black: 135#(and (<= i1 0) (<= 0 i1)), Black: 641#(and (<= 1 n3) (<= 1 n1) (or (<= n1 n2) (= n3 n1)) (<= 0 n2)), Black: 643#(and (<= n1 n2) (<= 1 n1) (<= n3 n2) (or (<= 1 n3) (<= (+ n1 1) n2))), Black: 645#(and (<= 1 n3) (<= 1 n1) (<= n3 n2)), Black: 647#(and (<= 1 n1) (<= n3 n2) (or (<= 1 n3) (< n1 (+ n2 1)))), Black: 411#(and (<= 1 n3) (<= 1 n1) (<= 0 n2)), Black: 649#(and (<= 0 n1) (<= n3 n2) (or (<= 1 n3) (<= (+ n1 1) n2))), Black: 651#(and (<= 0 n1) (<= n3 n2) (or (<= n1 n2) (<= 1 n3))), Black: 653#(and (<= 1 n3) (<= 1 n1) (<= n3 n2) (or (<= n1 n2) (= n3 n2))), Black: 655#(and (<= 1 n1) (<= n3 n2) (or (<= 1 n3) (<= (+ n1 1) n2))), Black: 657#(and (<= 1 n1) (or (<= 1 n3) (<= (+ n1 1) n2))), 169#(and (<= 0 n3) (<= 1 n2)), Black: 659#(and (<= 1 n3) (<= 1 n1)), Black: 166#(and (<= n2 n3) (<= 1 n2)), Black: 661#(and (<= 1 n3) (<= (+ n3 1) n1) (<= n3 n2)), Black: 663#(and (<= 1 n3) (<= (+ n3 1) n1) (or (<= n1 n2) (= n3 n2))), Black: 665#(and (<= n1 n2) (<= 1 n1) (<= n3 n2) (<= 0 n3) (or (<= 1 n3) (<= (+ n1 1) n2))), Black: 667#(and (<= n1 n2) (<= 1 n3) (<= (+ n3 1) n1)), Black: 604#(and (<= 0 n1) (<= n3 n2) (<= 0 n2)), Black: 669#(and (<= 1 n1) (<= n3 n2) (<= 0 n3) (or (<= 1 n3) (< n1 (+ n2 1)))), Black: 605#(and (<= 0 n1) (or (<= n1 n2) (= n3 n1)) (<= 0 n2)), Black: 176#e1, Black: 607#(and (<= 0 n1) (or (<= n1 n2) (<= 1 n3))), Black: 671#(and (<= 0 n1) (<= n3 n2) (<= 0 n3) (or (<= n1 n2) (= n3 n2)) (or (<= 1 n3) (<= (+ n1 1) n2))), 179#true, Black: 608#(and (<= 0 n1) (or (<= 1 n3) (<= (+ n1 1) n2))), Black: 609#(and (<= 1 n1) (or (<= 1 n3) (< n1 (+ n2 1)))), Black: 611#(and (<= 1 n3) (<= (+ n3 1) n1)), Black: 617#(and (<= n1 n2) (<= 0 n1) (<= n3 n2) (<= 0 n3) (or (<= 1 n3) (<= (+ n1 1) n2))), Black: 619#(and (<= n1 n2) (<= 0 n1) (<= n3 n2) (<= 0 n3)), Black: 183#(and (<= n2 (+ n3 1)) (<= 1 n2)), Black: 621#(and (<= 0 n1) (or (<= 1 n3) (<= (+ n1 1) n2)) (or (<= n1 n2) (= n3 n1)) (<= 0 n2)), Black: 184#(and (<= n2 n3) (<= 1 n2)), Black: 623#(and (<= n1 n2) (<= 1 n1) (<= n3 n2) (<= 0 n3)), Black: 625#(and (<= n1 n2) (<= 1 n3) (<= 1 n1) (<= n3 n2)), Black: 627#(and (<= 0 n1) (<= n3 n2) (<= 0 n3)), Black: 631#(and (<= n1 n2) (<= 0 n1) (<= n3 n2) (or (<= 1 n3) (<= (+ n1 1) n2))), Black: 633#(and (<= n1 n2) (< n2 (+ n3 1)) (<= 1 n1) (<= n3 n2)), Black: 635#(and (<= n1 n2) (<= 1 n1) (<= n3 n2)), 448#(and (<= 1 n1) (<= 0 n3) (<= 1 n2)), Black: 637#(and (<= n1 n2) (<= 0 n1) (<= n3 n2)), Black: 639#(and (<= 1 n1) (or (<= n1 n2) (= n3 n1)) (<= 0 n2)), Black: 450#(and (<= n1 n3) (<= (+ n2 1) n1) (<= 1 n2)), Black: 434#(and (<= n1 n3) (<= n1 n2) (<= 0 n1)), Black: 436#(and (<= n1 n3) (<= 0 n1) (<= 0 n2)), Black: 452#(and (<= (+ n2 1) n1) (<= 0 n3) (<= 1 n2)), Black: 454#(and (<= n1 n3) (<= n1 n2) (<= 1 n1)), Black: 438#(and (<= n1 n3) (<= n1 n2) (<= 0 n1) (<= 1 n2)), Black: 440#(and (or (<= n1 n3) (= n2 n1)) (<= 1 n1) (<= 0 n3) (<= 1 n2)), Black: 442#(and (<= 0 n1) (<= 0 n3) (<= 1 n2)), Black: 427#(and (or (<= n1 n3) (= n2 n1)) (<= 0 n1) (<= 0 n3) (<= 0 n2)), Black: 444#(and (<= n1 n3) (<= 0 n1) (<= 1 n2)), Black: 446#(and (<= n1 n3) (<= 1 n1) (<= 1 n2)), 724#(and (< n1 (+ n2 1)) (<= 1 n1) (<= 0 n3) (<= n3 n1)), 468#true, Black: 200#(and (<= 1 i) (<= i1 0) (<= 0 i1) (<= i 1)), Black: 720#(and (<= 0 n1) (<= n3 n2) (<= (+ n1 1) n2)), Black: 722#(and (< n1 (+ n2 1)) (<= 1 n1) (<= n3 n2)), Black: 710#(and (<= n1 n2) (<= 0 n3) (<= n3 n1)), 217#true, Black: 711#(and (<= n1 n2) (<= 0 n1) (<= n3 n2)), Black: 712#(and (<= n1 n2) (<= 0 n1)), Black: 713#(and (<= 0 n1) (<= (+ n1 1) n2)), Black: 714#(and (< n1 (+ n2 1)) (<= 1 n1)), Black: 716#(and (<= 0 n3) (<= n3 n1) (<= (+ n1 1) n2)), Black: 470#(and (<= n1 n2) (<= 0 n1) (<= n2 n1) (<= n3 n1)), Black: 471#(and (<= n1 n2) (<= 0 n1) (<= n3 n1)), Black: 718#(and (< n1 (+ n2 1)) (<= 1 n1) (<= 0 n3) (<= n2 n1) (<= n3 n1)), 736#true, Black: 472#(and (<= n1 n2) (<= 0 n1)), Black: 473#(and (<= 1 n1) (<= n1 (+ n2 1))), Black: 474#(and (<= n1 n2) (<= 1 n1)), Black: 476#(and (<= n1 n2) (<= 1 n1) (<= n3 n1)), 484#true, Black: 224#(and (< n2 (+ n1 1)) (<= 1 n2)), Black: 225#(and (<= n1 n2) (< n2 (+ n1 1)) (<= 1 n2)), Black: 229#(and (<= (+ n2 1) n1) (<= n2 n3) (<= n3 n1) (<= 0 n2)), Black: 222#(and (<= (+ n3 1) n1) (<= n2 n3) (<= 0 n2)), 242#(and (<= 0 n3) (<= 0 n2))]) [2021-03-24 15:07:24,612 INFO L384 tUnfolder$Statistics]: this new event has 28 ancestors and is not cut-off event [2021-03-24 15:07:24,612 INFO L387 tUnfolder$Statistics]: existing Event has 28 ancestors and is not cut-off event [2021-03-24 15:07:24,612 INFO L387 tUnfolder$Statistics]: existing Event has 28 ancestors and is not cut-off event [2021-03-24 15:07:24,612 INFO L387 tUnfolder$Statistics]: existing Event has 28 ancestors and is not cut-off event [2021-03-24 15:07:30,465 INFO L129 PetriNetUnfolder]: 7757/26981 cut-off events. [2021-03-24 15:07:30,465 INFO L130 PetriNetUnfolder]: For 969293/975516 co-relation queries the response was YES. [2021-03-24 15:07:31,437 INFO L84 FinitePrefix]: Finished finitePrefix Result has 236629 conditions, 26981 events. 7757/26981 cut-off events. For 969293/975516 co-relation queries the response was YES. Maximal size of possible extension queue 1576. Compared 374110 event pairs, 1388 based on Foata normal form. 1769/28021 useless extension candidates. Maximal degree in co-relation 235268. Up to 10750 conditions per place. [2021-03-24 15:07:31,543 INFO L132 encePairwiseOnDemand]: 40/57 looper letters, 1108 selfloop transitions, 700 changer transitions 40/1939 dead transitions. [2021-03-24 15:07:31,543 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 1939 transitions, 51024 flow [2021-03-24 15:07:31,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-03-24 15:07:31,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-03-24 15:07:31,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 947 transitions. [2021-03-24 15:07:31,544 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.75518341307815 [2021-03-24 15:07:31,544 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 947 transitions. [2021-03-24 15:07:31,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 947 transitions. [2021-03-24 15:07:31,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:07:31,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 947 transitions. [2021-03-24 15:07:31,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 43.04545454545455) internal successors, (947), 22 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:07:31,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 57.0) internal successors, (1311), 23 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:07:31,547 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 57.0) internal successors, (1311), 23 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:07:31,547 INFO L185 Difference]: Start difference. First operand has 407 places, 1386 transitions, 34744 flow. Second operand 22 states and 947 transitions. [2021-03-24 15:07:31,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 1939 transitions, 51024 flow [2021-03-24 15:07:42,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 1939 transitions, 50195 flow, removed 383 selfloop flow, removed 2 redundant places. [2021-03-24 15:07:42,765 INFO L241 Difference]: Finished difference. Result has 437 places, 1702 transitions, 44466 flow [2021-03-24 15:07:42,766 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=34211, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=415, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=836, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=44466, PETRI_PLACES=437, PETRI_TRANSITIONS=1702} [2021-03-24 15:07:42,766 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 383 predicate places. [2021-03-24 15:07:42,766 INFO L480 AbstractCegarLoop]: Abstraction has has 437 places, 1702 transitions, 44466 flow [2021-03-24 15:07:42,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 35.46153846153846) internal successors, (461), 13 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:07:42,766 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:07:42,766 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] [2021-03-24 15:07:42,766 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-03-24 15:07:42,766 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:07:42,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:07:42,767 INFO L82 PathProgramCache]: Analyzing trace with hash 21740767, now seen corresponding path program 26 times [2021-03-24 15:07:42,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:07:42,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740458961] [2021-03-24 15:07:42,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:07:42,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:07:42,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:07:42,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-24 15:07:42,806 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:07:42,806 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:07:42,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:07:42,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:07:42,829 INFO L142 QuantifierPusher]: treesize reduction 4, result has 81.0 percent of original size [2021-03-24 15:07:42,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:07:42,852 INFO L142 QuantifierPusher]: treesize reduction 35, result has 28.6 percent of original size [2021-03-24 15:07:42,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 15:07:42,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:07:42,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:07:42,876 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:07:42,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:07:42,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:07:42,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:07:42,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:07:42,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 15:07:42,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:07:42,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:07:42,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:07:42,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740458961] [2021-03-24 15:07:42,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:07:42,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-24 15:07:42,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818265206] [2021-03-24 15:07:42,907 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-24 15:07:42,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:07:42,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-24 15:07:42,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-03-24 15:07:42,908 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2021-03-24 15:07:42,908 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 1702 transitions, 44466 flow. Second operand has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:07:42,908 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:07:42,908 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2021-03-24 15:07:42,908 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:07:57,104 INFO L129 PetriNetUnfolder]: 7772/27393 cut-off events. [2021-03-24 15:07:57,104 INFO L130 PetriNetUnfolder]: For 1081502/1088527 co-relation queries the response was YES. [2021-03-24 15:07:57,974 INFO L84 FinitePrefix]: Finished finitePrefix Result has 248028 conditions, 27393 events. 7772/27393 cut-off events. For 1081502/1088527 co-relation queries the response was YES. Maximal size of possible extension queue 1572. Compared 380913 event pairs, 1235 based on Foata normal form. 3217/29962 useless extension candidates. Maximal degree in co-relation 247189. Up to 3789 conditions per place. [2021-03-24 15:07:58,075 INFO L132 encePairwiseOnDemand]: 39/57 looper letters, 755 selfloop transitions, 1078 changer transitions 164/2088 dead transitions. [2021-03-24 15:07:58,075 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 2088 transitions, 58042 flow [2021-03-24 15:07:58,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-24 15:07:58,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-03-24 15:07:58,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 680 transitions. [2021-03-24 15:07:58,076 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7953216374269005 [2021-03-24 15:07:58,076 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 680 transitions. [2021-03-24 15:07:58,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 680 transitions. [2021-03-24 15:07:58,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:07:58,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 680 transitions. [2021-03-24 15:07:58,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 45.333333333333336) internal successors, (680), 15 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:07:58,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 57.0) internal successors, (912), 16 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) [2021-03-24 15:07:58,078 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 57.0) internal successors, (912), 16 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) [2021-03-24 15:07:58,079 INFO L185 Difference]: Start difference. First operand has 437 places, 1702 transitions, 44466 flow. Second operand 15 states and 680 transitions. [2021-03-24 15:07:58,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 2088 transitions, 58042 flow [2021-03-24 15:08:10,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 2088 transitions, 57062 flow, removed 455 selfloop flow, removed 3 redundant places. [2021-03-24 15:08:10,979 INFO L241 Difference]: Finished difference. Result has 457 places, 1739 transitions, 48477 flow [2021-03-24 15:08:10,980 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=40020, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=843, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=624, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=48477, PETRI_PLACES=457, PETRI_TRANSITIONS=1739} [2021-03-24 15:08:10,980 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 403 predicate places. [2021-03-24 15:08:10,981 INFO L480 AbstractCegarLoop]: Abstraction has has 457 places, 1739 transitions, 48477 flow [2021-03-24 15:08:10,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:08:10,981 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:08:10,981 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] [2021-03-24 15:08:10,981 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-03-24 15:08:10,981 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:08:10,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:08:10,981 INFO L82 PathProgramCache]: Analyzing trace with hash 518045831, now seen corresponding path program 27 times [2021-03-24 15:08:10,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:08:10,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453882048] [2021-03-24 15:08:10,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:08:10,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:08:10,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:08:10,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:08:11,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:08:11,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:08:11,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:08:11,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:08:11,014 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:08:11,014 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:08:11,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:08:11,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:08:11,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:08:11,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:08:11,043 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-24 15:08:11,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:08:11,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:08:11,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453882048] [2021-03-24 15:08:11,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:08:11,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 15:08:11,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784170480] [2021-03-24 15:08:11,053 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 15:08:11,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:08:11,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 15:08:11,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-03-24 15:08:11,054 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 57 [2021-03-24 15:08:11,054 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 1739 transitions, 48477 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) [2021-03-24 15:08:11,054 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:08:11,054 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 57 [2021-03-24 15:08:11,054 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:08:24,964 INFO L129 PetriNetUnfolder]: 6414/24449 cut-off events. [2021-03-24 15:08:24,965 INFO L130 PetriNetUnfolder]: For 924048/929644 co-relation queries the response was YES. [2021-03-24 15:08:25,486 INFO L84 FinitePrefix]: Finished finitePrefix Result has 221932 conditions, 24449 events. 6414/24449 cut-off events. For 924048/929644 co-relation queries the response was YES. Maximal size of possible extension queue 1432. Compared 344166 event pairs, 1297 based on Foata normal form. 1777/25282 useless extension candidates. Maximal degree in co-relation 221095. Up to 3247 conditions per place. [2021-03-24 15:08:25,568 INFO L132 encePairwiseOnDemand]: 49/57 looper letters, 48 selfloop transitions, 37 changer transitions 278/1750 dead transitions. [2021-03-24 15:08:25,568 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 1750 transitions, 48712 flow [2021-03-24 15:08:25,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-24 15:08:25,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-24 15:08:25,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 556 transitions. [2021-03-24 15:08:25,569 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.886762360446571 [2021-03-24 15:08:25,569 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 556 transitions. [2021-03-24 15:08:25,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 556 transitions. [2021-03-24 15:08:25,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:08:25,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 556 transitions. [2021-03-24 15:08:25,570 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) [2021-03-24 15:08:25,570 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) [2021-03-24 15:08:25,570 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) [2021-03-24 15:08:25,570 INFO L185 Difference]: Start difference. First operand has 457 places, 1739 transitions, 48477 flow. Second operand 11 states and 556 transitions. [2021-03-24 15:08:25,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 1750 transitions, 48712 flow [2021-03-24 15:08:37,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 1750 transitions, 47558 flow, removed 523 selfloop flow, removed 7 redundant places. [2021-03-24 15:08:37,532 INFO L241 Difference]: Finished difference. Result has 461 places, 1463 transitions, 38889 flow [2021-03-24 15:08:37,533 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=47323, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1739, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1704, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=38889, PETRI_PLACES=461, PETRI_TRANSITIONS=1463} [2021-03-24 15:08:37,533 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 407 predicate places. [2021-03-24 15:08:37,533 INFO L480 AbstractCegarLoop]: Abstraction has has 461 places, 1463 transitions, 38889 flow [2021-03-24 15:08:37,533 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) [2021-03-24 15:08:37,533 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:08:37,533 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] [2021-03-24 15:08:37,533 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-03-24 15:08:37,533 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:08:37,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:08:37,534 INFO L82 PathProgramCache]: Analyzing trace with hash 408656567, now seen corresponding path program 28 times [2021-03-24 15:08:37,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:08:37,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873319709] [2021-03-24 15:08:37,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:08:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:08:37,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:08:37,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:08:37,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:08:37,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:08:37,597 INFO L142 QuantifierPusher]: treesize reduction 20, result has 51.2 percent of original size [2021-03-24 15:08:37,597 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:08:37,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:08:37,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:08:37,613 INFO L142 QuantifierPusher]: treesize reduction 26, result has 39.5 percent of original size [2021-03-24 15:08:37,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:08:37,625 INFO L142 QuantifierPusher]: treesize reduction 7, result has 70.8 percent of original size [2021-03-24 15:08:37,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:08:37,637 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-24 15:08:37,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:08:37,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:08:37,646 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:08:37,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:08:37,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:08:37,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:08:37,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873319709] [2021-03-24 15:08:37,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:08:37,655 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 15:08:37,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90730934] [2021-03-24 15:08:37,655 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 15:08:37,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:08:37,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 15:08:37,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-03-24 15:08:37,656 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2021-03-24 15:08:37,656 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 1463 transitions, 38889 flow. Second operand has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:08:37,656 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:08:37,656 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2021-03-24 15:08:37,656 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:08:43,124 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[][1047], [Black: 243#(and (<= 1 n3) (<= 0 n2)), Black: 486#(and (<= n1 n2) (<= n3 n2) (<= 0 n3)), Black: 244#(and (<= 1 n3) (<= 1 n2)), Black: 487#(and (<= n3 n2) (<= 0 n3)), Black: 245#(and (<= 1 n3) (<= (+ n3 1) n2)), Black: 490#(or (and (<= n3 (+ n1 1)) (<= 1 n1) (<= (+ n1 1) n3)) (and (<= n3 (+ n2 1)) (<= 0 n2) (<= (+ n2 1) n3))), Black: 247#(and (<= n1 n3) (<= 0 n3) (<= 0 n2)), Black: 491#(or (and (<= n3 (+ n1 1)) (<= 1 n1) (<= (+ n1 1) n3)) (and (< n2 (+ n3 1)) (<= n3 n2) (<= 1 n2))), Black: 249#(and (<= n1 n3) (<= 1 n3) (<= 0 n2)), Black: 492#(or (and (< n2 (+ n3 1)) (<= n3 n2) (<= 1 n2)) (and (< n1 (+ n3 1)) (<= n3 n1) (<= 2 n1))), Black: 251#(and (<= n1 n3) (<= 1 n3) (<= 1 n2)), Black: 253#(and (<= n1 n3) (<= 1 n3) (<= (+ n3 1) n2)), Black: 493#(and (< n2 (+ n3 1)) (<= n3 n2) (<= 1 n2)), Black: 495#(and (<= n1 n2) (or (= n3 n2) (and (= n3 n1) (<= 1 n1))) (<= 0 n3)), 7#L30true, Black: 499#(and (or (= n3 n2) (and (= n3 n1) (<= 1 n1))) (<= 0 n2)), Black: 501#(and (or (and (<= n3 (+ n1 1)) (<= 1 n1) (<= (+ n1 1) n3)) (and (< n2 (+ n3 1)) (<= 1 n2))) (<= n3 n2)), Black: 768#(and (or (<= 1 n3) (and (<= (+ n2 1) n1) (<= 0 n2))) (or (= n3 n1) (and (<= (+ n2 1) n1) (<= 0 n2)))), Black: 503#(and (or (and (< n2 (+ n3 1)) (<= 1 n2)) (and (< n1 (+ n3 1)) (<= n3 n1) (<= 2 n1))) (<= n3 n2)), Black: 505#(and (<= n1 n2) (or (and (<= n3 (+ n1 1)) (<= 1 n1) (<= (+ n1 1) n3)) (and (< n2 (+ n3 1)) (<= 1 n2))) (<= n3 n2)), Black: 772#(and (<= 1 n3) (<= (+ n3 1) n1)), Black: 741#(and (or (and (= n3 n1) (<= n2 n3)) (and (<= (+ n2 1) n1) (<= 0 n2))) (<= 0 n1)), Black: 509#(and (<= n1 n2) (< n2 (+ n3 1)) (<= n3 n2) (<= 1 n2)), Black: 743#(and (<= 0 n1) (or (and (<= (+ n2 1) n1) (<= 0 n2)) (<= (+ n1 1) n3))), Black: 776#(and (<= (+ n2 1) n1) (<= 0 n2)), Black: 744#(and (<= 0 n1) (or (<= 1 n3) (and (<= (+ n2 1) n1) (<= 0 n2)))), Black: 745#(and (<= 0 n1) (or (<= 1 n3) (and (<= n2 n1) (<= 1 n2)))), Black: 746#(and (<= 1 n1) (or (<= 1 n3) (and (<= (+ n2 1) n1) (<= 1 n2)))), Black: 756#(and (or (<= 1 n3) (<= 1 n2)) (<= 0 n1) (or (and (<= (+ n2 1) n1) (<= 0 n2)) (<= (+ n1 1) n3))), Black: 758#(and (or (<= 1 n3) (<= 1 n2)) (<= 0 n1) (or (<= 1 n3) (<= (+ n2 1) n1))), Black: 764#(and (<= 1 n3) (<= n2 n3) (<= n3 n1) (<= 0 n2)), Black: 766#(and (<= (+ n3 1) n1) (or (<= 1 n3) (and (<= (+ n2 1) n1) (<= 1 n2)))), 797#(and (<= 0 n1) (<= 0 n3) (<= 0 n2)), Black: 279#(and (<= i2 0) (<= 2 i) (<= i 2) (<= 1 i3) (<= i3 1) (<= 0 i2)), 32#L77true, 544#(and (< n1 (+ n2 1)) (<= 1 n1) (<= 0 n3) (<= n3 n1)), Black: 265#(and (<= i 0) (<= 0 i)), Black: 266#(and (<= i2 0) (<= 0 i2)), Black: 285#(and (<= i2 0) (<= 2 i1) (< 2 i) (<= i 3) (<= 1 i3) (<= i3 1) (<= 0 i2) (<= i1 2)), 48#L45true, Black: 546#(and (<= n3 n2) (<= 0 n3) (<= n3 n1) (<= 1 n2)), 50#thread3EXITtrue, Black: 548#(and (<= 1 n1) (<= n3 n2) (<= 0 n3) (<= n3 n1) (<= 1 n2)), Black: 556#(and (< n1 (+ n2 1)) (<= 1 n1) (or (and (<= 0 n3) (<= n3 n1)) (= n3 n2))), Black: 558#(and (<= 1 n1) (or (and (<= n3 n2) (<= 0 n3) (<= n3 n1)) (= n3 n2)) (<= 1 n2)), Black: 529#(and (<= n1 n2) (<= 0 n3) (<= n3 n1)), Black: 530#(and (<= n3 n2) (<= 0 n3) (<= n3 n1)), Black: 817#(and (<= n1 n2) (<= 1 n1) (<= n2 n3)), Black: 535#(and (<= 1 n1) (<= 1 n2)), Black: 536#(and (< n1 (+ n2 1)) (<= 1 n1)), Black: 819#(and (<= n1 n3) (<= 1 n3) (<= 0 n1) (<= 0 n2)), Black: 803#(and (<= n1 n2) (<= 0 n1) (<= n2 n3)), Black: 538#(and (<= 0 n1) (or (and (<= n3 n2) (<= 0 n3) (<= n3 n1)) (= n3 n2)) (<= 0 n2)), Black: 304#(and (<= i2 0) (<= 1 i) (<= 0 i2) (<= i 1)), Black: 540#(and (<= n1 n2) (<= 0 n3) (<= n3 n1) (<= 1 n2)), Black: 821#(and (<= n1 n3) (<= 1 n1) (<= 0 n2)), Black: 312#(and (<= i2 0) (<= i1 1) (<= 0 i2) (<= 1 i1)), Black: 542#(and (<= 0 n1) (<= 0 n2) (or (and (<= 0 n3) (<= n3 n1)) (= n3 n2))), Black: 805#(and (<= n1 n3) (<= 0 n1) (<= n2 n3) (<= 0 n2)), Black: 314#(and (<= i2 0) (<= i1 1) (< 2 i) (<= i 3) (<= i3 2) (<= 2 i3) (<= 0 i2) (<= 1 i1)), Black: 807#(and (<= n1 n2) (<= 1 n3) (<= 0 n1) (<= n2 n3)), 319#true, Black: 809#(and (<= n1 n3) (<= 1 n3) (<= 0 n1) (<= n2 n3) (<= 0 n2)), Black: 811#(and (<= n1 n3) (<= 1 n1) (<= n2 n3) (<= 0 n2)), Black: 796#(and (<= n1 n3) (<= 0 n1) (<= 0 n2)), 577#(and (<= n3 n2) (<= 0 n2)), Black: 815#(and (<= 1 n3) (<= 1 n1) (<= 0 n2)), Black: 576#(and (<= n1 n2) (<= n3 n2) (<= 0 n2)), 79#(and (<= i3 0) (<= 1 i) (<= i 1) (<= 0 i3)), 847#(and (<= i3 0) (<= 1 i) (<= i 1) (<= 0 i3)), Black: 578#(<= 0 n2), Black: 579#(and (<= n2 n3) (<= 0 n2)), Black: 322#(and (<= 0 n1) (<= n3 n1)), Black: 580#(and (<= 0 n2) (<= (+ n2 1) n3)), Black: 323#(and (<= (+ n3 1) n1) (<= 1 n1)), Black: 581#(and (< n2 (+ n3 1)) (<= 1 n2)), Black: 583#(and (<= n1 n2) (<= n3 n2) (<= n2 n3) (<= 0 n2)), Black: 587#(and (< n2 (+ n3 1)) (<= n3 n2) (<= 1 n2)), Black: 328#(and (<= 2 n3) (< n3 n1)), Black: 330#(and (<= (+ n3 1) n1) (<= 1 n1) (<= n2 n1)), Black: 83#(and (<= 1 i2) (<= i3 0) (<= 2 i) (<= i 2) (<= i2 1) (<= 0 i3)), Black: 857#(and (<= 2 i2) (<= i2 2) (<= i3 0) (<= i1 1) (< 2 i) (<= i 3) (<= 0 i3) (<= 1 i1)), 860#true, 95#true, 615#(and (<= 0 n1) (<= n3 n2) (<= 0 n3) (or (<= n1 n2) (= n3 n2))), 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)), 365#(and (<= 1 n1) (<= 0 n3) (<= n3 n1) (<= 0 n2)), Black: 112#e2, 115#true, Black: 352#(and (<= 0 n1) (<= 0 n3) (<= 0 n2)), Black: 369#(and (<= 1 n3) (<= n3 n1) (<= 0 n2)), Black: 353#(and (<= 1 n1) (<= 0 n3) (<= 0 n2)), Black: 371#(and (<= 1 n3) (<= 0 n2) (< n3 n1)), Black: 357#(and (<= 0 n3) (<= n2 n1) (<= n3 n1) (<= 0 n2)), Black: 117#(and (<= n1 n3) (<= n3 n2) (<= n2 n3) (<= 0 n2)), Black: 119#(and (< 0 n3) (<= 0 n2)), Black: 359#(and (<= 1 n1) (<= 0 n3) (<= n2 n1) (<= n3 n1) (<= 0 n2)), Black: 120#(and (< 0 n3) (<= 1 n2)), Black: 361#(and (<= 0 n3) (<= n3 n1) (<= 0 n2)), Black: 121#(and (< n2 (+ n3 1)) (<= 1 n2)), Black: 367#(and (<= 1 n3) (<= 1 n1) (<= 0 n2)), Black: 129#e3, 132#true, Black: 144#(and (<= 1 i) (<= i1 0) (<= 0 i1) (<= i 1)), Black: 148#(and (<= 2 i) (<= i 2) (<= 1 i3) (<= i3 1) (<= i1 0) (<= 0 i1)), Black: 134#(and (<= i 0) (<= 0 i)), Black: 135#(and (<= i1 0) (<= 0 i1)), Black: 641#(and (<= 1 n3) (<= 1 n1) (or (<= n1 n2) (= n3 n1)) (<= 0 n2)), Black: 643#(and (<= n1 n2) (<= 1 n1) (<= n3 n2) (or (<= 1 n3) (<= (+ n1 1) n2))), Black: 645#(and (<= 1 n3) (<= 1 n1) (<= n3 n2)), Black: 647#(and (<= 1 n1) (<= n3 n2) (or (<= 1 n3) (< n1 (+ n2 1)))), Black: 649#(and (<= 0 n1) (<= n3 n2) (or (<= 1 n3) (<= (+ n1 1) n2))), Black: 651#(and (<= 0 n1) (<= n3 n2) (or (<= n1 n2) (<= 1 n3))), Black: 653#(and (<= 1 n3) (<= 1 n1) (<= n3 n2) (or (<= n1 n2) (= n3 n2))), Black: 655#(and (<= 1 n1) (<= n3 n2) (or (<= 1 n3) (<= (+ n1 1) n2))), Black: 657#(and (<= 1 n1) (or (<= 1 n3) (<= (+ n1 1) n2))), 169#(and (<= 0 n3) (<= 1 n2)), Black: 659#(and (<= 1 n3) (<= 1 n1)), Black: 166#(and (<= n2 n3) (<= 1 n2)), Black: 661#(and (<= 1 n3) (<= (+ n3 1) n1) (<= n3 n2)), Black: 663#(and (<= 1 n3) (<= (+ n3 1) n1) (or (<= n1 n2) (= n3 n2))), Black: 665#(and (<= n1 n2) (<= 1 n1) (<= n3 n2) (<= 0 n3) (or (<= 1 n3) (<= (+ n1 1) n2))), Black: 667#(and (<= n1 n2) (<= 1 n3) (<= (+ n3 1) n1)), Black: 604#(and (<= 0 n1) (<= n3 n2) (<= 0 n2)), Black: 669#(and (<= 1 n1) (<= n3 n2) (<= 0 n3) (or (<= 1 n3) (< n1 (+ n2 1)))), Black: 605#(and (<= 0 n1) (or (<= n1 n2) (= n3 n1)) (<= 0 n2)), Black: 607#(and (<= 0 n1) (or (<= n1 n2) (<= 1 n3))), Black: 176#e1, Black: 671#(and (<= 0 n1) (<= n3 n2) (<= 0 n3) (or (<= n1 n2) (= n3 n2)) (or (<= 1 n3) (<= (+ n1 1) n2))), 179#true, Black: 608#(and (<= 0 n1) (or (<= 1 n3) (<= (+ n1 1) n2))), Black: 609#(and (<= 1 n1) (or (<= 1 n3) (< n1 (+ n2 1)))), Black: 611#(and (<= 1 n3) (<= (+ n3 1) n1)), Black: 617#(and (<= n1 n2) (<= 0 n1) (<= n3 n2) (<= 0 n3) (or (<= 1 n3) (<= (+ n1 1) n2))), Black: 619#(and (<= n1 n2) (<= 0 n1) (<= n3 n2) (<= 0 n3)), Black: 621#(and (<= 0 n1) (or (<= 1 n3) (<= (+ n1 1) n2)) (or (<= n1 n2) (= n3 n1)) (<= 0 n2)), Black: 183#(and (<= n2 (+ n3 1)) (<= 1 n2)), Black: 184#(and (<= n2 n3) (<= 1 n2)), Black: 623#(and (<= n1 n2) (<= 1 n1) (<= n3 n2) (<= 0 n3)), Black: 625#(and (<= n1 n2) (<= 1 n3) (<= 1 n1) (<= n3 n2)), Black: 627#(and (<= 0 n1) (<= n3 n2) (<= 0 n3)), Black: 631#(and (<= n1 n2) (<= 0 n1) (<= n3 n2) (or (<= 1 n3) (<= (+ n1 1) n2))), Black: 633#(and (<= n1 n2) (< n2 (+ n3 1)) (<= 1 n1) (<= n3 n2)), Black: 635#(and (<= n1 n2) (<= 1 n1) (<= n3 n2)), 448#(and (<= 1 n1) (<= 0 n3) (<= 1 n2)), Black: 637#(and (<= n1 n2) (<= 0 n1) (<= n3 n2)), Black: 639#(and (<= 1 n1) (or (<= n1 n2) (= n3 n1)) (<= 0 n2)), 707#true, Black: 450#(and (<= n1 n3) (<= (+ n2 1) n1) (<= 1 n2)), Black: 434#(and (<= n1 n3) (<= n1 n2) (<= 0 n1)), Black: 436#(and (<= n1 n3) (<= 0 n1) (<= 0 n2)), Black: 452#(and (<= (+ n2 1) n1) (<= 0 n3) (<= 1 n2)), Black: 454#(and (<= n1 n3) (<= n1 n2) (<= 1 n1)), Black: 438#(and (<= n1 n3) (<= n1 n2) (<= 0 n1) (<= 1 n2)), Black: 440#(and (or (<= n1 n3) (= n2 n1)) (<= 1 n1) (<= 0 n3) (<= 1 n2)), Black: 442#(and (<= 0 n1) (<= 0 n3) (<= 1 n2)), Black: 427#(and (or (<= n1 n3) (= n2 n1)) (<= 0 n1) (<= 0 n3) (<= 0 n2)), Black: 444#(and (<= n1 n3) (<= 0 n1) (<= 1 n2)), Black: 446#(and (<= n1 n3) (<= 1 n1) (<= 1 n2)), 468#true, Black: 200#(and (<= 1 i) (<= i1 0) (<= 0 i1) (<= i 1)), Black: 720#(and (<= 0 n1) (<= n3 n2) (<= (+ n1 1) n2)), Black: 722#(and (< n1 (+ n2 1)) (<= 1 n1) (<= n3 n2)), Black: 724#(and (< n1 (+ n2 1)) (<= 1 n1) (<= 0 n3) (<= n3 n1)), 217#true, Black: 710#(and (<= n1 n2) (<= 0 n3) (<= n3 n1)), Black: 711#(and (<= n1 n2) (<= 0 n1) (<= n3 n2)), Black: 712#(and (<= n1 n2) (<= 0 n1)), Black: 713#(and (<= 0 n1) (<= (+ n1 1) n2)), Black: 714#(and (< n1 (+ n2 1)) (<= 1 n1)), Black: 716#(and (<= 0 n3) (<= n3 n1) (<= (+ n1 1) n2)), Black: 470#(and (<= n1 n2) (<= 0 n1) (<= n2 n1) (<= n3 n1)), Black: 471#(and (<= n1 n2) (<= 0 n1) (<= n3 n1)), 736#true, Black: 472#(and (<= n1 n2) (<= 0 n1)), Black: 473#(and (<= 1 n1) (<= n1 (+ n2 1))), Black: 474#(and (<= n1 n2) (<= 1 n1)), Black: 476#(and (<= n1 n2) (<= 1 n1) (<= n3 n1)), 484#true, Black: 224#(and (< n2 (+ n1 1)) (<= 1 n2)), Black: 225#(and (<= n1 n2) (< n2 (+ n1 1)) (<= 1 n2)), Black: 229#(and (<= (+ n2 1) n1) (<= n2 n3) (<= n3 n1) (<= 0 n2)), Black: 222#(and (<= (+ n3 1) n1) (<= n2 n3) (<= 0 n2)), 242#(and (<= 0 n3) (<= 0 n2))]) [2021-03-24 15:08:43,125 INFO L384 tUnfolder$Statistics]: this new event has 28 ancestors and is not cut-off event [2021-03-24 15:08:43,125 INFO L387 tUnfolder$Statistics]: existing Event has 28 ancestors and is not cut-off event [2021-03-24 15:08:43,125 INFO L387 tUnfolder$Statistics]: existing Event has 28 ancestors and is not cut-off event [2021-03-24 15:08:43,125 INFO L387 tUnfolder$Statistics]: existing Event has 28 ancestors and is not cut-off event [2021-03-24 15:08:50,511 INFO L129 PetriNetUnfolder]: 7209/26145 cut-off events. [2021-03-24 15:08:50,511 INFO L130 PetriNetUnfolder]: For 1074404/1081358 co-relation queries the response was YES. [2021-03-24 15:08:51,557 INFO L84 FinitePrefix]: Finished finitePrefix Result has 246333 conditions, 26145 events. 7209/26145 cut-off events. For 1074404/1081358 co-relation queries the response was YES. Maximal size of possible extension queue 1611. Compared 365127 event pairs, 1559 based on Foata normal form. 1495/26977 useless extension candidates. Maximal degree in co-relation 245374. Up to 9554 conditions per place. [2021-03-24 15:08:51,677 INFO L132 encePairwiseOnDemand]: 42/57 looper letters, 1203 selfloop transitions, 349 changer transitions 71/1716 dead transitions. [2021-03-24 15:08:51,677 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 1716 transitions, 48523 flow [2021-03-24 15:08:51,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 15:08:51,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 15:08:51,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 411 transitions. [2021-03-24 15:08:51,678 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8011695906432749 [2021-03-24 15:08:51,678 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 411 transitions. [2021-03-24 15:08:51,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 411 transitions. [2021-03-24 15:08:51,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:08:51,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 411 transitions. [2021-03-24 15:08:51,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 45.666666666666664) internal successors, (411), 9 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:08:51,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 57.0) internal successors, (570), 10 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:08:51,693 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 57.0) internal successors, (570), 10 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:08:51,693 INFO L185 Difference]: Start difference. First operand has 461 places, 1463 transitions, 38889 flow. Second operand 9 states and 411 transitions. [2021-03-24 15:08:51,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 1716 transitions, 48523 flow [2021-03-24 15:09:05,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 1716 transitions, 47563 flow, removed 327 selfloop flow, removed 25 redundant places. [2021-03-24 15:09:05,373 INFO L241 Difference]: Finished difference. Result has 448 places, 1502 transitions, 40447 flow [2021-03-24 15:09:05,374 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=38024, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=281, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=40447, PETRI_PLACES=448, PETRI_TRANSITIONS=1502} [2021-03-24 15:09:05,374 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 394 predicate places. [2021-03-24 15:09:05,374 INFO L480 AbstractCegarLoop]: Abstraction has has 448 places, 1502 transitions, 40447 flow [2021-03-24 15:09:05,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:09:05,374 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:09:05,375 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] [2021-03-24 15:09:05,375 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-03-24 15:09:05,375 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:09:05,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:09:05,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1704668609, now seen corresponding path program 29 times [2021-03-24 15:09:05,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:09:05,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010713730] [2021-03-24 15:09:05,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:09:05,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:09:05,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:05,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:09:05,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:05,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:09:05,422 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:05,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:09:05,429 INFO L142 QuantifierPusher]: treesize reduction 12, result has 65.7 percent of original size [2021-03-24 15:09:05,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 15:09:05,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:05,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 15:09:05,468 INFO L142 QuantifierPusher]: treesize reduction 20, result has 33.3 percent of original size [2021-03-24 15:09:05,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:09:05,479 INFO L142 QuantifierPusher]: treesize reduction 11, result has 57.7 percent of original size [2021-03-24 15:09:05,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 15:09:05,485 INFO L142 QuantifierPusher]: treesize reduction 4, result has 84.6 percent of original size [2021-03-24 15:09:05,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-24 15:09:05,500 INFO L142 QuantifierPusher]: treesize reduction 4, result has 81.8 percent of original size [2021-03-24 15:09:05,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-24 15:09:05,516 INFO L142 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-03-24 15:09:05,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:09:05,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:05,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:09:05,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:09:05,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010713730] [2021-03-24 15:09:05,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:09:05,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-24 15:09:05,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835628547] [2021-03-24 15:09:05,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-24 15:09:05,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:09:05,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-24 15:09:05,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-03-24 15:09:05,530 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2021-03-24 15:09:05,530 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 1502 transitions, 40447 flow. Second operand has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:09:05,530 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:09:05,530 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2021-03-24 15:09:05,530 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:09:11,502 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[][315], [Black: 243#(and (<= 1 n3) (<= 0 n2)), Black: 486#(and (<= n1 n2) (<= n3 n2) (<= 0 n3)), Black: 244#(and (<= 1 n3) (<= 1 n2)), Black: 487#(and (<= n3 n2) (<= 0 n3)), Black: 245#(and (<= 1 n3) (<= (+ n3 1) n2)), Black: 490#(or (and (<= n3 (+ n1 1)) (<= 1 n1) (<= (+ n1 1) n3)) (and (<= n3 (+ n2 1)) (<= 0 n2) (<= (+ n2 1) n3))), Black: 247#(and (<= n1 n3) (<= 0 n3) (<= 0 n2)), Black: 491#(or (and (<= n3 (+ n1 1)) (<= 1 n1) (<= (+ n1 1) n3)) (and (< n2 (+ n3 1)) (<= n3 n2) (<= 1 n2))), Black: 249#(and (<= n1 n3) (<= 1 n3) (<= 0 n2)), Black: 492#(or (and (< n2 (+ n3 1)) (<= n3 n2) (<= 1 n2)) (and (< n1 (+ n3 1)) (<= n3 n1) (<= 2 n1))), Black: 251#(and (<= n1 n3) (<= 1 n3) (<= 1 n2)), Black: 253#(and (<= n1 n3) (<= 1 n3) (<= (+ n3 1) n2)), Black: 493#(and (< n2 (+ n3 1)) (<= n3 n2) (<= 1 n2)), Black: 495#(and (<= n1 n2) (or (= n3 n2) (and (= n3 n1) (<= 1 n1))) (<= 0 n3)), 7#L30true, Black: 499#(and (or (= n3 n2) (and (= n3 n1) (<= 1 n1))) (<= 0 n2)), Black: 501#(and (or (and (<= n3 (+ n1 1)) (<= 1 n1) (<= (+ n1 1) n3)) (and (< n2 (+ n3 1)) (<= 1 n2))) (<= n3 n2)), Black: 768#(and (or (<= 1 n3) (and (<= (+ n2 1) n1) (<= 0 n2))) (or (= n3 n1) (and (<= (+ n2 1) n1) (<= 0 n2)))), Black: 505#(and (<= n1 n2) (or (and (<= n3 (+ n1 1)) (<= 1 n1) (<= (+ n1 1) n3)) (and (< n2 (+ n3 1)) (<= 1 n2))) (<= n3 n2)), Black: 741#(and (or (and (= n3 n1) (<= n2 n3)) (and (<= (+ n2 1) n1) (<= 0 n2))) (<= 0 n1)), Black: 743#(and (<= 0 n1) (or (and (<= (+ n2 1) n1) (<= 0 n2)) (<= (+ n1 1) n3))), Black: 776#(and (<= (+ n2 1) n1) (<= 0 n2)), Black: 744#(and (<= 0 n1) (or (<= 1 n3) (and (<= (+ n2 1) n1) (<= 0 n2)))), Black: 745#(and (<= 0 n1) (or (<= 1 n3) (and (<= n2 n1) (<= 1 n2)))), Black: 746#(and (<= 1 n1) (or (<= 1 n3) (and (<= (+ n2 1) n1) (<= 1 n2)))), Black: 756#(and (or (<= 1 n3) (<= 1 n2)) (<= 0 n1) (or (and (<= (+ n2 1) n1) (<= 0 n2)) (<= (+ n1 1) n3))), Black: 758#(and (or (<= 1 n3) (<= 1 n2)) (<= 0 n1) (or (<= 1 n3) (<= (+ n2 1) n1))), Black: 766#(and (<= (+ n3 1) n1) (or (<= 1 n3) (and (<= (+ n2 1) n1) (<= 1 n2)))), 797#(and (<= 0 n1) (<= 0 n3) (<= 0 n2)), 32#L77true, 544#(and (< n1 (+ n2 1)) (<= 1 n1) (<= 0 n3) (<= n3 n1)), Black: 285#(and (<= i2 0) (<= 2 i1) (< 2 i) (<= i 3) (<= 1 i3) (<= i3 1) (<= 0 i2) (<= i1 2)), 48#L45true, Black: 546#(and (<= n3 n2) (<= 0 n3) (<= n3 n1) (<= 1 n2)), 50#thread3EXITtrue, Black: 548#(and (<= 1 n1) (<= n3 n2) (<= 0 n3) (<= n3 n1) (<= 1 n2)), Black: 556#(and (< n1 (+ n2 1)) (<= 1 n1) (or (and (<= 0 n3) (<= n3 n1)) (= n3 n2))), Black: 558#(and (<= 1 n1) (or (and (<= n3 n2) (<= 0 n3) (<= n3 n1)) (= n3 n2)) (<= 1 n2)), Black: 529#(and (<= n1 n2) (<= 0 n3) (<= n3 n1)), Black: 530#(and (<= n3 n2) (<= 0 n3) (<= n3 n1)), Black: 535#(and (<= 1 n1) (<= 1 n2)), Black: 817#(and (<= n1 n2) (<= 1 n1) (<= n2 n3)), Black: 536#(and (< n1 (+ n2 1)) (<= 1 n1)), Black: 819#(and (<= n1 n3) (<= 1 n3) (<= 0 n1) (<= 0 n2)), Black: 803#(and (<= n1 n2) (<= 0 n1) (<= n2 n3)), Black: 538#(and (<= 0 n1) (or (and (<= n3 n2) (<= 0 n3) (<= n3 n1)) (= n3 n2)) (<= 0 n2)), Black: 540#(and (<= n1 n2) (<= 0 n3) (<= n3 n1) (<= 1 n2)), Black: 821#(and (<= n1 n3) (<= 1 n1) (<= 0 n2)), Black: 542#(and (<= 0 n1) (<= 0 n2) (or (and (<= 0 n3) (<= n3 n1)) (= n3 n2))), Black: 805#(and (<= n1 n3) (<= 0 n1) (<= n2 n3) (<= 0 n2)), Black: 314#(and (<= i2 0) (<= i1 1) (< 2 i) (<= i 3) (<= i3 2) (<= 2 i3) (<= 0 i2) (<= 1 i1)), Black: 807#(and (<= n1 n2) (<= 1 n3) (<= 0 n1) (<= n2 n3)), 319#true, Black: 809#(and (<= n1 n3) (<= 1 n3) (<= 0 n1) (<= n2 n3) (<= 0 n2)), Black: 811#(and (<= n1 n3) (<= 1 n1) (<= n2 n3) (<= 0 n2)), Black: 796#(and (<= n1 n3) (<= 0 n1) (<= 0 n2)), 577#(and (<= n3 n2) (<= 0 n2)), Black: 815#(and (<= 1 n3) (<= 1 n1) (<= 0 n2)), Black: 576#(and (<= n1 n2) (<= n3 n2) (<= 0 n2)), 79#(and (<= i3 0) (<= 1 i) (<= i 1) (<= 0 i3)), 847#(and (<= i3 0) (<= 1 i) (<= i 1) (<= 0 i3)), Black: 578#(<= 0 n2), Black: 579#(and (<= n2 n3) (<= 0 n2)), Black: 322#(and (<= 0 n1) (<= n3 n1)), Black: 580#(and (<= 0 n2) (<= (+ n2 1) n3)), Black: 323#(and (<= (+ n3 1) n1) (<= 1 n1)), Black: 581#(and (< n2 (+ n3 1)) (<= 1 n2)), Black: 583#(and (<= n1 n2) (<= n3 n2) (<= n2 n3) (<= 0 n2)), Black: 587#(and (< n2 (+ n3 1)) (<= n3 n2) (<= 1 n2)), Black: 328#(and (<= 2 n3) (< n3 n1)), Black: 330#(and (<= (+ n3 1) n1) (<= 1 n1) (<= n2 n1)), Black: 857#(and (<= 2 i2) (<= i2 2) (<= i3 0) (<= i1 1) (< 2 i) (<= i 3) (<= 0 i3) (<= 1 i1)), 860#true, 95#true, 615#(and (<= 0 n1) (<= n3 n2) (<= 0 n3) (or (<= n1 n2) (= n3 n2))), Black: 865#(and (<= 0 n2) (or (and (= n3 n1) (<= 1 (+ n3 n1))) (<= n2 n3))), Black: 866#(and (<= 0 n3) (<= 1 n2)), Black: 867#(and (<= 1 n3) (<= 1 n2)), Black: 98#(and (<= (+ n3 1) n1) (<= 1 n1) (<= (+ n2 1) n1)), Black: 99#(and (<= (+ n3 1) n1) (<= 1 n1) (= n2 n1)), Black: 868#(and (<= n2 n3) (<= 1 n2)), Black: 101#(and (<= 1 n1) (<= (+ n1 1) n2)), Black: 870#(and (or (= n3 n1) (= n3 n2)) (or (<= 1 (+ n3 n1)) (<= n2 n3)) (<= 0 n2)), Black: 103#(and (<= n1 n2) (<= 1 n1) (<= n2 n1) (<= n3 n1)), 365#(and (<= 1 n1) (<= 0 n3) (<= n3 n1) (<= 0 n2)), Black: 112#e2, 115#true, Black: 352#(and (<= 0 n1) (<= 0 n3) (<= 0 n2)), Black: 369#(and (<= 1 n3) (<= n3 n1) (<= 0 n2)), Black: 353#(and (<= 1 n1) (<= 0 n3) (<= 0 n2)), Black: 371#(and (<= 1 n3) (<= 0 n2) (< n3 n1)), Black: 357#(and (<= 0 n3) (<= n2 n1) (<= n3 n1) (<= 0 n2)), Black: 117#(and (<= n1 n3) (<= n3 n2) (<= n2 n3) (<= 0 n2)), Black: 119#(and (< 0 n3) (<= 0 n2)), Black: 120#(and (< 0 n3) (<= 1 n2)), Black: 359#(and (<= 1 n1) (<= 0 n3) (<= n2 n1) (<= n3 n1) (<= 0 n2)), Black: 361#(and (<= 0 n3) (<= n3 n1) (<= 0 n2)), Black: 121#(and (< n2 (+ n3 1)) (<= 1 n2)), 895#(and (<= n1 n2) (<= (+ n3 1) n1) (<= 0 n3)), Black: 367#(and (<= 1 n3) (<= 1 n1) (<= 0 n2)), Black: 129#e3, 132#true, Black: 641#(and (<= 1 n3) (<= 1 n1) (or (<= n1 n2) (= n3 n1)) (<= 0 n2)), Black: 643#(and (<= n1 n2) (<= 1 n1) (<= n3 n2) (or (<= 1 n3) (<= (+ n1 1) n2))), Black: 645#(and (<= 1 n3) (<= 1 n1) (<= n3 n2)), Black: 647#(and (<= 1 n1) (<= n3 n2) (or (<= 1 n3) (< n1 (+ n2 1)))), Black: 649#(and (<= 0 n1) (<= n3 n2) (or (<= 1 n3) (<= (+ n1 1) n2))), Black: 651#(and (<= 0 n1) (<= n3 n2) (or (<= n1 n2) (<= 1 n3))), Black: 653#(and (<= 1 n3) (<= 1 n1) (<= n3 n2) (or (<= n1 n2) (= n3 n2))), Black: 655#(and (<= 1 n1) (<= n3 n2) (or (<= 1 n3) (<= (+ n1 1) n2))), Black: 657#(and (<= 1 n1) (or (<= 1 n3) (<= (+ n1 1) n2))), 169#(and (<= 0 n3) (<= 1 n2)), Black: 659#(and (<= 1 n3) (<= 1 n1)), Black: 166#(and (<= n2 n3) (<= 1 n2)), Black: 661#(and (<= 1 n3) (<= (+ n3 1) n1) (<= n3 n2)), Black: 663#(and (<= 1 n3) (<= (+ n3 1) n1) (or (<= n1 n2) (= n3 n2))), Black: 665#(and (<= n1 n2) (<= 1 n1) (<= n3 n2) (<= 0 n3) (or (<= 1 n3) (<= (+ n1 1) n2))), Black: 667#(and (<= n1 n2) (<= 1 n3) (<= (+ n3 1) n1)), Black: 604#(and (<= 0 n1) (<= n3 n2) (<= 0 n2)), Black: 669#(and (<= 1 n1) (<= n3 n2) (<= 0 n3) (or (<= 1 n3) (< n1 (+ n2 1)))), Black: 605#(and (<= 0 n1) (or (<= n1 n2) (= n3 n1)) (<= 0 n2)), Black: 607#(and (<= 0 n1) (or (<= n1 n2) (<= 1 n3))), Black: 176#e1, Black: 671#(and (<= 0 n1) (<= n3 n2) (<= 0 n3) (or (<= n1 n2) (= n3 n2)) (or (<= 1 n3) (<= (+ n1 1) n2))), 179#true, Black: 608#(and (<= 0 n1) (or (<= 1 n3) (<= (+ n1 1) n2))), Black: 609#(and (<= 1 n1) (or (<= 1 n3) (< n1 (+ n2 1)))), Black: 611#(and (<= 1 n3) (<= (+ n3 1) n1)), Black: 617#(and (<= n1 n2) (<= 0 n1) (<= n3 n2) (<= 0 n3) (or (<= 1 n3) (<= (+ n1 1) n2))), Black: 619#(and (<= n1 n2) (<= 0 n1) (<= n3 n2) (<= 0 n3)), Black: 621#(and (<= 0 n1) (or (<= 1 n3) (<= (+ n1 1) n2)) (or (<= n1 n2) (= n3 n1)) (<= 0 n2)), Black: 183#(and (<= n2 (+ n3 1)) (<= 1 n2)), Black: 184#(and (<= n2 n3) (<= 1 n2)), Black: 623#(and (<= n1 n2) (<= 1 n1) (<= n3 n2) (<= 0 n3)), Black: 625#(and (<= n1 n2) (<= 1 n3) (<= 1 n1) (<= n3 n2)), Black: 627#(and (<= 0 n1) (<= n3 n2) (<= 0 n3)), Black: 631#(and (<= n1 n2) (<= 0 n1) (<= n3 n2) (or (<= 1 n3) (<= (+ n1 1) n2))), Black: 633#(and (<= n1 n2) (< n2 (+ n3 1)) (<= 1 n1) (<= n3 n2)), 448#(and (<= 1 n1) (<= 0 n3) (<= 1 n2)), Black: 635#(and (<= n1 n2) (<= 1 n1) (<= n3 n2)), Black: 637#(and (<= n1 n2) (<= 0 n1) (<= n3 n2)), Black: 639#(and (<= 1 n1) (or (<= n1 n2) (= n3 n1)) (<= 0 n2)), 707#true, Black: 450#(and (<= n1 n3) (<= (+ n2 1) n1) (<= 1 n2)), Black: 434#(and (<= n1 n3) (<= n1 n2) (<= 0 n1)), Black: 436#(and (<= n1 n3) (<= 0 n1) (<= 0 n2)), Black: 452#(and (<= (+ n2 1) n1) (<= 0 n3) (<= 1 n2)), Black: 454#(and (<= n1 n3) (<= n1 n2) (<= 1 n1)), Black: 438#(and (<= n1 n3) (<= n1 n2) (<= 0 n1) (<= 1 n2)), Black: 440#(and (or (<= n1 n3) (= n2 n1)) (<= 1 n1) (<= 0 n3) (<= 1 n2)), Black: 442#(and (<= 0 n1) (<= 0 n3) (<= 1 n2)), Black: 427#(and (or (<= n1 n3) (= n2 n1)) (<= 0 n1) (<= 0 n3) (<= 0 n2)), Black: 444#(and (<= n1 n3) (<= 0 n1) (<= 1 n2)), Black: 446#(and (<= n1 n3) (<= 1 n1) (<= 1 n2)), 468#true, Black: 720#(and (<= 0 n1) (<= n3 n2) (<= (+ n1 1) n2)), Black: 722#(and (< n1 (+ n2 1)) (<= 1 n1) (<= n3 n2)), Black: 724#(and (< n1 (+ n2 1)) (<= 1 n1) (<= 0 n3) (<= n3 n1)), 217#true, Black: 710#(and (<= n1 n2) (<= 0 n3) (<= n3 n1)), Black: 711#(and (<= n1 n2) (<= 0 n1) (<= n3 n2)), Black: 712#(and (<= n1 n2) (<= 0 n1)), Black: 713#(and (<= 0 n1) (<= (+ n1 1) n2)), Black: 714#(and (< n1 (+ n2 1)) (<= 1 n1)), Black: 716#(and (<= 0 n3) (<= n3 n1) (<= (+ n1 1) n2)), Black: 470#(and (<= n1 n2) (<= 0 n1) (<= n2 n1) (<= n3 n1)), Black: 471#(and (<= n1 n2) (<= 0 n1) (<= n3 n1)), 736#true, Black: 472#(and (<= n1 n2) (<= 0 n1)), Black: 473#(and (<= 1 n1) (<= n1 (+ n2 1))), Black: 474#(and (<= n1 n2) (<= 1 n1)), Black: 476#(and (<= n1 n2) (<= 1 n1) (<= n3 n1)), 484#true, Black: 224#(and (< n2 (+ n1 1)) (<= 1 n2)), Black: 225#(and (<= n1 n2) (< n2 (+ n1 1)) (<= 1 n2)), Black: 229#(and (<= (+ n2 1) n1) (<= n2 n3) (<= n3 n1) (<= 0 n2)), 242#(and (<= 0 n3) (<= 0 n2))]) [2021-03-24 15:09:11,502 INFO L384 tUnfolder$Statistics]: this new event has 28 ancestors and is not cut-off event [2021-03-24 15:09:11,502 INFO L387 tUnfolder$Statistics]: existing Event has 28 ancestors and is not cut-off event [2021-03-24 15:09:11,503 INFO L387 tUnfolder$Statistics]: existing Event has 28 ancestors and is not cut-off event [2021-03-24 15:09:11,503 INFO L387 tUnfolder$Statistics]: existing Event has 28 ancestors and is not cut-off event [2021-03-24 15:09:17,438 INFO L129 PetriNetUnfolder]: 6458/24658 cut-off events. [2021-03-24 15:09:17,438 INFO L130 PetriNetUnfolder]: For 1008707/1014309 co-relation queries the response was YES. [2021-03-24 15:09:17,869 INFO L84 FinitePrefix]: Finished finitePrefix Result has 225087 conditions, 24658 events. 6458/24658 cut-off events. For 1008707/1014309 co-relation queries the response was YES. Maximal size of possible extension queue 1483. Compared 347580 event pairs, 1048 based on Foata normal form. 3373/27480 useless extension candidates. Maximal degree in co-relation 224914. Up to 2781 conditions per place. [2021-03-24 15:09:17,947 INFO L132 encePairwiseOnDemand]: 38/57 looper letters, 636 selfloop transitions, 1026 changer transitions 167/1922 dead transitions. [2021-03-24 15:09:17,947 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 1922 transitions, 54303 flow [2021-03-24 15:09:17,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-24 15:09:17,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-03-24 15:09:17,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1462 transitions. [2021-03-24 15:09:17,949 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7543859649122807 [2021-03-24 15:09:17,949 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1462 transitions. [2021-03-24 15:09:17,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1462 transitions. [2021-03-24 15:09:17,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:09:17,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1462 transitions. [2021-03-24 15:09:17,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 43.0) internal successors, (1462), 34 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:09:17,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 57.0) internal successors, (1995), 35 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:09:17,953 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 57.0) internal successors, (1995), 35 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:09:17,953 INFO L185 Difference]: Start difference. First operand has 448 places, 1502 transitions, 40447 flow. Second operand 34 states and 1462 transitions. [2021-03-24 15:09:17,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 1922 transitions, 54303 flow [2021-03-24 15:09:28,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 1922 transitions, 53822 flow, removed 164 selfloop flow, removed 3 redundant places. [2021-03-24 15:09:28,884 INFO L241 Difference]: Finished difference. Result has 501 places, 1560 transitions, 45459 flow [2021-03-24 15:09:28,886 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=38533, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=841, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=45459, PETRI_PLACES=501, PETRI_TRANSITIONS=1560} [2021-03-24 15:09:28,886 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 447 predicate places. [2021-03-24 15:09:28,886 INFO L480 AbstractCegarLoop]: Abstraction has has 501 places, 1560 transitions, 45459 flow [2021-03-24 15:09:28,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:09:28,886 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:09:28,886 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] [2021-03-24 15:09:28,886 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-03-24 15:09:28,886 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:09:28,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:09:28,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1146277251, now seen corresponding path program 30 times [2021-03-24 15:09:28,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:09:28,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638848856] [2021-03-24 15:09:28,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:09:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:09:28,901 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:28,902 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:09:28,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:28,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:09:28,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:28,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:09:28,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:28,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 15:09:28,923 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-03-24 15:09:28,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:09:28,931 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:28,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 15:09:28,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:28,940 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:09:28,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:09:28,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638848856] [2021-03-24 15:09:28,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:09:28,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 15:09:28,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062443902] [2021-03-24 15:09:28,941 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 15:09:28,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:09:28,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 15:09:28,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-24 15:09:28,942 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2021-03-24 15:09:28,942 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 1560 transitions, 45459 flow. Second operand has 8 states, 8 states have (on average 36.375) internal successors, (291), 8 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) [2021-03-24 15:09:28,942 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:09:28,942 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2021-03-24 15:09:28,943 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:09:34,094 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[][1084], [Black: 486#(and (<= n1 n2) (<= n3 n2) (<= 0 n3)), Black: 487#(and (<= n3 n2) (<= 0 n3)), Black: 490#(or (and (<= n3 (+ n1 1)) (<= 1 n1) (<= (+ n1 1) n3)) (and (<= n3 (+ n2 1)) (<= 0 n2) (<= (+ n2 1) n3))), Black: 491#(or (and (<= n3 (+ n1 1)) (<= 1 n1) (<= (+ n1 1) n3)) (and (< n2 (+ n3 1)) (<= n3 n2) (<= 1 n2))), Black: 492#(or (and (< n2 (+ n3 1)) (<= n3 n2) (<= 1 n2)) (and (< n1 (+ n3 1)) (<= n3 n1) (<= 2 n1))), Black: 493#(and (< n2 (+ n3 1)) (<= n3 n2) (<= 1 n2)), Black: 495#(and (<= n1 n2) (or (= n3 n2) (and (= n3 n1) (<= 1 n1))) (<= 0 n3)), Black: 499#(and (or (= n3 n2) (and (= n3 n1) (<= 1 n1))) (<= 0 n2)), Black: 501#(and (or (and (<= n3 (+ n1 1)) (<= 1 n1) (<= (+ n1 1) n3)) (and (< n2 (+ n3 1)) (<= 1 n2))) (<= n3 n2)), Black: 505#(and (<= n1 n2) (or (and (<= n3 (+ n1 1)) (<= 1 n1) (<= (+ n1 1) n3)) (and (< n2 (+ n3 1)) (<= 1 n2))) (<= n3 n2)), 18#L47true, 32#L77true, 546#(and (<= n3 n2) (<= 0 n3) (<= n3 n1) (<= 1 n2)), 37#L28true, Black: 544#(and (< n1 (+ n2 1)) (<= 1 n1) (<= 0 n3) (<= n3 n1)), Black: 548#(and (<= 1 n1) (<= n3 n2) (<= 0 n3) (<= n3 n1) (<= 1 n2)), 50#thread3EXITtrue, Black: 556#(and (< n1 (+ n2 1)) (<= 1 n1) (or (and (<= 0 n3) (<= n3 n1)) (= n3 n2))), Black: 558#(and (<= 1 n1) (or (and (<= n3 n2) (<= 0 n3) (<= n3 n1)) (= n3 n2)) (<= 1 n2)), Black: 529#(and (<= n1 n2) (<= 0 n3) (<= n3 n1)), Black: 530#(and (<= n3 n2) (<= 0 n3) (<= n3 n1)), Black: 535#(and (<= 1 n1) (<= 1 n2)), Black: 536#(and (< n1 (+ n2 1)) (<= 1 n1)), Black: 538#(and (<= 0 n1) (or (and (<= n3 n2) (<= 0 n3) (<= n3 n1)) (= n3 n2)) (<= 0 n2)), Black: 540#(and (<= n1 n2) (<= 0 n3) (<= n3 n1) (<= 1 n2)), Black: 542#(and (<= 0 n1) (<= 0 n2) (or (and (<= 0 n3) (<= n3 n1)) (= n3 n2))), 577#(and (<= n3 n2) (<= 0 n2)), Black: 576#(and (<= n1 n2) (<= n3 n2) (<= 0 n2)), 79#(and (<= i3 0) (<= 1 i) (<= i 1) (<= 0 i3)), Black: 578#(<= 0 n2), Black: 579#(and (<= n2 n3) (<= 0 n2)), Black: 580#(and (<= 0 n2) (<= (+ n2 1) n3)), Black: 581#(and (< n2 (+ n3 1)) (<= 1 n2)), Black: 583#(and (<= n1 n2) (<= n3 n2) (<= n2 n3) (<= 0 n2)), Black: 587#(and (< n2 (+ n3 1)) (<= n3 n2) (<= 1 n2)), 95#true, 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: 112#e2, 627#(and (<= 0 n1) (<= n3 n2) (<= 0 n3)), 115#true, Black: 117#(and (<= n1 n3) (<= n3 n2) (<= n2 n3) (<= 0 n2)), Black: 119#(and (< 0 n3) (<= 0 n2)), Black: 120#(and (< 0 n3) (<= 1 n2)), Black: 121#(and (< n2 (+ n3 1)) (<= 1 n2)), Black: 129#e3, 132#true, Black: 641#(and (<= 1 n3) (<= 1 n1) (or (<= n1 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(<= n1 (+ n2 1))), Black: 474#(and (<= n1 n2) (<= 1 n1)), Black: 476#(and (<= n1 n2) (<= 1 n1) (<= n3 n1)), 484#true]) [2021-03-24 15:09:34,095 INFO L384 tUnfolder$Statistics]: this new event has 28 ancestors and is cut-off event [2021-03-24 15:09:34,095 INFO L387 tUnfolder$Statistics]: existing Event has 28 ancestors and is cut-off event [2021-03-24 15:09:34,095 INFO L387 tUnfolder$Statistics]: existing Event has 28 ancestors and is cut-off event [2021-03-24 15:09:34,095 INFO L387 tUnfolder$Statistics]: existing Event has 28 ancestors and is cut-off event [2021-03-24 15:09:34,558 INFO L382 tUnfolder$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[][296], [Black: 486#(and (<= n1 n2) (<= n3 n2) (<= 0 n3)), Black: 487#(and (<= n3 n2) (<= 0 n3)), Black: 490#(or (and (<= n3 (+ n1 1)) (<= 1 n1) (<= (+ n1 1) n3)) (and 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0 n2)) (<= (+ n1 1) n3))), Black: 776#(and (<= (+ n2 1) n1) (<= 0 n2)), Black: 744#(and (<= 0 n1) (or (<= 1 n3) (and (<= (+ n2 1) n1) (<= 0 n2)))), Black: 745#(and (<= 0 n1) (or (<= 1 n3) (and (<= n2 n1) (<= 1 n2)))), Black: 746#(and (<= 1 n1) (or (<= 1 n3) (and (<= (+ n2 1) n1) (<= 1 n2)))), Black: 756#(and (or (<= 1 n3) (<= 1 n2)) (<= 0 n1) (or (and (<= (+ n2 1) n1) (<= 0 n2)) (<= (+ n1 1) n3))), Black: 758#(and (or (<= 1 n3) (<= 1 n2)) (<= 0 n1) (or (<= 1 n3) (<= (+ n2 1) n1))), Black: 766#(and (<= (+ n3 1) n1) (or (<= 1 n3) (and (<= (+ n2 1) n1) (<= 1 n2)))), 797#(and (<= 0 n1) (<= 0 n3) (<= 0 n2)), Black: 285#(and (<= i2 0) (<= 2 i1) (< 2 i) (<= i 3) (<= 1 i3) (<= i3 1) (<= 0 i2) (<= i1 2)), Black: 817#(and (<= n1 n2) (<= 1 n1) (<= n2 n3)), Black: 819#(and (<= n1 n3) (<= 1 n3) (<= 0 n1) (<= 0 n2)), Black: 803#(and (<= n1 n2) (<= 0 n1) (<= n2 n3)), Black: 821#(and (<= n1 n3) (<= 1 n1) (<= 0 n2)), Black: 805#(and (<= n1 n3) (<= 0 n1) (<= n2 n3) (<= 0 n2)), Black: 807#(and (<= n1 n2) (<= 1 n3) (<= 0 n1) (<= n2 n3)), Black: 314#(and (<= i2 0) (<= i1 1) (< 2 i) (<= i 3) (<= i3 2) (<= 2 i3) (<= 0 i2) (<= 1 i1)), Black: 809#(and (<= n1 n3) (<= 1 n3) (<= 0 n1) (<= n2 n3) (<= 0 n2)), 319#true, Black: 811#(and (<= n1 n3) (<= 1 n1) (<= n2 n3) (<= 0 n2)), Black: 796#(and (<= n1 n3) (<= 0 n1) (<= 0 n2)), Black: 815#(and (<= 1 n3) (<= 1 n1) (<= 0 n2)), 847#(and (<= i3 0) (<= 1 i) (<= i 1) (<= 0 i3)), Black: 322#(and (<= 0 n1) (<= n3 n1)), Black: 323#(and (<= (+ n3 1) n1) (<= 1 n1)), Black: 328#(and (<= 2 n3) (< n3 n1)), Black: 330#(and (<= (+ n3 1) n1) (<= 1 n1) (<= n2 n1)), Black: 857#(and (<= 2 i2) (<= i2 2) (<= i3 0) (<= i1 1) (< 2 i) (<= i 3) (<= 0 i3) (<= 1 i1)), Black: 865#(and (<= 0 n2) (or (and (= n3 n1) (<= 1 (+ n3 n1))) (<= n2 n3))), Black: 866#(and (<= 0 n3) (<= 1 n2)), Black: 867#(and (<= 1 n3) (<= 1 n2)), Black: 868#(and (<= n2 n3) (<= 1 n2)), Black: 870#(and (or (= n3 n1) (= n3 n2)) (or (<= 1 (+ n3 n1)) (<= n2 n3)) (<= 0 n2)), 365#(and (<= 1 n1) (<= 0 n3) (<= n3 n1) (<= 0 n2)), Black: 352#(and (<= 0 n1) (<= 0 n3) (<= 0 n2)), Black: 369#(and (<= 1 n3) (<= n3 n1) (<= 0 n2)), Black: 353#(and (<= 1 n1) (<= 0 n3) (<= 0 n2)), Black: 371#(and (<= 1 n3) (<= 0 n2) (< n3 n1)), Black: 357#(and (<= 0 n3) (<= n2 n1) (<= n3 n1) (<= 0 n2)), Black: 359#(and (<= 1 n1) (<= 0 n3) (<= n2 n1) (<= n3 n1) (<= 0 n2)), Black: 361#(and (<= 0 n3) (<= n3 n1) (<= 0 n2)), 895#(and (<= n1 n2) (<= (+ n3 1) n1) (<= 0 n3)), Black: 367#(and (<= 1 n3) (<= 1 n1) (<= 0 n2)), Black: 897#(and (= n3 n1) (<= 1 n1) (<= n3 n2)), Black: 931#(and (<= n1 n2) (<= 1 n3) (<= n3 n1) (< n3 n2)), Black: 899#(and (<= (+ n3 1) n1) (<= n3 n2) (<= 0 n3) (<= 1 n2)), Black: 933#(and (<= n1 n2) (<= 1 n3) (<= (+ n3 1) n1)), Black: 901#(and (<= n1 n2) (<= n3 n2) (<= 0 n3) (<= 1 n2)), Black: 903#(and (<= n1 n2) (<= 1 n3) (<= n3 n2)), Black: 935#(and (= n3 n1) (<= 1 n1) (< n3 n2)), Black: 905#(and (<= (+ n3 1) n1) (<= 0 n3) (<= 0 n2)), Black: 907#(and (= n3 n1) (<= 1 n1) (<= 1 n2)), Black: 909#(and (<= n1 n2) (<= 1 n3) (<= n3 n1)), Black: 879#(and (<= n1 n2) (<= n3 n2) (<= 0 n3)), Black: 911#(and (<= n3 n2) (<= 0 n3) (<= 1 n2)), Black: 880#(and (<= n3 n2) (<= 0 n3)), Black: 881#(and (<= 0 n3) (<= 0 n2)), Black: 882#(and (<= 0 n3) (<= n3 n1) (<= 0 n2)), Black: 884#(and (= n3 n1) (<= 1 n1) (<= 0 n2)), Black: 885#(and (<= 0 n3) (<= 1 n2)), Black: 917#(and (<= n1 n2) (<= 1 n3) (< n3 n2)), Black: 886#(and (<= 1 n3) (<= 1 n2)), Black: 919#(and (<= 1 n3) (<= n3 n1) (<= 1 n2)), Black: 887#(and (<= 1 n3) (< n3 n2)), Black: 891#(and (<= (+ n3 1) n1) (<= n3 n2) (<= 0 n3)), Black: 927#(and (<= (+ n3 1) n1) (<= 0 n3) (<= 1 n2)), 448#(and (<= 1 n1) (<= 0 n3) (<= 1 n2)), 964#(<= 0 n2), Black: 450#(and (<= n1 n3) (<= (+ n2 1) n1) (<= 1 n2)), Black: 434#(and (<= n1 n3) (<= n1 n2) (<= 0 n1)), Black: 436#(and (<= n1 n3) (<= 0 n1) (<= 0 n2)), Black: 452#(and (<= (+ n2 1) n1) (<= 0 n3) (<= 1 n2)), Black: 454#(and (<= n1 n3) (<= n1 n2) (<= 1 n1)), Black: 438#(and (<= n1 n3) (<= n1 n2) (<= 0 n1) (<= 1 n2)), Black: 440#(and (or (<= n1 n3) (= n2 n1)) (<= 1 n1) (<= 0 n3) (<= 1 n2)), Black: 442#(and (<= 0 n1) (<= 0 n3) (<= 1 n2)), Black: 427#(and (or (<= n1 n3) (= n2 n1)) (<= 0 n1) (<= 0 n3) (<= 0 n2)), Black: 444#(and (<= n1 n3) (<= 0 n1) (<= 1 n2)), Black: 446#(and (<= n1 n3) (<= 1 n1) (<= 1 n2)), 468#true, Black: 470#(and (<= n1 n2) (<= 0 n1) (<= n2 n1) (<= n3 n1)), Black: 471#(and (<= n1 n2) (<= 0 n1) (<= n3 n1)), Black: 472#(and (<= n1 n2) (<= 0 n1)), Black: 473#(and (<= 1 n1) (<= n1 (+ n2 1))), Black: 474#(and (<= n1 n2) (<= 1 n1)), Black: 476#(and (<= n1 n2) (<= 1 n1) (<= n3 n1)), 484#true]) [2021-03-24 15:09:34,559 INFO L384 tUnfolder$Statistics]: this new event has 28 ancestors and is not cut-off event [2021-03-24 15:09:34,559 INFO L387 tUnfolder$Statistics]: existing Event has 28 ancestors and is not cut-off event [2021-03-24 15:09:34,559 INFO L387 tUnfolder$Statistics]: existing Event has 28 ancestors and is not cut-off event [2021-03-24 15:09:34,559 INFO L387 tUnfolder$Statistics]: existing Event has 28 ancestors and is not cut-off event [2021-03-24 15:09:40,268 INFO L129 PetriNetUnfolder]: 5274/21721 cut-off events. [2021-03-24 15:09:40,268 INFO L130 PetriNetUnfolder]: For 1017575/1021962 co-relation queries the response was YES. [2021-03-24 15:09:40,722 INFO L84 FinitePrefix]: Finished finitePrefix Result has 207396 conditions, 21721 events. 5274/21721 cut-off events. For 1017575/1021962 co-relation queries the response was YES. Maximal size of possible extension queue 1234. Compared 306554 event pairs, 1214 based on Foata normal form. 1868/23019 useless extension candidates. Maximal degree in co-relation 207200. Up to 3433 conditions per place. [2021-03-24 15:09:40,790 INFO L132 encePairwiseOnDemand]: 43/57 looper letters, 848 selfloop transitions, 628 changer transitions 125/1694 dead transitions. [2021-03-24 15:09:40,790 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 1694 transitions, 51074 flow [2021-03-24 15:09:40,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-24 15:09:40,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-03-24 15:09:40,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 539 transitions. [2021-03-24 15:09:40,791 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7880116959064327 [2021-03-24 15:09:40,791 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 539 transitions. [2021-03-24 15:09:40,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 539 transitions. [2021-03-24 15:09:40,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:09:40,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 539 transitions. [2021-03-24 15:09:40,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 44.916666666666664) internal successors, (539), 12 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:09:40,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 57.0) internal successors, (741), 13 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:09:40,793 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 57.0) internal successors, (741), 13 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:09:40,793 INFO L185 Difference]: Start difference. First operand has 501 places, 1560 transitions, 45459 flow. Second operand 12 states and 539 transitions. [2021-03-24 15:09:40,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 1694 transitions, 51074 flow [2021-03-24 15:09:52,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 1694 transitions, 49451 flow, removed 559 selfloop flow, removed 9 redundant places. [2021-03-24 15:09:52,690 INFO L241 Difference]: Finished difference. Result has 509 places, 1445 transitions, 42575 flow [2021-03-24 15:09:52,691 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=39535, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=536, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=825, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=42575, PETRI_PLACES=509, PETRI_TRANSITIONS=1445} [2021-03-24 15:09:52,691 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 455 predicate places. [2021-03-24 15:09:52,691 INFO L480 AbstractCegarLoop]: Abstraction has has 509 places, 1445 transitions, 42575 flow [2021-03-24 15:09:52,691 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 36.375) internal successors, (291), 8 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) [2021-03-24 15:09:52,691 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:09:52,691 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] [2021-03-24 15:09:52,691 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-03-24 15:09:52,692 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:09:52,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:09:52,692 INFO L82 PathProgramCache]: Analyzing trace with hash -254636645, now seen corresponding path program 31 times [2021-03-24 15:09:52,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:09:52,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460474324] [2021-03-24 15:09:52,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:09:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:09:52,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:52,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-24 15:09:52,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:52,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:09:52,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:52,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:09:52,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:52,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:09:52,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:52,742 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-24 15:09:52,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:52,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-24 15:09:52,789 INFO L142 QuantifierPusher]: treesize reduction 23, result has 11.5 percent of original size [2021-03-24 15:09:52,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:09:52,795 INFO L142 QuantifierPusher]: treesize reduction 12, result has 70.7 percent of original size [2021-03-24 15:09:52,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 15:09:52,822 INFO L142 QuantifierPusher]: treesize reduction 9, result has 76.9 percent of original size [2021-03-24 15:09:52,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-24 15:09:52,846 INFO L142 QuantifierPusher]: treesize reduction 9, result has 76.9 percent of original size [2021-03-24 15:09:52,846 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-03-24 15:09:52,876 INFO L142 QuantifierPusher]: treesize reduction 16, result has 68.0 percent of original size [2021-03-24 15:09:52,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-03-24 15:09:52,911 INFO L142 QuantifierPusher]: treesize reduction 20, result has 55.6 percent of original size [2021-03-24 15:09:52,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-24 15:09:52,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:09:52,935 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:09:52,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:09:52,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460474324] [2021-03-24 15:09:52,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:09:52,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-03-24 15:09:52,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682501705] [2021-03-24 15:09:52,936 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-24 15:09:52,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:09:52,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-24 15:09:52,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-03-24 15:09:52,937 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2021-03-24 15:09:52,938 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 1445 transitions, 42575 flow. Second operand has 12 states, 12 states have (on average 35.583333333333336) internal successors, (427), 12 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:09:52,938 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:09:52,938 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2021-03-24 15:09:52,938 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:09:58,064 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[][978], [Black: 486#(and (<= n1 n2) (<= n3 n2) (<= 0 n3)), Black: 487#(and (<= n3 n2) (<= 0 n3)), Black: 490#(or (and (<= n3 (+ n1 1)) (<= 1 n1) (<= (+ n1 1) n3)) (and (<= n3 (+ n2 1)) (<= 0 n2) (<= (+ n2 1) n3))), Black: 491#(or (and (<= n3 (+ n1 1)) (<= 1 n1) (<= (+ n1 1) n3)) (and (< n2 (+ n3 1)) (<= n3 n2) (<= 1 n2))), Black: 492#(or (and (< n2 (+ n3 1)) (<= n3 n2) (<= 1 n2)) (and (< n1 (+ n3 1)) (<= n3 n1) (<= 2 n1))), Black: 493#(and (< n2 (+ n3 1)) (<= n3 n2) (<= 1 n2)), 7#L30true, Black: 495#(and (<= n1 n2) (or (= n3 n2) (and (= n3 n1) (<= 1 n1))) (<= 0 n3)), Black: 499#(and (or (= n3 n2) (and (= n3 n1) (<= 1 n1))) (<= 0 n2)), Black: 501#(and (or (and (<= n3 (+ n1 1)) (<= 1 n1) (<= (+ n1 1) n3)) (and (< n2 (+ n3 1)) (<= 1 n2))) (<= n3 n2)), Black: 505#(and (<= n1 n2) (or (and (<= n3 (+ n1 1)) (<= 1 n1) (<= (+ n1 1) n3)) (and (< n2 (+ n3 1)) (<= 1 n2))) (<= n3 n2)), 544#(and (< n1 (+ n2 1)) (<= 1 n1) (<= 0 n3) (<= n3 n1)), 32#L77true, 48#L45true, Black: 546#(and (<= n3 n2) (<= 0 n3) (<= n3 n1) (<= 1 n2)), Black: 548#(and (<= 1 n1) (<= n3 n2) (<= 0 n3) (<= n3 n1) (<= 1 n2)), 50#thread3EXITtrue, Black: 556#(and (< n1 (+ n2 1)) (<= 1 n1) (or (and (<= 0 n3) (<= n3 n1)) (= n3 n2))), Black: 558#(and (<= 1 n1) (or (and (<= n3 n2) (<= 0 n3) (<= n3 n1)) (= n3 n2)) (<= 1 n2)), Black: 529#(and (<= n1 n2) (<= 0 n3) (<= n3 n1)), Black: 530#(and (<= n3 n2) (<= 0 n3) (<= n3 n1)), Black: 535#(and (<= 1 n1) (<= 1 n2)), Black: 536#(and (< n1 (+ n2 1)) (<= 1 n1)), Black: 538#(and (<= 0 n1) (or (and (<= n3 n2) (<= 0 n3) (<= n3 n1)) (= n3 n2)) (<= 0 n2)), Black: 540#(and (<= n1 n2) (<= 0 n3) (<= n3 n1) (<= 1 n2)), Black: 542#(and (<= 0 n1) (<= 0 n2) (or (and (<= 0 n3) (<= n3 n1)) (= n3 n2))), 577#(and (<= n3 n2) (<= 0 n2)), Black: 576#(and (<= n1 n2) (<= n3 n2) (<= 0 n2)), 79#(and (<= i3 0) (<= 1 i) (<= i 1) (<= 0 i3)), Black: 578#(<= 0 n2), Black: 579#(and (<= n2 n3) (<= 0 n2)), Black: 580#(and (<= 0 n2) (<= (+ n2 1) n3)), Black: 581#(and (< n2 (+ n3 1)) (<= 1 n2)), Black: 583#(and (<= n1 n2) (<= n3 n2) (<= n2 n3) (<= 0 n2)), Black: 587#(and (< n2 (+ n3 1)) (<= n3 n2) (<= 1 n2)), 95#true, 615#(and (<= 0 n1) (<= n3 n2) (<= 0 n3) (or (<= n1 n2) (= n3 n2))), 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: 112#e2, 115#true, Black: 117#(and (<= n1 n3) (<= n3 n2) (<= n2 n3) (<= 0 n2)), Black: 119#(and (< 0 n3) (<= 0 n2)), Black: 120#(and (< 0 n3) (<= 1 n2)), Black: 121#(and (< n2 (+ n3 1)) (<= 1 n2)), Black: 129#e3, 132#true, Black: 641#(and (<= 1 n3) (<= 1 n1) (or (<= n1 n2) (= n3 n1)) (<= 0 n2)), Black: 643#(and (<= n1 n2) (<= 1 n1) (<= n3 n2) (or (<= 1 n3) (<= (+ n1 1) n2))), Black: 645#(and (<= 1 n3) (<= 1 n1) (<= n3 n2)), Black: 647#(and (<= 1 n1) (<= n3 n2) (or (<= 1 n3) (< n1 (+ n2 1)))), Black: 649#(and (<= 0 n1) (<= n3 n2) (or (<= 1 n3) (<= (+ n1 1) n2))), Black: 651#(and (<= 0 n1) (<= n3 n2) (or (<= n1 n2) (<= 1 n3))), Black: 653#(and (<= 1 n3) (<= 1 n1) (<= n3 n2) (or (<= n1 n2) (= n3 n2))), Black: 655#(and (<= 1 n1) (<= n3 n2) (or (<= 1 n3) (<= (+ n1 1) n2))), Black: 657#(and (<= 1 n1) (or (<= 1 n3) (<= (+ n1 1) n2))), 169#(and (<= 0 n3) (<= 1 n2)), Black: 659#(and (<= 1 n3) (<= 1 n1)), Black: 166#(and (<= n2 n3) (<= 1 n2)), Black: 661#(and (<= 1 n3) (<= (+ n3 1) n1) (<= n3 n2)), Black: 663#(and (<= 1 n3) (<= (+ n3 1) n1) (or (<= n1 n2) (= n3 n2))), Black: 667#(and (<= n1 n2) (<= 1 n3) (<= (+ n3 1) n1)), Black: 604#(and (<= 0 n1) (<= n3 n2) (<= 0 n2)), Black: 669#(and (<= 1 n1) (<= n3 n2) (<= 0 n3) (or (<= 1 n3) (< n1 (+ n2 1)))), Black: 605#(and (<= 0 n1) (or (<= n1 n2) (= n3 n1)) (<= 0 n2)), Black: 176#e1, Black: 607#(and (<= 0 n1) (or (<= n1 n2) (<= 1 n3))), Black: 671#(and (<= 0 n1) (<= n3 n2) (<= 0 n3) (or (<= n1 n2) (= n3 n2)) (or (<= 1 n3) (<= (+ n1 1) n2))), 179#true, Black: 608#(and (<= 0 n1) (or (<= 1 n3) (<= (+ n1 1) n2))), Black: 609#(and (<= 1 n1) (or (<= 1 n3) (< n1 (+ n2 1)))), Black: 611#(and (<= 1 n3) (<= (+ n3 1) n1)), Black: 617#(and (<= n1 n2) (<= 0 n1) (<= n3 n2) (<= 0 n3) (or (<= 1 n3) (<= (+ n1 1) n2))), Black: 619#(and (<= n1 n2) (<= 0 n1) (<= n3 n2) (<= 0 n3)), Black: 183#(and (<= n2 (+ n3 1)) (<= 1 n2)), Black: 621#(and (<= 0 n1) (or (<= 1 n3) (<= (+ n1 1) n2)) (or (<= n1 n2) (= n3 n1)) (<= 0 n2)), Black: 184#(and (<= n2 n3) (<= 1 n2)), Black: 623#(and (<= n1 n2) (<= 1 n1) (<= n3 n2) (<= 0 n3)), Black: 625#(and (<= n1 n2) (<= 1 n3) (<= 1 n1) (<= n3 n2)), Black: 627#(and (<= 0 n1) (<= n3 n2) (<= 0 n3)), Black: 631#(and (<= n1 n2) (<= 0 n1) (<= n3 n2) (or (<= 1 n3) (<= (+ n1 1) n2))), Black: 633#(and (<= n1 n2) (< 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(<= 0 n2)), Black: 249#(and (<= n1 n3) (<= 1 n3) (<= 0 n2)), Black: 251#(and (<= n1 n3) (<= 1 n3) (<= 1 n2)), Black: 253#(and (<= n1 n3) (<= 1 n3) (<= (+ n3 1) n2)), Black: 768#(and (or (<= 1 n3) (and (<= (+ n2 1) n1) (<= 0 n2))) (or (= n3 n1) (and (<= (+ n2 1) n1) (<= 0 n2)))), Black: 741#(and (or (and (= n3 n1) (<= n2 n3)) (and (<= (+ n2 1) n1) (<= 0 n2))) (<= 0 n1)), Black: 743#(and (<= 0 n1) (or (and (<= (+ n2 1) n1) (<= 0 n2)) (<= (+ n1 1) n3))), Black: 776#(and (<= (+ n2 1) n1) (<= 0 n2)), Black: 744#(and (<= 0 n1) (or (<= 1 n3) (and (<= (+ n2 1) n1) (<= 0 n2)))), Black: 745#(and (<= 0 n1) (or (<= 1 n3) (and (<= n2 n1) (<= 1 n2)))), Black: 746#(and (<= 1 n1) (or (<= 1 n3) (and (<= (+ n2 1) n1) (<= 1 n2)))), Black: 756#(and (or (<= 1 n3) (<= 1 n2)) (<= 0 n1) (or (and (<= (+ n2 1) n1) (<= 0 n2)) (<= (+ n1 1) n3))), Black: 758#(and (or (<= 1 n3) (<= 1 n2)) (<= 0 n1) (or (<= 1 n3) (<= (+ n2 1) n1))), Black: 766#(and (<= (+ n3 1) n1) (or (<= 1 n3) (and (<= (+ n2 1) n1) (<= 1 n2)))), 797#(and (<= 0 n1) (<= 0 n3) (<= 0 n2)), Black: 285#(and (<= i2 0) (<= 2 i1) (< 2 i) (<= i 3) (<= 1 i3) (<= i3 1) (<= 0 i2) (<= i1 2)), Black: 817#(and (<= n1 n2) (<= 1 n1) (<= n2 n3)), Black: 819#(and (<= n1 n3) (<= 1 n3) (<= 0 n1) (<= 0 n2)), Black: 803#(and (<= n1 n2) (<= 0 n1) (<= n2 n3)), Black: 821#(and (<= n1 n3) (<= 1 n1) (<= 0 n2)), Black: 805#(and (<= n1 n3) (<= 0 n1) (<= n2 n3) (<= 0 n2)), Black: 314#(and (<= i2 0) (<= i1 1) (< 2 i) (<= i 3) (<= i3 2) (<= 2 i3) (<= 0 i2) (<= 1 i1)), Black: 807#(and (<= n1 n2) (<= 1 n3) (<= 0 n1) (<= n2 n3)), 319#true, Black: 809#(and (<= n1 n3) (<= 1 n3) (<= 0 n1) (<= n2 n3) (<= 0 n2)), Black: 811#(and (<= n1 n3) (<= 1 n1) (<= n2 n3) (<= 0 n2)), Black: 796#(and (<= n1 n3) (<= 0 n1) (<= 0 n2)), Black: 815#(and (<= 1 n3) (<= 1 n1) (<= 0 n2)), 847#(and (<= i3 0) (<= 1 i) (<= i 1) (<= 0 i3)), Black: 322#(and (<= 0 n1) (<= n3 n1)), Black: 323#(and (<= (+ n3 1) n1) (<= 1 n1)), Black: 328#(and (<= 2 n3) (< n3 n1)), Black: 330#(and (<= (+ n3 1) n1) (<= 1 n1) (<= n2 n1)), Black: 857#(and (<= 2 i2) (<= i2 2) (<= i3 0) (<= i1 1) (< 2 i) (<= i 3) (<= 0 i3) (<= 1 i1)), Black: 865#(and (<= 0 n2) (or (and (= n3 n1) (<= 1 (+ n3 n1))) (<= n2 n3))), Black: 866#(and (<= 0 n3) (<= 1 n2)), Black: 867#(and (<= 1 n3) (<= 1 n2)), Black: 868#(and (<= n2 n3) (<= 1 n2)), 365#(and (<= 1 n1) (<= 0 n3) (<= n3 n1) (<= 0 n2)), Black: 352#(and (<= 0 n1) (<= 0 n3) (<= 0 n2)), Black: 369#(and (<= 1 n3) (<= n3 n1) (<= 0 n2)), Black: 353#(and (<= 1 n1) (<= 0 n3) (<= 0 n2)), Black: 371#(and (<= 1 n3) (<= 0 n2) (< n3 n1)), Black: 357#(and (<= 0 n3) (<= n2 n1) (<= n3 n1) (<= 0 n2)), Black: 359#(and (<= 1 n1) (<= 0 n3) (<= n2 n1) (<= n3 n1) (<= 0 n2)), Black: 361#(and (<= 0 n3) (<= n3 n1) (<= 0 n2)), 895#(and (<= n1 n2) (<= (+ n3 1) n1) (<= 0 n3)), Black: 367#(and (<= 1 n3) (<= 1 n1) (<= 0 n2)), Black: 897#(and (= n3 n1) (<= 1 n1) (<= n3 n2)), Black: 931#(and (<= n1 n2) (<= 1 n3) (<= n3 n1) (< n3 n2)), Black: 899#(and (<= (+ n3 1) n1) (<= n3 n2) (<= 0 n3) (<= 1 n2)), Black: 933#(and (<= n1 n2) (<= 1 n3) (<= (+ n3 1) n1)), Black: 901#(and (<= n1 n2) (<= n3 n2) (<= 0 n3) (<= 1 n2)), Black: 903#(and (<= n1 n2) (<= 1 n3) (<= n3 n2)), Black: 905#(and (<= (+ n3 1) n1) (<= 0 n3) (<= 0 n2)), Black: 907#(and (= n3 n1) (<= 1 n1) (<= 1 n2)), Black: 909#(and (<= n1 n2) (<= 1 n3) (<= n3 n1)), Black: 879#(and (<= n1 n2) (<= n3 n2) (<= 0 n3)), Black: 911#(and (<= n3 n2) (<= 0 n3) (<= 1 n2)), Black: 880#(and (<= n3 n2) (<= 0 n3)), Black: 881#(and (<= 0 n3) (<= 0 n2)), Black: 882#(and (<= 0 n3) (<= n3 n1) (<= 0 n2)), Black: 884#(and (= n3 n1) (<= 1 n1) (<= 0 n2)), Black: 885#(and (<= 0 n3) (<= 1 n2)), Black: 917#(and (<= n1 n2) (<= 1 n3) (< n3 n2)), Black: 886#(and (<= 1 n3) (<= 1 n2)), Black: 919#(and (<= 1 n3) (<= n3 n1) (<= 1 n2)), Black: 887#(and (<= 1 n3) (< n3 n2)), Black: 891#(and (<= (+ n3 1) n1) (<= n3 n2) (<= 0 n3)), 448#(and (<= 1 n1) (<= 0 n3) (<= 1 n2)), Black: 927#(and (<= (+ n3 1) n1) (<= 0 n3) (<= 1 n2)), 964#(<= 0 n2), Black: 450#(and (<= n1 n3) (<= (+ n2 1) n1) (<= 1 n2)), Black: 434#(and (<= n1 n3) (<= n1 n2) (<= 0 n1)), Black: 436#(and (<= n1 n3) (<= 0 n1) (<= 0 n2)), Black: 452#(and (<= (+ n2 1) n1) (<= 0 n3) (<= 1 n2)), Black: 454#(and (<= n1 n3) (<= n1 n2) (<= 1 n1)), Black: 438#(and (<= n1 n3) (<= n1 n2) (<= 0 n1) (<= 1 n2)), Black: 440#(and (or (<= n1 n3) (= n2 n1)) (<= 1 n1) (<= 0 n3) (<= 1 n2)), Black: 427#(and (or (<= n1 n3) (= n2 n1)) (<= 0 n1) (<= 0 n3) (<= 0 n2)), Black: 444#(and (<= n1 n3) (<= 0 n1) (<= 1 n2)), Black: 446#(and (<= n1 n3) (<= 1 n1) (<= 1 n2)), 468#true, Black: 978#(and (<= n1 n2) (<= 1 n3) (= n3 n2)), Black: 963#(and (<= n1 n2) (<= 0 n2)), Black: 980#(and (<= n1 n2) (<= 1 n3) (<= (+ n3 1) n2)), Black: 967#(and (<= 1 n3) (= n3 n2)), Black: 968#(and (<= 1 n3) (<= (+ n3 1) n2)), Black: 970#(and (<= n1 n2) (<= n2 n3) (<= 0 n2)), Black: 972#(and (<= n2 n3) (<= 0 n2)), Black: 974#(and (<= n1 n2) (<= 0 n2) (<= (+ n2 1) n3)), Black: 471#(and (<= n1 n2) (<= 0 n1) (<= n3 n1)), Black: 472#(and (<= n1 n2) (<= 0 n1)), Black: 473#(and (<= 1 n1) (<= n1 (+ n2 1))), Black: 474#(and (<= n1 n2) (<= 1 n1)), Black: 476#(and (<= n1 n2) (<= 1 n1) (<= n3 n1)), 996#(and (<= 0 n3) (or (= n3 0) (= n3 n1) (<= 1 n2))), 484#true]) [2021-03-24 15:09:58,064 INFO L384 tUnfolder$Statistics]: this new event has 28 ancestors and is not cut-off event [2021-03-24 15:09:58,064 INFO L387 tUnfolder$Statistics]: existing Event has 28 ancestors and is not cut-off event [2021-03-24 15:09:58,064 INFO L387 tUnfolder$Statistics]: existing Event has 28 ancestors and is not cut-off event [2021-03-24 15:09:58,064 INFO L387 tUnfolder$Statistics]: existing Event has 28 ancestors and is not cut-off event [2021-03-24 15:10:01,153 INFO L129 PetriNetUnfolder]: 3519/15106 cut-off events. [2021-03-24 15:10:01,153 INFO L130 PetriNetUnfolder]: For 702831/705415 co-relation queries the response was YES. [2021-03-24 15:10:01,420 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142532 conditions, 15106 events. 3519/15106 cut-off events. For 702831/705415 co-relation queries the response was YES. Maximal size of possible extension queue 1017. Compared 207638 event pairs, 1081 based on Foata normal form. 871/15445 useless extension candidates. Maximal degree in co-relation 142332. Up to 2398 conditions per place. [2021-03-24 15:10:01,467 INFO L132 encePairwiseOnDemand]: 40/57 looper letters, 621 selfloop transitions, 522 changer transitions 298/1503 dead transitions. [2021-03-24 15:10:01,468 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 1503 transitions, 46999 flow [2021-03-24 15:10:01,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-24 15:10:01,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-03-24 15:10:01,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 773 transitions. [2021-03-24 15:10:01,469 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.753411306042885 [2021-03-24 15:10:01,469 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 773 transitions. [2021-03-24 15:10:01,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 773 transitions. [2021-03-24 15:10:01,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:10:01,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 773 transitions. [2021-03-24 15:10:01,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 42.94444444444444) internal successors, (773), 18 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:01,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 57.0) internal successors, (1083), 19 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:01,471 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 57.0) internal successors, (1083), 19 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:01,471 INFO L185 Difference]: Start difference. First operand has 509 places, 1445 transitions, 42575 flow. Second operand 18 states and 773 transitions. [2021-03-24 15:10:01,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 1503 transitions, 46999 flow [2021-03-24 15:10:09,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 1503 transitions, 46141 flow, removed 289 selfloop flow, removed 12 redundant places. [2021-03-24 15:10:09,481 INFO L241 Difference]: Finished difference. Result has 524 places, 1078 transitions, 33414 flow [2021-03-24 15:10:09,482 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=35237, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=435, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=756, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=33414, PETRI_PLACES=524, PETRI_TRANSITIONS=1078} [2021-03-24 15:10:09,482 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 470 predicate places. [2021-03-24 15:10:09,482 INFO L480 AbstractCegarLoop]: Abstraction has has 524 places, 1078 transitions, 33414 flow [2021-03-24 15:10:09,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 35.583333333333336) internal successors, (427), 12 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:09,482 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:10:09,483 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] [2021-03-24 15:10:09,483 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-03-24 15:10:09,483 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:10:09,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:10:09,483 INFO L82 PathProgramCache]: Analyzing trace with hash -240378777, now seen corresponding path program 32 times [2021-03-24 15:10:09,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:10:09,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887446595] [2021-03-24 15:10:09,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:10:09,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:10:09,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:09,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:10:09,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:09,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-24 15:10:09,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:09,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:10:09,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:09,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:10:09,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:09,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:09,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:09,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 15:10:09,560 INFO L142 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-03-24 15:10:09,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:09,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:09,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:10:09,577 INFO L142 QuantifierPusher]: treesize reduction 7, result has 68.2 percent of original size [2021-03-24 15:10:09,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 15:10:09,584 INFO L142 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-03-24 15:10:09,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:10:09,593 INFO L142 QuantifierPusher]: treesize reduction 5, result has 58.3 percent of original size [2021-03-24 15:10:09,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:10:09,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:09,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:10:09,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:10:09,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887446595] [2021-03-24 15:10:09,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:10:09,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-24 15:10:09,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318555056] [2021-03-24 15:10:09,604 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-24 15:10:09,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:10:09,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-24 15:10:09,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-03-24 15:10:09,605 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2021-03-24 15:10:09,605 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 1078 transitions, 33414 flow. Second operand has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:09,605 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:10:09,605 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2021-03-24 15:10:09,606 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:10:12,711 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[][757], [Black: 486#(and (<= n1 n2) (<= n3 n2) (<= 0 n3)), Black: 487#(and (<= n3 n2) (<= 0 n3)), Black: 1024#(and (= n3 n1) (<= 0 n3) (<= n3 0) (<= (+ n1 1) n2)), Black: 993#(and (<= n1 n2) (<= 0 n1) (<= 0 n3) (<= n3 0)), Black: 490#(or (and (<= n3 (+ n1 1)) (<= 1 n1) (<= (+ n1 1) n3)) (and (<= n3 (+ n2 1)) (<= 0 n2) (<= (+ n2 1) n3))), Black: 994#(and (<= 0 n1) (<= 0 n3) (<= n3 0) (<= 0 n2)), Black: 491#(or (and (<= n3 (+ n1 1)) (<= 1 n1) (<= (+ n1 1) n3)) (and (< n2 (+ n3 1)) (<= n3 n2) (<= 1 n2))), Black: 492#(or (and (< n2 (+ n3 1)) (<= n3 n2) (<= 1 n2)) (and (< n1 (+ n3 1)) (<= n3 n1) (<= 2 n1))), Black: 995#(and (<= 0 n2) (or (= n3 0) (and (= n3 n1) (<= 1 n1)))), Black: 493#(and (< n2 (+ n3 1)) (<= n3 n2) (<= 1 n2)), 7#L30true, Black: 495#(and (<= n1 n2) (or (= n3 n2) (and (= n3 n1) (<= 1 n1))) (<= 0 n3)), Black: 997#(<= 1 n3), Black: 1004#(and (<= 1 n3) (<= n3 n1)), Black: 1006#(and (or (= n3 n1) (<= 1 n2)) (<= 1 n3)), Black: 499#(and (or (= n3 n2) (and (= n3 n1) (<= 1 n1))) (<= 0 n2)), Black: 501#(and (or (and (<= n3 (+ n1 1)) (<= 1 n1) (<= (+ n1 1) n3)) (and (< n2 (+ n3 1)) (<= 1 n2))) (<= n3 n2)), Black: 1008#(and (<= 1 n3) (<= (+ n3 1) n1)), Black: 1010#(and (or (= n3 n1) (<= 1 n2)) (<= 1 n3) (<= n3 n1)), Black: 1012#(and (<= 1 n3) (<= (+ n3 1) n1) (<= 1 n2)), Black: 1014#(and (<= (+ n3 1) n1) (<= 0 n3) (<= n3 0) (<= (+ n3 1) n2)), Black: 1016#(and (<= (+ n3 2) n2) (<= (+ n3 1) n1) (<= 0 n3) (<= n3 0)), Black: 1022#(and (<= (+ n3 2) n2) (< n2 n1) (<= 0 n3) (<= n3 0)), 1048#(and (<= 2 n1) (<= 0 n2)), 544#(and (< n1 (+ n2 1)) (<= 1 n1) (<= 0 n3) (<= n3 n1)), 32#L77true, 48#L45true, Black: 546#(and (<= n3 n2) (<= 0 n3) (<= n3 n1) (<= 1 n2)), Black: 548#(and (<= 1 n1) (<= n3 n2) (<= 0 n3) (<= n3 n1) (<= 1 n2)), 50#thread3EXITtrue, Black: 556#(and (< n1 (+ n2 1)) (<= 1 n1) (or (and (<= 0 n3) (<= n3 n1)) (= n3 n2))), Black: 558#(and (<= 1 n1) (or (and (<= n3 n2) (<= 0 n3) (<= n3 n1)) (= n3 n2)) (<= 1 n2)), Black: 529#(and (<= n1 n2) (<= 0 n3) (<= n3 n1)), Black: 530#(and (<= n3 n2) (<= 0 n3) (<= n3 n1)), Black: 535#(and (<= 1 n1) (<= 1 n2)), Black: 536#(and (< n1 (+ n2 1)) (<= 1 n1)), Black: 538#(and (<= 0 n1) (or (and (<= n3 n2) (<= 0 n3) (<= n3 n1)) (= n3 n2)) (<= 0 n2)), Black: 540#(and (<= n1 n2) (<= 0 n3) (<= n3 n1) (<= 1 n2)), Black: 542#(and (<= 0 n1) (<= 0 n2) (or (and (<= 0 n3) (<= n3 n1)) (= n3 n2))), 577#(and (<= n3 n2) (<= 0 n2)), 79#(and (<= i3 0) (<= 1 i) (<= i 1) (<= 0 i3)), Black: 576#(and (<= n1 n2) (<= n3 n2) (<= 0 n2)), Black: 578#(<= 0 n2), Black: 579#(and (<= n2 n3) (<= 0 n2)), Black: 580#(and (<= 0 n2) (<= (+ n2 1) n3)), Black: 581#(and (< n2 (+ n3 1)) (<= 1 n2)), Black: 583#(and (<= n1 n2) (<= n3 n2) (<= n2 n3) (<= 0 n2)), Black: 587#(and (< n2 (+ n3 1)) (<= n3 n2) (<= 1 n2)), 95#true, 615#(and (<= 0 n1) (<= n3 n2) (<= 0 n3) (or (<= n1 n2) (= n3 n2))), 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: 112#e2, 115#true, Black: 119#(and (< 0 n3) (<= 0 n2)), Black: 120#(and (< 0 n3) (<= 1 n2)), Black: 121#(and (< n2 (+ n3 1)) (<= 1 n2)), Black: 129#e3, 132#true, Black: 641#(and (<= 1 n3) (<= 1 n1) (or (<= n1 n2) (= n3 n1)) (<= 0 n2)), Black: 643#(and (<= n1 n2) (<= 1 n1) (<= n3 n2) (or (<= 1 n3) (<= (+ n1 1) n2))), Black: 645#(and (<= 1 n3) (<= 1 n1) (<= n3 n2)), Black: 647#(and (<= 1 n1) (<= n3 n2) (or (<= 1 n3) (< n1 (+ n2 1)))), Black: 649#(and (<= 0 n1) (<= n3 n2) (or (<= 1 n3) (<= (+ n1 1) n2))), Black: 651#(and (<= 0 n1) (<= n3 n2) (or (<= n1 n2) (<= 1 n3))), Black: 653#(and (<= 1 n3) (<= 1 n1) (<= n3 n2) (or (<= n1 n2) (= n3 n2))), Black: 655#(and (<= 1 n1) (<= n3 n2) (or (<= 1 n3) (<= (+ n1 1) n2))), Black: 657#(and (<= 1 n1) (or (<= 1 n3) (<= (+ n1 1) n2))), 169#(and (<= 0 n3) (<= 1 n2)), Black: 659#(and (<= 1 n3) (<= 1 n1)), Black: 166#(and (<= n2 n3) (<= 1 n2)), Black: 661#(and (<= 1 n3) (<= (+ n3 1) n1) (<= n3 n2)), Black: 663#(and (<= 1 n3) (<= (+ n3 1) n1) (or (<= n1 n2) (= n3 n2))), Black: 667#(and (<= n1 n2) (<= 1 n3) (<= (+ n3 1) n1)), Black: 604#(and (<= 0 n1) (<= n3 n2) (<= 0 n2)), Black: 669#(and (<= 1 n1) (<= n3 n2) (<= 0 n3) (or (<= 1 n3) (< n1 (+ n2 1)))), Black: 605#(and (<= 0 n1) (or (<= n1 n2) (= n3 n1)) (<= 0 n2)), Black: 607#(and (<= 0 n1) (or (<= n1 n2) (<= 1 n3))), Black: 176#e1, Black: 671#(and (<= 0 n1) (<= n3 n2) (<= 0 n3) (or (<= n1 n2) (= n3 n2)) (or (<= 1 n3) (<= (+ n1 1) n2))), 179#true, Black: 608#(and (<= 0 n1) (or (<= 1 n3) (<= (+ n1 1) n2))), Black: 609#(and (<= 1 n1) (or (<= 1 n3) (< n1 (+ n2 1)))), Black: 611#(and (<= 1 n3) (<= (+ n3 1) n1)), Black: 617#(and (<= n1 n2) (<= 0 n1) (<= n3 n2) (<= 0 n3) (or (<= 1 n3) (<= (+ n1 1) n2))), Black: 619#(and (<= n1 n2) (<= 0 n1) (<= n3 n2) (<= 0 n3)), Black: 183#(and (<= n2 (+ n3 1)) (<= 1 n2)), Black: 184#(and (<= n2 n3) (<= 1 n2)), Black: 623#(and (<= n1 n2) (<= 1 n1) (<= n3 n2) (<= 0 n3)), Black: 625#(and (<= n1 n2) (<= 1 n3) (<= 1 n1) (<= n3 n2)), Black: 627#(and (<= 0 n1) (<= n3 n2) (<= 0 n3)), Black: 631#(and (<= n1 n2) (<= 0 n1) (<= n3 n2) (or (<= 1 n3) (<= (+ n1 1) n2))), Black: 633#(and (<= n1 n2) (< n2 (+ n3 1)) (<= 1 n1) (<= n3 n2)), Black: 635#(and (<= n1 n2) (<= 1 n1) (<= n3 n2)), Black: 637#(and (<= n1 n2) (<= 0 n1) (<= n3 n2)), Black: 639#(and (<= 1 n1) (or (<= n1 n2) (= n3 n1)) (<= 0 n2)), 707#true, Black: 722#(and (< n1 (+ n2 1)) (<= 1 n1) (<= n3 n2)), Black: 710#(and (<= n1 n2) (<= 0 n3) (<= n3 n1)), 217#true, Black: 711#(and (<= n1 n2) (<= 0 n1) (<= n3 n2)), Black: 712#(and (<= n1 n2) (<= 0 n1)), Black: 713#(and (<= 0 n1) (<= (+ n1 1) n2)), Black: 714#(and (< n1 (+ n2 1)) (<= 1 n1)), 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(<= 0 n1) (or (<= 1 n3) (<= (+ n2 1) n1))), Black: 766#(and (<= (+ n3 1) n1) (or (<= 1 n3) (and (<= (+ n2 1) n1) (<= 1 n2)))), 797#(and (<= 0 n1) (<= 0 n3) (<= 0 n2)), Black: 285#(and (<= i2 0) (<= 2 i1) (< 2 i) (<= i 3) (<= 1 i3) (<= i3 1) (<= 0 i2) (<= i1 2)), Black: 817#(and (<= n1 n2) (<= 1 n1) (<= n2 n3)), Black: 819#(and (<= n1 n3) (<= 1 n3) (<= 0 n1) (<= 0 n2)), Black: 803#(and (<= n1 n2) (<= 0 n1) (<= n2 n3)), Black: 821#(and (<= n1 n3) (<= 1 n1) (<= 0 n2)), Black: 805#(and (<= n1 n3) (<= 0 n1) (<= n2 n3) (<= 0 n2)), Black: 314#(and (<= i2 0) (<= i1 1) (< 2 i) (<= i 3) (<= i3 2) (<= 2 i3) (<= 0 i2) (<= 1 i1)), Black: 807#(and (<= n1 n2) (<= 1 n3) (<= 0 n1) (<= n2 n3)), 319#true, Black: 809#(and (<= n1 n3) (<= 1 n3) (<= 0 n1) (<= n2 n3) (<= 0 n2)), Black: 811#(and (<= n1 n3) (<= 1 n1) (<= n2 n3) (<= 0 n2)), Black: 796#(and (<= n1 n3) (<= 0 n1) (<= 0 n2)), Black: 815#(and (<= 1 n3) (<= 1 n1) (<= 0 n2)), 847#(and (<= i3 0) (<= 1 i) (<= i 1) (<= 0 i3)), Black: 322#(and (<= 0 n1) (<= n3 n1)), Black: 323#(and (<= (+ n3 1) n1) (<= 1 n1)), Black: 328#(and (<= 2 n3) (< n3 n1)), Black: 330#(and (<= (+ n3 1) n1) (<= 1 n1) (<= n2 n1)), Black: 857#(and (<= 2 i2) (<= i2 2) (<= i3 0) (<= i1 1) (< 2 i) (<= i 3) (<= 0 i3) (<= 1 i1)), Black: 865#(and (<= 0 n2) (or (and (= n3 n1) (<= 1 (+ n3 n1))) (<= n2 n3))), Black: 866#(and (<= 0 n3) (<= 1 n2)), Black: 867#(and (<= 1 n3) (<= 1 n2)), Black: 868#(and (<= n2 n3) (<= 1 n2)), 365#(and (<= 1 n1) (<= 0 n3) (<= n3 n1) (<= 0 n2)), Black: 352#(and (<= 0 n1) (<= 0 n3) (<= 0 n2)), Black: 369#(and (<= 1 n3) (<= n3 n1) (<= 0 n2)), Black: 353#(and (<= 1 n1) (<= 0 n3) (<= 0 n2)), Black: 371#(and (<= 1 n3) (<= 0 n2) (< n3 n1)), Black: 357#(and (<= 0 n3) (<= n2 n1) (<= n3 n1) (<= 0 n2)), Black: 359#(and (<= 1 n1) (<= 0 n3) (<= n2 n1) (<= n3 n1) (<= 0 n2)), Black: 361#(and (<= 0 n3) (<= n3 n1) (<= 0 n2)), 895#(and (<= n1 n2) (<= (+ n3 1) n1) (<= 0 n3)), Black: 367#(and (<= 1 n3) (<= 1 n1) (<= 0 n2)), Black: 897#(and (= n3 n1) (<= 1 n1) (<= n3 n2)), Black: 931#(and (<= n1 n2) (<= 1 n3) (<= n3 n1) (< n3 n2)), Black: 899#(and (<= (+ n3 1) n1) (<= n3 n2) (<= 0 n3) (<= 1 n2)), Black: 933#(and (<= n1 n2) (<= 1 n3) (<= (+ n3 1) n1)), Black: 901#(and (<= n1 n2) (<= n3 n2) (<= 0 n3) (<= 1 n2)), Black: 903#(and (<= n1 n2) (<= 1 n3) (<= n3 n2)), Black: 905#(and (<= (+ n3 1) n1) (<= 0 n3) (<= 0 n2)), Black: 907#(and (= n3 n1) (<= 1 n1) (<= 1 n2)), Black: 909#(and (<= n1 n2) (<= 1 n3) (<= n3 n1)), Black: 879#(and (<= n1 n2) (<= n3 n2) (<= 0 n3)), Black: 911#(and (<= n3 n2) (<= 0 n3) (<= 1 n2)), Black: 880#(and (<= n3 n2) (<= 0 n3)), Black: 881#(and (<= 0 n3) (<= 0 n2)), Black: 882#(and (<= 0 n3) (<= n3 n1) (<= 0 n2)), Black: 884#(and (= n3 n1) (<= 1 n1) (<= 0 n2)), Black: 885#(and (<= 0 n3) (<= 1 n2)), Black: 917#(and (<= n1 n2) (<= 1 n3) (< n3 n2)), Black: 886#(and (<= 1 n3) (<= 1 n2)), Black: 919#(and (<= 1 n3) (<= n3 n1) (<= 1 n2)), Black: 887#(and (<= 1 n3) (< n3 n2)), Black: 891#(and (<= (+ n3 1) n1) (<= n3 n2) (<= 0 n3)), Black: 927#(and (<= (+ n3 1) n1) (<= 0 n3) (<= 1 n2)), 448#(and (<= 1 n1) (<= 0 n3) (<= 1 n2)), 964#(<= 0 n2), Black: 450#(and (<= n1 n3) (<= (+ n2 1) n1) (<= 1 n2)), Black: 434#(and (<= n1 n3) (<= n1 n2) (<= 0 n1)), Black: 436#(and (<= n1 n3) (<= 0 n1) (<= 0 n2)), Black: 452#(and (<= (+ n2 1) n1) (<= 0 n3) (<= 1 n2)), Black: 454#(and (<= n1 n3) (<= n1 n2) (<= 1 n1)), Black: 438#(and (<= n1 n3) (<= n1 n2) (<= 0 n1) (<= 1 n2)), Black: 440#(and (or (<= n1 n3) (= n2 n1)) (<= 1 n1) (<= 0 n3) (<= 1 n2)), Black: 427#(and (or (<= n1 n3) (= n2 n1)) (<= 0 n1) (<= 0 n3) (<= 0 n2)), Black: 444#(and (<= n1 n3) (<= 0 n1) (<= 1 n2)), Black: 446#(and (<= n1 n3) (<= 1 n1) (<= 1 n2)), 468#true, Black: 978#(and (<= n1 n2) (<= 1 n3) (= n3 n2)), Black: 963#(and (<= n1 n2) (<= 0 n2)), Black: 980#(and (<= n1 n2) (<= 1 n3) (<= (+ n3 1) n2)), Black: 967#(and (<= 1 n3) (= n3 n2)), Black: 968#(and (<= 1 n3) (<= (+ n3 1) n2)), Black: 970#(and (<= n1 n2) (<= n2 n3) (<= 0 n2)), Black: 972#(and (<= n2 n3) (<= 0 n2)), Black: 974#(and (<= n1 n2) (<= 0 n2) (<= (+ n2 1) n3)), Black: 471#(and (<= n1 n2) (<= 0 n1) (<= n3 n1)), Black: 472#(and (<= n1 n2) (<= 0 n1)), Black: 473#(and (<= 1 n1) (<= n1 (+ n2 1))), Black: 474#(and (<= n1 n2) (<= 1 n1)), Black: 476#(and (<= n1 n2) (<= 1 n1) (<= n3 n1)), 484#true, 996#(and (<= 0 n3) (or (= n3 0) (= n3 n1) (<= 1 n2)))]) [2021-03-24 15:10:12,711 INFO L384 tUnfolder$Statistics]: this new event has 28 ancestors and is not cut-off event [2021-03-24 15:10:12,711 INFO L387 tUnfolder$Statistics]: existing Event has 28 ancestors and is not cut-off event [2021-03-24 15:10:12,711 INFO L387 tUnfolder$Statistics]: existing Event has 28 ancestors and is not cut-off event [2021-03-24 15:10:12,711 INFO L387 tUnfolder$Statistics]: existing Event has 28 ancestors and is not cut-off event [2021-03-24 15:10:14,720 INFO L129 PetriNetUnfolder]: 2403/10875 cut-off events. [2021-03-24 15:10:14,720 INFO L130 PetriNetUnfolder]: For 519238/521108 co-relation queries the response was YES. [2021-03-24 15:10:14,887 INFO L84 FinitePrefix]: Finished finitePrefix Result has 105080 conditions, 10875 events. 2403/10875 cut-off events. For 519238/521108 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 142810 event pairs, 822 based on Foata normal form. 410/10941 useless extension candidates. Maximal degree in co-relation 104874. Up to 4378 conditions per place. [2021-03-24 15:10:14,918 INFO L132 encePairwiseOnDemand]: 42/57 looper letters, 741 selfloop transitions, 89 changer transitions 293/1182 dead transitions. [2021-03-24 15:10:14,918 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 1182 transitions, 38246 flow [2021-03-24 15:10:14,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-24 15:10:14,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-03-24 15:10:14,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 672 transitions. [2021-03-24 15:10:14,919 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7368421052631579 [2021-03-24 15:10:14,919 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 672 transitions. [2021-03-24 15:10:14,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 672 transitions. [2021-03-24 15:10:14,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:10:14,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 672 transitions. [2021-03-24 15:10:14,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 42.0) internal successors, (672), 16 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:14,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 57.0) internal successors, (969), 17 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:14,921 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 57.0) internal successors, (969), 17 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:14,921 INFO L185 Difference]: Start difference. First operand has 524 places, 1078 transitions, 33414 flow. Second operand 16 states and 672 transitions. [2021-03-24 15:10:14,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 1182 transitions, 38246 flow [2021-03-24 15:10:19,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 1182 transitions, 37271 flow, removed 303 selfloop flow, removed 27 redundant places. [2021-03-24 15:10:19,933 INFO L241 Difference]: Finished difference. Result has 499 places, 848 transitions, 25529 flow [2021-03-24 15:10:19,934 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=31089, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1034, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=946, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=25529, PETRI_PLACES=499, PETRI_TRANSITIONS=848} [2021-03-24 15:10:19,934 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 445 predicate places. [2021-03-24 15:10:19,934 INFO L480 AbstractCegarLoop]: Abstraction has has 499 places, 848 transitions, 25529 flow [2021-03-24 15:10:19,934 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:19,934 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:10:19,934 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] [2021-03-24 15:10:19,934 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-03-24 15:10:19,934 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:10:19,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:10:19,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1037829425, now seen corresponding path program 33 times [2021-03-24 15:10:19,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:10:19,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561984865] [2021-03-24 15:10:19,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:10:19,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:10:19,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:19,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:10:19,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:19,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:19,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:19,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:10:19,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:19,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:10:19,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:19,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:10:19,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:19,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:10:19,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:19,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:10:19,994 INFO L142 QuantifierPusher]: treesize reduction 1, result has 92.3 percent of original size [2021-03-24 15:10:19,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 15:10:20,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:20,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:10:20,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:10:20,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561984865] [2021-03-24 15:10:20,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:10:20,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 15:10:20,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940156256] [2021-03-24 15:10:20,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 15:10:20,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:10:20,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 15:10:20,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-03-24 15:10:20,007 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2021-03-24 15:10:20,007 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 848 transitions, 25529 flow. Second operand has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:20,007 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:10:20,007 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2021-03-24 15:10:20,007 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:10:23,724 INFO L129 PetriNetUnfolder]: 1970/9204 cut-off events. [2021-03-24 15:10:23,725 INFO L130 PetriNetUnfolder]: For 408016/409347 co-relation queries the response was YES. [2021-03-24 15:10:23,848 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85779 conditions, 9204 events. 1970/9204 cut-off events. For 408016/409347 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 118805 event pairs, 646 based on Foata normal form. 464/9368 useless extension candidates. Maximal degree in co-relation 85587. Up to 1677 conditions per place. [2021-03-24 15:10:23,873 INFO L132 encePairwiseOnDemand]: 46/57 looper letters, 412 selfloop transitions, 296 changer transitions 117/884 dead transitions. [2021-03-24 15:10:23,873 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 884 transitions, 27532 flow [2021-03-24 15:10:23,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 15:10:23,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 15:10:23,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 393 transitions. [2021-03-24 15:10:23,874 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7660818713450293 [2021-03-24 15:10:23,874 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 393 transitions. [2021-03-24 15:10:23,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 393 transitions. [2021-03-24 15:10:23,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:10:23,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 393 transitions. [2021-03-24 15:10:23,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 43.666666666666664) internal successors, (393), 9 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:23,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 57.0) internal successors, (570), 10 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:23,875 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 57.0) internal successors, (570), 10 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:23,875 INFO L185 Difference]: Start difference. First operand has 499 places, 848 transitions, 25529 flow. Second operand 9 states and 393 transitions. [2021-03-24 15:10:23,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 884 transitions, 27532 flow [2021-03-24 15:10:27,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 884 transitions, 26727 flow, removed 208 selfloop flow, removed 17 redundant places. [2021-03-24 15:10:27,154 INFO L241 Difference]: Finished difference. Result has 487 places, 730 transitions, 22129 flow [2021-03-24 15:10:27,155 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=23756, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=822, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=294, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=22129, PETRI_PLACES=487, PETRI_TRANSITIONS=730} [2021-03-24 15:10:27,155 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 433 predicate places. [2021-03-24 15:10:27,155 INFO L480 AbstractCegarLoop]: Abstraction has has 487 places, 730 transitions, 22129 flow [2021-03-24 15:10:27,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:27,155 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:10:27,156 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:10:27,156 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-03-24 15:10:27,156 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:10:27,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:10:27,156 INFO L82 PathProgramCache]: Analyzing trace with hash 2025316797, now seen corresponding path program 34 times [2021-03-24 15:10:27,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:10:27,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136791862] [2021-03-24 15:10:27,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:10:27,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:10:27,184 INFO L142 QuantifierPusher]: treesize reduction 36, result has 37.9 percent of original size [2021-03-24 15:10:27,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-24 15:10:27,201 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-24 15:10:27,202 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:10:27,204 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:27,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:10:27,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:27,210 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 15:10:27,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:27,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:10:27,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:27,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 15:10:27,229 INFO L142 QuantifierPusher]: treesize reduction 5, result has 75.0 percent of original size [2021-03-24 15:10:27,230 INFO L147 QuantifierPusher]: treesize reduction 6, result has 60.0 percent of original size 9 [2021-03-24 15:10:27,243 INFO L142 QuantifierPusher]: treesize reduction 12, result has 50.0 percent of original size [2021-03-24 15:10:27,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 15:10:27,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:27,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:10:27,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:10:27,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136791862] [2021-03-24 15:10:27,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:10:27,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 15:10:27,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467092969] [2021-03-24 15:10:27,255 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 15:10:27,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:10:27,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 15:10:27,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-03-24 15:10:27,256 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2021-03-24 15:10:27,256 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 730 transitions, 22129 flow. Second operand has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:27,256 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:10:27,256 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2021-03-24 15:10:27,256 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:10:30,453 INFO L129 PetriNetUnfolder]: 1751/8256 cut-off events. [2021-03-24 15:10:30,454 INFO L130 PetriNetUnfolder]: For 368382/369617 co-relation queries the response was YES. [2021-03-24 15:10:30,564 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77885 conditions, 8256 events. 1751/8256 cut-off events. For 368382/369617 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 104585 event pairs, 566 based on Foata normal form. 355/8352 useless extension candidates. Maximal degree in co-relation 77702. Up to 2158 conditions per place. [2021-03-24 15:10:30,589 INFO L132 encePairwiseOnDemand]: 45/57 looper letters, 444 selfloop transitions, 211 changer transitions 116/830 dead transitions. [2021-03-24 15:10:30,589 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 830 transitions, 26115 flow [2021-03-24 15:10:30,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-24 15:10:30,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-24 15:10:30,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 480 transitions. [2021-03-24 15:10:30,590 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7655502392344498 [2021-03-24 15:10:30,590 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 480 transitions. [2021-03-24 15:10:30,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 480 transitions. [2021-03-24 15:10:30,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:10:30,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 480 transitions. [2021-03-24 15:10:30,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 43.63636363636363) internal successors, (480), 11 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) [2021-03-24 15:10:30,591 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) [2021-03-24 15:10:30,591 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) [2021-03-24 15:10:30,591 INFO L185 Difference]: Start difference. First operand has 487 places, 730 transitions, 22129 flow. Second operand 11 states and 480 transitions. [2021-03-24 15:10:30,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 830 transitions, 26115 flow [2021-03-24 15:10:33,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 830 transitions, 25332 flow, removed 100 selfloop flow, removed 15 redundant places. [2021-03-24 15:10:33,237 INFO L241 Difference]: Finished difference. Result has 481 places, 655 transitions, 20147 flow [2021-03-24 15:10:33,237 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=20913, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=718, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=20147, PETRI_PLACES=481, PETRI_TRANSITIONS=655} [2021-03-24 15:10:33,238 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 427 predicate places. [2021-03-24 15:10:33,238 INFO L480 AbstractCegarLoop]: Abstraction has has 481 places, 655 transitions, 20147 flow [2021-03-24 15:10:33,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:33,238 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:10:33,238 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] [2021-03-24 15:10:33,238 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-03-24 15:10:33,238 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:10:33,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:10:33,238 INFO L82 PathProgramCache]: Analyzing trace with hash -420531127, now seen corresponding path program 35 times [2021-03-24 15:10:33,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:10:33,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055714699] [2021-03-24 15:10:33,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:10:33,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:10:33,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:33,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:33,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:33,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:33,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:33,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:33,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:33,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 15:10:33,268 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-03-24 15:10:33,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 15:10:33,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:33,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 15:10:33,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:33,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:33,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:33,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:10:33,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:33,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:10:33,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:33,316 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:10:33,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:33,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:10:33,333 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:33,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:10:33,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:10:33,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055714699] [2021-03-24 15:10:33,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:10:33,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-24 15:10:33,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211472128] [2021-03-24 15:10:33,335 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-24 15:10:33,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:10:33,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-24 15:10:33,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-03-24 15:10:33,335 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2021-03-24 15:10:33,336 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 655 transitions, 20147 flow. Second operand has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:33,336 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:10:33,336 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2021-03-24 15:10:33,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:10:36,262 INFO L129 PetriNetUnfolder]: 1636/7711 cut-off events. [2021-03-24 15:10:36,263 INFO L130 PetriNetUnfolder]: For 341167/342438 co-relation queries the response was YES. [2021-03-24 15:10:36,366 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71823 conditions, 7711 events. 1636/7711 cut-off events. For 341167/342438 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 96898 event pairs, 707 based on Foata normal form. 164/7619 useless extension candidates. Maximal degree in co-relation 71646. Up to 3819 conditions per place. [2021-03-24 15:10:36,387 INFO L132 encePairwiseOnDemand]: 47/57 looper letters, 537 selfloop transitions, 8 changer transitions 72/676 dead transitions. [2021-03-24 15:10:36,387 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 676 transitions, 21924 flow [2021-03-24 15:10:36,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 15:10:36,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 15:10:36,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 402 transitions. [2021-03-24 15:10:36,388 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7052631578947368 [2021-03-24 15:10:36,388 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 402 transitions. [2021-03-24 15:10:36,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 402 transitions. [2021-03-24 15:10:36,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:10:36,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 402 transitions. [2021-03-24 15:10:36,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 40.2) internal successors, (402), 10 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:36,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 57.0) internal successors, (627), 11 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:36,389 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 57.0) internal successors, (627), 11 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:36,389 INFO L185 Difference]: Start difference. First operand has 481 places, 655 transitions, 20147 flow. Second operand 10 states and 402 transitions. [2021-03-24 15:10:36,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 676 transitions, 21924 flow [2021-03-24 15:10:38,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 676 transitions, 21237 flow, removed 121 selfloop flow, removed 20 redundant places. [2021-03-24 15:10:38,855 INFO L241 Difference]: Finished difference. Result has 469 places, 599 transitions, 17662 flow [2021-03-24 15:10:38,855 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=19368, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=644, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17662, PETRI_PLACES=469, PETRI_TRANSITIONS=599} [2021-03-24 15:10:38,856 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 415 predicate places. [2021-03-24 15:10:38,856 INFO L480 AbstractCegarLoop]: Abstraction has has 469 places, 599 transitions, 17662 flow [2021-03-24 15:10:38,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:38,856 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:10:38,856 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:10:38,856 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-03-24 15:10:38,856 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:10:38,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:10:38,857 INFO L82 PathProgramCache]: Analyzing trace with hash 43044793, now seen corresponding path program 36 times [2021-03-24 15:10:38,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:10:38,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984245456] [2021-03-24 15:10:38,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:10:38,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:10:38,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:38,873 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:10:38,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:38,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:10:38,884 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:38,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:10:38,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:38,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:10:38,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:38,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 15:10:38,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:38,907 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 15:10:38,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:38,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 15:10:38,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:38,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 15:10:38,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:38,925 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:10:38,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:38,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:10:38,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:38,944 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:10:38,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:38,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:10:38,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:38,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:10:38,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:10:38,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984245456] [2021-03-24 15:10:38,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:10:38,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-24 15:10:38,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021957226] [2021-03-24 15:10:38,967 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-24 15:10:38,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:10:38,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-24 15:10:38,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-03-24 15:10:38,968 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2021-03-24 15:10:38,968 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 599 transitions, 17662 flow. Second operand has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:38,969 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:10:38,969 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2021-03-24 15:10:38,969 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:10:41,247 INFO L129 PetriNetUnfolder]: 1507/7139 cut-off events. [2021-03-24 15:10:41,247 INFO L130 PetriNetUnfolder]: For 295121/296350 co-relation queries the response was YES. [2021-03-24 15:10:41,346 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64422 conditions, 7139 events. 1507/7139 cut-off events. For 295121/296350 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 88856 event pairs, 662 based on Foata normal form. 155/7066 useless extension candidates. Maximal degree in co-relation 64256. Up to 3686 conditions per place. [2021-03-24 15:10:41,365 INFO L132 encePairwiseOnDemand]: 48/57 looper letters, 517 selfloop transitions, 4 changer transitions 24/600 dead transitions. [2021-03-24 15:10:41,365 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 600 transitions, 18751 flow [2021-03-24 15:10:41,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-24 15:10:41,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-24 15:10:41,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 422 transitions. [2021-03-24 15:10:41,367 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6730462519936204 [2021-03-24 15:10:41,367 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 422 transitions. [2021-03-24 15:10:41,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 422 transitions. [2021-03-24 15:10:41,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:10:41,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 422 transitions. [2021-03-24 15:10:41,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 38.36363636363637) internal successors, (422), 11 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:41,368 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) [2021-03-24 15:10:41,368 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) [2021-03-24 15:10:41,368 INFO L185 Difference]: Start difference. First operand has 469 places, 599 transitions, 17662 flow. Second operand 11 states and 422 transitions. [2021-03-24 15:10:41,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 600 transitions, 18751 flow [2021-03-24 15:10:43,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 600 transitions, 18178 flow, removed 85 selfloop flow, removed 24 redundant places. [2021-03-24 15:10:43,263 INFO L241 Difference]: Finished difference. Result has 442 places, 575 transitions, 16506 flow [2021-03-24 15:10:43,263 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=16841, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=585, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=16506, PETRI_PLACES=442, PETRI_TRANSITIONS=575} [2021-03-24 15:10:43,263 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 388 predicate places. [2021-03-24 15:10:43,263 INFO L480 AbstractCegarLoop]: Abstraction has has 442 places, 575 transitions, 16506 flow [2021-03-24 15:10:43,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 35.72727272727273) internal successors, (393), 11 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:43,263 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:10:43,264 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] [2021-03-24 15:10:43,264 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-03-24 15:10:43,264 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:10:43,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:10:43,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1298500529, now seen corresponding path program 37 times [2021-03-24 15:10:43,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:10:43,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785707805] [2021-03-24 15:10:43,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:10:43,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:10:43,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:43,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-24 15:10:43,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:43,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-24 15:10:43,306 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:43,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-24 15:10:43,309 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:43,309 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:10:43,313 INFO L142 QuantifierPusher]: treesize reduction 7, result has 65.0 percent of original size [2021-03-24 15:10:43,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:10:43,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:43,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 15:10:43,334 INFO L142 QuantifierPusher]: treesize reduction 7, result has 81.6 percent of original size [2021-03-24 15:10:43,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 15:10:43,355 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size [2021-03-24 15:10:43,356 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 15:10:43,374 INFO L142 QuantifierPusher]: treesize reduction 3, result has 87.5 percent of original size [2021-03-24 15:10:43,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:43,394 INFO L142 QuantifierPusher]: treesize reduction 14, result has 65.9 percent of original size [2021-03-24 15:10:43,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 15:10:43,420 INFO L142 QuantifierPusher]: treesize reduction 25, result has 32.4 percent of original size [2021-03-24 15:10:43,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 15:10:43,421 INFO L142 QuantifierPusher]: treesize reduction 10, result has 9.1 percent of original size [2021-03-24 15:10:43,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:10:43,422 INFO L142 QuantifierPusher]: treesize reduction 18, result has 5.3 percent of original size [2021-03-24 15:10:43,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:10:43,423 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:43,423 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:10:43,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:10:43,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785707805] [2021-03-24 15:10:43,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:10:43,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 15:10:43,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855945338] [2021-03-24 15:10:43,424 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 15:10:43,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:10:43,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 15:10:43,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-24 15:10:43,425 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2021-03-24 15:10:43,425 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 575 transitions, 16506 flow. Second operand has 8 states, 8 states have (on average 36.375) internal successors, (291), 8 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) [2021-03-24 15:10:43,425 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:10:43,425 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2021-03-24 15:10:43,425 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:10:45,389 INFO L129 PetriNetUnfolder]: 1312/6248 cut-off events. [2021-03-24 15:10:45,390 INFO L130 PetriNetUnfolder]: For 241045/241979 co-relation queries the response was YES. [2021-03-24 15:10:45,471 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55043 conditions, 6248 events. 1312/6248 cut-off events. For 241045/241979 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 75990 event pairs, 482 based on Foata normal form. 369/6398 useless extension candidates. Maximal degree in co-relation 54892. Up to 2803 conditions per place. [2021-03-24 15:10:45,490 INFO L132 encePairwiseOnDemand]: 46/57 looper letters, 413 selfloop transitions, 87 changer transitions 10/563 dead transitions. [2021-03-24 15:10:45,490 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 563 transitions, 16832 flow [2021-03-24 15:10:45,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 15:10:45,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 15:10:45,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 337 transitions. [2021-03-24 15:10:45,491 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7390350877192983 [2021-03-24 15:10:45,491 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 337 transitions. [2021-03-24 15:10:45,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 337 transitions. [2021-03-24 15:10:45,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:10:45,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 337 transitions. [2021-03-24 15:10:45,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 42.125) internal successors, (337), 8 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:45,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:45,493 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:45,493 INFO L185 Difference]: Start difference. First operand has 442 places, 575 transitions, 16506 flow. Second operand 8 states and 337 transitions. [2021-03-24 15:10:45,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 563 transitions, 16832 flow [2021-03-24 15:10:46,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 563 transitions, 16419 flow, removed 50 selfloop flow, removed 12 redundant places. [2021-03-24 15:10:46,962 INFO L241 Difference]: Finished difference. Result has 428 places, 534 transitions, 15147 flow [2021-03-24 15:10:46,962 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=14891, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15147, PETRI_PLACES=428, PETRI_TRANSITIONS=534} [2021-03-24 15:10:46,963 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 374 predicate places. [2021-03-24 15:10:46,963 INFO L480 AbstractCegarLoop]: Abstraction has has 428 places, 534 transitions, 15147 flow [2021-03-24 15:10:46,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 36.375) internal successors, (291), 8 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) [2021-03-24 15:10:46,963 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:10:46,963 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] [2021-03-24 15:10:46,963 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-03-24 15:10:46,963 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:10:46,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:10:46,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1999827187, now seen corresponding path program 38 times [2021-03-24 15:10:46,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:10:46,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875324608] [2021-03-24 15:10:46,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:10:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:10:46,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:46,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:10:46,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:46,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:10:46,988 INFO L142 QuantifierPusher]: treesize reduction 4, result has 85.7 percent of original size [2021-03-24 15:10:46,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-24 15:10:46,991 INFO L142 QuantifierPusher]: treesize reduction 13, result has 58.1 percent of original size [2021-03-24 15:10:46,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-24 15:10:46,994 INFO L142 QuantifierPusher]: treesize reduction 6, result has 81.8 percent of original size [2021-03-24 15:10:46,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 15:10:47,005 INFO L142 QuantifierPusher]: treesize reduction 14, result has 58.8 percent of original size [2021-03-24 15:10:47,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-24 15:10:47,019 INFO L142 QuantifierPusher]: treesize reduction 7, result has 79.4 percent of original size [2021-03-24 15:10:47,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 15:10:47,052 INFO L142 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-03-24 15:10:47,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:10:47,063 INFO L142 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-03-24 15:10:47,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:10:47,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:47,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 15:10:47,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:47,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:10:47,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:10:47,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875324608] [2021-03-24 15:10:47,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:10:47,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 15:10:47,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928152878] [2021-03-24 15:10:47,089 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 15:10:47,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:10:47,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 15:10:47,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-24 15:10:47,090 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2021-03-24 15:10:47,090 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 534 transitions, 15147 flow. Second operand has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:47,090 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:10:47,090 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2021-03-24 15:10:47,090 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:10:48,893 INFO L129 PetriNetUnfolder]: 1197/5718 cut-off events. [2021-03-24 15:10:48,893 INFO L130 PetriNetUnfolder]: For 216839/217599 co-relation queries the response was YES. [2021-03-24 15:10:48,948 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50719 conditions, 5718 events. 1197/5718 cut-off events. For 216839/217599 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 68124 event pairs, 366 based on Foata normal form. 325/5856 useless extension candidates. Maximal degree in co-relation 50574. Up to 2075 conditions per place. [2021-03-24 15:10:48,964 INFO L132 encePairwiseOnDemand]: 45/57 looper letters, 361 selfloop transitions, 131 changer transitions 23/568 dead transitions. [2021-03-24 15:10:48,964 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 568 transitions, 16852 flow [2021-03-24 15:10:48,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 15:10:48,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 15:10:48,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 421 transitions. [2021-03-24 15:10:48,965 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7385964912280701 [2021-03-24 15:10:48,965 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 421 transitions. [2021-03-24 15:10:48,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 421 transitions. [2021-03-24 15:10:48,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:10:48,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 421 transitions. [2021-03-24 15:10:48,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 42.1) internal successors, (421), 10 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:48,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 57.0) internal successors, (627), 11 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:48,966 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 57.0) internal successors, (627), 11 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:48,966 INFO L185 Difference]: Start difference. First operand has 428 places, 534 transitions, 15147 flow. Second operand 10 states and 421 transitions. [2021-03-24 15:10:48,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 568 transitions, 16852 flow [2021-03-24 15:10:50,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 568 transitions, 16686 flow, removed 17 selfloop flow, removed 5 redundant places. [2021-03-24 15:10:50,100 INFO L241 Difference]: Finished difference. Result has 435 places, 519 transitions, 14958 flow [2021-03-24 15:10:50,101 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=14640, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14958, PETRI_PLACES=435, PETRI_TRANSITIONS=519} [2021-03-24 15:10:50,101 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 381 predicate places. [2021-03-24 15:10:50,101 INFO L480 AbstractCegarLoop]: Abstraction has has 435 places, 519 transitions, 14958 flow [2021-03-24 15:10:50,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:50,101 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:10:50,101 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:10:50,101 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-03-24 15:10:50,101 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:10:50,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:10:50,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1013462417, now seen corresponding path program 39 times [2021-03-24 15:10:50,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:10:50,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114027000] [2021-03-24 15:10:50,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:10:50,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:10:50,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:50,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-24 15:10:50,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:50,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-24 15:10:50,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:50,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-24 15:10:50,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:50,146 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:10:50,149 INFO L142 QuantifierPusher]: treesize reduction 7, result has 65.0 percent of original size [2021-03-24 15:10:50,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:10:50,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:50,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-24 15:10:50,166 INFO L142 QuantifierPusher]: treesize reduction 7, result has 82.5 percent of original size [2021-03-24 15:10:50,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-24 15:10:50,190 INFO L142 QuantifierPusher]: treesize reduction 3, result has 88.5 percent of original size [2021-03-24 15:10:50,191 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-24 15:10:50,206 INFO L142 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size [2021-03-24 15:10:50,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-03-24 15:10:50,221 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-03-24 15:10:50,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:10:50,222 INFO L142 QuantifierPusher]: treesize reduction 10, result has 9.1 percent of original size [2021-03-24 15:10:50,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:10:50,223 INFO L142 QuantifierPusher]: treesize reduction 18, result has 5.3 percent of original size [2021-03-24 15:10:50,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:10:50,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:50,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:10:50,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:10:50,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114027000] [2021-03-24 15:10:50,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:10:50,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 15:10:50,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228592477] [2021-03-24 15:10:50,225 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:10:50,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:10:50,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:10:50,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:10:50,225 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2021-03-24 15:10:50,226 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 519 transitions, 14958 flow. Second operand has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:50,226 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:10:50,226 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2021-03-24 15:10:50,226 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:10:51,603 INFO L129 PetriNetUnfolder]: 941/4639 cut-off events. [2021-03-24 15:10:51,604 INFO L130 PetriNetUnfolder]: For 184437/185174 co-relation queries the response was YES. [2021-03-24 15:10:51,669 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40590 conditions, 4639 events. 941/4639 cut-off events. For 184437/185174 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 52930 event pairs, 451 based on Foata normal form. 197/4647 useless extension candidates. Maximal degree in co-relation 40442. Up to 2138 conditions per place. [2021-03-24 15:10:51,681 INFO L132 encePairwiseOnDemand]: 49/57 looper letters, 341 selfloop transitions, 5 changer transitions 57/456 dead transitions. [2021-03-24 15:10:51,681 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 456 transitions, 13760 flow [2021-03-24 15:10:51,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 15:10:51,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 15:10:51,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 284 transitions. [2021-03-24 15:10:51,682 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7117794486215538 [2021-03-24 15:10:51,682 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 284 transitions. [2021-03-24 15:10:51,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 284 transitions. [2021-03-24 15:10:51,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:10:51,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 284 transitions. [2021-03-24 15:10:51,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 40.57142857142857) internal successors, (284), 7 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:51,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 57.0) internal successors, (456), 8 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:51,683 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 57.0) internal successors, (456), 8 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:51,683 INFO L185 Difference]: Start difference. First operand has 435 places, 519 transitions, 14958 flow. Second operand 7 states and 284 transitions. [2021-03-24 15:10:51,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 456 transitions, 13760 flow [2021-03-24 15:10:52,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 456 transitions, 12661 flow, removed 63 selfloop flow, removed 31 redundant places. [2021-03-24 15:10:52,571 INFO L241 Difference]: Finished difference. Result has 412 places, 397 transitions, 10063 flow [2021-03-24 15:10:52,572 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=11448, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10063, PETRI_PLACES=412, PETRI_TRANSITIONS=397} [2021-03-24 15:10:52,572 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 358 predicate places. [2021-03-24 15:10:52,572 INFO L480 AbstractCegarLoop]: Abstraction has has 412 places, 397 transitions, 10063 flow [2021-03-24 15:10:52,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:52,572 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:10:52,572 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] [2021-03-24 15:10:52,572 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-03-24 15:10:52,572 INFO L428 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:10:52,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:10:52,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1929388319, now seen corresponding path program 40 times [2021-03-24 15:10:52,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:10:52,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986650066] [2021-03-24 15:10:52,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:10:52,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:10:52,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:52,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:10:52,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:52,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:10:52,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:52,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:52,599 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:52,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:52,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:52,600 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 15:10:52,607 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-03-24 15:10:52,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 15:10:52,616 INFO L142 QuantifierPusher]: treesize reduction 14, result has 41.7 percent of original size [2021-03-24 15:10:52,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:52,625 INFO L142 QuantifierPusher]: treesize reduction 7, result has 58.8 percent of original size [2021-03-24 15:10:52,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:52,633 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-03-24 15:10:52,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 15:10:52,643 INFO L142 QuantifierPusher]: treesize reduction 15, result has 6.3 percent of original size [2021-03-24 15:10:52,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:10:52,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:52,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:10:52,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:10:52,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986650066] [2021-03-24 15:10:52,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:10:52,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 15:10:52,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595840267] [2021-03-24 15:10:52,644 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 15:10:52,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:10:52,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 15:10:52,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-24 15:10:52,645 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2021-03-24 15:10:52,645 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 397 transitions, 10063 flow. Second operand has 8 states, 8 states have (on average 36.375) internal successors, (291), 8 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) [2021-03-24 15:10:52,645 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:10:52,646 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2021-03-24 15:10:52,646 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:10:53,613 INFO L129 PetriNetUnfolder]: 823/4042 cut-off events. [2021-03-24 15:10:53,613 INFO L130 PetriNetUnfolder]: For 139728/140366 co-relation queries the response was YES. [2021-03-24 15:10:53,658 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33131 conditions, 4042 events. 823/4042 cut-off events. For 139728/140366 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 45080 event pairs, 413 based on Foata normal form. 123/3991 useless extension candidates. Maximal degree in co-relation 32996. Up to 2009 conditions per place. [2021-03-24 15:10:53,668 INFO L132 encePairwiseOnDemand]: 49/57 looper letters, 319 selfloop transitions, 11 changer transitions 6/389 dead transitions. [2021-03-24 15:10:53,668 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 389 transitions, 10518 flow [2021-03-24 15:10:53,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 15:10:53,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 15:10:53,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 278 transitions. [2021-03-24 15:10:53,669 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6967418546365914 [2021-03-24 15:10:53,669 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 278 transitions. [2021-03-24 15:10:53,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 278 transitions. [2021-03-24 15:10:53,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:10:53,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 278 transitions. [2021-03-24 15:10:53,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 39.714285714285715) internal successors, (278), 7 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:53,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 57.0) internal successors, (456), 8 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:53,670 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 57.0) internal successors, (456), 8 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:53,670 INFO L185 Difference]: Start difference. First operand has 412 places, 397 transitions, 10063 flow. Second operand 7 states and 278 transitions. [2021-03-24 15:10:53,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 389 transitions, 10518 flow [2021-03-24 15:10:54,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 389 transitions, 9967 flow, removed 49 selfloop flow, removed 26 redundant places. [2021-03-24 15:10:54,235 INFO L241 Difference]: Finished difference. Result has 379 places, 378 transitions, 9082 flow [2021-03-24 15:10:54,235 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=9192, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9082, PETRI_PLACES=379, PETRI_TRANSITIONS=378} [2021-03-24 15:10:54,235 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 325 predicate places. [2021-03-24 15:10:54,235 INFO L480 AbstractCegarLoop]: Abstraction has has 379 places, 378 transitions, 9082 flow [2021-03-24 15:10:54,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 36.375) internal successors, (291), 8 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) [2021-03-24 15:10:54,236 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:10:54,236 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:10:54,236 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-03-24 15:10:54,236 INFO L428 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:10:54,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:10:54,236 INFO L82 PathProgramCache]: Analyzing trace with hash -671256911, now seen corresponding path program 41 times [2021-03-24 15:10:54,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:10:54,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564690026] [2021-03-24 15:10:54,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:10:54,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:10:54,249 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:54,250 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:10:54,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:54,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:10:54,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:54,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:54,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:54,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:54,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:54,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 15:10:54,269 INFO L142 QuantifierPusher]: treesize reduction 7, result has 63.2 percent of original size [2021-03-24 15:10:54,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 15:10:54,278 INFO L142 QuantifierPusher]: treesize reduction 14, result has 41.7 percent of original size [2021-03-24 15:10:54,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:54,286 INFO L142 QuantifierPusher]: treesize reduction 7, result has 58.8 percent of original size [2021-03-24 15:10:54,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:54,295 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:54,295 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:10:54,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:54,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 15:10:54,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:54,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:10:54,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:10:54,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564690026] [2021-03-24 15:10:54,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:10:54,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 15:10:54,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010583173] [2021-03-24 15:10:54,312 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 15:10:54,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:10:54,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 15:10:54,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-03-24 15:10:54,313 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2021-03-24 15:10:54,313 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 378 transitions, 9082 flow. Second operand has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:54,313 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:10:54,313 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2021-03-24 15:10:54,313 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:10:55,135 INFO L129 PetriNetUnfolder]: 687/3257 cut-off events. [2021-03-24 15:10:55,135 INFO L130 PetriNetUnfolder]: For 104197/104672 co-relation queries the response was YES. [2021-03-24 15:10:55,165 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25775 conditions, 3257 events. 687/3257 cut-off events. For 104197/104672 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 34155 event pairs, 365 based on Foata normal form. 127/3209 useless extension candidates. Maximal degree in co-relation 25651. Up to 1493 conditions per place. [2021-03-24 15:10:55,173 INFO L132 encePairwiseOnDemand]: 49/57 looper letters, 255 selfloop transitions, 5 changer transitions 31/335 dead transitions. [2021-03-24 15:10:55,173 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 335 transitions, 8651 flow [2021-03-24 15:10:55,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 15:10:55,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 15:10:55,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 318 transitions. [2021-03-24 15:10:55,174 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6973684210526315 [2021-03-24 15:10:55,174 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 318 transitions. [2021-03-24 15:10:55,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 318 transitions. [2021-03-24 15:10:55,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:10:55,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 318 transitions. [2021-03-24 15:10:55,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 39.75) internal successors, (318), 8 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:55,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:55,175 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:55,175 INFO L185 Difference]: Start difference. First operand has 379 places, 378 transitions, 9082 flow. Second operand 8 states and 318 transitions. [2021-03-24 15:10:55,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 335 transitions, 8651 flow [2021-03-24 15:10:55,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 335 transitions, 8398 flow, removed 28 selfloop flow, removed 20 redundant places. [2021-03-24 15:10:55,578 INFO L241 Difference]: Finished difference. Result has 357 places, 301 transitions, 7095 flow [2021-03-24 15:10:55,578 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=7672, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7095, PETRI_PLACES=357, PETRI_TRANSITIONS=301} [2021-03-24 15:10:55,578 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 303 predicate places. [2021-03-24 15:10:55,578 INFO L480 AbstractCegarLoop]: Abstraction has has 357 places, 301 transitions, 7095 flow [2021-03-24 15:10:55,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:55,579 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:10:55,579 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:10:55,579 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-03-24 15:10:55,579 INFO L428 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:10:55,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:10:55,579 INFO L82 PathProgramCache]: Analyzing trace with hash 2071165805, now seen corresponding path program 42 times [2021-03-24 15:10:55,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:10:55,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915789406] [2021-03-24 15:10:55,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:10:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:10:55,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:55,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:10:55,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:55,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:10:55,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:55,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:10:55,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:55,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:55,617 INFO L142 QuantifierPusher]: treesize reduction 8, result has 60.0 percent of original size [2021-03-24 15:10:55,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 15:10:55,630 INFO L142 QuantifierPusher]: treesize reduction 30, result has 28.6 percent of original size [2021-03-24 15:10:55,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 15:10:55,638 INFO L142 QuantifierPusher]: treesize reduction 18, result has 35.7 percent of original size [2021-03-24 15:10:55,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:55,648 INFO L142 QuantifierPusher]: treesize reduction 30, result has 33.3 percent of original size [2021-03-24 15:10:55,649 INFO L147 QuantifierPusher]: treesize reduction 5, result has 66.7 percent of original size 10 [2021-03-24 15:10:55,656 INFO L142 QuantifierPusher]: treesize reduction 11, result has 63.3 percent of original size [2021-03-24 15:10:55,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:10:55,671 INFO L142 QuantifierPusher]: treesize reduction 5, result has 78.3 percent of original size [2021-03-24 15:10:55,671 INFO L147 QuantifierPusher]: treesize reduction 6, result has 66.7 percent of original size 12 [2021-03-24 15:10:55,684 INFO L142 QuantifierPusher]: treesize reduction 9, result has 69.0 percent of original size [2021-03-24 15:10:55,685 INFO L147 QuantifierPusher]: treesize reduction 7, result has 65.0 percent of original size 13 [2021-03-24 15:10:55,701 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-03-24 15:10:55,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:10:55,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:55,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:10:55,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:10:55,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915789406] [2021-03-24 15:10:55,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:10:55,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-24 15:10:55,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083342467] [2021-03-24 15:10:55,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 15:10:55,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:10:55,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 15:10:55,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-03-24 15:10:55,703 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2021-03-24 15:10:55,704 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 301 transitions, 7095 flow. Second operand has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:55,704 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:10:55,704 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2021-03-24 15:10:55,704 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:10:56,340 INFO L129 PetriNetUnfolder]: 544/2693 cut-off events. [2021-03-24 15:10:56,340 INFO L130 PetriNetUnfolder]: For 83975/84417 co-relation queries the response was YES. [2021-03-24 15:10:56,368 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21087 conditions, 2693 events. 544/2693 cut-off events. For 83975/84417 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 27413 event pairs, 274 based on Foata normal form. 105/2688 useless extension candidates. Maximal degree in co-relation 20972. Up to 1209 conditions per place. [2021-03-24 15:10:56,374 INFO L132 encePairwiseOnDemand]: 44/57 looper letters, 178 selfloop transitions, 27 changer transitions 51/300 dead transitions. [2021-03-24 15:10:56,374 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 300 transitions, 7390 flow [2021-03-24 15:10:56,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 15:10:56,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 15:10:56,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 402 transitions. [2021-03-24 15:10:56,375 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7052631578947368 [2021-03-24 15:10:56,375 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 402 transitions. [2021-03-24 15:10:56,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 402 transitions. [2021-03-24 15:10:56,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:10:56,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 402 transitions. [2021-03-24 15:10:56,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 40.2) internal successors, (402), 10 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:56,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 57.0) internal successors, (627), 11 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:56,376 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 57.0) internal successors, (627), 11 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:56,376 INFO L185 Difference]: Start difference. First operand has 357 places, 301 transitions, 7095 flow. Second operand 10 states and 402 transitions. [2021-03-24 15:10:56,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 300 transitions, 7390 flow [2021-03-24 15:10:56,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 300 transitions, 6912 flow, removed 43 selfloop flow, removed 30 redundant places. [2021-03-24 15:10:56,680 INFO L241 Difference]: Finished difference. Result has 318 places, 245 transitions, 5218 flow [2021-03-24 15:10:56,680 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=6160, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5218, PETRI_PLACES=318, PETRI_TRANSITIONS=245} [2021-03-24 15:10:56,680 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 264 predicate places. [2021-03-24 15:10:56,680 INFO L480 AbstractCegarLoop]: Abstraction has has 318 places, 245 transitions, 5218 flow [2021-03-24 15:10:56,680 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:56,680 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:10:56,680 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] [2021-03-24 15:10:56,680 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-03-24 15:10:56,681 INFO L428 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:10:56,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:10:56,681 INFO L82 PathProgramCache]: Analyzing trace with hash 2013466869, now seen corresponding path program 43 times [2021-03-24 15:10:56,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:10:56,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678488409] [2021-03-24 15:10:56,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:10:56,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:10:56,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:56,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:10:56,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:56,718 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:10:56,719 INFO L142 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-03-24 15:10:56,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-24 15:10:56,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:56,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:10:56,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:56,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-03-24 15:10:56,748 INFO L142 QuantifierPusher]: treesize reduction 11, result has 69.4 percent of original size [2021-03-24 15:10:56,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-24 15:10:56,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:56,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 15:10:56,772 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:56,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:10:56,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:56,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:10:56,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:10:56,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678488409] [2021-03-24 15:10:56,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:10:56,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 15:10:56,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894526012] [2021-03-24 15:10:56,785 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 15:10:56,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:10:56,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 15:10:56,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-03-24 15:10:56,786 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2021-03-24 15:10:56,786 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 245 transitions, 5218 flow. Second operand has 8 states, 8 states have (on average 36.375) internal successors, (291), 8 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) [2021-03-24 15:10:56,786 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:10:56,786 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2021-03-24 15:10:56,786 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:10:57,153 INFO L129 PetriNetUnfolder]: 290/1675 cut-off events. [2021-03-24 15:10:57,154 INFO L130 PetriNetUnfolder]: For 43821/44051 co-relation queries the response was YES. [2021-03-24 15:10:57,166 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12383 conditions, 1675 events. 290/1675 cut-off events. For 43821/44051 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 15781 event pairs, 125 based on Foata normal form. 116/1743 useless extension candidates. Maximal degree in co-relation 12281. Up to 394 conditions per place. [2021-03-24 15:10:57,168 INFO L132 encePairwiseOnDemand]: 47/57 looper letters, 92 selfloop transitions, 7 changer transitions 81/223 dead transitions. [2021-03-24 15:10:57,168 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 223 transitions, 4647 flow [2021-03-24 15:10:57,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 15:10:57,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 15:10:57,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 368 transitions. [2021-03-24 15:10:57,169 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7173489278752436 [2021-03-24 15:10:57,169 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 368 transitions. [2021-03-24 15:10:57,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 368 transitions. [2021-03-24 15:10:57,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:10:57,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 368 transitions. [2021-03-24 15:10:57,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 40.888888888888886) internal successors, (368), 9 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:57,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 57.0) internal successors, (570), 10 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:57,171 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 57.0) internal successors, (570), 10 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:57,171 INFO L185 Difference]: Start difference. First operand has 318 places, 245 transitions, 5218 flow. Second operand 9 states and 368 transitions. [2021-03-24 15:10:57,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 223 transitions, 4647 flow [2021-03-24 15:10:57,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 223 transitions, 4359 flow, removed 29 selfloop flow, removed 29 redundant places. [2021-03-24 15:10:57,327 INFO L241 Difference]: Finished difference. Result has 291 places, 140 transitions, 2173 flow [2021-03-24 15:10:57,327 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=3514, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2173, PETRI_PLACES=291, PETRI_TRANSITIONS=140} [2021-03-24 15:10:57,327 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 237 predicate places. [2021-03-24 15:10:57,327 INFO L480 AbstractCegarLoop]: Abstraction has has 291 places, 140 transitions, 2173 flow [2021-03-24 15:10:57,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 36.375) internal successors, (291), 8 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) [2021-03-24 15:10:57,327 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:10:57,327 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] [2021-03-24 15:10:57,327 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-03-24 15:10:57,327 INFO L428 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:10:57,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:10:57,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1089715285, now seen corresponding path program 44 times [2021-03-24 15:10:57,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:10:57,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698087045] [2021-03-24 15:10:57,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:10:57,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:10:57,346 INFO L142 QuantifierPusher]: treesize reduction 21, result has 59.6 percent of original size [2021-03-24 15:10:57,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-03-24 15:10:57,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:57,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:10:57,366 INFO L142 QuantifierPusher]: treesize reduction 7, result has 65.0 percent of original size [2021-03-24 15:10:57,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:10:57,369 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:57,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 15:10:57,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:57,376 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:10:57,387 INFO L142 QuantifierPusher]: treesize reduction 7, result has 74.1 percent of original size [2021-03-24 15:10:57,388 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-24 15:10:57,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:57,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:10:57,416 INFO L142 QuantifierPusher]: treesize reduction 5, result has 79.2 percent of original size [2021-03-24 15:10:57,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 15:10:57,417 INFO L142 QuantifierPusher]: treesize reduction 17, result has 37.0 percent of original size [2021-03-24 15:10:57,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:57,426 INFO L142 QuantifierPusher]: treesize reduction 10, result has 54.5 percent of original size [2021-03-24 15:10:57,427 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 15:10:57,437 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:57,437 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 15:10:57,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:57,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:10:57,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:10:57,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698087045] [2021-03-24 15:10:57,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:10:57,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-24 15:10:57,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422148481] [2021-03-24 15:10:57,448 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 15:10:57,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:10:57,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 15:10:57,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-03-24 15:10:57,449 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2021-03-24 15:10:57,449 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 140 transitions, 2173 flow. Second operand has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:57,449 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:10:57,449 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2021-03-24 15:10:57,449 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:10:57,729 INFO L129 PetriNetUnfolder]: 101/706 cut-off events. [2021-03-24 15:10:57,730 INFO L130 PetriNetUnfolder]: For 14634/14668 co-relation queries the response was YES. [2021-03-24 15:10:57,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5221 conditions, 706 events. 101/706 cut-off events. For 14634/14668 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5017 event pairs, 40 based on Foata normal form. 13/714 useless extension candidates. Maximal degree in co-relation 5133. Up to 292 conditions per place. [2021-03-24 15:10:57,737 INFO L132 encePairwiseOnDemand]: 47/57 looper letters, 72 selfloop transitions, 11 changer transitions 23/141 dead transitions. [2021-03-24 15:10:57,738 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 141 transitions, 2465 flow [2021-03-24 15:10:57,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 15:10:57,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 15:10:57,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 350 transitions. [2021-03-24 15:10:57,739 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.682261208576998 [2021-03-24 15:10:57,739 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 350 transitions. [2021-03-24 15:10:57,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 350 transitions. [2021-03-24 15:10:57,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:10:57,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 350 transitions. [2021-03-24 15:10:57,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 38.888888888888886) internal successors, (350), 9 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:57,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 57.0) internal successors, (570), 10 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:57,740 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 57.0) internal successors, (570), 10 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:57,740 INFO L185 Difference]: Start difference. First operand has 291 places, 140 transitions, 2173 flow. Second operand 9 states and 350 transitions. [2021-03-24 15:10:57,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 141 transitions, 2465 flow [2021-03-24 15:10:57,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 141 transitions, 1907 flow, removed 74 selfloop flow, removed 56 redundant places. [2021-03-24 15:10:57,803 INFO L241 Difference]: Finished difference. Result has 216 places, 114 transitions, 1436 flow [2021-03-24 15:10:57,803 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1545, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1436, PETRI_PLACES=216, PETRI_TRANSITIONS=114} [2021-03-24 15:10:57,804 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 162 predicate places. [2021-03-24 15:10:57,804 INFO L480 AbstractCegarLoop]: Abstraction has has 216 places, 114 transitions, 1436 flow [2021-03-24 15:10:57,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 35.9) internal successors, (359), 10 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:57,804 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:10:57,805 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] [2021-03-24 15:10:57,805 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-03-24 15:10:57,805 INFO L428 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:10:57,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:10:57,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1819414551, now seen corresponding path program 45 times [2021-03-24 15:10:57,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:10:57,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708623827] [2021-03-24 15:10:57,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:10:57,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:10:57,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:57,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:10:57,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:57,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:10:57,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:57,833 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:57,843 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:57,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 15:10:57,855 INFO L142 QuantifierPusher]: treesize reduction 12, result has 47.8 percent of original size [2021-03-24 15:10:57,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 15:10:57,860 INFO L142 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-03-24 15:10:57,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:10:57,871 INFO L142 QuantifierPusher]: treesize reduction 4, result has 73.3 percent of original size [2021-03-24 15:10:57,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 15:10:57,884 INFO L142 QuantifierPusher]: treesize reduction 1, result has 87.5 percent of original size [2021-03-24 15:10:57,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 15:10:57,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:57,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:10:57,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:10:57,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708623827] [2021-03-24 15:10:57,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:10:57,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 15:10:57,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420304857] [2021-03-24 15:10:57,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 15:10:57,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:10:57,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 15:10:57,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-03-24 15:10:57,894 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 57 [2021-03-24 15:10:57,895 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 114 transitions, 1436 flow. Second operand has 8 states, 8 states have (on average 39.125) internal successors, (313), 8 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:57,895 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:10:57,895 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 57 [2021-03-24 15:10:57,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:10:58,009 INFO L129 PetriNetUnfolder]: 52/461 cut-off events. [2021-03-24 15:10:58,009 INFO L130 PetriNetUnfolder]: For 5109/5139 co-relation queries the response was YES. [2021-03-24 15:10:58,011 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2765 conditions, 461 events. 52/461 cut-off events. For 5109/5139 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2995 event pairs, 21 based on Foata normal form. 9/468 useless extension candidates. Maximal degree in co-relation 2705. Up to 74 conditions per place. [2021-03-24 15:10:58,011 INFO L132 encePairwiseOnDemand]: 46/57 looper letters, 19 selfloop transitions, 16 changer transitions 39/110 dead transitions. [2021-03-24 15:10:58,011 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 110 transitions, 1545 flow [2021-03-24 15:10:58,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 15:10:58,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 15:10:58,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 367 transitions. [2021-03-24 15:10:58,012 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7153996101364523 [2021-03-24 15:10:58,012 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 367 transitions. [2021-03-24 15:10:58,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 367 transitions. [2021-03-24 15:10:58,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:10:58,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 367 transitions. [2021-03-24 15:10:58,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 40.77777777777778) internal successors, (367), 9 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:58,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 57.0) internal successors, (570), 10 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:58,013 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 57.0) internal successors, (570), 10 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:58,013 INFO L185 Difference]: Start difference. First operand has 216 places, 114 transitions, 1436 flow. Second operand 9 states and 367 transitions. [2021-03-24 15:10:58,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 110 transitions, 1545 flow [2021-03-24 15:10:58,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 110 transitions, 1280 flow, removed 40 selfloop flow, removed 35 redundant places. [2021-03-24 15:10:58,029 INFO L241 Difference]: Finished difference. Result has 173 places, 69 transitions, 607 flow [2021-03-24 15:10:58,029 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1092, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=607, PETRI_PLACES=173, PETRI_TRANSITIONS=69} [2021-03-24 15:10:58,029 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 119 predicate places. [2021-03-24 15:10:58,029 INFO L480 AbstractCegarLoop]: Abstraction has has 173 places, 69 transitions, 607 flow [2021-03-24 15:10:58,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 39.125) internal successors, (313), 8 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:58,029 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:10:58,029 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] [2021-03-24 15:10:58,029 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-03-24 15:10:58,029 INFO L428 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:10:58,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:10:58,030 INFO L82 PathProgramCache]: Analyzing trace with hash 110781089, now seen corresponding path program 46 times [2021-03-24 15:10:58,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:10:58,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277756923] [2021-03-24 15:10:58,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:10:58,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:10:58,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:58,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:10:58,061 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:58,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:58,064 INFO L142 QuantifierPusher]: treesize reduction 16, result has 46.7 percent of original size [2021-03-24 15:10:58,064 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 15:10:58,073 INFO L142 QuantifierPusher]: treesize reduction 9, result has 71.0 percent of original size [2021-03-24 15:10:58,074 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-24 15:10:58,088 INFO L142 QuantifierPusher]: treesize reduction 30, result has 46.4 percent of original size [2021-03-24 15:10:58,089 INFO L147 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size 21 [2021-03-24 15:10:58,116 INFO L142 QuantifierPusher]: treesize reduction 13, result has 69.8 percent of original size [2021-03-24 15:10:58,116 INFO L147 QuantifierPusher]: treesize reduction 5, result has 83.3 percent of original size 25 [2021-03-24 15:10:58,142 INFO L142 QuantifierPusher]: treesize reduction 3, result has 89.3 percent of original size [2021-03-24 15:10:58,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-03-24 15:10:58,159 INFO L142 QuantifierPusher]: treesize reduction 4, result has 84.6 percent of original size [2021-03-24 15:10:58,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-24 15:10:58,176 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:58,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:10:58,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:10:58,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277756923] [2021-03-24 15:10:58,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:10:58,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 15:10:58,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222839997] [2021-03-24 15:10:58,177 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 15:10:58,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:10:58,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 15:10:58,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-03-24 15:10:58,178 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2021-03-24 15:10:58,178 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 69 transitions, 607 flow. Second operand has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:58,178 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:10:58,178 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2021-03-24 15:10:58,178 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:10:58,326 INFO L129 PetriNetUnfolder]: 24/290 cut-off events. [2021-03-24 15:10:58,327 INFO L130 PetriNetUnfolder]: For 1691/1701 co-relation queries the response was YES. [2021-03-24 15:10:58,328 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1319 conditions, 290 events. 24/290 cut-off events. For 1691/1701 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1589 event pairs, 16 based on Foata normal form. 7/297 useless extension candidates. Maximal degree in co-relation 1270. Up to 91 conditions per place. [2021-03-24 15:10:58,328 INFO L132 encePairwiseOnDemand]: 48/57 looper letters, 28 selfloop transitions, 7 changer transitions 3/68 dead transitions. [2021-03-24 15:10:58,328 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 68 transitions, 654 flow [2021-03-24 15:10:58,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 15:10:58,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 15:10:58,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 368 transitions. [2021-03-24 15:10:58,329 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6456140350877193 [2021-03-24 15:10:58,329 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 368 transitions. [2021-03-24 15:10:58,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 368 transitions. [2021-03-24 15:10:58,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:10:58,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 368 transitions. [2021-03-24 15:10:58,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 36.8) internal successors, (368), 10 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:58,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 57.0) internal successors, (627), 11 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:58,330 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 57.0) internal successors, (627), 11 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:58,330 INFO L185 Difference]: Start difference. First operand has 173 places, 69 transitions, 607 flow. Second operand 10 states and 368 transitions. [2021-03-24 15:10:58,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 68 transitions, 654 flow [2021-03-24 15:10:58,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 68 transitions, 452 flow, removed 8 selfloop flow, removed 48 redundant places. [2021-03-24 15:10:58,334 INFO L241 Difference]: Finished difference. Result has 120 places, 63 transitions, 351 flow [2021-03-24 15:10:58,334 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=351, PETRI_PLACES=120, PETRI_TRANSITIONS=63} [2021-03-24 15:10:58,334 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 66 predicate places. [2021-03-24 15:10:58,334 INFO L480 AbstractCegarLoop]: Abstraction has has 120 places, 63 transitions, 351 flow [2021-03-24 15:10:58,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:58,334 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:10:58,335 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] [2021-03-24 15:10:58,335 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-03-24 15:10:58,335 INFO L428 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:10:58,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:10:58,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1445417741, now seen corresponding path program 47 times [2021-03-24 15:10:58,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:10:58,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255776719] [2021-03-24 15:10:58,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:10:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:10:58,370 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:58,370 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:10:58,381 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:58,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:10:58,382 INFO L142 QuantifierPusher]: treesize reduction 4, result has 80.0 percent of original size [2021-03-24 15:10:58,382 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-24 15:10:58,390 INFO L142 QuantifierPusher]: treesize reduction 42, result has 50.0 percent of original size [2021-03-24 15:10:58,391 INFO L147 QuantifierPusher]: treesize reduction 3, result has 92.9 percent of original size 39 [2021-03-24 15:10:58,432 INFO L142 QuantifierPusher]: treesize reduction 51, result has 52.8 percent of original size [2021-03-24 15:10:58,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-03-24 15:10:58,489 INFO L142 QuantifierPusher]: treesize reduction 8, result has 83.3 percent of original size [2021-03-24 15:10:58,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-24 15:10:58,511 INFO L142 QuantifierPusher]: treesize reduction 12, result has 76.9 percent of original size [2021-03-24 15:10:58,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-03-24 15:10:58,536 INFO L142 QuantifierPusher]: treesize reduction 9, result has 70.0 percent of original size [2021-03-24 15:10:58,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:58,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:58,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:10:58,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:10:58,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255776719] [2021-03-24 15:10:58,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:10:58,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 15:10:58,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732703640] [2021-03-24 15:10:58,552 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 15:10:58,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:10:58,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 15:10:58,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-03-24 15:10:58,553 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2021-03-24 15:10:58,553 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 63 transitions, 351 flow. Second operand has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:58,553 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:10:58,553 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2021-03-24 15:10:58,553 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:10:58,849 INFO L129 PetriNetUnfolder]: 14/207 cut-off events. [2021-03-24 15:10:58,850 INFO L130 PetriNetUnfolder]: For 346/349 co-relation queries the response was YES. [2021-03-24 15:10:58,850 INFO L84 FinitePrefix]: Finished finitePrefix Result has 687 conditions, 207 events. 14/207 cut-off events. For 346/349 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 922 event pairs, 13 based on Foata normal form. 5/211 useless extension candidates. Maximal degree in co-relation 654. Up to 52 conditions per place. [2021-03-24 15:10:58,851 INFO L132 encePairwiseOnDemand]: 49/57 looper letters, 19 selfloop transitions, 5 changer transitions 4/58 dead transitions. [2021-03-24 15:10:58,851 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 58 transitions, 368 flow [2021-03-24 15:10:58,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 15:10:58,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 15:10:58,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 331 transitions. [2021-03-24 15:10:58,852 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.645224171539961 [2021-03-24 15:10:58,852 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 331 transitions. [2021-03-24 15:10:58,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 331 transitions. [2021-03-24 15:10:58,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:10:58,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 331 transitions. [2021-03-24 15:10:58,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 36.77777777777778) internal successors, (331), 9 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) [2021-03-24 15:10:58,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 57.0) internal successors, (570), 10 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:58,853 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 57.0) internal successors, (570), 10 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:58,853 INFO L185 Difference]: Start difference. First operand has 120 places, 63 transitions, 351 flow. Second operand 9 states and 331 transitions. [2021-03-24 15:10:58,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 58 transitions, 368 flow [2021-03-24 15:10:58,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 58 transitions, 318 flow, removed 4 selfloop flow, removed 16 redundant places. [2021-03-24 15:10:58,856 INFO L241 Difference]: Finished difference. Result has 105 places, 53 transitions, 242 flow [2021-03-24 15:10:58,856 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=242, PETRI_PLACES=105, PETRI_TRANSITIONS=53} [2021-03-24 15:10:58,856 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 51 predicate places. [2021-03-24 15:10:58,856 INFO L480 AbstractCegarLoop]: Abstraction has has 105 places, 53 transitions, 242 flow [2021-03-24 15:10:58,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 36.111111111111114) internal successors, (325), 9 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:58,856 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 15:10:58,856 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 15:10:58,856 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-03-24 15:10:58,856 INFO L428 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 15:10:58,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 15:10:58,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1951523439, now seen corresponding path program 48 times [2021-03-24 15:10:58,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 15:10:58,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515763784] [2021-03-24 15:10:58,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 15:10:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 15:10:58,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:58,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 15:10:58,890 INFO L142 QuantifierPusher]: treesize reduction 3, result has 76.9 percent of original size [2021-03-24 15:10:58,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 15:10:58,893 INFO L142 QuantifierPusher]: treesize reduction 7, result has 74.1 percent of original size [2021-03-24 15:10:58,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-03-24 15:10:58,905 INFO L142 QuantifierPusher]: treesize reduction 26, result has 44.7 percent of original size [2021-03-24 15:10:58,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-03-24 15:10:58,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:58,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-24 15:10:58,943 INFO L142 QuantifierPusher]: treesize reduction 10, result has 73.0 percent of original size [2021-03-24 15:10:58,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-24 15:10:58,949 INFO L142 QuantifierPusher]: treesize reduction 10, result has 60.0 percent of original size [2021-03-24 15:10:58,949 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 15:10:58,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:58,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:10:58,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:58,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:10:58,965 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-03-24 15:10:58,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:10:58,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 15:10:58,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 15:10:58,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 15:10:58,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515763784] [2021-03-24 15:10:58,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 15:10:58,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 15:10:58,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365113355] [2021-03-24 15:10:58,966 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 15:10:58,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 15:10:58,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 15:10:58,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-24 15:10:58,967 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 57 [2021-03-24 15:10:58,967 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 53 transitions, 242 flow. Second operand has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:58,967 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 15:10:58,967 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 57 [2021-03-24 15:10:58,967 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 15:10:59,001 INFO L129 PetriNetUnfolder]: 8/79 cut-off events. [2021-03-24 15:10:59,001 INFO L130 PetriNetUnfolder]: For 104/105 co-relation queries the response was YES. [2021-03-24 15:10:59,001 INFO L84 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 79 events. 8/79 cut-off events. For 104/105 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 269 event pairs, 6 based on Foata normal form. 6/85 useless extension candidates. Maximal degree in co-relation 246. Up to 15 conditions per place. [2021-03-24 15:10:59,001 INFO L132 encePairwiseOnDemand]: 51/57 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2021-03-24 15:10:59,002 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 29 transitions, 167 flow [2021-03-24 15:10:59,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 15:10:59,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 15:10:59,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 253 transitions. [2021-03-24 15:10:59,002 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6340852130325815 [2021-03-24 15:10:59,002 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 253 transitions. [2021-03-24 15:10:59,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 253 transitions. [2021-03-24 15:10:59,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 15:10:59,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 253 transitions. [2021-03-24 15:10:59,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 36.142857142857146) internal successors, (253), 7 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:59,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 57.0) internal successors, (456), 8 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:59,004 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 57.0) internal successors, (456), 8 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:59,004 INFO L185 Difference]: Start difference. First operand has 105 places, 53 transitions, 242 flow. Second operand 7 states and 253 transitions. [2021-03-24 15:10:59,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 29 transitions, 167 flow [2021-03-24 15:10:59,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 29 transitions, 132 flow, removed 2 selfloop flow, removed 16 redundant places. [2021-03-24 15:10:59,004 INFO L241 Difference]: Finished difference. Result has 62 places, 0 transitions, 0 flow [2021-03-24 15:10:59,005 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=62, PETRI_TRANSITIONS=0} [2021-03-24 15:10:59,005 INFO L343 CegarLoopForPetriNet]: 54 programPoint places, 8 predicate places. [2021-03-24 15:10:59,005 INFO L480 AbstractCegarLoop]: Abstraction has has 62 places, 0 transitions, 0 flow [2021-03-24 15:10:59,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 15:10:59,005 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-03-24 15:10:59,008 INFO L202 PluginConnector]: Adding new model bakery-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 03:10:59 BasicIcfg [2021-03-24 15:10:59,008 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 15:10:59,010 INFO L168 Benchmark]: Toolchain (without parser) took 309133.83 ms. Allocated memory was 356.5 MB in the beginning and 14.7 GB in the end (delta: 14.4 GB). Free memory was 336.5 MB in the beginning and 9.3 GB in the end (delta: -9.0 GB). Peak memory consumption was 5.4 GB. Max. memory is 16.0 GB. [2021-03-24 15:10:59,010 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 356.5 MB. Free memory was 337.7 MB in the beginning and 337.7 MB in the end (delta: 75.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 15:10:59,010 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.57 ms. Allocated memory is still 356.5 MB. Free memory was 336.4 MB in the beginning and 335.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 15:10:59,011 INFO L168 Benchmark]: Boogie Preprocessor took 24.51 ms. Allocated memory is still 356.5 MB. Free memory was 335.0 MB in the beginning and 333.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 15:10:59,011 INFO L168 Benchmark]: RCFGBuilder took 254.32 ms. Allocated memory is still 356.5 MB. Free memory was 333.9 MB in the beginning and 320.1 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-24 15:10:59,011 INFO L168 Benchmark]: TraceAbstraction took 308823.59 ms. Allocated memory was 356.5 MB in the beginning and 14.7 GB in the end (delta: 14.4 GB). Free memory was 319.6 MB in the beginning and 9.3 GB in the end (delta: -9.0 GB). Peak memory consumption was 5.4 GB. Max. memory is 16.0 GB. [2021-03-24 15:10:59,011 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 0.13 ms. Allocated memory is still 356.5 MB. Free memory was 337.7 MB in the beginning and 337.7 MB in the end (delta: 75.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 26.57 ms. Allocated memory is still 356.5 MB. Free memory was 336.4 MB in the beginning and 335.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 24.51 ms. Allocated memory is still 356.5 MB. Free memory was 335.0 MB in the beginning and 333.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 254.32 ms. Allocated memory is still 356.5 MB. Free memory was 333.9 MB in the beginning and 320.1 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 308823.59 ms. Allocated memory was 356.5 MB in the beginning and 14.7 GB in the end (delta: 14.4 GB). Free memory was 319.6 MB in the beginning and 9.3 GB in the end (delta: -9.0 GB). Peak memory consumption was 5.4 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 139.0ms, 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 - PositiveResult [Line: 82]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 26.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 308699.9ms, OverallIterations: 48, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 302431.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 275.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 631 SDtfs, 2058 SDslu, 355 SDs, 0 SdLazy, 10377 SolverSat, 1962 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5980.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 692 GetRequests, 92 SyntacticMatches, 34 SemanticMatches, 566 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1840 ImplicationChecksByTransitivity, 7456.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=48477occurred in iteration=26, InterpolantAutomatonStates: 556, 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: 54.5ms SsaConstructionTime, 316.9ms SatisfiabilityAnalysisTime, 5304.0ms InterpolantComputationTime, 2112 NumberOfCodeBlocks, 2112 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 2064 ConstructedInterpolants, 0 QuantifiedInterpolants, 13602 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 48 InterpolantComputations, 48 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...